CN114702922A - Glue for battery protective film adhesive tape and preparation method thereof - Google Patents
Glue for battery protective film adhesive tape and preparation method thereof Download PDFInfo
- Publication number
- CN114702922A CN114702922A CN202210319661.5A CN202210319661A CN114702922A CN 114702922 A CN114702922 A CN 114702922A CN 202210319661 A CN202210319661 A CN 202210319661A CN 114702922 A CN114702922 A CN 114702922A
- Authority
- CN
- China
- Prior art keywords
- glue
- acrylate monomer
- acrylate
- adhesive tape
- protective film
- 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.)
- Granted
Links
- 239000003292 glue Substances 0.000 title claims abstract description 143
- 230000001681 protective effect Effects 0.000 title claims abstract description 35
- 239000002390 adhesive tape Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims description 47
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 78
- 239000000178 monomer Substances 0.000 claims abstract description 74
- 239000011259 mixed solution Substances 0.000 claims abstract description 23
- 239000012948 isocyanate Substances 0.000 claims abstract description 15
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 13
- 239000003999 initiator Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 7
- 230000009477 glass transition Effects 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 15
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims description 6
- 239000003085 diluting agent Substances 0.000 claims description 6
- 238000003848 UV Light-Curing Methods 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 5
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 4
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 4
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 4
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 4
- VPASWAQPISSKJP-UHFFFAOYSA-N ethyl prop-2-enoate;isocyanic acid Chemical compound N=C=O.CCOC(=O)C=C VPASWAQPISSKJP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 4
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 3
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 claims description 3
- 238000006482 condensation reaction Methods 0.000 claims description 3
- WDQMWEYDKDCEHT-UHFFFAOYSA-N 2-ethylhexyl 2-methylprop-2-enoate Chemical compound CCCCC(CC)COC(=O)C(C)=C WDQMWEYDKDCEHT-UHFFFAOYSA-N 0.000 claims description 2
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 2
- 238000001723 curing Methods 0.000 claims description 2
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 44
- 238000009472 formulation Methods 0.000 description 40
- 230000000052 comparative effect Effects 0.000 description 22
- 238000012360 testing method Methods 0.000 description 8
- 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 6
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000002313 adhesive film Substances 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 6
- 229920006255 plastic film Polymers 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000000016 photochemical curing Methods 0.000 description 3
- RXYPXQSKLGGKOL-UHFFFAOYSA-N 1,4-dimethylpiperazine Chemical compound CN1CCN(C)CC1 RXYPXQSKLGGKOL-UHFFFAOYSA-N 0.000 description 2
- LEJBBGNFPAFPKQ-UHFFFAOYSA-N 2-(2-prop-2-enoyloxyethoxy)ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOC(=O)C=C LEJBBGNFPAFPKQ-UHFFFAOYSA-N 0.000 description 2
- INQDDHNZXOAFFD-UHFFFAOYSA-N 2-[2-(2-prop-2-enoyloxyethoxy)ethoxy]ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOCCOC(=O)C=C INQDDHNZXOAFFD-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- NWVVVBRKAWDGAB-UHFFFAOYSA-N p-methoxyphenol Chemical compound COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 description 2
- FSDNTQSJGHSJBG-UHFFFAOYSA-N piperidine-4-carbonitrile Chemical compound N#CC1CCNCC1 FSDNTQSJGHSJBG-UHFFFAOYSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 2
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 2
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 2
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 1
- WXPWZZHELZEVPO-UHFFFAOYSA-N (4-methylphenyl)-phenylmethanone Chemical compound C1=CC(C)=CC=C1C(=O)C1=CC=CC=C1 WXPWZZHELZEVPO-UHFFFAOYSA-N 0.000 description 1
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 description 1
