CN112538140A - Modified styrene-acrylic emulsion and preparation method thereof - Google Patents
Modified styrene-acrylic emulsion and preparation method thereof Download PDFInfo
- Publication number
- CN112538140A CN112538140A CN202011036919.8A CN202011036919A CN112538140A CN 112538140 A CN112538140 A CN 112538140A CN 202011036919 A CN202011036919 A CN 202011036919A CN 112538140 A CN112538140 A CN 112538140A
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- CN
- China
- Prior art keywords
- parts
- acrylic emulsion
- modified styrene
- styrene
- emulsifier
- Prior art date
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- Pending
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- 239000000839 emulsion Substances 0.000 title claims abstract description 99
- 229920001909 styrene-acrylic polymer Polymers 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 238000004945 emulsification Methods 0.000 title description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 39
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 39
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 34
- 239000010702 perfluoropolyether Substances 0.000 claims abstract description 31
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 30
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims abstract description 22
- 239000003999 initiator Substances 0.000 claims abstract description 18
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 12
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000009471 action Effects 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 239000008367 deionised water Substances 0.000 claims description 14
- 229910021641 deionized water Inorganic materials 0.000 claims description 14
- -1 sorbitan fatty acid ester Chemical class 0.000 claims description 11
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 8
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-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
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 6
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 claims description 5
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 claims description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical group COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 5
- 229920001213 Polysorbate 20 Polymers 0.000 claims description 5
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- 230000001804 emulsifying effect Effects 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 5
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 5
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 claims description 5
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 claims description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 4
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 3
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 3
- UUORTJUPDJJXST-UHFFFAOYSA-N n-(2-hydroxyethyl)prop-2-enamide Chemical group OCCNC(=O)C=C UUORTJUPDJJXST-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
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical group NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 2
- APJBXIMFEOFYMS-UHFFFAOYSA-N 2-methylpropan-1-amine;dihydrochloride Chemical compound Cl.Cl.CC(C)CN APJBXIMFEOFYMS-UHFFFAOYSA-N 0.000 claims description 2
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 19
- 230000007797 corrosion Effects 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 5
- 229930006000 Sucrose Natural products 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000005720 sucrose Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910003472 fullerene Inorganic materials 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002096 quantum dot Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 238000009210 therapy by ultrasound Methods 0.000 description 3
- 229940087291 tridecyl alcohol Drugs 0.000 description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- BWYYYTVSBPRQCN-UHFFFAOYSA-M sodium;ethenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C=C BWYYYTVSBPRQCN-UHFFFAOYSA-M 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- LCPUCXXYIYXLJY-UHFFFAOYSA-N 1,1,2,4,4,4-hexafluorobutyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(F)(F)C(F)CC(F)(F)F LCPUCXXYIYXLJY-UHFFFAOYSA-N 0.000 description 1
- YJKHMSPWWGBKTN-UHFFFAOYSA-N 2,2,3,3,4,4,5,5,6,6,7,7-dodecafluoroheptyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)F YJKHMSPWWGBKTN-UHFFFAOYSA-N 0.000 description 1
- WQPMYSHJKXVTME-UHFFFAOYSA-N 3-hydroxypropane-1-sulfonic acid Chemical compound OCCCS(O)(=O)=O WQPMYSHJKXVTME-UHFFFAOYSA-N 0.000 description 1
- QCVGEOXPDFCNHA-UHFFFAOYSA-N 5,5-dimethyl-2,4-dioxo-1,3-oxazolidine-3-carboxamide Chemical compound CC1(C)OC(=O)N(C(N)=O)C1=O QCVGEOXPDFCNHA-UHFFFAOYSA-N 0.000 description 1
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 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 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229930003268 Vitamin C Natural products 0.000 description 1
- 230000032900 absorption of visible light Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 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 description 1
- 231100000693 bioaccumulation Toxicity 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000014103 egg white Nutrition 0.000 description 1
- 210000000969 egg white Anatomy 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-M ethenesulfonate Chemical compound [O-]S(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-M 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000675 fabric finishing Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009962 finishing (textile) Methods 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 235000001727 glucose Nutrition 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000005394 methallyl group Chemical group 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- ZPIRTVJRHUMMOI-UHFFFAOYSA-N octoxybenzene Chemical compound CCCCCCCCOC1=CC=CC=C1 ZPIRTVJRHUMMOI-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical group [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- XIVPVSIDXBTZLM-UHFFFAOYSA-N prop-2-enyl 2,2,2-trifluoroacetate Chemical compound FC(F)(F)C(=O)OCC=C XIVPVSIDXBTZLM-UHFFFAOYSA-N 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 238000004729 solvothermal method Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000012430 stability testing Methods 0.000 description 1
- 231100000378 teratogenic Toxicity 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 235000019154 vitamin C Nutrition 0.000 description 1
- 239000011718 vitamin C Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/30—Emulsion polymerisation with the aid of emulsifying agents non-ionic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
-
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention relates to a modified styrene-acrylic emulsion and a preparation method thereof. The modified styrene-acrylic emulsion is prepared by carrying out polymerization reaction on acrylate, styrene, acrylic acid, acrylamide, perfluoropolyether methacrylate and a carbon quantum dot-titanium dioxide compound under the action of an initiator and an emulsifier. By adding perfluoropolyether methacrylate, the emulsion is endowed with better film-forming property; the carbon quantum dot-titanium dioxide composite is added to be compounded with other components, so that the stability, corrosion resistance and wear resistance of the styrene-acrylic emulsion are enhanced.
