CN111004557A - Nano modified epoxy heavy-duty anticorrosive paint - Google Patents
Nano modified epoxy heavy-duty anticorrosive paint Download PDFInfo
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- CN111004557A CN111004557A CN201911061360.1A CN201911061360A CN111004557A CN 111004557 A CN111004557 A CN 111004557A CN 201911061360 A CN201911061360 A CN 201911061360A CN 111004557 A CN111004557 A CN 111004557A
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- nano
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- agent
- modified epoxy
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- 239000004593 Epoxy Substances 0.000 title claims abstract description 55
- 239000003973 paint Substances 0.000 title claims abstract description 28
- 238000000576 coating method Methods 0.000 claims abstract description 61
- 239000011248 coating agent Substances 0.000 claims abstract description 58
- 239000002086 nanomaterial Substances 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 239000003822 epoxy resin Substances 0.000 claims abstract description 18
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 18
- 238000005260 corrosion Methods 0.000 claims abstract description 17
- 239000012046 mixed solvent Substances 0.000 claims abstract description 16
- 244000226021 Anacardium occidentale Species 0.000 claims abstract description 11
- 239000004952 Polyamide Substances 0.000 claims abstract description 11
- 235000020226 cashew nut Nutrition 0.000 claims abstract description 11
- 229920002647 polyamide Polymers 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000010466 nut oil Substances 0.000 claims abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 239000000049 pigment Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000013556 antirust agent Substances 0.000 claims abstract description 7
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000008096 xylene Substances 0.000 claims description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000005543 nano-size silicon particle Substances 0.000 claims description 6
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 6
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 3
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 claims description 3
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000003085 diluting agent Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 13
- 239000002105 nanoparticle Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000003487 anti-permeability effect Effects 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 2
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a nano modified epoxy heavy-duty anticorrosive paint which comprises the following components in parts by mass (8-10): 1 a component and a b component; the component A comprises the following raw materials in parts by mass: 35-50 parts of epoxy resin, 2-10 parts of modified nano material, 5-20 parts of modified flake aggregate, 6-10 parts of mixed solvent, 5-15 parts of silane coupling agent, 2-8 parts of antirust agent, 1-5 parts of auxiliary agent, 5-10 parts of filler and 3-12 parts of pigment; the component B comprises the following raw materials in parts by mass: 15-30 parts of polyamide epoxy curing agent, 10-15 parts of cashew nut oil modified epoxy curing agent and 35-50 parts of mixed solvent. The invention can effectively improve the compactness of the coating material, enhance the corrosion resistance of the coating and improve the durability of the coating.
Description
Technical Field
The application relates to the technical field of anticorrosive coatings, in particular to a nano modified epoxy heavy-duty anticorrosive coating.
Background
Metal materials have high strength, uniformity, and designability, and thus have been widely used in various fields. However, the metal material is difficult to avoid contacting with the external environment during the use process, so the metal material is easily corroded by the external corrosive medium, thereby the durability of the structure is reduced, the service life is shortened, and unnecessary economic loss is caused.
At present, the common method for the anticorrosion treatment of metal is to coat a layer of coating on the surface of the metal to isolate the surface of the metal from the external corrosive medium, and the main principle of the anticorrosion by using the coating is to isolate the medium from the substrate.
However, the coatings used in the prior art typically have voids. One of the pores is a structural pore whose size is related to the molecular structure of the coating film-forming material, typically 10-5To 10-7The range of cm; another type of pore is a pinhole formed by volatilization of the solution during the coating process, and the pore is large and is about 10-2To 10-4cm range. Since the diameter of the medium (e.g., small molecules such as water, acids, bases, etc.) is generally smaller than the structural porosity of the coating, these media can easily pass through the coating film, causing structural corrosion.
Disclosure of Invention
In view of the above, the invention provides a nano modified epoxy heavy-duty anticorrosive coating, which can effectively improve the compactness of a coating material, enhance the corrosion resistance of the coating and improve the durability of the coating.
The technical scheme of the invention is realized as follows:
a nano modified epoxy heavy-duty anticorrosive paint comprises the following components in parts by mass (8-10): 1 a component and a b component;
the component A comprises the following raw materials in parts by mass:
35-50 parts of epoxy resin, 2-10 parts of modified nano material, 5-20 parts of modified flake aggregate, 6-10 parts of mixed solvent, 5-15 parts of silane coupling agent, 2-8 parts of antirust agent, 1-5 parts of auxiliary agent, 5-10 parts of filler and 3-12 parts of pigment;
the component B comprises the following raw materials in parts by mass:
15-30 parts of polyamide epoxy curing agent, 10-15 parts of cashew nut oil modified epoxy curing agent and 35-50 parts of mixed solvent.