- YIKSHDNOAYSSPX-UHFFFAOYSA-N 1-propan-2-ylthioxanthen-9-one Chemical compound S1C2=CC=CC=C2C(=O)C2=C1C=CC=C2C(C)C YIKSHDNOAYSSPX-UHFFFAOYSA-N 0.000 description 1
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 description 1
- ZCDADJXRUCOCJE-UHFFFAOYSA-N 2-chlorothioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(Cl)=CC=C3SC2=C1 ZCDADJXRUCOCJE-UHFFFAOYSA-N 0.000 description 1
- XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 description 1
- 239000012957 2-hydroxy-2-methyl-1-phenylpropanone Substances 0.000 description 1
- NNAHKQUHXJHBIV-UHFFFAOYSA-N 2-methyl-1-(4-methylthiophen-2-yl)-2-morpholin-4-ylpropan-1-one Chemical compound CC1=CSC(C(=O)C(C)(C)N2CCOCC2)=C1 NNAHKQUHXJHBIV-UHFFFAOYSA-N 0.000 description 1
- JJRDRFZYKKFYMO-UHFFFAOYSA-N 2-methyl-2-(2-methylbutan-2-ylperoxy)butane Chemical compound CCC(C)(C)OOC(C)(C)CC JJRDRFZYKKFYMO-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 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
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 1
- BDAHDQGVJHDLHQ-UHFFFAOYSA-N [2-(1-hydroxycyclohexyl)phenyl]-phenylmethanone Chemical compound C=1C=CC=C(C(=O)C=2C=CC=CC=2)C=1C1(O)CCCCC1 BDAHDQGVJHDLHQ-UHFFFAOYSA-N 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- YQHLDYVWEZKEOX-UHFFFAOYSA-N cumene hydroperoxide Chemical compound OOC(C)(C)C1=CC=CC=C1 YQHLDYVWEZKEOX-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- BLCKNMAZFRMCJJ-UHFFFAOYSA-N cyclohexyl cyclohexyloxycarbonyloxy carbonate Chemical compound C1CCCCC1OC(=O)OOC(=O)OC1CCCCC1 BLCKNMAZFRMCJJ-UHFFFAOYSA-N 0.000 description 1
- 229960002887 deanol Drugs 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 description 1
- 239000012972 dimethylethanolamine Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- BFYJDHRWCNNYJQ-UHFFFAOYSA-N oxo-(3-oxo-3-phenylpropoxy)-(2,4,6-trimethylphenyl)phosphanium Chemical compound CC1=CC(C)=CC(C)=C1[P+](=O)OCCC(=O)C1=CC=CC=C1 BFYJDHRWCNNYJQ-UHFFFAOYSA-N 0.000 description 1
- 238000007719 peel strength test Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- HPAFOABSQZMTHE-UHFFFAOYSA-N phenyl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)C1=CC=CC=C1 HPAFOABSQZMTHE-UHFFFAOYSA-N 0.000 description 1
- 229940096992 potassium oleate Drugs 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- MLICVSDCCDDWMD-KVVVOXFISA-M potassium;(z)-octadec-9-enoate Chemical compound [K+].CCCCCCCC\C=C/CCCCCCCC([O-])=O MLICVSDCCDDWMD-KVVVOXFISA-M 0.000 description 1
- SXWZSWLBMCNOPC-UHFFFAOYSA-M potassium;6-methylheptanoate Chemical compound [K+].CC(C)CCCCC([O-])=O SXWZSWLBMCNOPC-UHFFFAOYSA-M 0.000 description 1
- BWJUFXUULUEGMA-UHFFFAOYSA-N propan-2-yl propan-2-yloxycarbonyloxy carbonate Chemical compound CC(C)OC(=O)OOC(=O)OC(C)C BWJUFXUULUEGMA-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- SWAXTRYEYUTSAP-UHFFFAOYSA-N tert-butyl ethaneperoxoate Chemical compound CC(=O)OOC(C)(C)C SWAXTRYEYUTSAP-UHFFFAOYSA-N 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/02—Wrappers or flexible covers
-
- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
- C09J7/243—Ethylene or propylene polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/33—Applications of adhesives in processes or use of adhesives in the form of films or foils for batteries or fuel cells
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/10—Presence of homo or copolymers of propene
- C09J2423/106—Presence of homo or copolymers of propene in the substrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides glue for a battery protective film adhesive tape, which comprises the following components in parts by weight: 66-110 parts of acrylate monomer, 1-10 parts of isocyanate monomer and 0.05-2 parts of thermal initiator; the acrylate monomer comprises a non-functional acrylate monomer and a hydroxyl-containing acrylate monomer, wherein the non-functional acrylate monomer is acrylate with the glass transition temperature of-70 ℃ to-10 ℃. The mixed solution formed by mixing the acrylate monomer and the thermal initiator is subjected to a step-by-step feeding polymerization mode, so that the molecular weight distribution of the glue prepared by using the acrylate monomer is effectively and accurately regulated, the glue film prepared by the glue has the stripping force in a proper size range, and the residual glue is not easy to generate. Meanwhile, the invention does not contain solvent, thus solving the problem of environmental protection.