Description
Technical Field
The invention relates to the field of materials, and particularly relates to a modified styrene-acrylic emulsion and a preparation method thereof.
Background
Styrene-acrylic emulsion is polymerized from acrylate monomer and styrene, and is widely applied in the fields of metal layer coating, building material coating, adhesive and the like. However, styrene-acrylic emulsion is still imperfect in the aspects of oxidation resistance, expansibility, water resistance and the like, and the application range of the styrene-acrylic emulsion is limited to a great extent.
In the prior art, the modified styrene-acrylic emulsion is usually modified, for example, organic fluorine is adopted for modification, and common fluorine-containing monomers are trifluoroacetic acid allyl ester, hexafluorobutyl methacrylate, dodecafluoro heptyl methacrylate, perfluoroalkyl ethyl acrylate or perfluoroalkyl ethyl methacrylate, so that the performance of the styrene-acrylic emulsion is improved to a certain extent, but the problems that the performances such as emulsion stability, hardness, corrosion resistance and the like cannot meet the requirements and the like still exist; in addition, the long-chain acrylate polymer containing perfluoroalkyl has the defects of difficult degradation, easy biological accumulation and the like, thereby causing adverse effects on the environment and being limited in use. For another example, nano modification is adopted to diffuse the nano particles in the emulsion, so that the advantages of organic molecules and inorganic molecules are fully exerted, but the problem that the nano particles cannot be uniformly dispersed in the styrene-acrylic emulsion is still a main problem.
It is reported that the perfluoropolyether has no bioaccumulation, probably because of the intervention of oxygen atoms in the polyether chain, so that the perfluoropolyether has no dense fluorine shell like perfluoroalkane, small molecules easily enter the main chain, and the perfluoropolyether is easy to degrade and has no potential teratogenic, carcinogenic and other hazards to organisms. In the prior art, the perfluoropolyether carboxylate is mainly applied to the field of fabric finishing agents, the fabric is endowed with good water and oil properties, and reports on the aspects of styrene-acrylic emulsion or improvement of the stability and corrosion resistance of the styrene-acrylic emulsion are not found.
Carbon quantum dots (CDs or CQDs) are generally spherical particles with the diameter of less than 10nm, are composed of sp2/sp3 carbon clusters with amorphous structures or nanocrystal structures, have various excellent optical properties such as optical absorption, photoluminescence, chemiluminescence, electrochemiluminescence and the like, and have great potential application values in the fields of biology, medicine, chemical engineering, electronics and the like. CDs are usually reacted with TiO2Compounding to prepare CDs-TiO2On one hand, the photocatalyst has low material toxicity, and overcomes the defect of high toxicity of the traditional quantum dots; on the other hand can effectively inhibitThe recombination of the photogenerated electrons and the holes enhances the absorption of ultraviolet light and expands the absorption of visible light and even near infrared light, thereby improving the photocatalytic activity of the material; there is no report on the stability and corrosion resistance of styrene-acrylic emulsion or styrene-acrylic emulsion.
The modification research of the styrene-acrylic emulsion needs to be continuously carried out.
