CN118955817A - Acid- and alkali-resistant emulsion thickener for anticorrosive coatings and preparation method thereof - Google Patents
Acid- and alkali-resistant emulsion thickener for anticorrosive coatings and preparation method thereof Download PDFInfo
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- CN118955817A CN118955817A CN202411441361.XA CN202411441361A CN118955817A CN 118955817 A CN118955817 A CN 118955817A CN 202411441361 A CN202411441361 A CN 202411441361A CN 118955817 A CN118955817 A CN 118955817A
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- aluminum silicate
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- 239000002562 thickening agent Substances 0.000 title claims abstract description 64
- 239000000839 emulsion Substances 0.000 title claims abstract description 48
- 239000003513 alkali Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 238000000576 coating method Methods 0.000 title claims description 8
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000003973 paint Substances 0.000 claims abstract description 52
- 239000002253 acid Substances 0.000 claims abstract description 43
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910000077 silane Inorganic materials 0.000 claims abstract description 23
- 239000004593 Epoxy Substances 0.000 claims abstract description 21
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 21
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 21
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 15
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 15
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims abstract description 10
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims abstract description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims abstract description 7
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 41
- 239000008367 deionised water Substances 0.000 claims description 35
- 229910021641 deionized water Inorganic materials 0.000 claims description 35
- 239000000243 solution Substances 0.000 claims description 31
- 239000000843 powder Substances 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 26
- 239000002243 precursor Substances 0.000 claims description 24
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 23
- 230000000977 initiatory effect Effects 0.000 claims description 23
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 21
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 20
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 19
- 239000000178 monomer Substances 0.000 claims description 19
- 239000012752 auxiliary agent Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 16
- 239000000049 pigment Substances 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 16
- 239000003995 emulsifying agent Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 150000002191 fatty alcohols Chemical class 0.000 claims description 11
- 229940057950 sodium laureth sulfate Drugs 0.000 claims description 11
- SXHLENDCVBIJFO-UHFFFAOYSA-M sodium;2-[2-(2-dodecoxyethoxy)ethoxy]ethyl sulfate Chemical group [Na+].CCCCCCCCCCCCOCCOCCOCCOS([O-])(=O)=O SXHLENDCVBIJFO-UHFFFAOYSA-M 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000012751 acid resistant agent Substances 0.000 claims description 10
- 239000012750 alkali resistant agent Substances 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 9
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 9
- 238000005342 ion exchange Methods 0.000 claims description 9
- 239000003456 ion exchange resin Substances 0.000 claims description 9
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 9
- 230000004048 modification Effects 0.000 claims description 9
- 238000012986 modification Methods 0.000 claims description 9
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 230000001804 emulsifying effect Effects 0.000 claims description 8
- 239000012467 final product Substances 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 238000006116 polymerization reaction Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- -1 3-epoxypropyl triethoxy silane Chemical compound 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 5
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 229940079827 sodium hydrogen sulfite Drugs 0.000 claims description 4
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000001488 sodium phosphate Substances 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 3
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims description 3
- 235000019801 trisodium phosphate Nutrition 0.000 claims description 3
- 238000004945 emulsification Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 3
- 238000007665 sagging Methods 0.000 claims 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims 2
- 239000002518 antifoaming agent Substances 0.000 claims 2
- 239000002270 dispersing agent Substances 0.000 claims 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims 1
- 239000005995 Aluminium silicate Substances 0.000 claims 1
- 239000004709 Chlorinated polyethylene Substances 0.000 claims 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 1
- 235000012211 aluminium silicate Nutrition 0.000 claims 1
- 239000000440 bentonite Substances 0.000 claims 1
- 229910000278 bentonite Inorganic materials 0.000 claims 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims 1
- 239000003822 epoxy resin Substances 0.000 claims 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims 1
- 229910052901 montmorillonite Inorganic materials 0.000 claims 1
- 239000005011 phenolic resin Substances 0.000 claims 1
- 229920001568 phenolic resin Polymers 0.000 claims 1
- 229920000647 polyepoxide Polymers 0.000 claims 1
- 239000008096 xylene Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 15
- 230000008719 thickening Effects 0.000 abstract description 12
- 238000004132 cross linking Methods 0.000 abstract description 10
- 239000000693 micelle Substances 0.000 abstract description 9
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 6
- 239000011347 resin Substances 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 5
- 125000005372 silanol group Chemical group 0.000 abstract description 4
- 238000005411 Van der Waals force Methods 0.000 abstract description 3
- 125000003700 epoxy group Chemical group 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 3
- 125000003277 amino group Chemical group 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 23
- 239000002585 base Substances 0.000 description 16
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 10
- 125000004185 ester group Chemical group 0.000 description 9
- 159000000000 sodium salts Chemical class 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 7
- 230000003993 interaction Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000003917 TEM image Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 210000001072 colon Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the field of emulsion thickeners, and provides an acid and alkali resistant emulsion thickener for anti-corrosive paint and a preparation method thereof. The epoxy silane used in the invention is hydrolyzed to generate an intermediate containing silanol groups, the intermediate reacts with hydroxyl groups on the surface of aluminum silicate to form a silicon-oxygen bond, and meanwhile, the epoxy groups can also form a cross-linking structure with hydroxyl groups, amino groups and the like in the resin, so that the bonding strength and acid and alkali resistance of the modified aluminum silicate and a matrix material are enhanced. And then methoxy polyethylene glycol methacrylate and nonylphenol polyoxyethylene ether methacrylate are added, wherein groups are interacted through hydrogen bonds and Van der Waals force to form a stable three-dimensional network structure, a stable micelle structure is formed in a water phase, the stability of emulsion is improved, and the thickening effect is improved through physical crosslinking.
Description
Technical Field
The invention belongs to the field of emulsion thickeners, and relates to an acid and alkali resistant emulsion thickener for anti-corrosive paint and a preparation method thereof.
Background
Anticorrosive coatings play a critical role in protecting metal and concrete structures from corrosive environments. The anti-corrosion coating effectively isolates contact of corrosive media by forming a protective barrier on the surfaces of metal and concrete, prevents penetration and erosion of corrosive substances such as moisture, salt, chemicals and the like, plays a key role in maintaining the physical integrity of metal and concrete structures, thereby ensuring the mechanical properties and the overall safety of the structures, and has important significance in prolonging the service lives of the structures when applied. In addition, the use of the anticorrosive paint can obviously reduce maintenance and replacement costs caused by corrosion, so that a great deal of labor and material costs are saved, and the economic benefit is obvious.
The existing thickeners, such as polyacrylate, hydroxyethyl cellulose and the like, perform well in neutral or slight acid-base environments, but are easy to lose efficacy in extreme acid-base environments, and the chemical structure of the thickener is easy to decompose under the action of acid or alkali, so that the stability and the protective performance of the paint are affected. However, in some special high acid or high base environments, corrosion protection coatings need to have special chemical stability to ensure their protective properties and service life. Some thickeners have significantly reduced thickening effects in extreme pH environments, limiting the application of these corrosion resistant coatings in acidic or alkaline environments. Therefore, the selection of a thickener that is capable of maintaining a stable thickening effect under extreme pH conditions is critical to optimizing the application properties of the anti-corrosive coating.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the acid and alkali resistant emulsion thickener for the anti-corrosion paint and the preparation method thereof, and the acid and alkali resistant agent is added into the thickener, so that the anti-corrosion paint can still maintain viscosity in an extreme pH environment, has good adhesion effect on metal and concrete, and meets the requirement of actual production.