Description
Technical Field
The invention belongs to the technical field of battery protective film adhesive tapes, and particularly relates to glue for a battery protective film adhesive tape and a preparation method thereof.
Background
With the development of the intelligent electronic product industry, batteries providing energy sources for electronic products have also been developed significantly. In order to avoid the pollution and damage of the battery during the production, assembly and transportation, a protective film is usually required to cover the surface of the battery. The common battery protective film adhesive tape is a pressure-sensitive adhesive, which is a kind of pressure-sensitive adhesive and can be adhered to the surface of a base material under the condition of applying proper pressure.
The traditional solvent-type pressure-sensitive adhesive mostly adopts acrylate glue, and the acrylate glue needs a large amount of solvent to participate in the preparation of the acrylate glue, thereby causing serious pollution to the environment. And the peeling force of the acrylate glue is low, and the problems of difficult film tearing, easy glue residue and the like exist after hot pressing, so that the use of the protective film adhesive tape is seriously influenced.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the glue for the battery protective film adhesive tape and the preparation method thereof, so as to realize the regulation and control of the peeling force range of the glue for the protective film adhesive tape and solve the problems of easy peeling and difficult film tearing of the glue for the protective film adhesive tape.
According to a first aspect of the invention, the glue for the battery protective film adhesive tape is provided, and comprises the following raw materials in parts by weight:
66-110 parts of acrylate monomer, 1-10 parts of isocyanate monomer and 0.05-2 parts of thermal initiator; the acrylate monomer comprises a non-functional acrylate monomer and a hydroxyl-containing acrylate monomer, wherein the non-functional acrylate monomer is acrylate with the glass transition temperature of-70 ℃ to-10 ℃; the proportion of the non-functional acrylate monomer in the acrylate monomer is not less than 83 wt%, and the proportion of the hydroxyl-containing acrylate monomer in the acrylate monomer is not less than 1 wt%.
The glue for the battery protective film adhesive tape provided by the invention has stable and controllable molecular weight distribution, so that the formed adhesive film has stripping in a proper size rangeAnd meanwhile, the residual glue is not easy to exist, and the problems that the existing protective film formed by the existing acrylate glue is easy to glue and difficult to tear are solved. The non-functional acrylate monomer selected in the scheme is used as the main component of the acrylate monomer and has lower TgThe macromolecular substances contained in the prepared glue have proper molecular weight, so that the glue film formed by the glue has good flexibility and cohesiveness. In the scheme, the hydroxyl-containing acrylate monomer has a hydroxyl functional group, and a double bond structure is introduced into the glue by the condensation reaction of the hydroxyl functional group of the hydroxyl-containing acrylate monomer and an isocyanate group of an isocyanate monomer, so that a structural basis is provided for the subsequent photo-curing of the glue to form a glue film. In addition, the glue for the battery protective film adhesive tape provided by the invention does not need to be added with an organic solvent, and under the condition of no solvent, the glue for the battery protective film adhesive tape provided by the invention also has good spreading performance and bonding performance, so that the safety problem and the environmental pollution problem caused by using a large amount of organic solvent are avoided.
Preferably, the non-functional acrylate monomer is selected from at least one of methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, lauryl acrylate, butyl methacrylate, 2-ethylhexyl methacrylate.
Preferably, the hydroxyl-containing acrylate monomer is selected from at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate.
Preferably, the isocyanate monomer is isocyanate ethyl acrylate.
Preferably, the thermal initiator is at least one selected from the group consisting of potassium persulfate, cumyl hydroperoxide, t-butyl hydroperoxide, dicumyl peroxide, di-t-butyl peroxide, di-t-amyl peroxide, dibenzoyl peroxide, dilauroyl peroxide, t-butyl peroxyacetate, t-butyl peroxybenzoate, dicyclohexyl peroxydicarbonate, diisopropyl peroxydicarbonate, azobisisobutyronitrile, and azobisisoheptonitrile.