Disclosure of Invention
In order to solve at least one of the problems, the invention provides a modified styrene-acrylic emulsion and a preparation method thereof, so that the styrene-acrylic emulsion with excellent performance is obtained, and on the one hand, the perfluoropolyether carboxylic ester is used and polymerized with other components of the invention, so that the emulsion is endowed with better film-forming property and meets the requirement of environmental protection; on the other hand, the used carbon quantum dot-titanium dioxide compound has a spheroidal structure and a specific size, can be uniformly dispersed in the emulsion, and forms strong chemical bonding through the reaction of various functional groups and other components, so that the emulsion coating has a more compact structure, and the stability of the emulsion is enhanced; the invention realizes the compounding of the nano-particle carbon quantum dot-titanium dioxide compound and other components, and can effectively improve the stability and corrosion resistance of the emulsion.
In some embodiments, the modified styrene-acrylic emulsion is prepared by carrying out polymerization reaction on acrylate, styrene, acrylic acid, acrylamide, perfluoropolyether methacrylate and a carbon quantum dot-titanium dioxide compound under the action of an initiator and an emulsifier;
the acrylate is methyl methacrylate, ethyl methacrylate, methyl acrylate or ethyl acrylate;
the acrylamide is N-hydroxyethyl acrylamide, N-hydroxymethyl acrylamide or N, N' -methylene bisacrylamide;
the molecular formula of the perfluoropolyether methacrylate is [ CF (CF)3)CF2O]n-CH2-O-COC(CH3)＝CH2；
The carbon quantum dot-titanium dioxide composite consists of dispersed spheroidal carbon particles, and the size of the carbon quantum dot-titanium dioxide composite is less than 10 nm;
the initiator is sodium persulfate, potassium persulfate, ammonium persulfate, azobisisobutyronitrile, azobisisobutyramidine hydrochloride, azobisisobutyronitrile hydrochloride or 2, 2-azobis (2-methylpropylammonium) dihydrochloride;
the emulsifier is the combination of isomeric tridecanol polyoxyethylene ether, sorbitan fatty acid ester and tween-20.
In some of these embodiments, the perfluoropolyether methacrylates of the present invention have a weight average molecular weight of 1000-3000.
Preferred perfluoropolyether methacrylates of the invention have a weight average molecular weight of 1500-2000; the invention selects perfluoropolyether methacrylate with proper molecular weight, and the perfluoropolyether methacrylate is polymerized with other monomers of the invention to endow the modified styrene-acrylic emulsion with better film-forming property.
Preferably, the amount of the perfluoropolyether methacrylate in the modified styrene-acrylic emulsion is 10-15 wt%.
In some embodiments, the carbon quantum dots of the present invention can be synthesized by known conventional methods, such as electrochemical synthesis, chemical oxidation, combustion, hydrothermal synthesis, solvothermal synthesis, microwave synthesis, and the like.
Preferably, the carbon quantum dots are prepared by using a hydrothermal method with a carbon source and water as raw materials; the carbon source can be selected from fruit juice, milk, egg white, vitamin C, glucose, sucrose, etc. The preparation method comprises the following steps: mixing a carbon source with water, reacting for 4-10 h at 100-250 ℃, cooling, centrifuging and taking supernatant to obtain a solution containing carbon quantum dots.
The carbon quantum dot-titanium dioxide composite can be obtained by compounding carbon quantum dots (or a solution containing the carbon quantum dots) and titanium dioxide serving as raw materials by adopting the conventional method.
Preferably, the carbon quantum dot-titanium dioxide composite is prepared by the following method: the carbon quantum dots (or the solution containing the carbon quantum dots), titanium dioxide and water are thoroughly mixed and then thoroughly dried. It is further preferred according to the invention that said intensive mixing comprises: stirring and ultrasonic processing; and the degree and time of the stirring and the ultrasonic treatment are enough to ensure that the carbon quantum dots and the titanium dioxide are fully dispersed, mixed and dissolved in the water. Further preferred according to the invention said intensive drying comprises: drying for 5-20 h at 60-100 ℃ under vacuum condition.
The research of the invention shows that the carbon quantum dot-titanium dioxide composite has unique performance, for example, the surface of the composite is rich in functional groups such as carboxyl, hydroxyl and the like, has no toxicity, good biocompatibility, easy functional modification and unique size and shape, the size is below 10nm, and the composite consists of dispersed spheroidal carbon particles; therefore, the carbon quantum dot-titanium dioxide composite reacts with other components through various functional groups to form strong chemical bonding, so that the emulsion coating has a more compact structure and can play the rigidity role of the carbon quantum dot-titanium dioxide composite, thereby enhancing the stability and the wear resistance of the modified styrene-acrylic emulsion. Compared with the simple use of titanium dioxide, the method avoids the problems of serious agglomeration phenomenon, poor stability, easy layering, easy sedimentation and the like.
