CN112876623B - Preparation method of ABS (acrylonitrile-butadiene-styrene) grafted latex and prepared ABS resin - Google Patents
Preparation method of ABS (acrylonitrile-butadiene-styrene) grafted latex and prepared ABS resin Download PDFInfo
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- CN112876623B CN112876623B CN202110059982.1A CN202110059982A CN112876623B CN 112876623 B CN112876623 B CN 112876623B CN 202110059982 A CN202110059982 A CN 202110059982A CN 112876623 B CN112876623 B CN 112876623B
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- latex
- sodium
- abs
- reaction kettle
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- 229920000126 latex Polymers 0.000 title claims abstract description 104
- 239000004816 latex Substances 0.000 title claims abstract description 103
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 title claims abstract description 85
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 title description 49
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 title description 49
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 66
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 62
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 52
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims description 79
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 54
- 239000000178 monomer Substances 0.000 claims description 43
- 238000004132 cross linking Methods 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 31
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 28
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000003995 emulsifying agent Substances 0.000 claims description 20
- 239000003999 initiator Substances 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 17
- 238000006116 polymerization reaction Methods 0.000 claims description 14
- 239000011787 zinc oxide Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- 239000012986 chain transfer agent Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 claims description 8
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 8
- 239000008139 complexing agent Substances 0.000 claims description 8
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 8
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 7
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 6
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 6
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 5
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 5
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Natural products OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 4
- CIWBSHSKHKDKBQ-DUZGATOHSA-N D-isoascorbic acid Chemical compound OC[C@@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-DUZGATOHSA-N 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 claims description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 4
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 claims description 4
- 235000010350 erythorbic acid Nutrition 0.000 claims description 4
- 239000001530 fumaric acid Substances 0.000 claims description 4
- 229940026239 isoascorbic acid Drugs 0.000 claims description 4
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 4
- 239000011976 maleic acid Substances 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 4
- 235000011181 potassium carbonates Nutrition 0.000 claims description 4
- 229940096992 potassium oleate Drugs 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
- MLICVSDCCDDWMD-KVVVOXFISA-M potassium;(z)-octadec-9-enoate Chemical compound [K+].CCCCCCCC\C=C/CCCCCCCC([O-])=O MLICVSDCCDDWMD-KVVVOXFISA-M 0.000 claims description 4
- FBCQUCJYYPMKRO-UHFFFAOYSA-N prop-2-enyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC=C FBCQUCJYYPMKRO-UHFFFAOYSA-N 0.000 claims description 4
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 3
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 claims description 3
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 3
- 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 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000012874 anionic emulsifier Substances 0.000 claims description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 3
- 239000011790 ferrous sulphate Substances 0.000 claims description 3
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 3
- 239000008103 glucose Substances 0.000 claims description 3
- 229960001031 glucose Drugs 0.000 claims description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 3
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 3
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 3
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 3
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 3
- 239000011736 potassium bicarbonate Substances 0.000 claims description 3
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 3
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 3
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 3
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 2
- GUBGYTABKSRVRQ-XLOQQCSPSA-N Alpha-Lactose Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@H](O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-XLOQQCSPSA-N 0.000 claims description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical compound NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 2
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- ZPOLOEWJWXZUSP-WAYWQWQTSA-N bis(prop-2-enyl) (z)-but-2-enedioate Chemical compound C=CCOC(=O)\C=C/C(=O)OCC=C ZPOLOEWJWXZUSP-WAYWQWQTSA-N 0.000 claims description 2
- YHAIUSTWZPMYGG-UHFFFAOYSA-L disodium;2,2-dioctyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCCCC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CCCCCCCC YHAIUSTWZPMYGG-UHFFFAOYSA-L 0.000 claims description 2
- 229960002089 ferrous chloride Drugs 0.000 claims description 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims description 2
- 239000008101 lactose Substances 0.000 claims description 2
- 229960001375 lactose Drugs 0.000 claims description 2
- 150000001451 organic peroxides Chemical class 0.000 claims description 2
- 150000002978 peroxides Chemical class 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 claims description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 2
- DZCAZXAJPZCSCU-UHFFFAOYSA-K sodium nitrilotriacetate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CC([O-])=O DZCAZXAJPZCSCU-UHFFFAOYSA-K 0.000 claims description 2
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 claims description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 2
- 238000010559 graft polymerization reaction Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 19
- 229920001971 elastomer Polymers 0.000 description 14
- 239000005060 rubber Substances 0.000 description 14
- 239000000843 powder Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 11
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000007334 copolymerization reaction Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000005345 coagulation Methods 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 150000003254 radicals Chemical group 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- CDOUZKKFHVEKRI-UHFFFAOYSA-N 3-bromo-n-[(prop-2-enoylamino)methyl]propanamide Chemical compound BrCCC(=O)NCNC(=O)C=C CDOUZKKFHVEKRI-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- -1 phosphate ester Chemical class 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 239000004318 erythorbic acid Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000037048 polymerization activity Effects 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229940079827 sodium hydrogen sulfite Drugs 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920001897 terpolymer 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
- C08F285/00—Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
-
- 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
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Graft Or Block Polymers (AREA)
Abstract
The invention discloses a preparation method of ABS graft latex, which comprises the steps of preparing polybutadiene latex, preparing polybutadiene latex with a cross-linked hydrophilic layer from the polybutadiene latex, and finally carrying out graft polymerization on the polybutadiene latex with the cross-linked hydrophilic layer, styrene and acrylonitrile to obtain the ABS graft latex. The ABS resin prepared by the ABS graft latex has high impact resistance which can reach more than 370J/m.
