CN110698943B - Weather-resistant emulsion and preparation method and application thereof - Google Patents
Weather-resistant emulsion and preparation method and application thereof Download PDFInfo
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- CN110698943B CN110698943B CN201911020888.4A CN201911020888A CN110698943B CN 110698943 B CN110698943 B CN 110698943B CN 201911020888 A CN201911020888 A CN 201911020888A CN 110698943 B CN110698943 B CN 110698943B
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- resistant
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- 239000000839 emulsion Substances 0.000 title claims abstract description 70
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 238000004945 emulsification Methods 0.000 title description 2
- 239000000178 monomer Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000000576 coating method Methods 0.000 claims abstract description 32
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 239000003999 initiator Substances 0.000 claims abstract description 27
- 239000008367 deionised water Substances 0.000 claims abstract description 19
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 19
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 17
- 239000003755 preservative agent Substances 0.000 claims abstract description 16
- 230000002335 preservative effect Effects 0.000 claims abstract description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 15
- 239000013530 defoamer Substances 0.000 claims abstract description 10
- 239000006185 dispersion Substances 0.000 claims description 32
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 24
- -1 allyl ammonium alkyl sulfate Chemical class 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 15
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 15
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 15
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 15
- 229920000570 polyether Polymers 0.000 claims description 15
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 14
- 239000002518 antifoaming agent Substances 0.000 claims description 12
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 11
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 11
- 239000001099 ammonium carbonate Substances 0.000 claims description 11
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 11
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 11
- 239000011734 sodium Substances 0.000 claims description 11
- 229910052708 sodium Inorganic materials 0.000 claims description 11
- KBLWLMPSVYBVDK-UHFFFAOYSA-N cyclohexyl prop-2-enoate Chemical compound C=CC(=O)OC1CCCCC1 KBLWLMPSVYBVDK-UHFFFAOYSA-N 0.000 claims description 10
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 9
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 8
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 8
- SJMYWORNLPSJQO-UHFFFAOYSA-N tert-butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(C)(C)C SJMYWORNLPSJQO-UHFFFAOYSA-N 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000006179 pH buffering agent Substances 0.000 claims description 7
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 6
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-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
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- OIWOHHBRDFKZNC-UHFFFAOYSA-N cyclohexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1CCCCC1 OIWOHHBRDFKZNC-UHFFFAOYSA-N 0.000 claims description 6
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 6
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 6
- 235000011152 sodium sulphate Nutrition 0.000 claims description 6
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 claims description 6
- 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 5
- 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 claims description 5
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 5
- HQCFDOOSGDZRII-UHFFFAOYSA-M sodium;tridecyl sulfate Chemical compound [Na+].CCCCCCCCCCCCCOS([O-])(=O)=O HQCFDOOSGDZRII-UHFFFAOYSA-M 0.000 claims description 5
- PSGCQDPCAWOCSH-UHFFFAOYSA-N (4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl) prop-2-enoate Chemical compound C1CC2(C)C(OC(=O)C=C)CC1C2(C)C PSGCQDPCAWOCSH-UHFFFAOYSA-N 0.000 claims description 4
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 claims description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 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
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 claims description 4
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 claims description 4
- 150000005690 diesters Chemical class 0.000 claims description 4
- 239000002270 dispersing agent Substances 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
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 4
- 239000000080 wetting agent Substances 0.000 claims description 4
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 3
- STHWVYJPPPDLSL-UHFFFAOYSA-N CC(C)CCCC(C)OC(=O)C=C Chemical compound CC(C)CCCC(C)OC(=O)C=C STHWVYJPPPDLSL-UHFFFAOYSA-N 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- JUEDJIRGERJMGO-UHFFFAOYSA-N C(C)(C)[Na].C(C=C)(=O)N Chemical compound C(C)(C)[Na].C(C=C)(=O)N JUEDJIRGERJMGO-UHFFFAOYSA-N 0.000 claims description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 230000000844 anti-bacterial effect Effects 0.000 claims description 2
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 239000003899 bactericide agent Substances 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 239000000344 soap Substances 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 239000002562 thickening agent Substances 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 16
