CN114736580A - Water-based release adhesive and preparation method and application thereof - Google Patents
Water-based release adhesive and preparation method and application thereof Download PDFInfo
- Publication number
- CN114736580A CN114736580A CN202210387116.XA CN202210387116A CN114736580A CN 114736580 A CN114736580 A CN 114736580A CN 202210387116 A CN202210387116 A CN 202210387116A CN 114736580 A CN114736580 A CN 114736580A
- Authority
- CN
- China
- Prior art keywords
- water
- parts
- aqueous
- modified
- waterborne
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000000853 adhesive Substances 0.000 title abstract description 10
- 230000001070 adhesive effect Effects 0.000 title abstract description 10
- 239000000839 emulsion Substances 0.000 claims abstract description 59
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 30
- 229920001225 polyester resin Polymers 0.000 claims abstract description 30
- 239000004645 polyester resin Substances 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- 239000004814 polyurethane Substances 0.000 claims abstract description 28
- 229920002635 polyurethane Polymers 0.000 claims abstract description 28
- 150000001252 acrylic acid derivatives Chemical class 0.000 claims abstract description 26
- 239000006184 cosolvent Substances 0.000 claims abstract description 22
- 239000008367 deionised water Substances 0.000 claims abstract description 17
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 17
- 229920000728 polyester Polymers 0.000 claims abstract description 8
- 239000003292 glue Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 239000004593 Epoxy Substances 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 13
- 239000000178 monomer Substances 0.000 claims description 12
- 230000009477 glass transition Effects 0.000 claims description 10
- -1 polysiloxane Polymers 0.000 claims description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 7
- ITCAUAYQCALGGV-XTICBAGASA-M sodium;(1r,4ar,4br,10ar)-1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylate Chemical compound [Na+].C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C([O-])=O ITCAUAYQCALGGV-XTICBAGASA-M 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 4
- 229920002799 BoPET Polymers 0.000 claims description 4
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 claims description 4
- 229920003180 amino resin Polymers 0.000 claims description 4
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 4
- 229960000502 poloxamer Drugs 0.000 claims description 4
- 229920001983 poloxamer Polymers 0.000 claims description 4
- 229920001228 polyisocyanate Polymers 0.000 claims description 4
- 239000005056 polyisocyanate Substances 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 4
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 3
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 claims description 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 claims description 3
- OIWOHHBRDFKZNC-UHFFFAOYSA-N cyclohexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1CCCCC1 OIWOHHBRDFKZNC-UHFFFAOYSA-N 0.000 claims description 3
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 3
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-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
- 239000010959 steel Substances 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- 125000005233 alkylalcohol group Chemical group 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000003995 emulsifying agent Substances 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 claims description 2
- 229920000554 ionomer Polymers 0.000 claims 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 claims 1
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 claims 1
- 230000001057 ionotropic effect Effects 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 20
- 238000000576 coating method Methods 0.000 abstract description 20
- 239000002390 adhesive tape Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007639 printing Methods 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 6
- 239000000976 ink Substances 0.000 description 23
- 229920006267 polyester film Polymers 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 14
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 10
- 239000000499 gel Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 239000001993 wax Substances 0.000 description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 description 8
- 239000005020 polyethylene terephthalate Substances 0.000 description 8
- 230000005587 bubbling Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 4
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 4
- 238000003851 corona treatment Methods 0.000 description 4
- 238000001723 curing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000032798 delamination Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 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 description 2
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 229920003270 Cymel® Polymers 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical group NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011527 polyurethane coating Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005269 aluminizing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000002761 deinking Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 210000004905 finger nail Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012184 mineral wax Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 210000003813 thumb Anatomy 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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- 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
- C09D5/002—Priming paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a water-based release agent and a preparation method and application thereof, wherein the water-based release agent comprises the following components in parts by weight: 10-30 parts of water-based polyester resin; 20-50 parts of water-based modified acrylic emulsion; 10-20 parts of waterborne polyurethane modified acrylate emulsion; 5-25 parts of a cosolvent; 10-40 parts of deionized water; 0.5-1.5 parts of an anti-sticking agent. The water-based release adhesive is a water-based coating, adopts water-based modified acrylic emulsion, water-based polyurethane modified acrylate emulsion and water-based acrylic modified polyester, and is added with an anti-sticking agent, a cross-linking agent and the like, so that the water-based release adhesive has excellent temperature resistance, flexibility and scratch resistance, good printing and decorating effects, high drying speed and good adhesion and stripping balance, and can be completely stripped by pulling a 3M strong adhesive tape.