To achieve the purpose, the invention adopts the following technical scheme:
In a first aspect, the present invention provides a method for preparing an acid and alkali resistant emulsion thickener for anticorrosive paint, the method comprising:
Step S1, adding raw materials, mixing 300-360 parts by weight of deionized water with 8-15 parts by weight of acid and alkali resistant agent, starting a stirring device, adding an emulsifying agent A, and stirring to obtain a mixed solution A;
S2, emulsification pretreatment, namely heating the mixed solution A to a first temperature, adding 80-120 parts by weight of associated monomers, and continuously stirring to obtain a mixed solution B;
Step S3, preparing an initiating liquid by using 2-8 parts by weight of initiator and 50-60 parts by weight of deionized water;
S4, emulsifying a main monomer, sequentially adding 200-250 parts by weight of methacrylic acid, 100-150 parts by weight of butyl acrylate, 50-100 parts by weight of vinyl acetate and an emulsifier B into a mixed solution B, adding 1-6 parts by weight of an auxiliary agent, and stirring to obtain a precursor solution A;
And S5, carrying out polymerization reaction, namely raising the temperature of the precursor solution A to a second temperature, initiating liquid drop into the precursor solution A, and lowering the temperature to be lower than a third temperature after the full reaction is finished to obtain a final product.
The invention adds butyl acrylate and vinyl acetate into thickener, which has the following functions:
(1) Butyl acrylate contains long chain alkyl (butyl) and ester groups. The butyl chain is longer, and has certain flexibility. The butyl chain provides the ability to rotate freely in the molecule, so that the polymer chain can deform to a certain extent under the action of external force and is not easy to break. In the polymer network, the long chain alkyl part of the butyl acrylate monomer can increase the distance between polymer chains, so that the polymer network has higher elasticity and flexibility, and the flexibility of the thickener is improved. The ester group (-COO-) in butyl acrylate has certain polarity, and can interact with other polar molecules or surfaces to increase adhesion performance. In multiphase systems (e.g., emulsions), the ester groups can interact with the interface of the dispersed and continuous phases, improving the adhesion of the polymer at the interface and thus the stability of the thickener;
(2) Vinyl acetate is a vinyl monomer containing an ester group (-OCOCH 3). The ester groups in the vinyl acetate polymer chain can provide flexibility in the molecule, so that the polymer chain can deform to a certain extent under the action of external force. The segments of vinyl acetate formed in the polymer network are more flexible, increasing the elasticity and flexibility of the overall polymer network. The ester group (-OCOCH 3) in vinyl acetate has certain polarity, and can interact with other polar molecules or surfaces to increase adhesion performance. In a multiphase system, the ester groups in the vinyl acetate polymer chain can improve the adhesion capability at the interface, thereby improving the stability of the thickener;
(3) The ester groups of butyl acrylate and vinyl acetate can undergo hydrogen bonding, dipole-dipole interactions with other polymer chains or emulsifier molecules to form a stable polymer network. These interactions can form physical cross-links at the molecular level, enhancing the stability and adhesion properties of the polymer network. The long chain structure of butyl acrylate and vinyl acetate provides greater intermolecular space in the polymer network, reduces close packing between chains, and increases elasticity and flexibility of the whole system. This structure forms a more loose but stable network in the polymer network, which helps to increase the thickening effect and stability of the thickener.
The invention adds methoxy polyethylene glycol methacrylate and nonylphenol polyoxyethylene ether methacrylate into the thickener, which has the following functions:
(1) The methoxy polyethylene glycol methacrylate contains a hydrophilic polyethylene glycol (PEG) chain and a polymerizable methacrylate group, the PEG chain has strong hydrophilicity, and can attract and combine a large number of water molecules, so that the water molecules in an emulsion system form stable hydration, a good hydration shell layer is formed in a water phase, and aggregation and combination of oil drops in the emulsion are prevented, thereby improving the stability of the emulsion. The PEG chains can form physical crosslinking points in the water phase, and the physical crosslinking points form a stable three-dimensional network structure through the interaction of hydrogen bonds and Van der Waals force between the PEG chains, so that the thickening effect is improved;
(2) The nonylphenol polyoxyethylene ether methacrylate contains a hydrophobic nonylphenol group and a hydrophilic Polyoxyethylene (POE) chain. The nonylphenol group provides hydrophobicity, the POE chain provides hydrophilicity, and the amphiphilic structure can form surface active molecules in the emulsion, so that the surface tension of an oil-water interface is reduced, and the stability of the emulsion is improved;
(3) In the water phase, the amphiphilic structure of the polyoxyethylene nonyl phenyl ether methacrylate enables the polyoxyethylene nonyl phenyl ether methacrylate to spontaneously form micro micelles, and the micro micelles form a stable micelle structure in the water phase, so that the stability of emulsion is further improved, and the thickening effect is enhanced through physical crosslinking. And a stable interface layer can be formed on an oil-water interface, so that aggregation and combination of oil drops are prevented, and the uniformity and durability of the emulsion are improved.
In a preferred embodiment of the present invention, in step S1, the deionized water may be 300-360 parts by weight, for example, 300 parts, 306 parts, 312 parts, 318 parts, 324 parts, 330 parts, 336 parts, 342 parts, 348 parts, 354 parts or 360 parts, but not limited to the recited values, and other non-recited values within the range of values are equally applicable.
In some alternative examples, the acid and alkali resistant agent is 8-15 parts by weight, for example, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts, but not limited to the recited values, and other non-recited values within the range of values are equally applicable.
In some alternative examples, the emulsifier A is used in an amount of 30-60% by mass of the associative monomer, which may be, for example, 30%, 33%, 36%, 39%, 42%, 45%, 48%, 51%, 54%, 57% or 60%, but is not limited to the recited values, and other non-recited values within this range are equally applicable.
In some alternative examples, the stirring time is 60-90min, for example, 60min, 63min, 66min, 69min, 72min, 75min, 78min, 81min, 84min, 87min or 90min, but not limited to the recited values, and other non-recited values within the range are equally applicable.
In a preferred embodiment of the present invention, in the step S2, the first temperature is 40 to 50 ℃, for example, 40 ℃, 41 ℃, 42 ℃, 43 ℃, 44 ℃, 45 ℃, 46 ℃, 47 ℃, 48 ℃, 49 ℃, or 50 ℃, but the present invention is not limited to the above-mentioned values, and other values not mentioned in the above-mentioned value range are equally applicable.
In some alternative examples, the associative monomer may be 80-120 parts by weight, such as 80 parts, 84 parts, 88 parts, 92 parts, 96 parts, 100 parts, 104 parts, 108 parts, 112 parts, 116 parts, or 120 parts, but is not limited to the recited values, as other non-recited values within the range of values may be equally suitable.