- 238000005336 cracking Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002904 solvent Substances 0.000 abstract description 6
- 238000003860 storage Methods 0.000 abstract description 6
- 230000006750 UV protection Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 32
- JDXQSTLUHNAVMN-UHFFFAOYSA-M sodium propane-2-sulfonate prop-2-enamide Chemical compound [Na+].NC(=O)C=C.CC(C)S([O-])(=O)=O JDXQSTLUHNAVMN-UHFFFAOYSA-M 0.000 description 6
- 239000003973 paint Substances 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- FJSPGHNSBJVXEH-UHFFFAOYSA-N C(C=C)(=O)NOS(=O)(=O)C(C)C.[Na] Chemical compound C(C=C)(=O)NOS(=O)(=O)C(C)C.[Na] FJSPGHNSBJVXEH-UHFFFAOYSA-N 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 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
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
-
- 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
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1668—Vinyl-type polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
- Polymerisation Methods In General (AREA)
Abstract
A weather-resistant emulsion, a preparation method and application thereof belong to the technical field of exterior wall coating, and comprise the following components in parts by weight: 400-500 parts of deionized water, 1-50 parts of reactive emulsifier, 0.5-50 parts of hydrophilic monomer, 0.5-100 parts of functional monomer, 0.5-400 parts of weather-resistant monomer, 0.5-450 parts of main monomer, 0.2-20 parts of silane coupling agent, 0.2-10 parts of initiator, 0.2-10 parts of PH buffer, 0.2-10 parts of defoamer, 0.01-1 part of preservative and 2-10 parts of pH regulator; the weather-resistant emulsion has the advantages of long ageing resistance time, good ageing resistance effect, good cracking resistance, good water resistance, ultraviolet resistance, good solvent resistance, stable storage and long service life, and the exterior wall coating prepared from the weather-resistant emulsion has the advantages of long service life, difficult color change, good toughness, capability of reducing cracking resistance, and excellent weather resistance, ageing resistance and contamination resistance.
Description
Technical Field
The invention belongs to the technical field of exterior wall coating, relates to emulsion, a preparation method and application thereof, and in particular relates to weather-resistant emulsion, and a preparation method and application thereof.
Background
With the development of society and the progress of science and technology, the living standard of people is higher and higher, and the requirements on housing conditions are higher and higher, so that the requirements on the building industry are also higher and higher. The building coating has important application in the building industry, can beautify the building and has good protection effect on the wall.
The aging resistance time of the existing external wall coating on the market is 600 hours, and some products cannot reach the standard. However, the requirements for external wall paint in practical construction and living requirements are far higher than the requirements, and the requirements reach more than 1000 hours, preferably 1500-2000 hours. The lower aging resistance is a serious disadvantage of the existing external wall coating on the market, not only seriously affecting the service life of the external wall coating, but also increasing the cost of users or enterprises in the aspect of external wall coating. The development of society and the pursuit of people on life quality make the improvement of the performance of the exterior wall coating require, and the development of an exterior wall coating with good ageing resistance is also urgently needed. The organosilicon monomer modification technology has better weather resistance, but has high cost, poor film forming property and easy cracking. Fluorocarbon emulsions are excellent in weatherability, but very poor in stain resistance, and are exceptionally costly.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a weather-resistant emulsion which has long ageing resistance time, good ageing resistance effect, good cracking resistance, good water resistance, ultraviolet resistance, good solvent resistance, stable storage and long service life, and a preparation method and application of the weather-resistant emulsion.
The technical scheme adopted by the invention is as follows:
The weather-resistant emulsion is characterized by comprising the following components in parts by weight: 400-500 parts of deionized water, 1-50 parts of reactive emulsifier, 0.5-50 parts of hydrophilic monomer, 0.5-100 parts of functional monomer, 0.5-400 parts of weather-resistant monomer, 0.5-450 parts of main monomer, 0.2-20 parts of silane coupling agent, 0.2-10 parts of initiator, 0.2-10 parts of pH buffering agent, 0.2-10 parts of defoaming agent, 0.01-1 part of preservative and 2-10 parts of pH regulator; the hydrophilic monomer is one or more than two of acrylic acid, methacrylic acid, acrylonitrile, isobornyl acrylate, maleic acid, glycidyl methacrylate, acrylamide and methacrylamide; the functional monomer is one or more than two of n-butyl methacrylate, tert-butyl acrylate and tert-butyl methacrylate; the weather-resistant monomer is one or more than two of cyclohexyl acrylate and 2-cyclohexyl methacrylate; the main monomer is one or more than two of styrene, methyl methacrylate, butyl acrylate and 2-ethylhexyl acrylate.