Description
Technical Field
The invention belongs to the field of water-based paint, and particularly relates to a preparation method and application of a water-based release glue.
Background
The UV light-cured ink has high color saturation and high glossiness of printed products, and is increasingly widely used in high-grade product packaging. However, when printing is carried out on a polyester film, which is a non-absorbent substrate, the adhesion of UV light-cured ink is low, the deinking problem is easy to occur, the subsequent construction process is not facilitated to be carried out, and the complete stripping cannot be realized.
The polyester film is a transparent polyester film with different thicknesses obtained by melting and extruding polyethylene terephthalate high-molecular granules and various additives and then performing transverse and longitudinal stretching processing, because the polyester film has a series of characteristics of excellent transparency, flexibility and ductility, certain high and low temperature resistance and the like, the polyester film is widely applied to the fields of screen printing packaging, medical treatment, ink spraying and the like, particularly in recent years, along with the great improvement of national consumption capability and the continuous development of logistics industry, the demand for polyester films for packaging articles has increased, the outer surfaces of polyester films need printing inks, however, because the surface energy of the polyester film is low, the ink is difficult to be well adhered after being coated on the surface of the polyester film, and in the general processing process, it is necessary to treat the surface of the polyester film to improve the adhesion of various inks to the surface.
Polyester film surface treatments can be generally classified into two types: corona treatment and base coating treatment. The corona treatment has certain use limitation and timeliness, the adhesion performance of the polyester film surface after corona treatment to the thermosetting coating is improved generally, the adhesion to the UV type ink is not ideal, the active center on the film surface after corona treatment gradually disappears along with the lapse of the standing time of the polyester film, and the adhesion of the polyester film to the thermosetting coating is also gradually reduced; the primer treatment is a commonly used method for treating the surface of a PET (polyethylene terephthalate) film at present, a primer is mainly a polyurethane coating, and the polyurethane coating obtained by the primer treatment generally has the following problems on the market along with different choices of reaction monomers and reaction systems:
(1) the adhesiveness of the base coat and the polyester layer is difficult to reach the standard in a short time, and the concrete expression is that the polyester film coated with the base coat is subjected to standing curing, if the polyester film is not cured, after the UV ink layer is coated, the base coat is corroded by the ink layer due to the corrosion of the ink layer to the base coat, so that the base coat and the polyester film layer fall off, and the continuous production cannot be met in a short time.
(2) The longest subsequent construction time of the UV printing ink is short, and the concrete expression is as follows: the polyester film coated with the base coat needs to be temporarily placed for several days for production scheduling reasons before the ink layer is produced, and when the UV ink layer is coated again, the adhesion between the ink layer and the base coat cannot reach the standard.
(3) The polyester film of coating under coat need carry out comparatively strict management and control to storing the humiture in the storage process, and the concrete expression is: the polyester film coated with the primer layer is stored under normal temperature and normal humidity conditions, the primer layer can accelerate crosslinking and curing due to the influence of environmental temperature and humidity, and when the UV ink is coated again, the phenomenon that the adhesive force between the ink and the primer layer does not reach the standard and falls off can occur.
(4) The traditional PET base coating is a solvent-based product, uses a large amount of volatile organic solvent, easily generates a large amount of Volatile Organic Compounds (VOC), pollutes the environment and damages the health of process personnel; meanwhile, the organic solvent is easy to volatilize, and is extremely easy to burn in a high-temperature drying tunnel to cause production accidents.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the water-based release adhesive which can perfectly present the balance of adhesive force and strippable property, can well solve all the problems faced by the prior art, has excellent temperature resistance, flexibility and scratch resistance, has good anti-after-tack property at normal temperature, transparent film forming, good printing and decorating effects and good balance of adhesive force and stripping property, can be stored at normal temperature, and is safe to use and simple and convenient in process.
The invention also aims to provide a preparation method of the aqueous gel.