Preferably, the acrylate monomer further comprises a functional acrylate monomer, the ratio of the functional acrylate monomer in the acrylate monomer is not less than 0.1 wt% calculated by mass percent, and the functional acrylate monomer contains a polar group. The polar group provided by the functional acrylate monomer can enhance cohesive energy among macromolecules, thereby effectively improving the peel strength value and permanent adhesion of the prepared glue.
Preferably, the functional acrylate monomer is selected from at least one of acrylic acid, methacrylic acid, glycidyl acrylate, and glycidyl methacrylate.
Preferably, the non-functional acrylate monomer, the hydroxyl group-containing acrylate monomer, and the functional acrylate monomer all belong to acrylate compounds. The raw materials have similar material structures and carbon atoms, so that the intermiscibility of the components of the raw materials is greatly improved.
According to a second aspect of the invention, a preparation method of the glue for the battery protective film adhesive tape is provided, which comprises the following steps:
S1.
s1.1, mixing an acrylate monomer and a thermal initiator to form a mixed solution;
s1.2, heating part of the mixed solution to 60-90 ℃, and carrying out heat preservation reaction;
s1.3, adding the rest mixed solution into the reaction system, and continuing to preserve heat to obtain an oligomer A, wherein the oligomer A is an acrylate prepolymer;
s2, removing moisture from the oligomer A, and then adding an isocyanate monomer into the oligomer A to enable the oligomer A and the isocyanate monomer to perform condensation reaction to obtain a prepolymer B, wherein the prepolymer B is the glue for the battery protective film adhesive tape.
In the preparation method S1, a mode of distributed feeding polymerization is adopted for a mixed solution formed by mixing an acrylate monomer and a thermal initiator, so as to prevent implosion from occurring in the process of preparing the oligomer a, thereby achieving the purpose of controlling the molecular weight of the formed oligomer a. Further, prepolymer B obtained by modifying oligomer A with isocyanate in S2 also has a controllable molecular weight. In addition, the oligomer A is subjected to moisture removal operation before being modified by the isocyanate, so that the side reaction of the isocyanate and water is avoided, and the full reaction of the oligomer A and the isocyanate is ensured. The glue prepared by the preparation method has more reasonable molecular weight and distribution of materials, so that a glue film formed by the glue has stripping force in a proper size range, and residual glue is not easy to generate. In addition, in the preparation process, the use of an organic solvent is not involved, so that the safety of the process of preparing the glue is higher, and the glue is more in line with the requirements of green and environmental protection.
Preferably, in S1.2, the amount of the mixed solution taken is 10-20 wt% of the total amount of the mixed solution.
Preferably, in S1.2, the reaction time is 0.5 to 2 hours.
Preferably, in S1.3, the reaction time is 2 to 6 hours.
Preferably, in S1.3, the operation of adding the rest of the mixed solution is in a dropwise manner, and the dropwise adding time is not less than 1.5 hours. And the polymerization rate of the acrylate monomer is further reduced by dripping the residual mixed solution, so that the molecular weight controllability of the oligomer A prepared by using the acrylate monomer is higher.
Preferably, the specific operation of S1 includes: mixing an acrylate monomer and a first initiator to form the mixed solution, heating part of the mixed solution to 60-90 ℃, carrying out heat preservation reaction for 0.5-2 hours, then dropwise adding the rest of the mixed solution, and continuing the heat preservation reaction for 2-6 hours after the dropwise adding is finished.
Preferably, the step of adding 0.01 to 0.1 part of catalyst and 0.01 to 0.2 part of polymerization inhibitor into the S2 is included according to the parts by weight.
Preferably, heating the oligomer A, evacuating and removing water, then keeping the temperature of the oligomer A within the range of 65-70 ℃, adding an isocyanate monomer, and continuing the heat preservation reaction for 1.5-3 hours; and then adding a catalyst, continuing to perform heat preservation reaction for 3-6 hours, and then adding a polymerization inhibitor to obtain a prepolymer B.