In some alternative examples, the stirring time is 60-90min, for example, 60min, 63min, 66min, 69min, 72min, 75min, 78min, 81min, 84min, 87min or 90min, but not limited to the recited values, and other non-recited values within the range are equally applicable.
In step S3, the initiator may be 2 to 8 parts by weight, for example, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts or 8 parts, but the present invention is not limited to the recited values, and other non-recited values within the range are equally applicable.
In some alternative examples, the deionized water may be 50-60 parts by weight, such as 50 parts, 51 parts, 52 parts, 53 parts, 54 parts, 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, or 60 parts, but is not limited to the recited values, and other non-recited values within the range of values are equally applicable.
In some alternative examples, the stirring speed is 350-450rpm, which may be, for example, 350rpm, 360rpm, 370rpm, 380rpm, 390rpm, 400rpm, 410rpm, 420rpm, 430rpm, 440rpm or 450rpm, but is not limited to the recited values, as other non-recited values within the range of values may be equally suitable.
In some alternative examples, the stirring time is 60-90min, for example, 60min, 63min, 66min, 69min, 72min, 75min, 78min, 81min, 84min, 87min or 90min, but not limited to the recited values, and other non-recited values within the range are equally applicable.
In a preferred embodiment of the present invention, in step S4, the weight part of the methacrylic acid is 200 to 250 parts, for example, 200 parts, 205 parts, 210 parts, 215 parts, 220 parts, 225 parts, 230 parts, 235 parts, 240 parts, 245 parts or 250 parts, but the present invention is not limited to the recited values, and other non-recited values within the range of the recited values are equally applicable.
In some alternative examples, the butyl acrylate may be present in an amount of 100-150 parts by weight, such as 100 parts, 105 parts, 110 parts, 115 parts, 120 parts, 125 parts, 130 parts, 135 parts, 140 parts, 145 parts, or 150 parts, but is not limited to the recited values, as other non-recited values within the range of values may be equally suitable.
In some alternative examples, the vinyl acetate may be present in an amount of 50-100 parts by weight, such as 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 75 parts, 80 parts, 85 parts, 90 parts, 95 parts, or 100 parts, but is not limited to the recited values, as other non-recited values within the range of values may be equally suitable.
In some alternative examples, the emulsifier B is used in an amount of 10-30% by mass of the associative monomer, which may be, for example, 10%, 12%, 14%, 16%, 18%, 20%, 22%, 24%, 26%, 28% or 30%, but is not limited to the recited values, as other non-recited values within this range are equally applicable.
In some alternative examples, the auxiliary is 1-6 parts by weight, for example, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, or 6 parts, but is not limited to the recited values, and other non-recited values within the range are equally applicable.
In some alternative examples, the stirring time is 60-90min, for example, 60min, 63min, 66min, 69min, 72min, 75min, 78min, 81min, 84min, 87min or 90min, but not limited to the recited values, and other non-recited values within the range are equally applicable.
In a preferred embodiment of the present invention, in the step S5, the second temperature is 70 to 80 ℃, for example, 70 ℃, 71 ℃, 72 ℃, 73 ℃, 74 ℃,75 ℃, 76 ℃,77 ℃, 78 ℃, 79 ℃ or 80 ℃, but the present invention is not limited to the above-mentioned values, and other values not mentioned in the above-mentioned range are equally applicable.
In some alternative examples, the dropping speed is 1-2mL/min, for example, but not limited to, 1.0mL/min, 1.1mL/min, 1.2mL/min, 1.3mL/min, 1.4mL/min, 1.5mL/min, 1.6mL/min, 1.7mL/min, 1.8mL/min, 1.9mL/min, or 2.0mL/min, and other non-enumerated values within this numerical range are equally applicable.
In some alternative examples, the reaction time is 3-4h, which may be, for example, 3.0h, 3.1h, 3.2h, 3.3h, 3.4h, 3.5h, 3.6h, 3.7h, 3.8h, 3.9h, or 4.0h, although not limited to the recited values, other non-recited values within the range of values are equally applicable.
As a preferable technical scheme, the invention provides a preparation method of an acid and alkali resistant emulsion thickener for an anticorrosive paint, wherein the preparation method of the acid and alkali resistant emulsion thickener comprises the following steps:
Step I, aluminum silicate pretreatment, namely placing 14-24 parts by weight of aluminum silicate into a ball mill, adding steel balls for full grinding, taking out after grinding, and spraying and washing with deionized water to obtain fine aluminum silicate powder;
Step II, aluminum silicate modification, namely adding 10-20 parts by weight of deionized water, 50-70 parts by weight of isopropanol and epoxy silane into fine aluminum silicate powder, uniformly stirring, transferring the mixture into an oven after stirring, and heating to ensure that the mixture is completely dried;
Step III, curing treatment, namely heating in an oven to perform curing treatment, and naturally cooling the cured aluminum silicate to room temperature;
Step IV, ion exchange, mixing the modified aluminum silicate powder with ion exchange resin, and mixing by ultrasonic vibration;
And V, washing and drying, namely washing the ion-exchanged aluminum silicate powder by using deionized water, and drying in an oven to obtain the acid and alkali resistant agent.
According to the invention, firstly, aluminum silicate powder is modified, epoxy silane (3-epoxypropyltriethoxysilane, GPTMS) can undergo hydrolysis reaction in the presence of water to generate an intermediate containing silanol groups, the silanol groups can further react with hydroxyl (-OH) on the surface of aluminum silicate to form silicon-oxygen bonds (Si-O-Si) through condensation reaction, the epoxy silane is chemically bonded to the surface of aluminum silicate, and meanwhile, the epoxy groups in the epoxy silane still remain after silane coupling reaction, and can further react with other functional groups, such as hydroxyl (-OH) and amino (-NH 2) in resin to form a crosslinked structure, so that the reaction can further enhance the bonding strength and acid-alkali resistance of the modified aluminum silicate and a matrix material.
In the ion exchange process, the reaction of epoxy silane and resin can form a layer of siloxane network on the surface of the epoxy silane, and the layer of siloxane network can obviously improve the acid and alkali resistance of aluminum silicate, and the specific reasons are as follows: (1) The surface covering and shielding effect, the formed siloxane network covers the surface of aluminum silicate, and physical shielding is provided to prevent the acid-base medium from directly contacting with the aluminum silicate; (2) The chemical stability is enhanced, the siloxane network has high chemical stability and strong tolerance to acid-base medium, so that the acid-base resistance of aluminum silicate is improved; (3) The interfacial compatibility is improved, the reaction of the epoxy silane and the ion exchange resin can enhance the interfacial binding force of aluminum silicate and the organic resin, and the overall stability and durability of the composite material are improved.
In a preferred embodiment of the present invention, in the step i, the aluminum silicate is 14 to 24 parts by weight, and for example, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, and 24 parts may be used, but the present invention is not limited to the listed values, and other non-listed values within the range of the values are equally applicable.
In some alternative examples, the steel ball has a diameter of 4-6mm, which may be, for example, 4.2 mm, 4.4 mm, 4.6 mm, 4.8 mm, 5.0 mm, 5.2 mm, 5.4 mm, 5.6 mm, 5.8 mm, or 6.0 mm, but is not limited to the recited values, and other non-recited values within the range of values are equally applicable.