The above purpose of the invention is realized by the following technical scheme:
the water-based release glue comprises the following components in parts by mass:
10-30 parts of water-based polyester resin;
20-50 parts of water-based modified acrylic emulsion;
10-20 parts of waterborne polyurethane modified acrylate emulsion;
5-25 parts of a cosolvent;
10-40 parts of deionized water;
0.5-1.5 parts of an anti-sticking agent.
The aqueous polyester resin is preferably an aqueous acrylic modified polyester resin. The number average molecular weight Mn of the waterborne acrylic modified polyester resin adopted by the invention is 10000-20000, and the glass transition temperature Tg is 40-53 ℃. The higher the molecular weight Mn, the better the water resistance, but if the molecular weight exceeds 20000, the viscosity of the resin dispersion is too high, which affects the coating effect and the subsequent workability; preferably, the number average molecular weight Mn of the waterborne acrylic modified polyester is 15000-19000. The higher the glass transition temperature Tg of the waterborne acrylic modified polyester resin is, the faster the coating film drying speed is, and the stronger the solvent resistance is, and if the glass transition temperature is higher than 53 ℃, the film forming property of the resin can be affected, and the risk of tack-back is increased. Commercially available products can be used as the waterborne acrylic modified polyester resin, such as one or more of LS-WBR J2188W, LS-WBR J2189W and Spinose 575-4. In one embodiment, the amount of the aqueous acrylic modified polyester resin may be adjusted as needed within the range of 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 parts, etc., and combinations thereof.
The aqueous modified acrylic emulsion in the present invention is preferably an aqueous epoxy modified acrylic emulsion. More preferably, the waterborne epoxy modified acrylic emulsion is prepared by polymerizing monomers of hydroxyethyl methacrylate, methacrylic acid, cyclohexyl methacrylate and butyl acrylate in the presence of an emulsifier disproportionated sodium abietate and poloxamer, wherein crotonic acid modified epoxy resin E44 is used as a macromolecular modifier. In one embodiment, the amount of the aqueous epoxy modified acrylic emulsion can be adjusted as desired within the range of 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32, 34, 35, 37, 39, 40, 42, 44, 45, 46, 48, 49, 50 parts, and the like, and combinations thereof.
The aqueous polyurethane modified acrylate emulsion preferably adopts a polyurethane cross-linking agent obtained by blocking a lysine diisocyanate and an N, N-diethylethanolamine prepolymer by using beta-hydroxyethyl acrylate, and is obtained by polymerizing monomer ethyl acrylate, 2-ethyl methacrylate and the polyurethane cross-linking agent in the presence of octyl phenol polyoxyethylene ether and disproportionated sodium abietate. In one embodiment, the amount of the aqueous urethane-modified acrylate emulsion may be adjusted within the range of 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 parts, etc., and combinations thereof, as desired.
The invention adopts three specific water-based polymers to be matched for use, so that the bonding and separating performance, heat resistance and stability of the water-based release adhesive can reach extremely high levels under the condition of no organic solvent, and experiments show that the three conventional water-based polymers are mixed for use but are difficult to stabilize various effects at the same height.
The cosolvent in the invention is at least one of alkyl alcohol, alcohol ether, ketone or alcohol ether acetate; the cosolvent is preferably a lower boiling solvent, such as butyl cellosolve, isopropanol, absolute ethanol. If the boiling point is higher than 175 ℃, the solvent is not easy to volatilize, and the risk of sticking back is increased. Mixed co-solvents may also be used to lower the overall boiling point. In one embodiment, the amount of co-solvent can be adjusted as desired within the range of 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 parts, and the like, and combinations thereof.
The anti-sticking agent is at least one of polysiloxane, mineral oil and wax slurry. The anti-blocking agent is preferably a wax slurry, and commercially available products may be used as the wax slurry, including at least one of keim-additec aqueous wax slurry, Haima DeuWax W-2335A, and Wackel VOK-W2335A. In one embodiment, the amount of detackifier used may be adjusted as desired within the range of 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 parts, and the like, and combinations thereof.