Preferably, the catalyst is selected from at least one of triethylenediamine, bis (dimethylaminoethyl) ether, dimethylethanolamine, N-methylmorpholine, 2-dimorpholinodiethyl ether, 1, 4-dimethylpiperazine, N-dimethylbenzylamine, dibutyltin dilaurate, stannous octoate, potassium isooctanoate, potassium oleate, tetrabutyl titanate, tetraisopropyl titanate.
Preferably, the polymerization inhibitor is at least one selected from p-hydroxyanisole, hydroquinone, p-methoxyphenol and 2, 6-di-tert-butylphenol.
According to a third aspect of the invention, an application of the glue for the battery protective film adhesive tape in preparation of UV curing glue is provided, wherein 100 parts by weight of the glue for the battery protective film adhesive tape is mixed with 0.5-5 parts by weight of a photoinitiator and 3-20 parts by weight of an active diluent to form UV curing glue, and the UV curing glue is irradiated by ultraviolet light to form a formed adhesive film.
Preferably, the photoinitiator is selected from at least one of 2-hydroxy-2-methyl-1-phenylpropanone, 1-hydroxy-cyclohexylbenzophenone, 2-hydroxy-2-methyl-p-hydroxyethyl etherylphenylacetone-1, 2-methyl-1- (4-methylthiophenyl) -2-morpholinyl-1-propanone, 2,4, 6-trimethylbenzoyl-ethoxy-phenylphosphine oxide, 2,4, 6-trimethylbenzophenone, 4-methylbenzophenone, isopropylthioxanthone, 2-chlorothioxanthone.
Preferably, the reactive diluent is an acrylic resin. The reactive diluent has lower viscosity, and can reduce the viscosity of a system. Meanwhile, the reactive diluent has active groups, which is beneficial to improving the adhesive force to the base material.
Preferably, the reactive diluent is selected from at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, glycidyl methacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1
Table 1 shows the formulations used to prepare the glues for this example.
TABLE 1 formulation of the glue
The raw materials required for the formulation were prepared according to table 1 above, and the glue in this example was prepared as follows:
S1.
s1.1, mixing 2-ethylhexyl acrylate, hydroxypropyl acrylate, acrylic acid and azobisisobutyronitrile, and uniformly stirring to form a mixed solution;
s1.2, taking 15% of the mixed solution in a four-neck flask provided with a stirrer, a reflux condenser tube, a thermometer and a dropping funnel, heating to 78 ℃, and carrying out heat preservation reaction for 1 hour;
s1.3, dropwise adding the rest of mixed solution into the reaction system within 4 hours, and after dropwise adding, continuing to perform heat preservation reaction for 3 hours to obtain an oligomer A, wherein the oligomer A is an acrylate prepolymer.
S2, heating the oligomer A to 100 ℃, and evacuating to remove water for 1.5 hours. And then cooling to 68 ℃, adding isocyanate ethyl acrylate into the oligomer A, reacting for 2 hours, adding dibutyltin dilaurate into the reaction system, continuing to react for 4 hours, adding hydroquinone, cooling to about 50 ℃, and taking out of the kettle to obtain a prepolymer B, namely the final glue.
In this example, 5 portions of glue were repeatedly prepared by the same above-mentioned preparation method, and labeled as sample 1-1, sample 1-2, sample 1-3, sample 1-4, and sample 1-5, respectively.
Example 2
Table 2 shows the formulations used to prepare the glues for this example.
Table 2 formulation of glue.
The glue of this example was prepared with reference to the glue preparation method provided in example 1: the raw materials for preparing the formulation according to table 2 above were replaced by methacrylic acid (the functional acrylate monomer used in the formulation) instead of acrylic acid used in S1.1 in the glue preparation method provided in example 1, except that the other specific operations and parameter settings were strictly consistent with the glue preparation method provided in example 1.
Example 3
Table 3 shows the formulations used to prepare the glues for this example.
TABLE 3 formulation of the glue
The glue of this example was prepared with reference to the glue preparation method provided in example 1: the glue preparation method provided in example 1 was strictly identical to the glue preparation method provided in example 1 except that the hydroxypropyl acrylate used in S1.1 was replaced by hydroxyethyl methacrylate (the hydroxyl-containing acrylate monomer used in the present formulation) according to the raw materials required for the preparation of the formulation in table 3 above.