In a preferred embodiment of the present invention, in the step ii, the deionized water is 10 to 20 parts by weight, and for example, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts or 20 parts may be used, but the present invention is not limited to the listed values, and other non-listed values within the range of the values are equally applicable.
In some alternative examples, the isopropyl alcohol is 50-70 parts by weight, and may be, for example, 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts, 62 parts, 64 parts, 66 parts, 68 parts, or 70 parts, but is not limited to the recited values, and other non-recited values within the range of values are equally applicable.
In some alternative examples, the epoxy silane may be used in an amount of 1-10% by weight of the aluminum silicate, such as 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9% or 10%, but is not limited to the recited values, as other non-recited values within the range are equally applicable.
In some alternative examples, the stirring time is 30-60min, for example, 30min, 33 min, 36 min, 39 min, 42 min, 45 min, 48 min, 51 min, 54 min, 57 min, or 60min, but not limited to the recited values, and other non-recited values within the range are equally applicable.
In some alternative examples, the drying temperature is 60-80 ℃, such as 60 ℃, 62 ℃, 64 ℃, 66 ℃, 68 ℃, 70 ℃, 72 ℃, 74 ℃, 76 ℃, 78 ℃, or 80 ℃, but is not limited to the recited values, and other non-recited values within the range are equally applicable.
In a preferred embodiment of the present invention, in the step III, the heating temperature is 100 to 150℃and may be, for example, 100℃105℃110℃115℃120℃125℃130℃135℃140℃145℃150℃but not limited to the values listed, and other values not listed in the range are equally applicable.
In a preferred embodiment of the present invention, in the step iv, the power of the ultrasonic vibration is 2000 to 3000w, for example, 2000W, 2100W, 2200W, 2300W, 2400W, 2500W, 2600W, 2700W, 2800W, 2900W or 3000W may be used, but the present invention is not limited to the above-mentioned values, and other values not listed in the above-mentioned range are equally applicable.
In some alternative examples, the frequency of the ultrasonic vibration is 60 to 80khz, for example, 60 kHz, 62 kHz, 64 kHz, 66 kHz, 68 kHz, 70 kHz, 72 kHz, 74 kHz, 76 kHz, 78 kHz or 80kHz may be used, but not limited to the recited values, and other non-recited values within the range of values are equally applicable.
In some alternative examples, the time of the ultrasonic vibration is 20-40min, for example, 20 min, 22 min, 24 min, 26 min, 28 min, 30min, 32 min, 34 min, 36 min, 38 min or 40min, but not limited to the recited values, and other non-recited values within the range are equally applicable.
In a preferred embodiment of the present invention, the drying temperature in the step V is 50 to 70℃and may be, for example, 50℃52℃54℃56℃58℃60℃62℃64℃66℃68℃70℃but is not limited to the values listed, and other values not listed in the range are equally applicable.
In a second aspect, the invention provides an acid and alkali resistant emulsion thickener for anti-corrosive paint prepared by the preparation method in the first aspect.
In a third aspect, the invention provides a preparation method of an anticorrosive paint, which comprises the following components in parts by weight: 30-80 parts of film forming substances, 10-35 parts of acid and alkali resistant emulsion thickener, 1-5 parts of pigment, 1-5 parts of auxiliary agent and 20-50 parts of solvent, and uniformly mixing.
As a preferred embodiment of the present invention, the film forming material may be 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 75 parts or 80 parts, the acid and alkali resistant emulsion thickener may be 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts or 25 parts, the pigment may be 1 part, 2 parts, 3 parts, 4 parts or 5 parts, the auxiliary may be 1 part, 2 parts, 3 parts, 4 parts or 5 parts, the solvent may be 20 parts, 23 parts, 26 parts, 29 parts, 32 parts, 35 parts, 38 parts, 41 parts, 44 parts, 47 parts or 50 parts, but not limited to the listed values, and other non-listed values within the range of the values may be equally applicable.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the invention, aluminum silicate is modified, an intermediate containing silanol groups generated by hydrolysis reaction of epoxy silane is reacted with hydroxyl (-OH) on the surface of the aluminum silicate, and a condensation reaction is performed to form a silicon-oxygen bond (Si-O-Si), so that the epoxy silane is chemically bonded to the surface of the aluminum silicate. Meanwhile, epoxy groups in the epoxy silane still remain after the silane coupling reaction, and can further react with other functional groups, such as hydroxyl (-OH), amino (-NH 2) and the like in the resin to form a cross-linked structure, so that the bonding strength and acid and alkali resistance of the modified aluminum silicate and a matrix material can be further enhanced. The modified aluminum silicate is blended into the preparation of the thickener, so that the thickening effect of the thickener on articles is slightly influenced by pH value, the stability of the thickener is effectively improved, and the thickening effect of the thickener under different pH values is not influenced;
(2) The ester groups of butyl acrylate and vinyl acetate in the present invention can undergo hydrogen bonding, dipole-dipole interactions with other polymer chains or emulsifier molecules to form a stable polymer network. These interactions can form physical cross-links at the molecular level, enhancing the stability and adhesion properties of the polymer network. The long chain structure of butyl acrylate and vinyl acetate provides greater intermolecular space in the polymer network, reduces close packing between chains, and increases elasticity and flexibility of the whole system. The structure forms a looser but stable network structure in the polymer network, which is helpful for improving the thickening effect and stability of the thickener;
(3) The methoxy polyethylene glycol methacrylate contains a hydrophilic polyethylene glycol (PEG) chain, can attract and combine a large amount of water molecules, ensures that the water molecules in an emulsion system form stable hydration, forms a good hydration shell layer in a water phase, and improves the stability of the emulsion. And the PEG chains can form physical crosslinking points in the water phase, and the physical crosslinking points form a stable three-dimensional network structure through the interaction of hydrogen bonds and Van der Waals force between the PEG chains, so that the thickening effect is improved. The nonylphenol polyoxyethylene ether methacrylate contains an amphiphilic structure, the amphiphilic structure enables the nonylphenol polyoxyethylene ether methacrylate to spontaneously form micro-micelles, the micro-micelles form a stable micelle structure in a water phase, the stability of emulsion is further improved, the thickening effect is enhanced through physical crosslinking, a stable interface layer can be formed on an oil-water interface, and the uniformity and durability of the emulsion are improved.
Drawings
FIG. 1 is a flow chart of the preparation process of the acid and alkali resistant emulsion thickener for anti-corrosive paint provided in examples 1-6 of the present invention;
FIG. 2 is an SEM image of aluminum silicate prepared in example 1 of the present invention;
FIG. 3 is a TEM image of aluminum silicate prepared in example 1 of the present invention.
Detailed Description
The technical scheme of the application is described in detail below with reference to specific embodiments and attached drawings. The examples described herein are specific embodiments of the present application for illustrating the concept of the present application; the description is intended to be illustrative and exemplary in nature and should not be construed as limiting the scope of the application in its aspects. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and the specification thereof, including those adopting any obvious substitutions and modifications to the embodiments described herein.