The reactive emulsifier is one or more than two of allyl ammonium alkyl sulfate, allyl alcohol ether sodium sulfate, allyl alkyl sulfosuccinic acid diester sodium, alkyl propenyl phenoxy polyether ammonium sulfate, 2-allyl ether-3-hydroxy propane-1-sodium sulfonate, acrylamide isopropyl sodium sulfonate, double bond-containing sulfosuccinic acid diester sodium, allyl isomerism tridecyl sodium sulfate and allyl undecyl sulfosuccinic acid amyl sodium.
The silane coupling agent is one or more than two of vinyl triethoxysilane, vinyl trimethoxysilane and gamma- (methacryloyloxy) propyl trimethoxysilane.
The initiator is one or more than two of potassium persulfate, ammonium persulfate and sodium persulfate.
The pH buffering agent is one or more of sodium carbonate, sodium bicarbonate 、, ammonium carbonate and ammonium bicarbonate.
The pH regulator is one or more of ammonia water, sodium hydroxide and potassium hydroxide.
The preparation method of the weather-resistant emulsion comprises the following steps:
step 1, weighing the components according to the raw material ratio of claim 1;
Step 2, adopting deionized 200-240 parts of water to dissolve the reactive emulsifier to obtain an emulsifier solution;
Step3, mixing a hydrophilic monomer, a functional monomer, a weather-resistant monomer and a silane coupling agent with a main monomer, and adding the mixture into the emulsifier solution under the stirring condition for dispersion to obtain a dispersion liquid;
Step 4, adding 200-240 parts of water and a pH buffering agent into a reactor, heating to 80-88 ℃ under the condition of stirring, and adding 1-10wt% of the dispersion liquid and 10-30wt% of an initiator into the reactor at one time for reaction to obtain seed liquid;
And 5, dissolving the rest initiator by using the rest deionized water to obtain an initiator solution, then dripping the initiator solution and the rest dispersion into the seed solution, dripping for 180-300min at 82-88 ℃, preserving the heat for 60-180min after dripping, cooling to below 50 ℃, adding the pH regulator, the defoamer and the preservative, and uniformly stirring to obtain the weather-resistant emulsion.
The use of the weather-resistant emulsion as described above in exterior wall coatings.
The application of the weather-resistant emulsion in the exterior wall coating comprises the following components in parts by weight: 10-25 parts of water, 1-5 parts of alcohol ester serving as a film forming auxiliary agent, 0.1-1 part of metal soap defoamer, 0.1-1 part of organosilicon defoamer, 0.1-1 part of sodium salt dispersant, 1-5 parts of propylene glycol, 0.1-0.5 part of wetting agent, 10-25 parts of rutile titanium dioxide, 10-30 parts of 700-mesh heavy calcium carbonate, 5-10 parts of 1250-mesh calcined kaolin, 0.1-1 part of hydroxyethyl cellulose, 0.1-1 part of ammonia water, 20-50 parts of weather-resistant emulsion according to claim 1, 0.1-1 part of kasong bactericide, 0.1-1 part of mineral oil defoamer and 0.1-1 part of hydrophobically modified alkali swelling thickener.
The beneficial effects of the invention are as follows: the weather-resistant emulsion uses a reactive emulsifier to participate in the reaction to realize soap-free polymerization, and the reactive emulsifier, the functional monomer and the weather-resistant monomer can increase the water resistance and the solvent resistance, improve the cohesion and the toughness of a emulsion film and reduce the cracking property, thereby prolonging the service life of the outdoor use; the hydrophilic monomer provides colloid stability in the reaction, and meanwhile, the hydrophilic monomer is matched with the weather-resistant monomer to assist the dispersing agent and the wetting agent in stabilizing powder in the coating, and the cyclic side chain of the weather-resistant monomer is matched with the hydrophilic monomer to resist the attack of ultraviolet rays, so that the problem of pulverization of a paint film is greatly reduced; the condensation of the siloxane bond of the silane coupling agent with the pigment, the base material and the siloxane bond of the base material further improves the crosslinking density of the latex film and improves the water resistance of the paint film; the functional monomer, the weather-proof monomer and the silane coupling agent are combined, and the reactive emulsifier is used, so that the emulsion has excellent ageing resistance, contamination resistance, water resistance and solvent resistance, and the long-term protection and decoration effects of the exterior wall coating are truly realized; the functional monomer, the weather-proof monomer and the like are matched for use, so that the silane coupling agent is ageing-resistant and cracking-resistant, and the dosage of the silane coupling agent can be reduced.