Preferably, the epoxy resin is bisphenol A epoxy resin.
Preferably, the modified nanomaterial comprises: nano silicon dioxide and nano aluminum oxide;
the mass ratio of the nano silicon dioxide to the nano aluminum oxide is 1: 1.
Preferably, the modified flake aggregate is a modified basalt flake;
the modified basalt flakes are 200-500 meshes, and the thickness of the modified basalt flakes is 1-3 mu m.
Preferably, the mixed solvent in the component A is epoxy paint thinner;
the epoxy paint diluent comprises: butanol and xylene;
the mass ratio of the butanol to the xylene is 3: 7.
Preferably, the silane coupling agent is any one of gamma-aminopropyltriethoxysilane, gamma- (2, 3-glycidoxy) propyltrimethoxysilane or gamma- (methacryloyloxy) propyltrimethoxysilane;
the antirust agent is one or more of phthalate, aluminum tripolyphosphate or zinc tripolyphosphate.
Preferably, the auxiliary agent is a mixture of 904S wetting dispersant and 606 antifoaming agent;
wherein the mass ratio of the dispersing agent to the defoaming agent is 5: 4.
preferably, the filler is a mixture of 1250-mesh talcum powder and calcium carbonate; the weight ratio of the 1250-mesh talcum powder to the calcium carbonate is 8: 6;
the pigment is any one of rutile titanium dioxide, iron oxide red, carbon black, phthalocyanine blue, phthalocyanine green or mica iron ash.
Preferably, the mixed solvent in the component B comprises: xylene and butanol;
the mass ratio of the xylene to the butanol is (1-3): 2.
preferably, the polyamide epoxy curing agent is 650 polyamide epoxy curing agent;
the cashew nut oil modified epoxy curing agent is 8235 cashew nut oil modified epoxy curing agent.
As can be seen from the above, in the nano modified epoxy heavy anti-corrosive paint of the present invention, the nano modified scale aggregate (for example, modified basalt scale) of micron and millimeter level, the modified nano material and the epoxy resin are prepared into the nano modified epoxy heavy anti-corrosive paint according to a certain proportion, so that a continuous and compact coating can be formed, the paint can be in close contact with a metal substrate, the bonding force between the modified nano particles in the paint and the epoxy base material is strong, a compact nano network structure can be formed, and the penetration of corrosive media can be effectively resisted. In addition, the labyrinth effect of the modified flake aggregate (such as the modified basalt flake) in the coating can also effectively reduce the corrosion speed of a corrosion medium; the nano particles can be filled in the gaps or the capillary holes of the coating, so that the anti-permeability of the coating can be further improved, and the coating has a strong shielding effect.
Detailed Description
In order to make the technical solution and advantages of the present invention more apparent, the present invention is described in further detail with reference to the following embodiments.
The embodiment of the invention provides a nano modified epoxy heavy-duty anticorrosive paint which comprises the following components in parts by mass (8-10): 1 a component and a b component;
the component A comprises the following raw materials in parts by mass:
35-50 parts of epoxy resin, 2-10 parts of modified nano material, 5-20 parts of modified flake aggregate, 6-10 parts of mixed solvent, 5-15 parts of silane coupling agent, 2-8 parts of antirust agent, 1-5 parts of auxiliary agent, 5-10 parts of filler and 3-12 parts of pigment;
the component B comprises the following raw materials in parts by mass:
15-30 parts of polyamide epoxy curing agent, 10-15 parts of cashew nut oil modified epoxy curing agent and 35-50 parts of mixed solvent.
In the technical scheme of the invention, the epoxy resin coating has high mechanical strength and cohesive force, particularly strong adhesive force to metal, good chemical resistance and oil resistance, particularly good acid and alkali resistance, and the like, and is easy to process and modify. However, epoxy resins can also be modified in general due to their brittle nature.
Additionally, by way of example, in a preferred embodiment of the present invention, the epoxy resin may be a bisphenol a epoxy resin.