Example 4
Table 4 shows the formulations used to prepare the glues for this example.
Table 4 formulation of glue.
The glue of this example was prepared with reference to the glue preparation method provided in example 1: the raw materials required for the preparation of the formulation according to table 4 above were replaced by stannous octoate (the catalyst used in the formulation) instead of dibutyltin dilaurate used in S2 in the glue preparation method provided in example 1, except that other specific operations and parameter settings were strictly consistent with the glue preparation method provided in example 1.
Example 5
Table 5 shows the formulations used to prepare the glues for this example.
TABLE 5 formulation of glue
The glue of this example was prepared with reference to the glue preparation method provided in example 1: the preparation of the formulation according to table 5 above requires the raw materials to replace 2-ethylhexyl acrylate used in S1.1 of the glue preparation method provided in example 1 with a mixture of 2-ethylhexyl acrylate and lauryl acrylate (non-functional acrylate monomers used in the formulation), except that the other specific operations and parameter settings are strictly consistent with the glue preparation method provided in example 1.
Example 6
Table 6 shows the formulation used to prepare the glue for this example.
TABLE 6 formulation of glue
The glue of this example was prepared with reference to the glue preparation method provided in example 1: the raw materials for the preparation of the formulation according to table 6 above were replaced by 2-ethylhexyl acrylate used in S1.1 of the glue preparation method provided in example 1 with a mixture of 2-ethylhexyl acrylate and lauryl acrylate (non-functional acrylate monomers used in the present formulation), except that the other specific operations and parameter settings were strictly consistent with the glue preparation method provided in example 1.
Example 7
Table 7 shows the formulations used to prepare the glues for this example.
TABLE 7 formulation of the glue
The glue of this example was prepared with reference to the glue preparation method provided in example 1: the glue preparation process provided in example 1 was strictly identical to the glue preparation process provided in example 1 except that the 2-ethylhexyl acrylate used in S1.1 was replaced by a mixture of 2-ethylhexyl acrylate and butyl acrylate (non-functional acrylate monomers used in the present formulation) in accordance with the raw materials required for the formulation prepared in table 7 above.
Example 8
Table 8 shows the formulations used to prepare the glues for this example.
TABLE 8 formulation of the glues
The glue of this example was prepared with reference to the glue preparation method provided in example 1: the glue preparation method provided in example 1 was strictly identical to the glue preparation method provided in example 1 except that the 2-ethylhexyl acrylate used in S1.1 was replaced by a mixture of 2-ethylhexyl acrylate and butyl acrylate (the non-functional acrylate monomer used in the present formulation) according to the raw materials required for the preparation of the formulation in table 8 above.
Comparative example 1
Table 9 shows the formulations used to prepare the glues for this comparative example.
Table 9 formulation of glue
The raw materials required for the formulation were prepared according to table 9 above, and the glue in this comparative example was prepared as follows:
s1, uniformly mixing 2-ethylhexyl acrylate, hydroxypropyl acrylate, acrylic acid and azobisisobutyronitrile in a four-neck flask provided with a stirrer, a reflux condenser, a thermometer and a dropping funnel, heating to 78 ℃, and carrying out heat preservation reaction for 8 hours to obtain an oligomer A, wherein the oligomer A is an acrylate prepolymer;
s2, heating the oligomer A to 100 ℃, and evacuating to remove water for 1.5 hours. And then cooling to 68 ℃, adding isocyanate ethyl acrylate into the oligomer A, reacting for 2 hours, adding dibutyltin dilaurate into the reaction system, continuing to react for 4 hours, adding hydroquinone, cooling to about 50 ℃, and taking out of the kettle to obtain a prepolymer B, namely the final glue.
In the comparative example, 5 parts of glue are repeatedly prepared by the same preparation method and are respectively marked as a comparative sample 1-1, a comparative sample 1-2, a comparative sample 1-3, a comparative sample 1-4 and a comparative sample 1-5.
Comparative example 2
Table 10 shows the formulation used to prepare the glue for this example.