Compared with the prior art, the preparation method of the weather-resistant emulsion has the advantages that the silane coupling agent, the functional monomer, the ductile monomer and the weather-resistant monomer are introduced in the preparation process, and the raw material components and the preparation method are matched, so that the crosslinking density of the emulsion film can be further improved in the emulsion film forming process, and the water resistance of a paint film is improved.
The external wall coating prepared from the weather-resistant emulsion has excellent water resistance, ageing resistance, cracking resistance, weather resistance, stain resistance and solvent resistance, and is stable in storage and long in service life.
Detailed Description
The invention provides a weather-resistant emulsion which has long ageing resistance, good cracking resistance, good ageing resistance, good water resistance, ultraviolet resistance, good solvent resistance, stable storage and long service life, and a preparation method and application of the weather-resistant emulsion.
The invention will be further illustrated with reference to specific examples. The allyl undecylether ammonium sulfate selected in this example was SR-10 of Japanese Ai Dike, and the alkyl propenyl phenoxy polyether ammonium sulfate was SE-10N of Japanese Ai Dike.
1. Detailed description of the preferred embodiments
I. Weather-resistant emulsion
The contents of the components are shown in Table 1 below.
Table 1:
The preparation method of the weather-resistant emulsion comprises the following steps:
step 1, weighing the components according to the raw material proportion;
Step 2, dissolving a reactive emulsifier by 200 parts of deionized water to obtain an emulsifier solution;
Step3, mixing a hydrophilic monomer, a functional monomer, a weather-resistant monomer and a silane coupling agent with a main monomer, and adding the mixture into the emulsifier solution under the stirring condition for dispersion to obtain a dispersion liquid;
step 4, 250 parts of deionized water and a pH buffering agent are added into a reactor, the temperature is raised to 82 ℃ under the condition of stirring, the dispersion liquid with the weight percent of 10 and the initiator with the weight percent of 30 are added into the reactor at one time, and the reaction is carried out for 20 minutes, so as to obtain seed liquid;
and 5, dissolving the rest initiator by using the rest deionized water to obtain an initiator solution, then dripping the initiator solution and the rest dispersion into the seed solution for 240min at the temperature of 85 ℃, preserving the heat for 120min after the dripping is finished, cooling to below 50 ℃ after the heat preservation is finished, regulating the pH to 7-8 by using ammonia water, adding a defoaming agent and a preservative, and stirring uniformly to obtain the weather-resistant emulsion.
Example 11
The weather-resistant emulsion comprises, by weight, 400 parts of deionized water, 1 part of sodium allyltridecyl sulfate, 0.2 part of acrylic acid, 0.3 part of methacrylic acid, 0.5 part of n-butyl methacrylate, 400 parts of cyclohexyl acrylate, 95 parts of methyl methacrylate, 50 parts of butyl acrylate, 50 parts of 2-isooctyl acrylate, 0.2 part of vinyl triethoxysilane, 0.2 part of potassium persulfate, 0.2 part of sodium bicarbonate, 0.2 part of a defoaming agent, 0.2 part of a preservative and 2 parts of ammonia water.
The weather-resistant emulsion of the embodiment is prepared by a method comprising the following steps:
step 1, weighing the components according to the raw material proportion;
Step 2, dissolving allyl isomerism sodium tridecyl sulfate by deionized water to obtain allyl isomerism sodium tridecyl sulfate solution;
Step 3, mixing acrylic acid, methacrylic acid, n-butyl methacrylate, cyclohexyl acrylate and vinyl triethoxysilane with methyl methacrylate, butyl acrylate and 2-isooctyl acrylate, and adding the mixture into the allyl isomerism tridecyl sodium sulfate solution under the stirring condition for dispersion to obtain a dispersion liquid;
Step 4, adding water and sodium bicarbonate into a reactor, heating to 80 ℃ under stirring, adding 1wt% of dispersion liquid and 10wt% of potassium persulfate into the reactor, and reacting to obtain seed liquid;
And 5, dissolving the residual potassium persulfate with water to obtain an initiator solution, then dripping the initiator solution and the residual dispersion into the seed solution for 240min at the temperature of 85 ℃, preserving heat for 60min after dripping, cooling to below 50 ℃, adding ammonia water to adjust the pH value to 7-8, adding a defoaming agent and a preservative, and uniformly stirring to obtain the weather-resistant emulsion.