Preferably, the coating also comprises 0.1-5 parts of a cross-linking agent, wherein the cross-linking agent plays a role in accelerating the curing of the coating and improving the strength of the coating and is mainly one or more of water-based polyisocyanate, a propylene oxide compound, an aziridine compound and amino resin. In one embodiment, the amount of the crosslinking agent can be adjusted as desired within the range of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0 parts, and the like, as well as combinations thereof.
In one embodiment, the amount of deionized water can be adjusted as desired within the range of 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32, 34, 35, 37, 39, 40 parts, etc., and combinations thereof.
The invention also discloses a preparation method of the aqueous release glue, which comprises the following steps:
(1) dissolving the water-based modified acrylic emulsion and the water-based polyurethane modified acrylate emulsion in a cosolvent, adding deionized water, and uniformly stirring at a dispersion speed of 300-500 r/min;
(2) and adding the waterborne acrylic modified polyester and the anti-sticking agent under the stirring state, or adding the waterborne acrylic modified polyester and the anti-sticking agent, controlling the dispersion speed to be 300-800 r/min, and stirring uniformly to obtain the waterborne release glue.
The invention also discloses an application of the waterborne release glue as a PET (polyethylene terephthalate) material primer, which comprises the following specific application methods:
and (3) coating the water-based release glue on the PET film by using a steel roller or a ceramic roller, and directly coating UV (ultraviolet) photocuring ink after continuous drying at the temperature of 85-95 ℃ for 10-15 s.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the water-based release agent is a water-based paint, adopts water-based modified acrylic emulsion, water-based polyurethane modified acrylate emulsion and water-based acrylic modified polyester, and is added with an anti-sticking agent, a cross-linking agent and the like, so that the water-based release agent has excellent temperature resistance, flexibility and scratch resistance, is not yellowed at high temperature, has good anti-after-tack property at normal temperature, is transparent in formed film, high in brightness, good in printing decoration effect, high in drying speed and good in adhesion and stripping balance, and can be completely stripped by being pulled by a 3M strong adhesive tape; meanwhile, a single-component product taking water as a dispersion medium does not contain heavy metal, is environment-friendly, non-toxic, free of combustion and explosion hazards, low in Volatile Organic Compound (VOC) content, capable of meeting the environmental protection requirements of European Union, and environment-friendly; the aqueous release glue has safe manufacturing and using processes, is suitable for industrial continuous production, improves the production efficiency, has longer storage period at normal temperature, and does not influence the using effect after short-term storage.
Detailed Description
The invention is further described below with reference to specific embodiments. The test methods used in the following examples are all conventional methods unless otherwise specified; the raw materials and reagents used are, unless otherwise specified, those commercially available from ordinary commercial sources.
Preparation example 1 aqueous epoxy-modified acrylic emulsion I
780g of epoxy resin E44, 1g of dimethylbenzylamine, 0.1g of hydroquinone and 90g of propylene glycol methyl ether are mixed, heated to 80-100 ℃, and then slowly added with a mixed solution of 202g of butenoic acid and 40g of propylene glycol methyl ether for reaction, after complete dropwise addition, the reaction is carried out at constant temperature for 2-3 hours, and when the acid value is less than 3mgKOH/g, the reaction is stopped, thus obtaining the modified epoxy resin E44.
360g of hydroxyethyl methacrylate, 350g of methacrylic acid, 300g of cyclohexyl methacrylate, 250g of butyl acrylate and 60g of azobisisobutyronitrile are mixed and stirred uniformly, and modified epoxy resin E51 is added to be dissolved completely to obtain a monomer mixture. And uniformly mixing 5g of disproportionated sodium abietate, 5g of poloxamer and 150g of water, slowly adding the monomer mixture, and continuously stirring at a high speed for 30 minutes after the monomer mixture is added to obtain the stable pre-emulsion.
Mixing 7g of disproportionated sodium abietate, 7g of poloxamer, 200g of water and 50g of dipropylene glycol butyl ether, heating to 80-100 ℃, adding 2g of ammonium persulfate, then adding 10% of pre-emulsion and 10g of ammonium persulfate, reacting at constant temperature for 30 minutes, slowly adding the rest pre-emulsion and 4g of benzoyl peroxide, reacting at constant temperature for 2-3 hours, cooling, filtering and discharging to prepare the water-based epoxy modified acrylic emulsion I.