In addition, the nano-scale particles have obvious improvement effect on various performances of the epoxy resin. The nano-scale particles have strong bonding effect with a matrix interface, the coating is favorable for stress transfer when stressed due to the small-size effect of the nano-scale particles, and the coating has extremely strong activity due to the serious insufficient coordination on the surface of the nano-material, so that the cross-linking reaction of epoxy resin can be further promoted, the intermolecular bonding force is improved, and meanwhile, the coating becomes more compact and the wear resistance is also greatly improved. In addition, the micron particles have larger particle size and can block the movement of a high molecular chain segment in the composite coating, so that the impact resistance of the coating is influenced, and the epoxy group and the nano particles on the interface generate a force far greater than the action force of Van der Waals force, so that a very ideal interface is formed, and the functions of well initiating microcracks and absorbing energy can be achieved. Therefore, the organic coating anticorrosive material is modified by utilizing the nanotechnology, so that the comprehensive performance of the organic coating anticorrosive material can be effectively improved, particularly the mechanical strength, hardness and adhesive force of the material are increased, and the light resistance, aging resistance, weather resistance and the like are improved.
In addition, as an example, in a preferred embodiment of the present invention, the modified nanomaterial may include: nano silicon dioxide and nano aluminum oxide; the mass ratio of the nano silicon dioxide to the nano aluminum oxide is 1: 1.
Nano SiO2The particles have a three-dimensional network structure, and due to the characteristics of serious coordination deficiency on the surface, huge specific surface area, surface oxygen deficiency and the like, the particles show extremely strong activity, are easy to combine with oxygen of epoxy cyclic molecules, improve the bonding force among the molecules, and greatly improve the strength, toughness, ductility, corrosion resistance and other properties of the epoxy resin coating. Nano Al2O3Also contains a three-dimensional cross-linked network and has the advantages of high hardness, high strength, good thermal stability, wear resistance, corrosion resistance and the like. Therefore, after the nano particles are added into the epoxy resin coating, the nano particles can be bonded with functional groups of epoxy by secondary chemical bonds, and the film-forming substance and the nano particles are reinforcedThe binding force of the filler reduces the capillary action of the coating to improve the shielding performance of the coating, thereby increasing the hardness and impact resistance of the coating and improving the scratch resistance and impact resistance of the coating.
In addition, in the technical scheme of the invention, the scale refers to a thin slice with certain particle size and thickness formed after metal and certain inorganic compounds are treated by a physical or chemical method. Common scales are: glass flakes, mica iron oxide flakes, graphite flakes, zinc-aluminum alloy flakes, stainless steel flakes, and basalt flakes. The scale aggregate, the high-performance corrosion-resistant resin and the corresponding auxiliary agent are added into the anticorrosive paint, so that various heavy anticorrosive paints can be prepared. The scale coating is of a multilayer sheet structure, can form a parallel superposed staggered thick film to generate a special labyrinth effect, not only can divide the coating into a plurality of small spaces to reduce the shrinkage stress and the expansion coefficient of the coating, but also can force the medium to roundly infiltrate, thereby delaying the route and the time of the corrosion medium diffusing and invading the matrix, having excellent permeability resistance, impact resistance, wear resistance and corrosion resistance, and effectively prolonging the service life of the coating.
In addition, the basalt has wide sources and low cost, and belongs to a resource-saving, green and environment-friendly material. Wherein, the basalt flakes have excellent medium penetration resistance. Thus, the addition of modified basalt flakes to the coating can create a special "labyrinth effect". The binding strength of the basalt scales with metal and concrete is high, the working temperature range is 200 ℃ below zero at the lowest, and can reach 1000 ℃ at the highest, and the basalt scales can adapt to working environments with large temperature difference and poor environmental conditions. In addition, compared with the glass flakes, the basalt flakes have high contents of iron oxide, titanium dioxide, aluminum oxide and calcium oxide, which are respectively 15.0%, 1.4%, 16.0% and 9.5%, and the basalt flakes have relatively few alkali oxides, such as 50% of silicon dioxide; the glass flakes do not contain iron oxide and titanium oxide, the content of aluminum oxide is 2%, the content of calcium oxide is 7%, and the content of silicon dioxide exceeds 50%. Therefore, the basalt flakes have better acid and alkali resistance, weather resistance and wear resistance than glass flakes, and can well make up for the defects that the epoxy coating has insufficient hardness and toughness and is easy to crack under the action of thermal stress or impact.
Thus, by way of example, in one preferred embodiment of the invention, the modified flake aggregate may be a modified basalt flake.
In addition, as an example, in a preferred embodiment of the present invention, the modified basalt flakes have a mesh size of 200 to 500 mesh and a thickness of 1 to 3 μm.