Example 12
The weather-resistant emulsion comprises, by weight, 400 parts of deionized water, 1 part of allyl undecylether (10 EO) ammonium sulfate, 0.3 part of acrylonitrile, 0.2 part of acrylamide, 0.1 part of tert-butyl acrylate, 0.4 part of tert-butyl methacrylate, 145 parts of 2-cyclohexyl methacrylate, 200 parts of styrene, 200 parts of 2-ethylhexyl acrylate, 50 parts of butyl acrylate, 0.2 part of vinyltrimethoxysilane, 0.2 part of ammonium persulfate, 0.2 part of sodium carbonate, 0.2 part of defoamer, 0.2 part of preservative and 2 parts of ammonia water.
The weather-resistant emulsion of the embodiment is prepared by a method comprising the following steps:
step 1, weighing the components according to the raw material proportion;
Step 2, adopting deionized water to dissolve allyl undecylether (10 EO) ammonium sulfate to obtain allyl undecylether (10 EO) ammonium sulfate solution;
step 3, mixing acrylonitrile, acrylamide, tert-butyl acrylate, tert-butyl methacrylate, 2-cyclohexyl methacrylate and vinyl trimethoxy silane with styrene, 2-ethylhexyl acrylate and butyl acrylate, and adding the mixture into the allyl undecylether (10 EO) ammonium sulfate solution under the stirring condition for dispersion to obtain a dispersion liquid;
Step 4, adding water and sodium bicarbonate into a reactor, heating to 85 ℃ under stirring, adding 5wt% of the dispersion liquid and 20wt% of ammonium persulfate into the reactor, and reacting for 20min to obtain seed liquid;
and 5, dissolving the residual ammonium persulfate to obtain an initiator solution, then dripping the initiator solution and the residual dispersion into the seed solution for 240min at 88 ℃, preserving heat for 60min after dripping, cooling to below 50 ℃, adding ammonia water to adjust the pH value to 7-8, adding a defoaming agent and a preservative, and uniformly stirring to obtain the weather-resistant emulsion.
Example 13
The weather-resistant emulsion comprises, by weight, 500 parts of deionized water, 25 parts of 2-allyl ether-3-hydroxy propane-1-sodium sulfonate, 25 parts of acrylamide sodium isopropyl sulfonate, 10 parts of acrylamide, 40 parts of methacrylamide, 50 parts of n-butyl methacrylate, 10 parts of tert-butyl methacrylate, 40 parts of tert-butyl acrylate, 237 parts of cyclohexyl acrylate, 10 parts of butyl acrylate, 10 parts of gamma- (methacryloyloxy) propyl trimethoxysilane, 5 parts of vinyl triethoxysilane, 5 parts of ammonium persulfate, 5 parts of sodium persulfate, 5 parts of ammonium carbonate, 10 parts of an antifoaming agent, 1 part of a preservative and 2 parts of potassium hydroxide.
The weather-resistant emulsion of the embodiment is prepared by a method comprising the following steps:
step 1, weighing the components according to the raw material proportion;
Step 2, adopting deionized water to dissolve 2-allyl ether-3-hydroxy propane-1-sodium sulfonate and acrylamide sodium isopropyl sulfonate to obtain a mixed solution of 2-allyl ether-3-hydroxy propane-1-sodium sulfonate and acrylamide sodium isopropyl sulfonate;
Step 3, mixing acrylamide, methacrylamide, n-butyl methacrylate, tert-butyl acrylate, cyclohexyl acrylate, gamma- (methacryloyloxy) propyl trimethoxysilane, vinyl trimethoxysilane and vinyl triethoxysilane with butyl acrylate, and adding the mixture into the mixed solution of 2-allyl ether-3-hydroxy propane-1-sodium sulfonate and acrylamide sodium isopropyl sulfonate under the stirring condition for dispersion to obtain a dispersion;
Step 4, adding water, ammonium carbonate and ammonium bicarbonate into a reactor, heating to 88 ℃ under stirring, stabilizing for 15min, adding 10wt% of dispersion liquid, 30wt% of sodium persulfate and ammonium persulfate into the reactor, and reacting for 20min to obtain seed liquid;
and 5, dissolving the residual sodium persulfate and ammonium persulfate to obtain an initiator solution, then dripping the initiator solution and the residual dispersion into the seed solution for 240min at 88 ℃, preserving heat for 180min after dripping, cooling to below 50 ℃, adding potassium hydroxide to adjust the pH value, adding a defoaming agent and a preservative, and uniformly stirring to obtain the weather-resistant emulsion.