The chemical reagents used in the examples and comparative examples of the present invention are all commercial products, and the brands, specifications and manufacturer information are as follows:
Fatty alcohol polyoxyethylene ether with purity more than or equal to 99% is purchased from Shanghai Pont high chemistry Co., ltd;
fatty alcohol polyoxyethylene ether sodium sulfate with purity more than or equal to 99%, which is purchased from Shandong Zibo Hajie chemical industry Co., ltd;
Sodium laurinol polyoxyethylene ether sulfate, active matter content 70%, purchased from Shandong Tongfeng chemical industry Co., ltd;
methoxy polyethylene glycol methacrylate with purity of more than or equal to 99 percent, which is purchased from Liaoning Colon fine chemical company, inc.;
The purity of the polyoxyethylene nonyl phenyl ether methacrylate is more than or equal to 99 percent, and the polyoxyethylene nonyl phenyl ether methacrylate is purchased from Nanjing Xindada chemical industry Co., ltd;
3-epoxypropyltriethoxysilane. The purity is more than or equal to 97 percent, and the product is purchased from Shandong silicon new material Co., ltd;
Other raw materials are available in the market.
Example 1
The embodiment provides a preparation method of an acid and alkali resistant emulsion thickener for an anticorrosive paint, as shown in fig. 1, which specifically comprises the following steps:
Step I, aluminum silicate pretreatment, namely placing 18g of aluminum silicate into a ball mill, adding steel balls for full grinding, taking out after grinding, and spraying and washing with deionized water to obtain fine aluminum silicate powder;
Step II, aluminum silicate modification, namely adding 14g of deionized water, 67g of isopropanol and 0.9g of epoxy silane into fine aluminum silicate powder in a container A, stirring for 40min, transferring the mixture into an oven after stirring, and heating at 71 ℃ to ensure that the mixture is completely dried;
Step III, curing, namely heating in an oven at 135 ℃ to perform curing, and naturally cooling the cured aluminum silicate to room temperature;
Step IV, ion exchange, mixing the modified aluminum silicate powder with ion exchange resin, and mixing by ultrasonic vibration;
Step V, washing and drying, namely washing the ion-exchanged aluminum silicate powder by deionized water, and drying in an oven to obtain an acid-alkali resistant agent;
Step S1, adding raw materials, mixing 320g of deionized water with 9g of acid and alkali resistant agent, starting a stirring device, adding 36g of fatty alcohol polyoxyethylene ether sodium sulfate, and stirring for 65min to obtain a mixed solution A;
step S2, emulsification pretreatment, namely heating a reaction kettle to 45 ℃, adding 90g of methoxy polyethylene glycol methacrylate, and continuously stirring for 72 minutes to obtain a mixed solution B;
Step S3, preparing an initiating liquid, namely preparing the initiating liquid by using 4g of ammonium persulfate and 54g of deionized water;
S4, emulsifying a main monomer, sequentially adding 230g of methacrylic acid, 126g of butyl acrylate, 80g of vinyl acetate and 18g of sodium laureth sulfate into a reaction kettle, adding 3g of disodium ethylenediamine tetraacetate, and stirring to obtain a precursor solution A;
And S5, carrying out polymerization reaction, namely raising the temperature of the precursor solution A to 75 ℃, slowly dripping an initiating solution into the precursor solution A at a speed of 1.3mL/min, fully reacting for 3.5h, and then reducing the temperature to below 40 ℃ to obtain a final product.
The embodiment also provides an anticorrosive paint, which comprises a film forming substance, an acid-base resistant thickener, a pigment, an auxiliary agent and a solvent, and the preparation method comprises the following steps: 47g of film forming substance, 17g of acid and alkali resistant thickener, 2g of pigment, 3g of auxiliary agent and 30g of solvent, and uniformly mixing to obtain the anticorrosive paint.
Fig. 2 and 3 are SEM images and TEM images of the modified aluminum silicate prepared in example 1, and it can be seen that the size of the material is 100nm.
Example 2
The embodiment provides a preparation method of an acid and alkali resistant emulsion thickener for an anticorrosive paint, as shown in fig. 1, which specifically comprises the following steps:
step I, aluminum silicate pretreatment, namely putting 16g of aluminum silicate into a ball mill, adding steel balls for full grinding, taking out after grinding, and spraying and washing with deionized water to obtain fine aluminum silicate powder;
step II, aluminum silicate modification, namely adding 18g of deionized water, 55g of isopropanol and 1.12g of epoxy silane into fine aluminum silicate powder in a container A, stirring for 52min, transferring the mixture into an oven after stirring, and heating at 66 ℃ to ensure that the mixture is completely dried;
step III, curing, namely heating in a baking oven at 132 ℃ to perform curing, and naturally cooling the cured aluminum silicate to room temperature;
Step IV, ion exchange, mixing the modified aluminum silicate powder with ion exchange resin, and mixing by ultrasonic vibration;
Step V, washing and drying, namely washing the ion-exchanged aluminum silicate powder by deionized water, and drying in an oven to obtain an acid-alkali resistant agent;
Step S1, adding raw materials, mixing 330g of deionized water with 13g of acid and alkali resistant agent, starting a stirring device, adding 44g of fatty alcohol-polyoxyethylene ether, and stirring for 80min to obtain a mixed solution A;
Step S2, emulsification pretreatment, namely heating a reaction kettle to 48 ℃, adding 110g of methoxy polyethylene glycol methacrylate, and continuously stirring for 70min to obtain a mixed solution B;
step S3, preparing an initiating liquid, namely preparing the initiating liquid by using 6g of sodium hydrogen sulfite and 60g of deionized water;
s4, emulsifying a main monomer, sequentially adding 220g of methacrylic acid, 130g of butyl acrylate, 65g of vinyl acetate and 11g of sodium laureth sulfate into a reaction kettle, adding 4g of trisodium phosphate, and keeping stirring to obtain a precursor solution A;
And S5, carrying out polymerization reaction, namely raising the temperature of the precursor solution A to 73 ℃, slowly dripping an initiating solution into the precursor solution A at a speed of 1.6mL/min, fully reacting for 3.3 hours, and then reducing the temperature to below 40 ℃ to obtain a final product.
The embodiment also provides an anticorrosive paint, which comprises a film forming substance, an acid-base resistant thickener, a pigment, an auxiliary agent and a solvent, and the preparation method comprises the following steps: 56g of film forming substance, 20g of acid and alkali resistant thickener, 3g of pigment, 4g of auxiliary agent and 27g of solvent, and uniformly mixing to obtain the anticorrosive paint.