Description
Technical Field
The invention belongs to the field of macromolecules, and particularly relates to a preparation method of ABS graft latex and prepared ABS resin.
Background
ABS resin generally refers to a terpolymer of butadiene, styrene and acrylonitrile. The ABS resin has the characteristics of good chemical resistance, good impact resistance, easy processing and forming and the like, so that the ABS resin can be widely applied to various fields such as household appliances, automobiles and the like. At present, ABS resin in the industry is mostly prepared by adopting an emulsion grafting-SAN blending method. The method comprises three parts of preparation of dispersed phase ABS rubber powder, preparation of continuous phase SAN resin and mixing, extruding and granulating of the dispersed phase ABS rubber powder and the continuous phase SAN resin. The preparation process comprises the following steps: the ABS rubber powder is prepared by firstly carrying out emulsion polymerization on butadiene monomer to obtain polybutadiene latex, then grafting a copolymer of styrene and acrylonitrile on the polybutadiene latex to obtain ABS graft latex with a core-shell structure, and finally coagulating and drying the ABS graft latex to obtain the ABS rubber powder; the SAN resin is obtained by copolymerizing styrene and acrylonitrile according to a specified proportion by adopting a continuous bulk method; and (3) blending and extruding the ABS rubber powder and SAN resin to obtain the ABS resin.
As is known from the grafting methods described above, the grafting of styrene and acrylonitrile to polybutadiene latex is a free radical initiated copolymerization. The initiator free radical takes active hydrogen on the polybutadiene molecular chain or attacks the residual double bonds on the polybutadiene molecular chain to form polybutadiene long-chain free radical, and the free radical initiates the graft monomer (styrene and acrylonitrile) to carry out copolymerization reaction. In order to ensure that the ABS rubber powder serving as a dispersed phase has good compatibility with the SAN resin serving as a continuous phase matrix, the copolymerization ratio of styrene and acrylonitrile in the grafting process is required to be consistent with that of styrene and acrylonitrile in the SAN resin serving as the continuous phase as much as possible. However, in the grafting process, due to similar compatibility, styrene is more easily diffused into polybutadiene latex for internal grafting reaction than acrylonitrile, which can cause the content of styrene and acrylonitrile in the grafting reaction outside polybutadiene latex particles to be reduced, and because the polymerization activity of acrylonitrile monomer is lower than that of styrene, the enrichment of acrylonitrile monomer in the grafting reaction outside polybutadiene latex particles causes the copolymerization ratio of the styrene and acrylonitrile copolymer segments to deviate from the copolymerization ratio of the formula design, and the compatibility of the ABS rubber powder prepared by the ABS rubber powder and SAN resin in the blending extrusion process is reduced, so that the impact resistance of the prepared ABS resin is reduced.