In addition, the titanium dioxide can shield ultraviolet rays, prevent the ultraviolet rays from invading and prolong the service life of the emulsion.
Preferably, the amount of the carbon quantum dot-titanium dioxide composite in the modified styrene-acrylic emulsion is 2-6 wt%; more preferably, the amount of the carbon quantum dot-titanium dioxide composite in the modified styrene-acrylic emulsion is 4-6 wt%. The dosage of the carbon quantum dot-titanium dioxide composite is too low, and the wear resistance and the corrosion resistance of the modified styrene-acrylic emulsion cannot be obviously improved; the dosage is too high to effectively bond with other components, which is not favorable for the stability of the emulsion.
Most preferably, the emulsifier provided by the invention comprises the following components in parts by mass: sorbitan fatty acid ester: tween-20 ═ 1:1: 1; within the range of the mixture ratio, the emulsifying effect is good, and the polymerization effect is highest.
In the prior art, the emulsifier is of various types, including, but not limited to, Sodium Dodecyl Sulfate (SDS), sodium dodecyl benzene sulfonate (K-12), Sodium Vinyl Sulfonate (SVS), sodium alkyl amide vinyl sulfonate (DNS-86), sodium methallyl hydroxypropyl sulfonate (HPMAS), allyloxy hydroxypropyl sulfonate (HAPS), Cetyl Trimethyl Ammonium Bromide (CTAB), isomeric tridecyl alcohol polyoxyethylene ether, polyethylene glycol octyl phenyl ether, acrylic acid polyether phosphate, and the like. The conventional emulsifier has poor emulsifying effect, poor dispersion of emulsion drops, large emulsion drops and high possibility of breaking emulsion to generate gel in the polymerization process.
Compared with the prior art, the emulsifier disclosed by the invention is a combination of three emulsifiers, and has the advantages that on one hand, the emulsifier has a better emulsifying effect, the particle size of a latex bundle formed in the polymerization process is small, the polymerization rate can be increased, and on the other hand, the modified styrene-acrylic emulsion disclosed by the invention has better stability.
Preferably, the emulsifier of the invention is used in the modified styrene-acrylic emulsion in an amount of 0.1-1.5 wt%. The research of the invention shows that when the dosage of the emulsifier is low, the emulsification effect can not be achieved, the monomer conversion rate is improved along with the increase of the dosage of the emulsifier, and when the dosage of the emulsifier is further increased, for example, the dosage exceeds 1.5 wt%, gel begins to generate in the polymer, which affects the film forming property of the emulsion. More preferably, the emulsifier of the present invention is preferably used in an amount of 0.3 to 0.9 wt% in the modified styrene-acrylic emulsion, taking the combination of polymerization performance and emulsion performance into consideration.
In one embodiment, the modified styrene-acrylic emulsion comprises the following components in parts by mass: 10-20 parts of acrylate, 10-25 parts of styrene, 0.1-1.5 parts of acrylic acid, 0.1-5 parts of acrylamide, 8-20 parts of perfluoropolyether methacrylate, 2-6 parts of carbon quantum dot-titanium dioxide compound, 0.05-1 part of initiator, 0.1-1.5 parts of emulsifier and the balance of water, wherein the sum of the parts by mass of the components is 100 parts.
In another embodiment, the modified styrene-acrylic emulsion of the invention comprises the following components in parts by mass: 10-20 parts of acrylate, 15-20 parts of styrene, 0.5-1 part of acrylic acid, 0.5-3 parts of acrylamide, 10-15 parts of perfluoropolyether methacrylate, 4-6 parts of carbon quantum dot-titanium dioxide compound, 0.1-0.5 part of initiator, 0.1-1 part of emulsifier and the balance of water, wherein the sum of the parts by mass of the components is 100 parts.