Example 3
The embodiment provides a preparation method of an acid and alkali resistant emulsion thickener for an anticorrosive paint, as shown in fig. 1, which specifically comprises the following steps:
Step I, aluminum silicate pretreatment, namely putting 21g of aluminum silicate into a ball mill, adding steel balls for full grinding, taking out after grinding, and spraying and washing with deionized water to obtain fine aluminum silicate powder;
Step II, aluminum silicate modification, namely adding 13g of deionized water, 50g of isopropanol and 0.63g of epoxy silane into fine aluminum silicate powder in a container A, stirring for 49min, transferring the mixture into an oven after stirring, and heating at 77 ℃ to ensure that the mixture is completely dried;
step III, curing, namely heating in an oven at 118 ℃ to perform curing, and naturally cooling the cured aluminum silicate to room temperature;
Step IV, ion exchange, mixing the modified aluminum silicate powder with ion exchange resin, and mixing by ultrasonic vibration;
Step V, washing and drying, namely washing the ion-exchanged aluminum silicate powder by deionized water, and drying in an oven to obtain an acid-alkali resistant agent;
Step S1, adding raw materials, mixing 350g of deionized water with 15g of acid and alkali resistant agent, starting a stirring device, adding 38g of fatty alcohol polyoxyethylene ether sodium sulfate, and stirring for 70min to obtain a mixed solution A;
Step S2, emulsification pretreatment, namely heating a reaction kettle to 50 ℃, adding 100g of methoxy polyethylene glycol methacrylate, and continuously stirring for 78min to obtain a mixed solution B;
Step S3, preparing an initiating liquid, namely preparing the initiating liquid by using 5g of ammonium persulfate and 57g of deionized water;
S4, emulsifying a main monomer, sequentially adding 218g of methacrylic acid, 126g of butyl acrylate, 79g of vinyl acetate and 19g of sodium laureth sulfate into a reaction kettle, adding 5g of trisodium phosphate, and keeping stirring to obtain a precursor solution A;
and S5, carrying out polymerization reaction, namely raising the temperature of the precursor solution A to 76 ℃, slowly dripping an initiating solution into the precursor solution A at a speed of 1.8mL/min, fully reacting for 3.7h, and then reducing the temperature to below 40 ℃ to obtain a final product.
The embodiment also provides an anticorrosive paint, which comprises a film forming substance, an acid-base resistant thickener, a pigment, an auxiliary agent and a solvent, and the preparation method comprises the following steps: 49g of film forming substance, 22g of acid and alkali resistant thickener, 2g of pigment, 3g of auxiliary agent and 36g of solvent, and uniformly mixing to obtain the anticorrosive paint.
Example 4
The embodiment provides a preparation method of an acid and alkali resistant emulsion thickener for an anticorrosive paint, as shown in fig. 1, which specifically comprises the following steps:
Step I, aluminum silicate pretreatment, namely putting 21g of aluminum silicate into a ball mill, adding steel balls for full grinding, taking out after grinding, and spraying and washing with deionized water to obtain fine aluminum silicate powder;
Step II, aluminum silicate modification, namely adding 17g of deionized water, 70g of isopropanol and 1.68g of epoxy silane into fine aluminum silicate powder in a container A, stirring for 43min, transferring the mixture into an oven after stirring, and heating at 70 ℃ to ensure that the mixture is completely dried;
Step III, curing, namely heating in an oven at 129 ℃ to perform curing, and naturally cooling the cured aluminum silicate to room temperature;
Step IV, ion exchange, mixing the modified aluminum silicate powder with ion exchange resin, and mixing by ultrasonic vibration;
Step V, washing and drying, namely washing the ion-exchanged aluminum silicate powder by deionized water, and drying in an oven to obtain an acid-alkali resistant agent;
Step S1, adding raw materials, mixing 339g of deionized water with 11g of acid and alkali resistant agent, starting a stirring device, adding 40g of fatty alcohol polyoxyethylene ether sodium sulfate salt, and stirring for 64min to obtain a mixed solution A;
S2, emulsification pretreatment, namely heating a reaction kettle to 44 ℃, adding 108g of methoxy polyethylene glycol methacrylate, and continuously stirring for 68 minutes to obtain a mixed solution B;
step S3, preparing an initiating liquid, namely preparing the initiating liquid by using 3g of sodium hydrogen sulfite and 50g of deionized water;
S4, emulsifying a main monomer, sequentially adding 233g of methacrylic acid, 131g of butyl acrylate, 79g of vinyl acetate and 16g of sodium laureth sulfate into a reaction kettle, adding 2g of disodium ethylenediamine tetraacetate, and stirring to obtain a precursor solution A;
and S5, carrying out polymerization reaction, namely raising the temperature of the precursor solution A to 80 ℃, slowly dripping the initiating solution A into the precursor solution A at the speed of 1.7mL/min, fully reacting for 3.9h, and then reducing the temperature to below 40 ℃ to obtain a final product.
The embodiment also provides an anticorrosive paint, which comprises a film forming substance, an acid-base resistant thickener, a pigment, an auxiliary agent and a solvent, and the preparation method comprises the following steps: 61g of film forming material, 19g of acid and alkali resistant thickener, 3g of pigment, 3g of auxiliary agent and 31g of solvent, and uniformly mixing to obtain the anticorrosive paint.
Example 5
The embodiment provides a preparation method of an acid and alkali resistant emulsion thickener for an anticorrosive paint, as shown in fig. 1, which specifically comprises the following steps:
step I, aluminum silicate pretreatment, namely putting 14g of aluminum silicate into a ball mill, adding steel balls for full grinding, taking out after grinding, and spraying and washing with deionized water to obtain fine aluminum silicate powder;
Step II, aluminum silicate modification, namely adding 20g of deionized water, 70g of isopropanol and 0.56g of epoxy silane into fine aluminum silicate powder in a container A, stirring for 40min, transferring the mixture into an oven after stirring, and heating at 80 ℃ to ensure that the mixture is completely dried;
step III, curing, namely heating in an oven at 147 ℃ to perform curing, and naturally cooling the cured aluminum silicate to room temperature;
Step IV, ion exchange, mixing the modified aluminum silicate powder with ion exchange resin, and mixing by ultrasonic vibration;
Step V, washing and drying, namely washing the ion-exchanged aluminum silicate powder by deionized water, and drying in an oven to obtain an acid-alkali resistant agent;
step S1, adding raw materials, adding 324g of deionized water and 10g of acid and alkali resistant agent into a reaction kettle, starting a stirring device, adding 37g of fatty alcohol polyoxyethylene ether sodium sulfate salt, and stirring for 79min to obtain a mixed solution A;
S2, emulsification pretreatment, namely heating a reaction kettle to 43 ℃, adding 98g of polyoxyethylene nonylphenol methacrylate, and continuously stirring for 80 minutes to obtain a mixed solution B;
step S3, preparing an initiating liquid, namely preparing the initiating liquid by using 7g of sodium hydrogen sulfite and 60g of deionized water;
S4, emulsifying a main monomer, sequentially adding 241g of methacrylic acid, 119g of butyl acrylate, 68g of vinyl acetate and 21g of sodium laureth sulfate into a reaction kettle, adding 3g of disodium ethylenediamine tetraacetate, and stirring to obtain a precursor solution A;
and S5, carrying out polymerization reaction, namely raising the temperature of the precursor solution A to 76 ℃, slowly dripping an initiating solution into the precursor solution A at a speed of 1.9mL/min, fully reacting for 3.3 hours, and then reducing the temperature to below 40 ℃ to obtain a final product.
The embodiment also provides an anticorrosive paint, which comprises a film forming substance, an acid-base resistant thickener, a pigment, an auxiliary agent and a solvent, and the preparation method comprises the following steps: 47g of film forming material, 16g of acid and alkali resistant thickener, 3g of pigment, 4g of auxiliary agent and 44g of solvent, and uniformly mixing to obtain the anticorrosive paint.