Preparation example 2 aqueous polyurethane-modified acrylate emulsion I
226g of lysine diisocyanate and 450, 450g N, N-diethylethanolamine are mixed, stirred, heated to 60 ℃, vacuumized to-0.095 MPa, reacted for 30min, heated to 80 ℃ and reacted for 2h to obtain the polyurethane prepolymer. 145g of acrylic acid-beta-hydroxyethyl ester is added to carry out end capping on the polyurethane prepolymer, and the reaction lasts for 2 hours, so that the polyurethane crosslinking agent is obtained.
Mixing 12g of octyl phenol polyoxyethylene ether, 6g of disproportionated sodium abietate, 280g of water and 2.5g of sodium bicarbonate, then intensively stirring and fully dissolving to obtain emulsion, then uniformly stirring 360g of ethyl acrylate, 515g of 2-ethyl methacrylate and 17g of polyurethane crosslinking agent to obtain monomer solution, slowly adding the monomer solution and potassium persulfate solution (containing 5g of potassium persulfate and 130g of water) into the emulsion at 80 ℃, and stirring for reaction for 3 hours; and (3) cooling to room temperature after the reaction is finished, adjusting the pH to 7-8 by using ammonia water, filtering and discharging to obtain the waterborne polyurethane modified acrylate emulsion I.
Preparation example 3 aqueous urethane-modified acrylate emulsion II
125g of diphenylmethane diisocyanate and 225g of dehydrated polyether glycol DL-2000 are mixed, stirred and heated to 60 ℃, and then vacuumized to-0.095 MPa for reaction for 40min, and then heated to 80 ℃ for reaction for 2h to obtain the polyurethane prepolymer. 58g of acrylic acid-beta-hydroxyethyl ester is added to carry out end capping on the polyurethane prepolymer, and the reaction lasts for 2 hours, so as to obtain the polyurethane crosslinking agent.
Mixing 10.7g of octylphenol polyoxyethylene ether, 5.3g of lauryl sodium sulfate, 224g of deionized water and 1.3g of sodium bicarbonate, and then intensively stirring and fully dissolving to obtain an emulsion; then, uniformly stirring 24g of methyl methacrylate, 40g of butyl acrylate and 15.5g of polyurethane crosslinking agent to obtain a monomer solution; fully dissolving 3.2g of potassium persulfate by 100g of deionized water to obtain a potassium persulfate solution; heating to 78 ℃, slowly adding the monomer solution and the potassium persulfate solution into the reaction system, and stirring for reaction for 3 hours; and (3) cooling to room temperature after the reaction is finished, adjusting the pH to 7-8 by using ammonia water, filtering and discharging to obtain the product, namely the waterborne polyurethane modified acrylate emulsion II.
Preparation example 4 preparation of aqueous gel
The preparation method of the aqueous gel in the following examples adopts the following steps:
(1) dissolving the water-based modified acrylic emulsion and the water-based polyurethane modified acrylate emulsion in a cosolvent, adding deionized water, and uniformly stirring at a dispersion speed of 300-500 r/min;
(2) and adding the water-based acrylic acid modified polyester, the anti-sticking agent and the cross-linking agent under the stirring state, controlling the dispersion speed to be 300-800 r/min, and uniformly stirring to obtain the water-based release adhesive.
Example 1
As shown in Table 1, the water-based gel comprises the following components in parts by mass:
10 parts of waterborne acrylic modified polyester resin; 20 parts of waterborne epoxy modified acrylic emulsion I; 10 parts of waterborne polyurethane modified acrylate emulsion I; 5 parts of a cosolvent; 10 parts of deionized water; 0.5 part of an anti-sticking agent; 1 part of a crosslinking agent;
the waterborne acrylic modified polyester resin is LS-WBR J2188W with the number average molecular weight Mn of 15000-19000 and the glass transition temperature Tg of 40-53 ℃. The cosolvent is ethylene glycol butyl ether; the anti-sticking agent is keim-additec aqueous wax slurry; the cross-linking agent is waterborne aliphatic polyisocyanate JL-6201.