In order to obtain ABS resins with high impact resistance, patent application CN109071916A discloses a process for the preparation of ABS graft copolymers. According to the method, the reactive phosphate ester emulsifier is added in the grafting process, and the ABS resin with good hue and high impact strength is obtained by utilizing the characteristic that the emulsifier can consume impurities such as metal ions in a system. However, the reactive phosphate ester emulsifier adopted by the method is expensive and is not beneficial to large-scale industrial production. Patent application CN108368210A discloses a thermoplastic resin and a method for preparing a thermoplastic resin composition. The patent teaches to reduce the particle size of the particles
And a small particle size>
The polybutadiene latex is mixed and grafted together, and the ABS resin with high impact resistance is obtained by utilizing the characteristics of large specific surface area and easy graft reaction of the latex with small particle size. The method needs to prepare two kinds of latex with different particle diameters respectively, and has the disadvantages of complicated production process and low production efficiency.
Therefore, it is required to develop a method for preparing an ABS graft latex for preparing a high impact ABS resin, which is suitable for industrialization.
Disclosure of Invention
The invention aims to provide a preparation method of ABS graft latex, and ABS resin prepared from the ABS graft latex has high impact resistance which can reach more than 370J/m, has high production efficiency, and is suitable for industrial application.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
a preparation method of ABS graft latex comprises the following steps: adding hydrophilic monomer and crosslinking with zinc oxide in the preparation process of polybutadiene latex, then cladding the obtained latex with weak hydrophilic monomer and crosslinking monomer to obtain polybutadiene latex with a crosslinking hydrophilic layer, and finally grafting styrene and acrylonitrile on the polybutadiene latex with the crosslinking hydrophilic layer to obtain the ABS grafted latex.
The ABS graft latex with a core-interlayer-shell structure can be obtained by the method of the invention:
modifying the core surface by hydrophilic crosslinking:
in the later stage of preparing polybutadiene latex by butadiene polymerization, adding a hydrophilic monomer, and then adding zinc oxide for crosslinking to obtain polybutadiene latex (core) with surface hydrophilic modification and zinc oxide crosslinking;
intermediate layer
Grafting and polymerizing a weak hydrophilic monomer and a crosslinking agent on the surface layer of the butadiene latex to further strengthen the hydrophilic crosslinking modification of the surface of the polybutadiene latex, so that monomers such as styrene and the like can be prevented from entering the interior of the polybutadiene latex;
normal grafting
And (3) grafting styrene and acrylonitrile on the modified polybutadiene latex to obtain the ABS grafted latex.
The added compact hydrophilic crosslinking layer can effectively prevent the diffusion of the grafting monomer into the polybutadiene rubber particles during the grafting of polybutadiene, so that the internal grafting is reduced, the external grafting rate is increased, and the compatibility of the polybutadiene rubber particles and the substrate SAN resin is enhanced; on the other hand, the hard monomer is grafted into the polybutadiene rubber, so that the rubber elasticity is not reduced; the ABS graft latex with good compatibility and high toughening efficiency can be obtained after the combination.
As a preferred embodiment, a method for preparing an ABS graft latex comprises the steps of:
1) Preparation of the polybutadiene latex: adding butadiene, an emulsifier, an electrolyte, a chain transfer agent, an initiator and water into a reaction kettle, uniformly stirring, heating the reaction kettle to a temperature of 55-85 ℃ preferably for polymerization, adding a hydrophilic monomer into the reaction kettle for continuous reaction when the butadiene conversion rate is 60-80%, cooling the reaction kettle to a temperature of 35-65 ℃ preferably when the butadiene conversion rate is 92-98%, adding zinc oxide into the reaction kettle, uniformly stirring, and maintaining the temperature preferably for 0.2-2 hours to obtain polybutadiene latex;
2) Preparation of a polybutadiene latex with a crosslinked hydrophilic layer: adding the polybutadiene latex, the weak hydrophilic monomer, the crosslinking monomer, the emulsifier, the reducing aid, the reducing agent, the complexing agent, the initiator and water into a reaction kettle, uniformly stirring, heating the reaction kettle to preferably 40-70 ℃ for reaction, and obtaining the polybutadiene latex with the crosslinking hydrophilic layer when the residual quantity of the weak hydrophilic monomer is less than or equal to 200 ppm;
3) Preparation of ABS graft latex: adding the polybutadiene latex with the crosslinking hydrophilic layer, styrene, acrylonitrile, an optional emulsifier, a chain transfer agent, a reducing agent, an initiator and water into a reaction kettle, uniformly stirring, heating the reaction kettle to preferably 70-90 ℃ to perform polymerization reaction, and obtaining the ABS grafted latex when the acrylonitrile content is less than or equal to 2000 ppm.