Example 6
The embodiment provides a preparation method of an acid and alkali resistant emulsion thickener for an anticorrosive paint, as shown in fig. 1, which specifically comprises the following steps:
step I, aluminum silicate pretreatment, namely putting 16g of aluminum silicate into a ball mill, adding steel balls for full grinding, taking out after grinding, and spraying and washing with deionized water to obtain fine aluminum silicate powder;
step II, aluminum silicate modification, namely adding 18g of deionized water, 55g of isopropanol and 0.48g of epoxy silane into fine aluminum silicate powder in a container A, stirring for 52min, transferring the mixture into an oven after stirring, and heating at 66 ℃ to ensure that the mixture is completely dried;
step III, curing, namely heating in a baking oven at 132 ℃ to perform curing, and naturally cooling the cured aluminum silicate to room temperature;
Step IV, ion exchange, mixing the modified aluminum silicate powder with ion exchange resin, and mixing by ultrasonic vibration;
Step V, washing and drying, namely washing the ion-exchanged aluminum silicate powder by deionized water, and drying in an oven to obtain an acid-alkali resistant agent;
Step S1, adding raw materials, adding 317g of deionized water and 9g of acid and alkali resistant agent into a reaction kettle, starting a stirring device, adding 35g of fatty alcohol polyoxyethylene ether sodium sulfate salt, and stirring for 86min to obtain a mixed solution A;
S2, emulsification pretreatment, namely heating a reaction kettle to 48 ℃, adding 96g of methoxy polyethylene glycol methacrylate, and continuously stirring for 76 minutes to obtain a mixed solution B;
Step S3, preparing an initiating liquid, namely preparing the initiating liquid by using 5g of ammonium persulfate and 57g of deionized water;
step S4, emulsifying a main monomer, sequentially adding 226g of methacrylic acid, 128g of butyl acrylate, 72g of vinyl acetate and 12g of sodium laureth sulfate into a reaction kettle, adding 2g of disodium ethylenediamine tetraacetate, and stirring to obtain a precursor solution A;
And S5, carrying out polymerization reaction, namely raising the temperature of the precursor solution A to 72 ℃, slowly dripping an initiating solution into the precursor solution A at a speed of 1.4mL/min, fully reacting for 3.9h, and then reducing the temperature to below 40 ℃ to obtain a final product.
The embodiment also provides an anticorrosive paint, which comprises a film forming substance, an acid-base resistant thickener, a pigment, an auxiliary agent and a solvent, and the preparation method comprises the following steps: 51g of film forming substance, 22g of acid and alkali resistant thickener, 4g of pigment, 2g of auxiliary agent and 34g of solvent, and uniformly mixing to obtain the anticorrosive paint.
Comparative example 1
The present example provides a preparation method of an acid and alkali resistant emulsion thickener for anti-corrosive paint, which is different from example 1 in that in step S1, the mass of the sodium salt of fatty alcohol polyoxyethylene ether sulfate is adjusted to 20 parts by weight, compared with example 1, the mass of the sodium salt of fatty alcohol polyoxyethylene ether sulfate in this example is reduced by 16 parts, the reduced 16 parts are added to deionized water, acid and alkali resistant agent, methoxypolyethylene glycol methacrylate, ammonium persulfate, methacrylic acid, butyl acrylate, vinyl acetate, sodium laureth sulfate, and disodium edetate in equal proportion, so that the proportion of the mass parts between other components of the sodium salt of fatty alcohol polyoxyethylene ether sulfate is unchanged, and other process parameters and operation steps are identical to example 1.
Comparative example 2
The present example provides a preparation method of an acid and alkali resistant emulsion thickener for anti-corrosive paint, which is different from example 1 in that in step S1, the mass of the sodium salt of fatty alcohol polyoxyethylene ether sulfate is adjusted to 60 parts by weight, compared with example 1, the mass of the sodium salt of fatty alcohol polyoxyethylene ether sulfate in this example is increased by 24 parts, and the increased 24 parts are subtracted from the mass of deionized water, acid and alkali resistant agent, methoxypolyethylene glycol methacrylate, ammonium persulfate, methacrylic acid, butyl acrylate, vinyl acetate, sodium laureth sulfate, disodium ethylenediamine tetraacetate, etc., so that the proportion of the mass parts between the other components of the sodium salt of fatty alcohol polyoxyethylene ether sulfate is unchanged, and other process parameters and operation steps are identical to those of example 1.
Comparative example 3
The present example provides a preparation method of an acid and alkali resistant emulsion thickener for anti-corrosive paint, which is different from example 1 in that in step S4, the mass of methacrylic acid is adjusted to 180 parts by weight, compared with example 1, the mass of methacrylic acid in this example is reduced by 50 parts, and the reduced 50 parts are added to deionized water, acid and alkali resistant agent, sodium fatty alcohol polyoxyethylene ether sulfate, methoxypolyethylene glycol methacrylate, ammonium persulfate, butyl acrylate, vinyl acetate, sodium laureth sulfate, disodium ethylenediamine tetraacetate in equal proportion, so that the proportion of the mass parts among other components except methacrylic acid is unchanged, and other process parameters and operation steps are identical to example 1.
Comparative example 4
The present example provides a preparation method of an acid and alkali resistant emulsion thickener for anti-corrosive paint, which is different from example 1 in that in step S4, the mass of methacrylic acid is adjusted to 270 parts by weight, compared with example 1, the mass of methacrylic acid is increased by 40 parts, and the 40 parts added are subtracted from the deionized water, the acid and alkali resistant agent, the sodium salt of fatty alcohol polyoxyethylene ether sulfate, methoxypolyethylene glycol methacrylate, ammonium persulfate, butyl acrylate, vinyl acetate, sodium laureth sulfate, disodium ethylenediamine tetraacetate, etc., so that the mass proportion of other components except methacrylic acid is unchanged, and other process parameters and operation steps are identical to those of example 1.
The viscosities of examples 1-6 and comparative examples 1-4 were tested according to national standard GB/T9269-2009, respectively.
As can be seen from the data in Table 1, the viscosity performance of the anticorrosive paint prepared in examples 1 to 6 is higher than that of the anticorrosive paint prepared in comparative examples 1 to 4 at different pH values, which indicates that the anticorrosive paint prepared by the preparation method provided by the invention has excellent acid and alkali resistance.
Table 1 test data for viscosity of anti-corrosive paint
As can be seen from the test data of example 1, comparative example 1 and comparative example 2, the viscosity of the anticorrosive paint of comparative example 1 and comparative example 2 is lower than that of example 1 at different pH values, which indicates that the acid and alkali resistance of the anticorrosive paint prepared in comparative example 1 and comparative example 2 is inferior to that of example 1. This is because the content of the sodium salt of the fatty alcohol-polyoxyethylene ether sulfate as the emulsifier in comparative example 1 is too low, so that oil drops cannot be completely coated, the oil drops are easy to aggregate and combine, an oil-water interface cannot be effectively stabilized, the dispersion effect of an oil phase and a water phase is poor, the viscosity is uneven, and the overall thickening effect of the thickener is affected; however, the fatty alcohol-polyoxyethylene ether sodium sulfate in comparative example 2 has too high content, and free micelles are formed in the emulsion, and these micelles cannot effectively participate in the structural construction of the thickener, resulting in a decrease in viscosity. The polymer network is difficult to form, the performance of the acid-base resistant emulsion thickener is affected, and the acid-base resistance of the finally prepared anti-corrosion coating is further affected.