Example 14
The weather-resistant emulsion comprises, by weight, 450 parts of deionized water, 25 parts of acrylamide sodium isopropyl sulfonate, 5 parts of isobornyl acrylate, 10 parts of maleic acid, 10 parts of glycidyl methacrylate, 50 parts of tert-butyl methacrylate, 100 parts of cyclohexyl acrylate, 100 parts of 2-cyclohexyl methacrylate, 219.5 parts of methyl methacrylate, 10 parts of vinyltrimethoxysilane, 5 parts of potassium persulfate, 5 parts of ammonium carbonate, 5 parts of a defoaming agent, 0.5 part of a preservative, 2 parts of sodium hydroxide and 3 parts of potassium hydroxide.
The weather-resistant emulsion of the embodiment is prepared by a method comprising the following steps:
step 1, weighing the components according to the raw material proportion;
step2, dissolving sodium acrylamido isopropyl sulfonate by deionized water to obtain sodium acrylamido isopropyl sulfonate solution;
Step 3, mixing isobornyl acrylate, maleic acid, glycidyl methacrylate, tert-butyl methacrylate, cyclohexyl acrylate, 2-cyclohexyl methacrylate and vinyl trimethoxy silane with methyl methacrylate, and adding the mixture into the acrylamide sodium isopropyl sulfonate solution under the stirring condition for dispersion to obtain a dispersion liquid;
Step 4, adding water and ammonium carbonate into a reactor, heating to 85 ℃ under stirring, adding 1wt% of the dispersion liquid and 20wt% of potassium persulfate into the reactor, and reacting to obtain seed liquid;
And 5, dissolving the residual potassium persulfate to obtain an initiator solution, then dripping the initiator solution and the residual dispersion into the seed solution for 240min at the temperature of 82 ℃, preserving heat for 150min after dripping, cooling to below 50 ℃, adding sodium hydroxide and potassium hydroxide to regulate the pH value, adding a defoaming agent and a preservative, and uniformly stirring to obtain the weather-resistant emulsion.
Example 15
The weather-resistant emulsion comprises, by weight, 419 parts of deionized water, 20 parts of isomeric tridecyl propenyl phenoxy polyether sodium sulfate, 10 parts of allyl undecyl polyether (10 EO) ammonium sulfate, 20 parts of isomeric tridecyl propenyl phenoxy polyether ammonium sulfate, 5 parts of glycidyl methacrylate, 5 parts of acrylic acid, 40 parts of methacrylic acid, 100 parts of tert-butyl methacrylate, 200 parts of cyclohexyl acrylate, 120 parts of methyl methacrylate, 20 parts of vinyl trimethoxy silane, 10 parts of potassium persulfate, 10 parts of ammonium carbonate, 10 parts of a defoaming agent, 1 part of a preservative, 1 part of ammonia water, 4 parts of sodium hydroxide and 5 parts of potassium hydroxide.