Preferably, the modified styrene-acrylic emulsion of the invention comprises the following components in parts by mass: 10-20 parts of acrylate, 15-20 parts of styrene, 0.5-0.9 part of acrylic acid, 0.8-2.6 parts of N-hydroxymethyl acrylamide, 10-15 parts of perfluoropolyether methacrylate, 4-6 parts of carbon quantum dot-titanium dioxide compound, 0.1-0.5 part of initiator, 0.3-0.9 part of emulsifier and the balance of water, wherein the sum of the parts by mass of the components is 100 parts.
On the other hand, the invention provides a preparation method of the modified styrene-acrylic emulsion, which comprises the following steps:
s1: emulsifying 1/3 emulsifier, deionized water, methyl methacrylate, styrene, acrylic acid, acrylamide, perfluoropolyether methacrylate and carbon quantum dot-titanium dioxide compound for 45-100min by a high-pressure homogenizer to obtain pre-emulsion;
s2: adding the rest 2/3 emulsifier and 1/2 initiator into deionized water, heating to 60-90 ℃, then dropwise adding the pre-emulsion and the rest 1/2 initiator, and carrying out polymerization reaction to obtain the modified styrene-acrylic emulsion.
Compared with the prior art, the invention has the beneficial effects that: (1) the excellent characteristics of the perfluoropolyether are introduced into the styrene-acrylic emulsion, and the perfluoropolyether is polymerized with other components of the invention, so that the emulsion is endowed with better film-forming property and meets the requirement of environmental protection; (2) the carbon quantum dot-titanium dioxide composite is added into the styrene-acrylic emulsion, so that the stability of the emulsion is enhanced; (3) the strong bonding of the carbon quantum dot-titanium dioxide compound and other components is realized, and the stability, corrosion resistance and wear resistance of the emulsion can be effectively improved.
Detailed Description
The present invention will be better understood from the following examples, but is by no means limited to these examples. Raw materials, equipment and the like adopted by the invention can be purchased from the market or commonly used in the field, wherein the emulsifier is isomeric tridecanol polyoxyethylene ether, sorbitan fatty acid ester and tween-20, and the mass ratio is 1:1: 1; the methods in the examples are conventional in the art unless otherwise specified.
Preparation of carbon quantum dot-titanium dioxide composite
Preparation example 1
Dissolving 0.60g of sucrose in 40mL of deionized water, stirring to dissolve the sucrose, pouring the solution into a reaction kettle, placing the reaction kettle in a drying oven for reaction at 130 ℃ for 4.5h, naturally cooling, centrifuging, and taking supernatant fluid, namely Carbon Quantum Dot Solution (CQDs);
30mL of carbon quantum dot solution is taken, and 45mL of deionized water and 3g of TiO are added2Magnetically stirring the mixed solution for 2.5h, performing ultrasonic treatment for 2h, filtering, transferring the product to a vacuum drying oven, and drying at 80 deg.C for 12h to obtain CQDs/TiO2And (c) a complex.
Preparation example 2
Dissolving 0.60g of sucrose in 40mL of deionized water, stirring to dissolve the sucrose, pouring the solution into a reaction kettle, placing the reaction kettle in a drying oven for 8 hours at 160 ℃, naturally cooling, centrifuging, and taking supernatant fluid to obtain Carbon Quantum Dot Solution (CQDs);
30mL of carbon quantum dot solution is taken, and 45mL of deionized water and 3g of TiO are added2Magnetically stirring the mixed solution for 4.5h, performing ultrasonic treatment for 1.5h, filtering, transferring to a vacuum drying oven, and drying at 80 deg.C for 12h to obtain CQDs/TiO2And (c) a complex.
Example 1
Adding 30mL of deionized water into a 500mL three-neck flask, adding 0.3g of emulsifier, and slowly stirring at a constant speed; then, 20g of methyl methacrylate, 15g of styrene, 0.5g of acrylic acid, 0.8g N-hydroxymethyl acrylamide, 10g of perfluoropolyether methacrylate (weight average molecular weight 1600) and 4g of the carbon quantum dot-titanium dioxide composite of preparation example 1 are sequentially added, and emulsified for 45min by a high-pressure homogenizer to obtain a pre-emulsion;
0.6g of emulsifier and 0.15g of potassium persulfate are uniformly mixed in 18.5mL of deionized water, the temperature is raised to 80 ℃, the pre-emulsion and 0.15g of potassium persulfate are dropwise added, the pre-emulsion is dropwise added for 2 hours, the initiator aqueous solution is dropwise added for 3 hours, and polymerization reaction is carried out, so as to obtain the modified styrene-acrylic emulsion.