TABLE 10 formulation of glue
The glue of this example was prepared with reference to the glue preparation method provided in example 1: the raw materials required for the formulation were prepared as in table 10 above, and in S1.3 of the glue preparation method provided in example 1, when the remaining mixed solution was added, the remaining mixed solution was added to the four-necked flask by pouring in one portion. Besides, other specific operations and parameter settings are strictly consistent with the glue preparation method provided in example 1.
Comparative example 3
Table 11 shows the formulations used to prepare the glues for this example.
TABLE 11 formulation of glue
The glue of this example was prepared with reference to the glue preparation method provided in example 1: the raw materials required for the formulation were prepared according to table 11 above, except that the addition of acrylic acid (i.e., the functional acrylate monomer) was omitted from S1.1 of the glue preparation method provided in example 1, and other specific operations and parameter settings were strictly consistent with the glue preparation method provided in example 1.
Test example
1. Experimental construction mode
The glue films formed by photocuring the glues prepared in examples 1-8 and comparative examples 1-5 were used for performance testing. The specific operation is as follows: taking 100g of the glue prepared in the above examples 1-8 and comparative examples 1-5, adding 9g of dipropylene glycol diacrylate and 2g of 2-hydroxy-2-methyl-1-phenyl acetone, uniformly stirring, coating on a 60 mu m BOPP film with a coating thickness of about 12 mu m, and carrying out photocuring on the glue by using a machine for 2min, wherein the wavelength of UV light is 300-400nm, and the dose of UV radiation of the curing machine is 150mJ/cm2. And then cutting the protective film into a width of 25mm, attaching the protective film to the aluminum-plastic film, and testing the steel plate peeling force of the protective film adhesive tape and the peeling force of the aluminum-plastic film after high temperature and high pressure.
Testing of peel force: the adhesive films prepared by the glues prepared in examples 1-8 and comparative examples 1-5 were subjected to peel strength test according to the method in the national standard GB/T2792-2014.
2. Results of the experiment
The results of performance tests performed on adhesive films prepared using the glues prepared in examples 1 to 8 and comparative examples 1 to 5 are shown in table 12. Generally, the preferable range of the steel plate peeling force for the battery protective film adhesive tape is 0.1 to 0.3N/25mm, and the preferable range of the aluminum plastic film peeling force after high temperature and high pressure is 0.3 to 0.5N/25 mm. Test results show that the glue films prepared by the glues prepared in the embodiments 1 to 8 are all located within a range of a better stripping force of the battery protective film adhesive tape, wherein the glue films prepared by the glues prepared in the embodiments 1 to 6 have no degumming condition at high temperature and high pressure, have good stripping performance, and the glue films prepared by the glues prepared in the embodiments 7 to 8 have a small amount of degumming and a serious degumming condition at high temperature and high pressure.
In example 1 and comparative example 1, 5 sets of parallel experiments were respectively set, and 5 samples prepared repeatedly by the same method were subjected to performance testing to evaluate the controllability of the process and the product performance stability of the adopted method. The test result shows that: the numerical distribution span between the steel plate peeling force corresponding to the 5 parallel experimental samples prepared in the comparative example 1 and the aluminum-plastic film peeling force after high temperature and high pressure is large, wherein the steel plate peeling force corresponding to part of the samples can fall within a proper numerical range, and no obvious degumming or a small amount of degumming occurs under high temperature and high pressure; the steel plate peeling force and the aluminum plastic film peeling force after high temperature and high pressure of the 5 parallel experimental samples prepared in example 1 are all within a proper numerical range, and no obvious degumming condition occurs under high temperature and high pressure. Comparative example 1 in the preparation of oligomer A process does not adopt the step feeding way but adopts the one-step feeding reaction way, resulting in the loss of controllability of the molecular weight of the prepared acrylate glue, the glue film formed by the glue has larger viscosity, and the serious degumming condition occurs after high temperature and high pressure.
The steel plate peeling force and the aluminum plastic film peeling force after high temperature and high pressure of the comparative examples 2-3 are both large in value, and a small amount of degumming or severe degumming occurs under high temperature and high pressure. In the comparative example 2, when the residual mixed solution is added in the step S1.3, the acrylic ester glue is easily exploded and polymerized in a one-time pouring mode; comparative example 3 in step S1.1, the addition of a functional acrylate monomer (polar group-containing acrylate monomer) is omitted, so that cohesive energy of the acrylate glue is reduced, and thus cohesive energy of an adhesive film formed by the acrylate glue is also correspondingly reduced, which adversely affects peeling performance of the adhesive film.