As a more preferred embodiment, a method for preparing an ABS graft latex comprises the steps of:
1) Preparation of the polybutadiene latex: according to parts by weight, 90-100 parts of butadiene, 1-8 parts of emulsifier, 0.1-3 parts of electrolyte, 0.1-3 parts of chain transfer agent, 0.1-1 part of initiator and 90-140 parts of water are put into a reaction kettle at one time, stirred uniformly and heated to 55-85 ℃ for polymerization reaction, when the conversion rate of the butadiene is 60-80%, 1-10 parts of hydrophilic monomer is added into the reaction kettle for continuous reaction, when the conversion rate of the butadiene is 92-98%, the reaction kettle is cooled to 35-65 ℃, then 0.1-5 parts of zinc oxide is added into the reaction kettle and stirred uniformly, and the temperature is kept for 0.2-2 hours to obtain the polybutadiene latex.
Preferably, 92-98 parts of butadiene, 2-6 parts of emulsifier, 0.5-2.5 parts of electrolyte, 0.2-2.5 parts of chain transfer agent, 0.2-0.9 part of initiator and 100-130 parts of water are put into a reaction kettle in one step, the mixture is uniformly stirred and heated to 60-80 ℃ for polymerization reaction, 2-8 parts of hydrophilic monomer is added into the reaction kettle for continuous reaction when the butadiene conversion rate is 65-75%, the reaction kettle is cooled to 40-60 ℃ when the butadiene conversion rate is 93-97%, then 0.5-4.5 parts of zinc oxide is added into the reaction kettle and uniformly stirred, and the temperature is kept for 0.5-1.5 hours to obtain the polybutadiene latex.
2) Preparation of a polybutadiene latex with a crosslinked hydrophilic layer: according to the weight portion, 50-90 portions (calculated by solid portion) of polybutadiene latex, 5-20 portions of weak hydrophilic monomer, 1-5 portions of crosslinking monomer, 1-5 portions of emulsifier, 0.001-0.010 portion of auxiliary reducing agent, 0.1-1.0 portion of reducing agent, 0.01-0.1 portion of complexing agent, 0.1-1.0 portion of initiator and 100-150 portions of water are added into a reaction kettle and stirred uniformly, the reaction kettle is heated to 40-70 ℃ for reaction, and when the residual quantity of the weak hydrophilic monomer is less than or equal to 200ppm, the polybutadiene latex with a crosslinking hydrophilic layer is obtained.
Preferably, 60-80 parts (by weight parts) of polybutadiene latex, 6-18 parts of weak hydrophilic monomer, 1.5-4.5 parts of crosslinking monomer, 2-4 parts of emulsifier, 0.002-0.009 part of auxiliary reducing agent, 0.2-0.9 part of reducing agent, 0.02-0.09 part of complexing agent, 0.2-0.9 part of initiator and 110-140 parts of water are added into a reaction kettle and uniformly stirred, the reaction kettle is heated to 45-65 ℃ for reaction, and the polybutadiene latex with the crosslinking hydrophilic layer is obtained when the residual quantity of the weak hydrophilic monomer is less than or equal to 180 ppm.
3) Preparation of ABS graft latex: adding 100-120 parts (by solid parts) of polybutadiene latex with a crosslinking hydrophilic layer, 25-35 parts of styrene, 5-15 parts of acrylonitrile, 0-5 parts of emulsifier, 0.1-3 parts of chain transfer agent, 0.1-1 part of reducing agent, 0.1-1.0 part of initiator and 140-160 parts of water into a reaction kettle, uniformly stirring, heating the reaction kettle to 70-90 ℃ for polymerization reaction, and obtaining the ABS grafted latex when the content of acrylonitrile is less than or equal to 2000 ppm.
Preferably, 105-115 parts (calculated by solid parts) of the polybutadiene latex with the crosslinking hydrophilic layer, 28-32 parts of styrene, 8-12 parts of acrylonitrile, 1-4 parts of emulsifier, 0.2-2.5 parts of chain transfer agent, 0.2-0.8 part of reducing agent, 0.2-0.8 part of initiator and 145-155 parts of water are added into a reaction kettle and uniformly stirred, the reaction kettle is heated to 75-85 ℃ for polymerization reaction, and the ABS graft latex is obtained when the content of acrylonitrile is less than or equal to 1800 ppm.
In the invention, the hydrophilic monomer is one or more of acrylic acid, methacrylic acid, itaconic acid, maleic acid and fumaric acid, and acrylic acid is preferred.