As can be seen from the test data of example 1, comparative example 3 and comparative example 4, the viscosity of the anticorrosive paint of comparative example 3 and comparative example 4 is lower than that of example 1 at different pH values, which indicates that the acid and alkali resistance of the anticorrosive paint prepared in comparative example 3 and comparative example 4 is inferior to that of example 1. This is because the too low content of methacrylic acid as the main monomer in comparative example 3 reduces polar molecules in the system, thereby reducing the hydrogen bonding force with water, reducing crosslinking points in the polymer, resulting in a decrease in the crosslinking density of the polymer, and resulting in insufficient adhesion; in contrast, the methacrylic acid content in comparative example 4 is too high, the polarity and acidity of the methacrylic acid are strong, and excessive methacrylic acid can cause too strong hydrophilicity of the polymer, so that the solubility in an organic solvent is poor, the dispersibility and uniformity of the product are affected, the performance of an acid-base resistant emulsion thickener is affected, and the acid-base resistance of the finally prepared anti-corrosive paint is further affected.
The applicant declares that the above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present invention disclosed by the present invention fall within the scope of the present invention and the disclosure.
Claims (10)
1. A method for preparing an acid and alkali resistant emulsion thickener for an anticorrosive paint, which is characterized by comprising the following steps:
Step S1, adding raw materials, mixing 300-360 parts by weight of deionized water with 8-15 parts by weight of acid and alkali resistant agent, starting a stirring device, adding an emulsifying agent A, and stirring to obtain a mixed solution A;
S2, emulsification pretreatment, namely heating the mixed solution A to a first temperature, adding 80-120 parts by weight of associated monomers, and continuously stirring to obtain a mixed solution B;
Step S3, preparing an initiating liquid by using 2-8 parts by weight of initiator and 50-60 parts by weight of deionized water;
S4, emulsifying a main monomer, sequentially adding 200-250 parts by weight of methacrylic acid, 100-150 parts by weight of butyl acrylate, 50-100 parts by weight of vinyl acetate and an emulsifier B into a mixed solution B, adding 1-6 parts by weight of an auxiliary agent, and stirring to obtain a precursor solution A;
And S5, carrying out polymerization reaction, namely raising the temperature of the precursor solution A to a second temperature, initiating liquid drop into the precursor solution A, and lowering the temperature to be lower than a third temperature after the full reaction is finished to obtain a final product.
2. The method for preparing the acid and alkali resistant emulsion thickener for anticorrosive paint according to claim 1, wherein the method comprises the following steps:
in the step S1, the emulsifier A is one or more of fatty alcohol polyoxyethylene ether and fatty alcohol polyoxyethylene ether sodium sulfate emulsifier; the usage amount of the emulsifier A is 30-60% of the mass of the associated monomer; after the emulsifier A is added, stirring for 60-90min;
in the step S2, the first temperature is 40-50 ℃; the stirring time is 60-90min; the association monomer is one or a mixture of methoxy polyethylene glycol methacrylate and nonylphenol polyoxyethylene ether methacrylate;
in the step S3, the initiator is one or a mixture of two of sodium hydrogen sulfite and ammonium persulfate; the preparation method of the initiating liquid comprises the following steps: dissolving the initiator in water, and stirring at a speed of 350-450 rpm on a magnetic stirrer for 60-90min.
3. The method for preparing the acid and alkali resistant emulsion thickener for anticorrosive paint according to claim 1, wherein the method comprises the following steps:
In the step S4, the emulsifier B is sodium laureth sulfate; the usage amount of the emulsifier B is 10-30% of the mass of the associated monomer; the auxiliary agent is one or a mixture of trisodium phosphate and disodium ethylenediamine tetraacetate; the stirring time is 60-90min;
In the step S5, the second temperature is 70-80 ℃; the dropping speed is 1-2mL/min; the reaction time is 3-4h; the third temperature is 40 ℃.
4. The method for preparing the acid and alkali resistant emulsion thickener for anticorrosive paint according to claim 1, wherein the method for preparing the acid and alkali resistant emulsion thickener comprises the following steps:
Step I, aluminum silicate pretreatment, namely placing 14-24 parts by weight of aluminum silicate into a ball mill, adding steel balls for full grinding, taking out after grinding, and spraying and washing with deionized water to obtain fine aluminum silicate powder;
Step II, aluminum silicate modification, namely adding 10-20 parts by weight of deionized water, 50-70 parts by weight of isopropanol and epoxy silane into fine aluminum silicate powder, uniformly stirring, transferring the mixture into an oven after stirring, and heating to ensure that the mixture is completely dried;
Step III, curing treatment, namely heating in an oven to perform curing treatment, and naturally cooling the cured aluminum silicate to room temperature;
Step IV, ion exchange, mixing the modified aluminum silicate powder with ion exchange resin, and mixing by ultrasonic vibration;
And V, washing and drying, namely washing the ion-exchanged aluminum silicate powder by using deionized water, and drying in an oven to obtain the acid and alkali resistant agent.
5. The method for preparing the acid and alkali resistant emulsion thickener for anticorrosive paint according to claim 4, wherein the method comprises the following steps:
in the step I, the diameter of the steel ball is 4-6mm;
In the step II, the epoxy silane is 3-epoxypropyl triethoxy silane; the dosage of the epoxy silane is 1-10% of the weight of the aluminum silicate; the stirring time is 30-60min; the drying temperature is 60-80 ℃;
In the step III, the heating temperature is 100-150 ℃;
in the step IV, the power of the ultrasonic vibration is 2000-3000W;
the frequency of the ultrasonic vibration is 60-80 kHz;
the ultrasonic vibration time is 20-40min;
In the step V, the drying temperature is 50-70 ℃.
6. An acid and alkali resistant emulsion thickener for anticorrosive paint prepared by the preparation method of any one of claims 1 to 5.
7. The anticorrosive paint is characterized by comprising the following components in parts by weight: 30-80 parts of film forming substances, 10-35 parts of acid and alkali resistant emulsion thickener according to claim 6, 1-5 parts of pigment, 1-5 parts of auxiliary agent and 20-50 parts of solvent, and uniformly mixing.
8. The anticorrosive paint of claim 7, wherein:
the film forming material is one or the combination of two of phenolic resin, epoxy resin or chlorinated polyethylene;
The pigment is rutile titanium dioxide.
9. The anticorrosive paint of claim 7, wherein:
The auxiliary agent is an anti-sagging agent, a dispersing agent, a leveling agent and an antifoaming agent, and the mass ratio of the anti-sagging agent to the dispersing agent to the leveling agent to the antifoaming agent is 5:3:1.5:0.5;
the solvent is one of benzene, xylene or butanol.
10. The anticorrosive coating of claim 9 wherein the anti-sagging agent is one or more combinations of bentonite, montmorillonite or kaolin.
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