TABLE 12 film property test results of glue films prepared by using the glues prepared in examples 1 to 8 and comparative examples 1 to 3
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The glue for the battery protection film adhesive tape is characterized by comprising the following raw materials in parts by weight:
66-110 parts of acrylate monomer, 1-10 parts of isocyanate monomer and 0.05-2 parts of thermal initiator;
the acrylate monomer comprises a non-functional acrylate monomer and a hydroxyl-containing acrylate monomer, wherein the non-functional acrylate monomer is acrylate with the glass transition temperature of-70 ℃ to-10 ℃;
the proportion of the non-functional acrylate monomer in the acrylate monomer is not less than 83 wt%, and the proportion of the hydroxyl-containing acrylate monomer in the acrylate monomer is not less than 1 wt%.
2. The glue for a battery protective film adhesive tape according to claim 1, wherein: the non-functional acrylate monomer is selected from at least one of methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, lauryl acrylate, butyl methacrylate and 2-ethylhexyl methacrylate.
3. The glue for a battery protective film adhesive tape according to claim 1, wherein: the hydroxyl-containing acrylate monomer is at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate and hydroxypropyl methacrylate.
4. The glue for a battery protective film adhesive tape according to claim 3, wherein: the isocyanate monomer comprises isocyanate ethyl acrylate.
5. The glue for a battery protective film adhesive tape according to claim 1, wherein: the acrylate monomer also comprises a functional acrylate monomer, the ratio of the functional acrylate monomer in the acrylate monomer is not less than 0.1 wt% according to the mass percentage, and the functional acrylate monomer contains a polar group.
6. The method for preparing the glue for the battery protective film adhesive tape according to any one of claims 1 to 5, characterized by comprising the following steps:
S1.
s1.1, mixing the acrylate monomer and the thermal initiator to form a mixed solution;
s1.2, heating part of the mixed solution to 60-90 ℃, and carrying out heat preservation reaction;
s1.3, adding the rest of the mixed solution into the reaction system, continuing to preserve heat, and reacting to generate an oligomer A, wherein the oligomer A is an acrylate prepolymer;
s2, removing moisture from the oligomer A, and then adding the isocyanate monomer into the oligomer A to enable the oligomer A and the isocyanate monomer to perform condensation reaction to obtain a prepolymer B, wherein the prepolymer B is the glue for the battery protective film adhesive tape.
7. The method for preparing glue for a battery protective film adhesive tape according to claim 6, wherein: in the S1.2, the amount of the mixed solution taken is 10-20 wt% of the total amount of the mixed solution.
8. The method for preparing the glue for the battery protective film adhesive tape according to claim 7, wherein:
in the S1.2, the reaction time is 0.5-2 hours;
in S1.3, the reaction time is 2-6 hours.
9. The preparation method of the glue for the battery protective film adhesive tape according to claim 8, wherein the step of adding 0.01 to 0.1 part of catalyst and 0.01 to 0.2 part of polymerization inhibitor to the S2 is further included according to parts by weight.
10. The use of the glue for a battery protective film adhesive tape according to claim 1 for the preparation of a UV light curing glue, wherein: mixing 100 parts by weight of the glue for the battery protection tape, 0.5-5 parts by weight of a photoinitiator and 3-20 parts by weight of an active diluent to form UV (ultraviolet) light curing glue, and irradiating the UV light curing glue by using ultraviolet light to form a formed glue film.
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| US20220025215A1 (en) * | 2019-02-11 | 2022-01-27 | 3M Innovative Properties Company | Uv curable adhesive |
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| US20220025215A1 (en) * | 2019-02-11 | 2022-01-27 | 3M Innovative Properties Company | Uv curable adhesive |
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| CN115011269A (en) * | 2022-07-20 | 2022-09-06 | 东莞澳中新材料科技股份有限公司 | Special protection film of hot melt UV coating lithium cell |
| CN115011269B (en) * | 2022-07-20 | 2024-03-19 | 东莞澳中新材料科技股份有限公司 | Special protection film of hot melt UV coating lithium cell |
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