In the present invention, the weakly hydrophilic monomer has a solubility in 100 parts by weight of water at 20 ℃ of 1.5 to 7.5 parts by weight, and is preferably one or more of ethyl acrylate, methyl methacrylate, acrylonitrile, methyl acrylate, and vinyl acetate.
In the present invention, the crosslinking monomer is one or two of allyl methacrylate and diallyl maleate, and allyl methacrylate is preferred.
In the invention, the emulsifier is an anionic emulsifier, preferably one or more of sodium dodecyl sulfate, potassium oleate, disproportionated potassium rosinate, sodium dodecyl benzene sulfonate and dioctyl sodium sulfosuccinate.
In the present invention, the chain transfer agent is one or two of n-dodecyl mercaptan and t-dodecyl mercaptan, and t-dodecyl mercaptan is preferred.
In the present invention, the initiator is selected from one or more of inorganic peroxides and organic peroxides, preferably one or more of potassium persulfate, sodium persulfate, ammonium persulfate, dicumyl peroxide and cumene hydroperoxide.
In the invention, the electrolyte is one or more of sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate and sodium tripolyphosphate, and potassium carbonate is preferred.
In the invention, the complexing agent is aminocarboxylate or phosphate, preferably one or more of trisodium nitrilotriacetate, disodium ethylene diamine tetraacetate, tetrasodium ethylene diamine tetraacetate, sodium pyrophosphate and sodium hexametaphosphate, and more preferably sodium pyrophosphate.
In the invention, the auxiliary reducing agent is one or more of ferrous sulfate, ferrous chloride and sodium bisulfite, and ferrous sulfate is preferred.
In the invention, the reducing agent is one or more of sodium hydrosulfite, sodium formaldehyde sulfoxylate, isoascorbic acid, glucose and lactose, and glucose is preferred.
An ABS resin is prepared from the ABS graft latex. The preparation of ABS resins from ABS graft latices is conventional in the art. The specific operation of obtaining the ABS rubber powder from the ABS graft latex through coagulation, filtration, dehydration and drying can refer to pages 37-38 of the book "ABS resin production practice and application" written by Songzhou and the like, and the specific operation of obtaining the ABS resin through blending, extrusion and granulation of the ABS rubber powder and SAN resin can refer to pages 68-74 of the book.
The invention has the positive effects that:
the method comprises the steps of adding a hydrophilic monomer in the process of preparing polybutadiene latex, crosslinking by using zinc oxide, jacketing the obtained latex by using a weak hydrophilic monomer and a crosslinking monomer to obtain the polybutadiene latex with a crosslinking hydrophilic layer, and finally grafting styrene and acrylonitrile onto the polybutadiene latex with the crosslinking hydrophilic layer to obtain the ABS grafted latex. When styrene and acrylonitrile are subjected to graft polymerization on polybutadiene latex with a crosslinking hydrophilic layer, the existence of the crosslinking hydrophilic layer can effectively prevent styrene from diffusing into polybutadiene latex particles, so that styrene and acrylonitrile monomers outside the polybutadiene latex particles can be copolymerized according to a copolymerization ratio designed by a formula, and the compatibility of ABS rubber powder prepared from the ABS graft latex and SAN resin in the blending and extruding process is improved. The ABS resin prepared by the ABS graft latex has high impact resistance which can reach more than 370J/m.
Detailed Description
In order to better understand the technical solution of the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
The raw material sources in the following examples and comparative examples of the present invention were obtained commercially, unless otherwise specified.
The following methods were used to test the butadiene conversion in the following examples and comparative examples of the present invention: taking 0.05g of sample into a 20ml headspace bottle, diluting the sample to 1.00g by using DMF, carrying out sample analysis by using a gas chromatograph, and testing to obtain the content of the residual butadiene monomer.
The test of the residual amount of the weakly hydrophilic monomer or acrylonitrile in the latex in the following examples and comparative examples of the present invention employs the method provided by national standard GB/T20623-2006.
The impact resistance of the ABS resin in the following examples and comparative examples of the present invention was measured by the method provided in ASTM D256 for notched Izod impact strength of ABS resin at 23 ℃.