Example 2
As shown in Table 1, the water-based gel comprises the following components in parts by mass:
20 parts of waterborne acrylic modified polyester resin; 35 parts of waterborne epoxy modified acrylic emulsion I; 15 parts of waterborne polyurethane modified acrylate emulsion I; 15 parts of a cosolvent; 25 parts of deionized water; 1 part of an anti-sticking agent; 2.5 parts of a crosslinking agent;
the cosolvent is isopropanol; the anti-sticking agent is HAIMENDEWEX W-2335A wax slurry; the cross-linking agent is Shandong Xu morning chemical industry propylene oxide;
the waterborne acrylic modified polyester resin is LS-WBR J2189W, the number average molecular weight Mn is 15000-19000, and the glass transition temperature Tg is 40-53 ℃.
Example 3
As shown in Table 1, the water-based gel comprises the following components in parts by mass:
30 parts of waterborne acrylic modified polyester resin; 50 parts of waterborne epoxy modified acrylic emulsion I; 20 parts of waterborne polyurethane modified acrylate emulsion I; 25 parts of a cosolvent; 40 parts of deionized water; 1.5 parts of an anti-sticking agent; 5 parts of a crosslinking agent;
the cosolvent is absolute ethyl alcohol; the anti-sticking agent is wax slurry of Wacker VOK-W2335A; the cross-linking agent is CYMEL 1156 amino resin.
The waterborne acrylic modified polyester resin is Stace 575-4, the number average molecular weight Mn is 15000-19000, and the glass transition temperature Tg is 40-53 ℃.
Example 4
As shown in Table 1, the water-based gel comprises the following components in parts by mass:
20 parts of waterborne acrylic modified polyester resin; 35 parts of waterborne epoxy modified acrylic emulsion I; 15 parts of waterborne polyurethane modified acrylate emulsion I; 15 parts of a cosolvent; 25 parts of deionized water; 1 part of an anti-sticking agent; 2.5 parts of a crosslinking agent;
the cosolvent is ethylene glycol monobutyl ether, isopropanol and absolute ethyl alcohol; the anti-sticking agent is HAIMENDEWEX W-2335A wax slurry; the cross-linking agent is Shandong Xu morning chemical industry propylene oxide;
the waterborne acrylic modified polyester resin is LS-WBR J2189W, the number average molecular weight Mn is 15000-19000, and the glass transition temperature Tg is 40-53 ℃.
Example 5
As shown in Table 1, the water-based gel for shape separation comprises the following components in parts by mass:
20 parts of waterborne acrylic modified polyester resin; 35 parts of waterborne epoxy modified acrylic emulsion I; 15 parts of waterborne polyurethane modified acrylate emulsion I; 15 parts of a cosolvent; 25 parts of deionized water; 1 part of an anti-sticking agent; 2.5 parts of a crosslinking agent;
the cosolvent is isopropanol; the anti-sticking agent is keim-additec aqueous wax slurry, Haimande DeuWax W-2335A; the cross-linking agent is Shandong Xu morning chemical industry propylene oxide;
the waterborne acrylic modified polyester resin is LS-WBR J2189W, the number average molecular weight Mn is 15000-19000, and the glass transition temperature Tg is 40-53 ℃.
Example 6
As shown in Table 1, the water-based gel comprises the following components in parts by mass:
20 parts of waterborne acrylic modified polyester resin; 35 parts of waterborne epoxy modified acrylic emulsion I; 15 parts of waterborne polyurethane modified acrylate emulsion I; 15 parts of a cosolvent; 25 parts of deionized water; 1 part of an anti-sticking agent; 2.5 parts of a crosslinking agent;
the cosolvent is isopropanol; the anti-sticking agent is HAIMENDEWEX W-2335A wax slurry; the cross-linking agent is water-based aliphatic polyisocyanate JL-6201, Shandong Asahi chemical industry propylene oxide and CYMEL 1156 amino resin;
the waterborne acrylic modified polyester resin is LS-WBR J2189W, the number average molecular weight Mn is 15000-19000, and the glass transition temperature Tg is 40-53 ℃.
Comparative example 1
As shown in table 2, the procedure of example 2 was repeated except that the aqueous acrylic modified polyester resin was replaced with an aqueous saturated polyester resin, nylon W6081.
