TW201522079A - 密封帶 - Google Patents
密封帶 Download PDFInfo
- Publication number
- TW201522079A TW201522079A TW103128108A TW103128108A TW201522079A TW 201522079 A TW201522079 A TW 201522079A TW 103128108 A TW103128108 A TW 103128108A TW 103128108 A TW103128108 A TW 103128108A TW 201522079 A TW201522079 A TW 201522079A
- Authority
- TW
- Taiwan
- Prior art keywords
- sealing tape
- sensitive adhesive
- acrylate
- pressure
- group
- Prior art date
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 123
- 239000010410 layer Substances 0.000 claims abstract description 123
- 239000000178 monomer Substances 0.000 claims abstract description 67
- 229920000642 polymer Polymers 0.000 claims abstract description 56
- 239000000203 mixture Substances 0.000 claims abstract description 36
- 125000000524 functional group Chemical group 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 98
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 67
- 239000003792 electrolyte Substances 0.000 claims description 51
- -1 methoxyethyl Chemical group 0.000 claims description 47
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 239000003431 cross linking reagent Substances 0.000 claims description 23
- 125000004432 carbon atom Chemical group C* 0.000 claims description 18
- 125000000217 alkyl group Chemical group 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 8
- 150000002431 hydrogen Chemical class 0.000 claims description 7
- 239000004593 Epoxy Substances 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- 239000012948 isocyanate Substances 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 150000002513 isocyanates Chemical class 0.000 claims description 5
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical class CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 229920006267 polyester film Polymers 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- HZMXJTJBSWOCQB-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethyl prop-2-enoate Chemical compound COCCOCCOC(=O)C=C HZMXJTJBSWOCQB-UHFFFAOYSA-N 0.000 claims description 3
- WFSMVVDJSNMRAR-UHFFFAOYSA-N 2-[2-(2-ethoxyethoxy)ethoxy]ethanol Chemical compound CCOCCOCCOCCO WFSMVVDJSNMRAR-UHFFFAOYSA-N 0.000 claims description 3
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims description 3
- 125000002947 alkylene group Chemical group 0.000 claims description 3
- 125000003277 amino group Chemical group 0.000 claims description 3
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 239000013522 chelant Substances 0.000 claims description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 3
- VZXTWGWHSMCWGA-UHFFFAOYSA-N 1,3,5-triazine-2,4-diamine Chemical group NC1=NC=NC(N)=N1 VZXTWGWHSMCWGA-UHFFFAOYSA-N 0.000 claims description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims description 2
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920002301 cellulose acetate Polymers 0.000 claims description 2
- 229920000847 nonoxynol Polymers 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 2
- 229920006289 polycarbonate film Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- LVZWSLJZHVFIQJ-UHFFFAOYSA-N Cyclopropane Chemical compound C1CC1 LVZWSLJZHVFIQJ-UHFFFAOYSA-N 0.000 claims 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims 1
- 229920000768 polyamine Polymers 0.000 claims 1
- 239000011112 polyethylene naphthalate Substances 0.000 claims 1
- 239000008151 electrolyte solution Substances 0.000 abstract description 15
- 230000008602 contraction Effects 0.000 abstract description 7
- 238000006116 polymerization reaction Methods 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 description 44
- 238000000034 method Methods 0.000 description 27
- HFCUBKYHMMPGBY-UHFFFAOYSA-N 2-methoxyethyl prop-2-enoate Chemical compound COCCOC(=O)C=C HFCUBKYHMMPGBY-UHFFFAOYSA-N 0.000 description 18
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 16
- NDWUBGAGUCISDV-UHFFFAOYSA-N 4-hydroxybutyl prop-2-enoate Chemical compound OCCCCOC(=O)C=C NDWUBGAGUCISDV-UHFFFAOYSA-N 0.000 description 15