Although the nano material and the scale are different in size grade, both can increase the strength and the compactness of the coating and enhance the shielding effect of the coating. Therefore, in the technical scheme of the invention, aiming at the improvement effect of the scales and the nano materials on the coating structure on different scales, the modified nano materials and the modified basalt scales are simultaneously doped into the epoxy resin, so that the compactness of the coating material can be effectively improved, the corrosion resistance of the coating is enhanced, and the durability of the coating is improved.
In addition, as an example, in a preferred embodiment of the present invention, the mixed solvent in the component a may be an epoxy paint thinner; the epoxy paint thinner may include: butanol and xylene, wherein the mass ratio of the butanol to the xylene is 3: 7.
In addition, as an example, in a preferred embodiment of the present invention, the silane coupling agent may be any one of γ -aminopropyltriethoxysilane, γ - (2, 3-glycidoxy) propyltrimethoxysilane, or γ - (methacryloyloxy) propyltrimethoxysilane.
In addition, as an example, in a preferred embodiment of the present invention, the rust inhibitor may be one or more of phthalate, aluminum tripolyphosphate, or zinc tripolyphosphate.
Further, by way of example, in a preferred embodiment of the present invention, the adjuvant may be a mixture of 904S wetting dispersant and 606 defoamer; wherein the mass ratio of the dispersing agent to the defoaming agent is 5: 4.
in addition, as an example, in a preferred embodiment of the present invention, the filler may be a mixture of 1250 mesh talc and calcium carbonate; the weight ratio of 1250-mesh talcum powder to calcium carbonate is 8: 6.
In addition, as an example, in a preferred embodiment of the present invention, the pigment may be any one of rutile type titanium dioxide, red iron oxide, carbon black, phthalocyanine blue, phthalocyanine green, or mica iron dust.
In addition, as an example, in a preferred embodiment of the present invention, the mixed solvent in the component b may include: the xylene and the butanol are mixed according to the mass ratio of (1-3): 2.
further, by way of example, in a preferred embodiment of the present invention, the polyamide epoxy curing agent may be 650 polyamide epoxy curing agent.
Additionally, by way of example, in a preferred embodiment of the present invention, the cashew oil-modified epoxy curing agent can be 8235 cashew oil-modified epoxy curing agent.
In addition, in the technical scheme of the invention, the scale aggregate (such as basalt scale) and the nano material are both inorganic material fillers, have hydrophilic and oleophobic properties, are not enough in binding force in the organic coating, are difficult to uniformly disperse in an organic medium, easily cause section defects, and reduce the overall performance of the coating. For the nano material, even if the nano particles are dispersed in the coating by adopting a high-speed stirring method, the agglomeration phenomenon is still difficult to avoid. Therefore, before the scale aggregates (such as basalt scales) and the nano materials are stirred and mixed with other materials, the surfaces of the nano materials and the scale aggregates can be modified to obtain modified nano materials and modified scale aggregates.
Since the silane coupling agent has both a reactive group capable of chemically bonding to an organic material (e.g., a synthetic resin) and a reactive group capable of chemically bonding to an inorganic material (e.g., glass, silica sand, etc.) in the molecular formula, in the technical scheme of the present invention, the scale aggregate (e.g., basalt scale) and the nanomaterial may be subjected to a surface modification treatment using the silane coupling agent, so that the phenomenon of uneven dispersion of the nanomaterial and the scale aggregate in the coating material may be well improved.
Therefore, in the preparation method of the nano modified epoxy heavy-duty anticorrosive paint, the epoxy resin can be used as a matrix, the two-component paint is adopted, firstly, the scale aggregate (such as basalt scale), the nano material and the silane coupling agent are mixed together, and the scale aggregate and the nano material are subjected to modification treatment to obtain the modified scale aggregate and the modified nano material; mixing epoxy resin, a modified nano material, an antirust agent, an auxiliary agent, a pigment, a filler and modified flake aggregate in a mixed solvent to prepare a component A, and mixing a polyamide epoxy curing agent and a cashew nut oil modified epoxy curing agent in the mixed solvent to obtain a component B; and finally, mixing the component A and the component B according to the ratio of (8-10): 1, and fully stirring the mixture uniformly to obtain the nano modified epoxy heavy-duty anticorrosive paint.