Example 1
Preparation of the polybutadiene latex: adding 90g of butadiene, 1g of sodium dodecyl sulfate, 0.1g of sodium tripolyphosphate, 1g of n-dodecyl mercaptan, 2g of tert-dodecyl mercaptan, 0.2g of sodium persulfate and 140g of water into a reaction kettle, uniformly stirring, heating the reaction kettle to 55 ℃ for polymerization reaction, adding 1g of acrylic acid, 3g of methacrylic acid, 2g of maleic acid and 4g of fumaric acid into the reaction kettle when the conversion rate of butadiene is 60.3%, continuously reacting, cooling the reaction kettle to 35 ℃ when the conversion rate of butadiene is 94.9%, adding 5g of zinc oxide into the reaction kettle, uniformly stirring, and preserving heat for 2 hours to obtain latex polybutadiene.
Examples 2 to 5
The differences between examples 2-5 and example 1 are shown in Table 1, and the remaining raw materials, experimental conditions and reaction steps are the same as those of example 1.
TABLE 1 differences between examples 2-5 and example 1
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Butadiene polymerization temperature (. Degree. C.) | 55 | 85 | 60 | 70 | 80 |
| Butadiene (g) | 90 | 98 | 92 | 100 | 95 |
| Sodium dodecyl sulfate (g) | 1.00 | 1.00 | 1.00 | ||
| Potassium oleate (g) | 3.00 | 2.00 | 2.00 | ||
| Disproportionated rosin potassium salt (g) | 1.00 | 1.00 | 2.00 | ||
| Sodium dodecyl benzene sulfonate (g) | 2.00 | 2.00 | |||
| Dioctyl sodium sulfosuccinate (g) | 1.00 | 2.00 | |||
| Sodium carbonate (g) | 1.00 | 1.00 | 0.50 | ||
| Potassium carbonate (g) | 1.00 | ||||
| Sodium bicarbonate (g) | 2.00 | ||||
| Potassium bicarbonate (g) | 1.00 | 0.60 | |||
| Sodium tripolyphosphate (g) | 0.10 | 0.50 | |||
| Potassium persulfate (g) | 0.10 | 0.55 | 0.55 | ||
| Dicumyl peroxide (g) | 0.10 | ||||
| Sodium persulfate (g) | 0.20 | 0.30 | |||
| Cumene hydroperoxide (g) | 0.10 | ||||
| Ammonium persulfate (g) | 0.35 | 0.50 | |||
| N-dodecyl mercaptan (g) | 1.00 | 0.10 | 1.50 | 0.20 | |
| Tert-dodecyl mercaptan (g) | 2.00 | 1.00 | 1.40 | ||
| Water (g) | 140 | 130 | 90 | 100 | 120 |
| Butadiene conversion at hydrophilic monomer insertion (%) | 60.3％ | 80％ | 75.2％ | 65.3％ | 69.8％ |
| Acrylic acid (g) | 1.00 | 2.00 | 0.50 | 4.00 | |
| Methacrylic acid (g) | 3.00 | 1.00 | 2.00 | ||
| Itaconic acid (g) | 2.00 | 0.50 | |||
| Maleic acid (g) | 2.00 | 3.00 | |||
| Fumaric acid (g) | 4.00 | 1.00 | 1.00 | ||
| Butadiene conversion (g) upon insertion of zinc oxide | 94.9％ | 94.1％ | 96.1％ | 97.2％ | 93.1％ |
| Zinc oxide (g) | 5.00 | 0.10 | 4.50 | 0.50 | 2.90 |
| Crosslinking temperature (. Degree. C.) of zinc oxide | 35 | 65 | 40 | 60 | 50 |
| Zinc oxide crosslinking time (h) | 2 | 0.2 | 1.5 | 0.5 | 1 |
Example 6
Preparation of a polybutadiene latex with a crosslinked hydrophilic layer: in parts by weight, 90g of the polybutadiene latex prepared in example 1 (in terms of solid), 8g of ethyl acrylate, 5g of methyl methacrylate, 5g of methyl acrylate, 1.5g of allyl methacrylate, 1g of sodium lauryl sulfate, 2g of potassium oleate, 2g of sodium dioctylsulfosuccinate, 0.001g of sodium hydrogen sulfite, 0.1g of sodium formaldehyde sulfoxylate, 0.01g of disodium ethylenediaminetetraacetate, 0.4g of dicumyl peroxide, 0.1g of potassium persulfate, 0.1g of sodium persulfate, 0.3g of ammonium persulfate and 140g of water were charged into a reaction vessel and stirred uniformly, the reaction vessel was heated to 40 ℃ to effect a reaction, and when the weakly hydrophilic monomer remaining amount was 182ppm, the reaction was stopped to obtain a polybutadiene latex having a crosslinked hydrophilic layer.