Example 2
Adding 30mL of deionized water into a 500mL three-neck flask, adding 0.1g of emulsifier, and slowly stirring at a constant speed; then, 10g of ethyl methacrylate, 20g of styrene, 0.7g of acrylic acid, 1.5g N-hydroxyethyl acrylamide, 12g of perfluoropolyether methacrylate (weight average molecular weight 2000) and 5g of the carbon quantum dot-titanium dioxide composite of preparation example 1 are added in sequence, and emulsified for 60min by a high-pressure homogenizer to obtain a pre-emulsion;
0.2g of emulsifier and 0.25g of ammonium persulfate are uniformly mixed in 20mL of deionized water, the temperature is raised to 80 ℃, the pre-emulsion and 0.25g of ammonium persulfate are dripped, the pre-emulsion is dripped for 2 hours, the initiator aqueous solution is dripped for 3 hours, and polymerization reaction is carried out, so as to obtain the modified styrene-acrylic emulsion.
Example 3
Adding 30mL of deionized water into a 500mL three-neck flask, adding 0.2g of emulsifier, and slowly stirring at a constant speed; then, 15g of methyl acrylate, 15g of styrene, 0.9g of acrylic acid, 2.6g N, N' -methylenebisacrylamide, 15g of perfluoropolyether methacrylate (weight average molecular weight 2000) and 6g of the carbon quantum dot-titanium dioxide compound prepared in the preparation example 2 are sequentially added, and emulsified for 75min by a high-pressure homogenizer to obtain a pre-emulsion;
0.4g of emulsifier and 0.05g of potassium persulfate are uniformly mixed in 14.8mL of deionized water, the temperature is raised to 80 ℃, the pre-emulsion and 0.05g of potassium persulfate are dropwise added, the pre-emulsion is dropwise added for 4 hours, the initiator aqueous solution is dropwise added for 6 hours, and polymerization reaction is carried out, so as to obtain the modified styrene-acrylic emulsion.
Comparative example 1
Comparative example 1 the carbon quantum dot-titanium dioxide composite was replaced with nano titanium dioxide, and the other example was the same as example 3.
Comparative example 2
Comparative example 2 the carbon quantum dot-titanium dioxide composite was replaced with a quantum dot-filled amino fullerene, otherwise the same as example 3; the preparation method of the quantum dot filled amino fullerene comprises the following steps: 10g of the carbon quantum dots obtained in preparation example 2 and 0.01mol of the amino fullerene were ultrasonically dispersed in 100mL of 95% ethanol solution for 2 hours at an ultrasonic power of 1 KW.
Performance testing
And (3) standing stability test: the emulsion was allowed to stand at room temperature for 1 month, and the state of the emulsion was observed.
And (3) testing thermal stability: standing the emulsion at 80 deg.C for 4h to observe emulsion state; then slowly returning to room temperature to observe the state of the emulsion.
And (3) centrifugal stability testing: 5mL of the emulsion is centrifuged at 3000r/min for 15min, and the state of the emulsion is observed.
And (3) corrosion resistance testing: and (3) soaking the emulsion film after being naturally dried for one week in 5% hydrochloric acid, 5% NaOH and 3% saline water respectively, and observing and recording the surface state change and the corrosion resistance time of the emulsion film.
And (3) wear resistance test: and (3) carrying out a coating wear resistance test according to GB/T4893.8-2013, and measuring the wear degree of a coated sample by using a paint film abrader at a working disc rotating speed of 60r/min after 200 revolutions, wherein 1 grade represents white exposure, 2 grade represents local slight white exposure, 3 grade represents local obvious white exposure, and 4 grade represents severe white exposure.
Table 1 results of performance testing
The test results in table 1 show that the modified styrene-acrylic emulsion prepared by the invention has better thermal stability, centrifugal stability, wear resistance and acid/alkali/salt corrosion resistance. Compared with the prior art, the existence of the carbon quantum dot-titanium dioxide compound has larger influence on the performance of the emulsion, and can obviously enhance the stability, the wear resistance and the corrosion resistance of the emulsion.
The present invention is not limited to the above-described embodiments and the specific details of the above-described embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are included in the protection scope of the present invention.
Claims (9)
1. The modified styrene-acrylic emulsion is characterized by being prepared by carrying out polymerization reaction on acrylate, styrene, acrylic acid, acrylamide, perfluoropolyether methacrylate and a carbon quantum dot-titanium dioxide compound under the action of an initiator and an emulsifier.