The weather-resistant emulsion of the embodiment is prepared by a method comprising the following steps:
step 1, weighing the components according to the raw material proportion;
Step 2, deionized water is adopted to dissolve the isomeric tridecyl propenyl phenoxy polyether sodium sulfate, allyl undecyl polyether (10 EO) ammonium sulfate and isomeric tridecyl propenyl phenoxy polyether ammonium sulfate, so as to obtain a mixed solution of the isomeric tridecyl propenyl phenoxy polyether sodium sulfate, allyl undecyl polyether (10 EO) ammonium sulfate and isomeric tridecyl propenyl phenoxy polyether ammonium sulfate;
Step 3, glycidyl methacrylate, acrylic acid, methacrylic acid, tert-butyl methacrylate cyclohexyl acrylate, vinyl trimethoxy silane and methyl methacrylate are mixed, adding the mixture into the mixed solution of the isomeric tridecyl propenyl phenoxy polyether sodium sulfate, the allylundecyl polyether (10 EO) ammonium sulfate and the isomeric tridecyl propenyl phenoxy polyether ammonium sulfate under the stirring condition for dispersion to obtain a dispersion liquid;
Step 4, adding water and ammonium carbonate into a reactor, heating to 85 ℃ under stirring, adding 1wt% of the dispersion liquid and 20wt% of potassium persulfate into the reactor, and reacting to obtain seed liquid;
And 5, dissolving the residual potassium persulfate to obtain an initiator solution, then dripping the initiator solution and the residual dispersion into the seed solution for 260min, keeping the temperature at 86 ℃ for 150min after finishing, cooling to below 50 ℃, adding ammonia water, sodium hydroxide and potassium hydroxide to adjust the pH value to 7-8, adding a defoaming agent and a preservative, and uniformly stirring to obtain the weather-resistant emulsion.
II exterior wall coating
In order to better illustrate the characteristics of the weather-resistant emulsion provided by the embodiment of the invention, the weather-resistant emulsion described in the embodiments 1 to 15 is used as a base material to prepare the exterior wall coating. The specific components and amounts of the exterior wall coating are shown in tables 2-3.
Table 2:
TABLE 3 Table 3
2. Effect experiment
1. The weather-resistant emulsion prepared in examples 1-15 and the external wall coating prepared by the weather-resistant emulsion are subjected to performance detection, the parameters of the weather-resistant emulsion of the external wall are shown in table 4, the detection results of the emulsion are shown in table 5, and the basic physical properties and performance detection results of the coating are shown in tables 6 and 7:
Table 4:
Table 5:
table 6:
table 7:
2. Influence of raw material selection and proportion of emulsion on prepared exterior wall coating
In order to better illustrate the characteristics of the weather-resistant emulsion provided by the embodiment of the invention, the emulsion in the specific embodiment 4 is selected as an example, and the weather-resistant emulsion preparation method and the content of the external wall coating components are as test examples:
comparative example 1: and the exterior wall coating is prepared from common styrene-acrylic emulsion.
Table 8: test examples and comparative exception wall coating compositions
The effect properties of the prepared exterior wall coating are compared with the following tables 8-10:
Table 9:
table 10:
Table 11:
Note that: the emulsion mechanical stability, the calcium ion stability (0.5% CaCl 2 solution), the total residual monomer and the storage stability are detected, and the emulsion is detected according to the national standard GB/T20623-2006 detection method. The properties of the coating were determined according to the GB/T9755-2014 test method, wherein the water resistance test was 48h longer than the standard method.
As can be seen from tables 8-11, the emulsion of the present invention has good stability and good resistance to artificial weathering. As can be seen from tables 6 and 7, the weather-resistant monomer, the hydrophilic monomer, the dispersing agent, the wetting agent and the silane coupling agent are matched, so that powder in the coating can be stabilized, and the outer wall coating is not easy to change color; the weather-resistant monomer (such as cyclohexyl acrylate) is matched with the functional monomer (such as n-butyl methacrylate), so that the finally prepared exterior wall coating has excellent ageing resistance and cracking resistance, and the cohesion and toughness of a emulsion film can be improved due to the matching of the functional monomer and the weather-resistant monomer, and the use of a silane coupling agent can be reduced. The weather-resistant monomer, the functional monomer and other components are matched and combined, the raw material consumption proportion and the preparation method finally ensure that the ageing resistance of the paint prepared from the emulsion is outstanding, and particularly the artificial weather aging resistance is obviously superior to that of comparative example 1, the stain resistance is excellent, and the storage stability, the water resistance and the alkali resistance are also superior to those of comparative example 1. Excellent comprehensive performance and has very high application prospect in the field of exterior wall coating.