Examples 7 to 10
The differences between examples 7-10 and example 6 are shown in Table 2, and the remaining raw materials, experimental conditions and reaction steps are the same as those of example 6.
Table 2 examples 7-10 differences from example 6
Example 11
Preparation of ABS graft latex: 120g of the polybutadiene latex having a crosslinked hydrophilic layer prepared in example 6 (in terms of solid content), 25g of styrene, 15g of acrylonitrile, 0.1g of t-dodecylmercaptan, 0.1g of erythorbic acid, 0.1g of dicumyl peroxide and 155g of water were charged into a reaction vessel and stirred uniformly, and the reaction vessel was heated to 75 ℃ to conduct polymerization reaction, and when the acrylonitrile content was 1803ppm, the ABS graft latex was obtained.
Examples 12 to 15
The differences between examples 12-15 and example 11 are shown in Table 3, and the remaining raw materials, experimental conditions and reaction procedures were the same as those of example 11.
Table 3 examples 12-15 differences from example 11
Comparative example 1
1) Preparation of the polybutadiene latex:
adding 90g of butadiene, 1g of sodium dodecyl sulfate, 0.1g of sodium tripolyphosphate, 1g of n-dodecyl mercaptan, 2g of tert-dodecyl mercaptan, 0.2g of sodium persulfate and 140g of water into a reaction kettle, uniformly stirring, heating the reaction kettle to 55 ℃ for polymerization, and stopping the reaction when the conversion rate of butadiene is 95.3% to obtain the polybutadiene latex.
2) Preparation of ABS graft latex:
adding 120g of polybutadiene latex (calculated by solid parts) prepared in the step 1), 25g of styrene, 15g of acrylonitrile, 0.1g of tert-dodecyl mercaptan, 0.1g of isoascorbic acid, 0.1g of dicumyl peroxide and 155g of water into a reaction kettle, uniformly stirring, heating the reaction kettle to 75 ℃ for polymerization reaction, and obtaining the ABS graft latex when the content of acrylonitrile is 1821 ppm.
The invention prepares ABS resin from ABS graft latex according to the following method and tests the shock resistance:
1) 200g of the ABS graft latex prepared in examples 11 to 15 and comparative examples were weighed and added to a coagulation kettle, 2g of a 1.5% aqueous solution of sulfuric acid was added to the coagulation kettle, the coagulation kettle was heated to 90 ℃ and aged for 2 hours, the contents of the coagulation kettle were cooled to room temperature, filtered, dehydrated and dried to a water content of not more than 1%, and ABS rubber powder was obtained.
2) SA 30 of LG company is taken as a SAN resin continuous phase, ABS rubber powder prepared in the step 1) is taken as a disperse phase, and the ABS resin is obtained by mixing, extruding and granulating, wherein the polybutadiene rubber content in the prepared ABS resin is set to be 17 percent.
3) Preparing test sample strips from the ABS resin obtained in the step 2 on an injection molding machine at 180 ℃, and testing the notched izod impact strength of the ABS resin at 23 ℃ according to the ASTM D256 standard, wherein the specific results are shown in Table 4.