Comparative example 2
As shown in Table 2, the same procedure as in example 2 was repeated except that the acrylic emulsion I modified without waterborne epoxy was changed to 37.5 parts of waterborne acrylic modified polyester resin and 32.5 parts of waterborne urethane modified acrylate emulsion I.
Comparative example 3
As shown in Table 2, the procedure was carried out in the same manner as in example 2 except that the aqueous urethane-modified acrylate emulsion I was removed, the aqueous acrylic acid-modified polyester resin was changed to 27.5 parts, and the aqueous epoxy-modified acrylic emulsion I was changed to 42.5 parts.
Comparative example 4
As shown in Table 2, the antiblocking agent was removed and the amount of deionized water was increased to 26 parts, as in example 2.
Comparative example 5
As shown in table 2, the crosslinker was removed and the deionized water was increased to 27.5 parts, as in example 2.
Comparative example 6
As shown in Table 2, the procedure of example 2 was repeated except that the aqueous urethane-modified acrylate emulsion I was changed to the aqueous urethane-modified acrylate emulsion II.
TABLE 1
TABLE 2
The specific applications of the aqueous release gels of examples 1-5 and comparative examples 1-6 are as follows:
coating the obtained water-based release glue on a PET film by using a 200-mesh steel roller, continuously drying at the temperature of 80-105 ℃ for 13-15 s, coating UV (ultraviolet) light-cured ink, curing by mould pressing, aluminizing, rolling and coating water-based composite glue to be compounded with white cardboard, finally stripping the PET film, and printing offset printing ink or screen printing ink on a bottom coating.
TABLE 3
| Examples of the invention | Heat resistance | Adhesive tape test | Scratch resistance | Storage period at normal temperature |
| Example 1 | OK | OK | 0 | OK |
| Example 2 | OK | OK | 0 | OK |
| Example 3 | OK | OK | 0 | OK |
| Example 4 | OK | OK | 0 | OK |
| Example 5 | OK | OK | 0 | OK |
| Comparative example 1 | Crinkled skin, bubbling and discoloring | NG | 1 | With skinning, delamination and sedimentation |
| Comparative example 2 | Crinkled skin, bubbling and discoloring | NG | 1 | OK |
| Comparative example 3 | Crinkled skin, bubbling and discoloring | NG | 0 | With skinning, delamination and sedimentation |
| Comparative example 4 | Crinkled skin, bubbling and discoloring | NG | 1 | NG |
| Comparative example 5 | Crinkled skin, bubbling and discoloring | NG | 1 | NG |
| Comparative example 6 | Crinkled skin, bubbling and discoloring | NG | 0 | With skinning, delamination and sedimentation |
Heat resistance: referring to the national standard GB/T1735 'determination of heat resistance of paint film', the time for which the coating resists 200 ℃ and does not have the phenomena of wrinkling, bubbling, cracking, discoloration and the like is adopted for representation.
Scratch resistance: the fingernail scratch has no obvious trace, is good at the 0 grade and has trace, is poor at the 1 grade.
Storage stability: the product is stored for 30 days at the temperature of 20-25 ℃ without the phenomena of skinning, layering, sedimentation and the like.
The adhesive tape test was performed on the samples obtained in examples 1 to 5 and comparative examples 1 to 6, and the specific method was as follows:
the sample is flatly placed on a glass plate, the bottom coating is upward, a 3M600 adhesive tape is pasted on the bottom coating, the adhesive tape is pressed by a thumb and evenly pasted, then the adhesive tape is quickly peeled off by a 160-180 DEG method, and the qualified product is obtained when the surface energy completely drops.