In summary, in the technical scheme of the present invention, the nano modified epoxy heavy anti-corrosion coating is prepared from the micron-sized and millimeter-sized modified scale aggregates (e.g., modified basalt scales), the modified nano material and the epoxy resin according to a certain ratio, so that a continuous and compact coating can be formed, the coating can be in close contact with a metal substrate, the bonding force between the modified nano particles and the epoxy base material in the coating is strong, a compact nano network structure can be formed, and the penetration of corrosive media can be effectively resisted. In addition, the labyrinth effect of the modified flake aggregate (such as the modified basalt flake) in the coating can also effectively reduce the corrosion speed of a corrosion medium; the nano particles can be filled in the gaps or the capillary holes of the coating, so that the anti-permeability of the coating can be further improved, and the coating has a strong shielding effect.
Therefore, the nano modified epoxy heavy-duty anticorrosive coating provided by the invention has excellent corrosion resistance, and can be widely applied to the steel structure corrosion prevention fields of ocean engineering, petrochemical industry, metallurgical mining and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The nano modified epoxy heavy-duty anticorrosive paint is characterized by comprising the following components in parts by mass (8-10): 1 a component and a b component;
the component A comprises the following raw materials in parts by mass:
35-50 parts of epoxy resin, 2-10 parts of modified nano material, 5-20 parts of modified flake aggregate, 6-10 parts of mixed solvent, 5-15 parts of silane coupling agent, 2-8 parts of antirust agent, 1-5 parts of auxiliary agent, 5-10 parts of filler and 3-12 parts of pigment;
the component B comprises the following raw materials in parts by mass:
15-30 parts of polyamide epoxy curing agent, 10-15 parts of cashew nut oil modified epoxy curing agent and 35-50 parts of mixed solvent.
2. The nano-modified epoxy heavy-duty anticorrosive paint according to claim 1, characterized in that:
the epoxy resin is bisphenol A epoxy resin.
3. The nano-modified epoxy heavy anti-corrosion coating according to claim 1,
the modified nanomaterial comprises: nano silicon dioxide and nano aluminum oxide;
the mass ratio of the nano silicon dioxide to the nano aluminum oxide is 1: 1.
4. The nano-modified epoxy heavy-duty anticorrosive paint according to claim 1, characterized in that:
the modified flake aggregate is a modified basalt flake;
the modified basalt flakes are 200-500 meshes, and the thickness of the modified basalt flakes is 1-3 mu m.
5. The nano-modified epoxy heavy-duty anticorrosive paint according to claim 1, characterized in that:
the mixed solvent in the component A is epoxy paint thinner;
the epoxy paint diluent comprises: butanol and xylene;
the mass ratio of the butanol to the xylene is 3: 7.
6. The nano-modified epoxy heavy-duty anticorrosive paint according to claim 1, characterized in that:
the silane coupling agent is any one of gamma-aminopropyltriethoxysilane, gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane or gamma- (methacryloyloxy) propyltrimethoxysilane;
the antirust agent is one or more of phthalate, aluminum tripolyphosphate or zinc tripolyphosphate.
7. The nano-modified epoxy heavy-duty anticorrosive paint according to claim 1, characterized in that:
the auxiliary agent is a mixture of 904S wetting dispersant and 606 antifoaming agent;
wherein the mass ratio of the dispersing agent to the defoaming agent is 5: 4.
8. the nano-modified epoxy heavy-duty anticorrosive paint according to claim 1, characterized in that:
the filler is a mixture of 1250-mesh talcum powder and calcium carbonate; the weight ratio of the 1250-mesh talcum powder to the calcium carbonate is 8: 6;
the pigment is any one of rutile titanium dioxide, iron oxide red, carbon black, phthalocyanine blue, phthalocyanine green or mica iron ash.
9. The nano-modified epoxy heavy anti-corrosion coating according to claim 1,
the mixed solvent in the component B comprises: xylene and butanol;
the mass ratio of the xylene to the butanol is (1-3): 2.
10. the nano-modified epoxy heavy-duty anticorrosive paint according to claim 1, characterized in that:
the polyamide epoxy curing agent is 650 polyamide epoxy curing agents;
the cashew nut oil modified epoxy curing agent is 8235 cashew nut oil modified epoxy curing agent.
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| CN116622272A (en) * | 2023-05-25 | 2023-08-22 | 海南大学 | Modified basalt flake @ ZIF-8-epoxy resin composite coating and preparation method thereof |
| CN118256117A (en) * | 2024-05-27 | 2024-06-28 | 北京纽维逊建筑工程技术有限公司 | Colored iron tailing building coating and preparation method and application thereof |
| CN118906586A (en) * | 2024-07-19 | 2024-11-08 | 衢州壹沃科技有限公司 | Anticorrosion wear-resistant waterproof coiled material and preparation method thereof |
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Application publication date: 20200414 |