TABLE 4 mechanical Property testing
As can be seen from the results of the tests of examples 11 to 15 and the comparative example, the ABS resin obtained using the ABS graft latex prepared according to the present invention has higher impact resistance.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The preparation method of the ABS graft latex is characterized by comprising the following steps:
1) Preparation of the polybutadiene latex: adding butadiene, an emulsifier, an electrolyte, a chain transfer agent, an initiator and water into a reaction kettle, uniformly stirring, heating the reaction kettle to 55-85 ℃ for polymerization, adding a hydrophilic monomer into the reaction kettle for continuous reaction when the butadiene conversion rate is 60-80%, cooling the reaction kettle to 35-65 ℃ when the butadiene conversion rate is 92-98%, adding zinc oxide into the reaction kettle, uniformly stirring, and keeping the temperature for 0.2-2 hours to obtain polybutadiene latex;
2) Preparation of a polybutadiene latex with a crosslinked hydrophilic layer: adding the polybutadiene latex, the weak hydrophilic monomer, the crosslinking monomer, the emulsifier, the reducing agent, the complexing agent, the initiator and water into a reaction kettle, uniformly stirring, heating the reaction kettle to 40-70 ℃ for reaction, and obtaining the polybutadiene latex with the crosslinking hydrophilic layer when the residual quantity of the weak hydrophilic monomer is less than or equal to 200 ppm;
3) Preparation of ABS graft latex: adding the polybutadiene latex with the crosslinking hydrophilic layer, styrene, acrylonitrile, an optional emulsifier, a chain transfer agent, a reducing agent, an initiator and water into a reaction kettle, uniformly stirring, heating the reaction kettle to 70-90 ℃ for polymerization reaction, and obtaining the ABS grafted latex when the acrylonitrile content is less than or equal to 2000 ppm; the dosage of each component in the step 1) is as follows: 90-100 parts of butadiene, 1-8 parts of emulsifier, 0.1-3 parts of electrolyte, 0.1-3 parts of chain transfer agent, 0.1-1 part of initiator, 90-140 parts of water, 1-10 parts of hydrophilic monomer and 0.1-5 parts of zinc oxide, by weight; the dosage of each component in the step 2) is as follows: 50-90 parts of polybutadiene latex, 5-20 parts of weak hydrophilic monomer, 1-5 parts of crosslinking monomer, 1-5 parts of emulsifier, 0.001-0.010 part of auxiliary reducing agent, 0.1-1.0 part of reducing agent, 0.01-0.1 part of complexing agent, 0.1-1.0 part of initiator and 100-150 parts of water in parts by weight; the weakly hydrophilic monomer in step 2) is a monomer having a solubility of 1.5 to 7.5 parts by weight in 100 parts by weight of water at 20 ℃.
2. The preparation method according to claim 1, wherein the amount of each component in step 3) is: 100-120 parts of polybutadiene latex with a crosslinking hydrophilic layer, 25-35 parts of styrene, 5-15 parts of acrylonitrile, 0-5 parts of emulsifier, 0.1-3 parts of chain transfer agent, 0.1-1 part of reducing agent, 0.1-1.0 part of initiator and 140-160 parts of water in parts by weight.
3. The method according to claim 1, wherein the hydrophilic monomer in step 1) is one or more of acrylic acid, methacrylic acid, itaconic acid, maleic acid, and fumaric acid.
4. The method according to any one of claims 1 to 3, wherein the electrolyte in step 1) is one or more of sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium tripolyphosphate; and/or the chain transfer agent in the steps 1) and 3) is one or two of n-dodecyl mercaptan and tert-dodecyl mercaptan.
5. The method according to any one of claims 1 to 3, wherein the weakly hydrophilic monomer in step 2) is one or more of ethyl acrylate, methyl methacrylate, acrylonitrile, methyl acrylate, and vinyl acetate.
6. The production method according to any one of claims 1 to 3, wherein the crosslinking monomer in step 2) is one or both of allyl methacrylate and diallyl maleate; and/or the presence of a gas in the gas,
the complexing agent is one or more of aminocarboxylate and phosphate; and/or the presence of a gas in the gas,
the auxiliary reducing agent is one or more of ferrous sulfate, ferrous chloride and sodium bisulfite; and/or the presence of a gas in the gas,
the reducing agent in the steps 2) and 3) is one or more of sodium hydrosulfite, sodium formaldehyde sulfoxylate, isoascorbic acid, glucose and lactose.
7. The method of claim 6, wherein the complexing agent is one or more of trisodium nitrilotriacetate, disodium ethylenediaminetetraacetate, tetrasodium ethylenediaminetetraacetate, sodium pyrophosphate, and sodium hexametaphosphate.
8. The method according to any one of claims 1 to 3, wherein the emulsifier in steps 1) to 3) is an anionic emulsifier; and/or the initiator is selected from one or more of inorganic peroxides and organic peroxides.
9. The method of claim 8, wherein the anionic emulsifier is one or more of sodium dodecyl sulfate, potassium oleate, potassium disproportionate rosin, sodium dodecyl benzene sulfonate, and sodium dioctyl sulfosuccinate; and/or the initiator is one or more of potassium persulfate, sodium persulfate, ammonium persulfate, dicumyl peroxide and cumene hydroperoxide.
10. An ABS resin, characterized by being prepared from the ABS graft latex prepared by the preparation method of any one of claims 1 to 9.
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