2. The modified styrene-acrylic emulsion according to claim 1,
the acrylate is methyl methacrylate, ethyl methacrylate, methyl acrylate or ethyl acrylate;
the acrylamide is N-hydroxyethyl acrylamide, N-hydroxymethyl acrylamide or N, N' -methylene bisacrylamide;
the molecular formula of the perfluoropolyether methacrylate is [ CF (CF)3)CF2O]n-CH2-O-COC(CH3)＝CH2；
The initiator is sodium persulfate, potassium persulfate, ammonium persulfate, azobisisobutyronitrile, azobisisobutyramidine hydrochloride, azobisisobutyronitrile hydrochloride or 2, 2-azobis (2-methylpropylammonium) dihydrochloride;
the emulsifier is the combination of isomeric tridecanol polyoxyethylene ether, sorbitan fatty acid ester and tween-20.
3. The modified styrene-acrylic emulsion according to claim 1 or 2,
the weight average molecular weight of the perfluoropolyether methacrylate is 1000-3000.
4. The modified styrene-acrylic emulsion according to claim 1 or 2,
the isomeric tridecanol polyoxyethylene ether, the sorbitan fatty acid ester and the tween-20 have the mass ratio of 1:1: 1.
5. the modified styrene-acrylic emulsion according to any one of claims 1 to 4, wherein,
the amount of the perfluoropolyether methacrylate in the modified styrene-acrylic emulsion is 10-15 wt%;
the amount of the carbon quantum dot-titanium dioxide compound in the modified styrene-acrylic emulsion is 4-6 wt%;
the dosage of the emulsifier in the modified styrene-acrylic emulsion is 0.3-0.9 wt%.
6. The modified styrene-acrylic emulsion according to any one of claims 1 to 4, wherein the modified styrene-acrylic emulsion comprises the following components in parts by mass: 10-20 parts of acrylate, 10-25 parts of styrene, 0.1-1.5 parts of acrylic acid, 0.1-5 parts of acrylamide, 8-20 parts of perfluoropolyether methacrylate, 2-6 parts of carbon quantum dot-titanium dioxide compound, 0.05-1 part of initiator, 0.1-1.5 parts of emulsifier and the balance of water, wherein the sum of the parts by mass of the components is 100 parts.
7. The modified styrene-acrylic emulsion according to claim 6, wherein the modified styrene-acrylic emulsion comprises the following components in parts by mass: 10-20 parts of acrylate, 15-20 parts of styrene, 0.5-1 part of acrylic acid, 0.5-3 parts of acrylamide, 10-15 parts of perfluoropolyether methacrylate, 4-6 parts of carbon quantum dot-titanium dioxide compound, 0.1-0.5 part of initiator, 0.1-1 part of emulsifier and the balance of water, wherein the sum of the parts by mass of the components is 100 parts.
8. The modified styrene-acrylic emulsion according to claim 7, wherein the modified styrene-acrylic emulsion comprises the following components in parts by mass: 10-20 parts of acrylate, 15-20 parts of styrene, 0.5-0.9 part of acrylic acid, 0.8-2.6 parts of N-hydroxymethyl acrylamide, 10-15 parts of perfluoropolyether methacrylate, 4-6 parts of carbon quantum dot-titanium dioxide compound, 0.1-0.5 part of initiator, 0.3-0.9 part of emulsifier and the balance of water, wherein the sum of the parts by mass of the components is 100 parts.
9. The method for preparing the modified styrene-acrylic emulsion according to any one of claims 1 to 8, wherein the method comprises the following steps:
s1: emulsifying 1/3 emulsifier, deionized water, methyl methacrylate, styrene, acrylic acid, acrylamide, perfluoropolyether methacrylate and carbon quantum dot-titanium dioxide compound for 45-100min by a high-pressure homogenizer to obtain pre-emulsion;
s2: adding the rest 2/3 emulsifier and 1/2 initiator into deionized water, heating to 60-90 ℃, then dropwise adding the pre-emulsion and the rest 1/2 initiator, and carrying out polymerization reaction to obtain the modified styrene-acrylic emulsion.
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| CN116875119B (en) * | 2023-07-25 | 2024-02-27 | 中山永辉化工股份有限公司 | Paint composition and preparation method thereof |
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