Claims (9)
1. The weather-resistant emulsion is characterized by comprising the following components in parts by weight: 400-500 parts of deionized water, 1-50 parts of reactive emulsifier, 0.5-50 parts of hydrophilic monomer, 0.5-100 parts of functional monomer, 145-400 parts of weather-resistant monomer, 10-450 parts of main monomer, 0.2-20 parts of silane coupling agent, 0.2-10 parts of initiator, 0.2-10 parts of pH buffering agent, 0.2-10 parts of defoaming agent, 0.01-1 part of preservative and 2-10 parts of pH regulator; the hydrophilic monomer is one or more than two of acrylic acid, methacrylic acid, acrylonitrile, isobornyl acrylate, maleic acid, glycidyl methacrylate, acrylamide and methacrylamide; the functional monomer is one or more than two of n-butyl methacrylate, tert-butyl acrylate and tert-butyl methacrylate; the weather-resistant monomer is one or more than two of cyclohexyl acrylate and 2-cyclohexyl methacrylate; the main monomer is one or more than two of styrene, methyl methacrylate, butyl acrylate, 2-isooctyl acrylate and 2-ethylhexyl acrylate.
2. A weather resistant emulsion according to claim 1, wherein: the reactive emulsifier is one or more than two of allyl ammonium alkyl sulfate, allyl alcohol ether sodium sulfate, allyl alkyl sulfosuccinic acid diester sodium, alkyl propenyl phenoxy polyether ammonium sulfate, 2-allyl ether-3-hydroxy propane-1-sodium sulfonate, acrylamide isopropyl sodium sulfonate, double bond-containing sulfosuccinic acid diester sodium, allyl isomerism tridecyl sodium sulfate and allyl undecyl sulfosuccinic acid amyl sodium.
3. A weather resistant emulsion according to claim 1, wherein: the silane coupling agent is one or more than two of vinyl triethoxysilane, vinyl trimethoxysilane and gamma- (methacryloyloxy) propyl trimethoxysilane.
4. A weather resistant emulsion according to claim 1, wherein: the initiator is one or more than two of potassium persulfate, ammonium persulfate and sodium persulfate.
5. A weather resistant emulsion according to claim 1, wherein: the pH buffering agent is one or more of sodium carbonate, sodium bicarbonate, ammonium carbonate and ammonium bicarbonate.
6. A weather resistant emulsion according to claim 1, wherein: the pH regulator is one or more of ammonia water, sodium hydroxide and potassium hydroxide.
7. A method of preparing a weatherable emulsion according to claim 1, comprising the steps of:
step 1, weighing the components according to the raw material ratio of claim 1;
step 2, dissolving a reactive emulsifier by adopting 200-240 parts of deionized water to obtain an emulsifier solution;
Step3, mixing a hydrophilic monomer, a functional monomer, a weather-resistant monomer and a silane coupling agent with a main monomer, and adding the mixture into the emulsifier solution under the stirring condition for dispersion to obtain a dispersion liquid;
Step 4, adding 200-240 parts of water and a pH buffering agent into a reactor, heating to 80-88 ℃ under stirring, adding 1-10wt% of the dispersion liquid and 10-30wt% of an initiator into the reactor, and reacting for 20min to obtain seed liquid;
and 5, dissolving the rest of the initiator by using the rest of deionized water to obtain an initiator solution, then dripping the initiator solution and the rest of the dispersion into the seed solution for 180-300min at 82-88 ℃, preserving the heat for 60-180min after dripping, cooling to below 50 ℃, adding the pH regulator, the defoamer and the preservative, and uniformly stirring to obtain the weather-resistant emulsion.
8. Use of the weather-resistant emulsion according to claim 1 in exterior wall coatings.
9. Use of the weather-resistant emulsion according to claim 8 in exterior wall coatings, characterized in that: the external wall coating comprises the following components in parts by weight: 10-25 parts of water, 1-5 parts of alcohol ester serving as a film forming auxiliary agent, 0.1-1 part of metal soap defoamer, 0.1-1 part of organosilicon defoamer, 0.1-1 part of sodium salt dispersant, 1-5 parts of propylene glycol, 0.1-0.5 part of wetting agent, 10-25 parts of rutile titanium dioxide, 10-30 parts of 700-mesh heavy calcium carbonate, 5-10 parts of 1250-mesh calcined kaolin, 0.1-1 part of hydroxyethyl cellulose, 0.1-1 part of ammonia water, 20-50 parts of weather-resistant emulsion according to claim 1, 0.1-1 part of kasong bactericide, 0.1-1 part of mineral oil defoamer and 0.1-1 part of hydrophobically modified alkali swelling thickener.
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