After testing, after the water-based PET prime coat paint of the examples 1-6 is coated, the UV light-cured ink is pulled by the 3M adhesive tape for the adhesive tape test to slightly fall off along with the prime coat; after the aqueous release adhesive of comparative examples 1 to 6 was applied, the UV curable ink was pulled by the 3M adhesive tape for tape test and was largely peeled off with the primer layer; when the waterborne release glue is not pre-coated, the UV light-cured ink printed on the PET can be easily torn off by using a 3M adhesive tape, and the next construction cannot be carried out. When the waterborne saturated polyester resin is used for replacing the waterborne acrylic modified polyester resin in the scheme, various performances are greatly reduced; when the waterborne epoxy modified acrylic emulsion is not used, the normal-temperature storage performance can reach a better degree, but the other performances are not good; the scratch resistance can be improved without using the aqueous polyurethane modified acrylate emulsion or using the conventional aqueous polyurethane modified acrylate emulsion, but other properties are not good; the anti-sticking agent and the cross-linking agent in the scheme can play a role in improving the effect of the whole formula.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the foregoing embodiments are still possible, or some technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The water-based release glue is characterized by comprising the following components in parts by mass:
10-30 parts of water-based polyester resin;
20-50 parts of water-based modified acrylic emulsion;
10-20 parts of waterborne polyurethane modified acrylate emulsion;
5-25 parts of a cosolvent;
10-40 parts of deionized water;
0.5-1.5 parts of an anti-sticking agent.
2. The aqueous gel of claim 1, wherein the aqueous polyester resin is an aqueous acrylic modified polyester resin; the waterborne modified acrylic emulsion is waterborne epoxy modified acrylic emulsion.
3. The aqueous ionomer gel as claimed in claim 2, wherein the number average molecular weight Mn of the aqueous acrylic modified polyester resin is 10000-20000, the glass transition temperature Tg is 40-53 ℃, and preferably one or more of LS-WBR J2188W, LS-WBR J2189W, and the span 575-4 are used.
4. The aqueous ionomer gel according to claim 2, wherein the aqueous epoxy modified acrylic emulsion is obtained by polymerizing monomers of hydroxyethyl methacrylate, methacrylic acid, cyclohexyl methacrylate and butyl acrylate in the presence of an emulsifier disproportionated sodium abietate and poloxamer, wherein crotonic acid modified epoxy resin E44 is used as a macromolecular modifier.
5. The aqueous gel of claim 1, wherein the aqueous polyurethane modified acrylate emulsion is a polyurethane cross-linking agent obtained by capping a prepolymer of lysine diisocyanate and N, N-diethylethanolamine with beta-hydroxyethyl acrylate, and is obtained by polymerizing a monomer of ethyl acrylate, 2-ethyl methacrylate and a polyurethane cross-linking agent in the presence of octylphenol polyoxyethylene ether and sodium disproportionated abietate.
6. The aqueous ionotropic glue of claim 1, wherein the co-solvent is at least one of an alkyl alcohol, an alcohol ether, a ketone, or an alcohol ether acetate.
7. The aqueous release gum according to claim 1, wherein the release agent is at least one of a polysiloxane, a mineral oil, a wax slurry, preferably a wax slurry comprising a keim-additec aqueous wax slurry, a haimindestue DeuWax
At least one of W-2335A and Wolkel VOK-W2335A.
8. The water-based release glue according to claim 1, further comprising 0.1-5 parts of a cross-linking agent, wherein the cross-linking agent is one or more of water-based polyisocyanate, a propylene oxide compound, an aziridine compound and an amino resin.
9. A method for preparing the aqueous gel of claim 1, comprising the steps of:
(1) dissolving the water-based modified acrylic emulsion and the water-based polyurethane modified acrylate emulsion in a cosolvent, adding deionized water, and uniformly stirring at a dispersion speed of 300-500 r/min;
(2) and adding the waterborne acrylic modified polyester and the anti-sticking agent under the stirring state, or adding the cross-linking agent, controlling the dispersion speed to be 300-800 r/min, and uniformly stirring to obtain the waterborne release glue.
10. The application of the aqueous release glue of claim 1, wherein the aqueous release glue is coated on a PET film by a steel roller or a ceramic roller, and is directly coated with UV light-curable ink after being continuously dried at the temperature of 85-95 ℃ for 10-15 s.
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| CN115477886A (en) * | 2022-08-03 | 2022-12-16 | 广东邦固化学科技有限公司 | Water-based folding-resistant high-brightness composite coating and preparation method thereof |
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| CN113088165A (en) * | 2021-03-30 | 2021-07-09 | 安徽国风塑业股份有限公司 | Online coating water-based primer coating and polyester film containing primer |
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| CN115477886A (en) * | 2022-08-03 | 2022-12-16 | 广东邦固化学科技有限公司 | Water-based folding-resistant high-brightness composite coating and preparation method thereof |
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