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 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 8
- 230000003746 surface roughness Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 5
- 235000015110 jellies Nutrition 0.000 description 5
- 239000008274 jelly Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 238000005227 gel permeation chromatography Methods 0.000 description 4
- 229910003002 lithium salt Inorganic materials 0.000 description 4
- 159000000002 lithium salts Chemical class 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical compound ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 3
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 125000005442 diisocyanate group Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- BEQKKZICTDFVMG-UHFFFAOYSA-N 1,2,3,4,6-pentaoxepane-5,7-dione Chemical compound O=C1OOOOC(=O)O1 BEQKKZICTDFVMG-UHFFFAOYSA-N 0.000 description 2
- GOYDNIKZWGIXJT-UHFFFAOYSA-N 1,2-difluorobenzene Chemical compound FC1=CC=CC=C1F GOYDNIKZWGIXJT-UHFFFAOYSA-N 0.000 description 2
- FTALTLPZDVFJSS-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl prop-2-enoate Chemical compound CCOCCOCCOC(=O)C=C FTALTLPZDVFJSS-UHFFFAOYSA-N 0.000 description 2
- GJYCVCVHRSWLNY-UHFFFAOYSA-N 2-butylphenol Chemical compound CCCCC1=CC=CC=C1O GJYCVCVHRSWLNY-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- OZJPLYNZGCXSJM-UHFFFAOYSA-N 5-valerolactone Chemical compound O=C1CCCCO1 OZJPLYNZGCXSJM-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 125000004093 cyano group Chemical group *C#N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 2
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- LYXSEGMJYXGXSO-UHFFFAOYSA-N iodine;toluene Chemical compound [I].CC1=CC=CC=C1 LYXSEGMJYXGXSO-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- KJTLQQUUPVSXIM-ZCFIWIBFSA-M (R)-mevalonate Chemical compound OCC[C@](O)(C)CC([O-])=O KJTLQQUUPVSXIM-ZCFIWIBFSA-M 0.000 description 1
- RELMFMZEBKVZJC-UHFFFAOYSA-N 1,2,3-trichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1Cl RELMFMZEBKVZJC-UHFFFAOYSA-N 0.000 description 1
- AJKNNUJQFALRIK-UHFFFAOYSA-N 1,2,3-trifluorobenzene Chemical compound FC1=CC=CC(F)=C1F AJKNNUJQFALRIK-UHFFFAOYSA-N 0.000 description 1
- RIWAPWDHHMWTRA-UHFFFAOYSA-N 1,2,3-triiodobenzene Chemical compound IC1=CC=CC(I)=C1I RIWAPWDHHMWTRA-UHFFFAOYSA-N 0.000 description 1
- PEBWOGPSYUIOBP-UHFFFAOYSA-N 1,2,4-trifluorobenzene Chemical compound FC1=CC=C(F)C(F)=C1 PEBWOGPSYUIOBP-UHFFFAOYSA-N 0.000 description 1
- KSXFNGRHPAHIQJ-UHFFFAOYSA-N 1,2,4-triiodobenzene Chemical compound IC1=CC=C(I)C(I)=C1 KSXFNGRHPAHIQJ-UHFFFAOYSA-N 0.000 description 1
- BBOLNFYSRZVALD-UHFFFAOYSA-N 1,2-diiodobenzene Chemical compound IC1=CC=CC=C1I BBOLNFYSRZVALD-UHFFFAOYSA-N 0.000 description 1
- ZPQOPVIELGIULI-UHFFFAOYSA-N 1,3-dichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1 ZPQOPVIELGIULI-UHFFFAOYSA-N 0.000 description 1
- UEMGWPRHOOEKTA-UHFFFAOYSA-N 1,3-difluorobenzene Chemical compound FC1=CC=CC(F)=C1 UEMGWPRHOOEKTA-UHFFFAOYSA-N 0.000 description 1
- SFPQFQUXAJOWNF-UHFFFAOYSA-N 1,3-diiodobenzene Chemical compound IC1=CC=CC(I)=C1 SFPQFQUXAJOWNF-UHFFFAOYSA-N 0.000 description 1
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 1
- QUGUFLJIAFISSW-UHFFFAOYSA-N 1,4-difluorobenzene Chemical compound FC1=CC=C(F)C=C1 QUGUFLJIAFISSW-UHFFFAOYSA-N 0.000 description 1
- LFMWZTSOMGDDJU-UHFFFAOYSA-N 1,4-diiodobenzene Chemical compound IC1=CC=C(I)C=C1 LFMWZTSOMGDDJU-UHFFFAOYSA-N 0.000 description 1
- WGPNJZYOHABTAS-UHFFFAOYSA-N 1,5,6-trichloro-5-methylcyclohexa-1,3-diene Chemical compound CC1(Cl)C=CC=C(Cl)C1Cl WGPNJZYOHABTAS-UHFFFAOYSA-N 0.000 description 1
- HLXVPOUBXXSTNB-UHFFFAOYSA-N 1,5,6-trifluoro-5-methylcyclohexa-1,3-diene Chemical compound CC1(F)C=CC=C(F)C1F HLXVPOUBXXSTNB-UHFFFAOYSA-N 0.000 description 1
- BCIXPTYBPVDLSF-UHFFFAOYSA-N 1,5,6-triiodo-5-methylcyclohexa-1,3-diene Chemical compound CC1(I)C=CC=C(I)C1I BCIXPTYBPVDLSF-UHFFFAOYSA-N 0.000 description 1
- CXKUBSWJMNSYFO-UHFFFAOYSA-N 1,5-dichloro-5-methylcyclohexa-1,3-diene Chemical compound CC1(Cl)CC(Cl)=CC=C1 CXKUBSWJMNSYFO-UHFFFAOYSA-N 0.000 description 1
- PXMUFZLVYDRMJG-UHFFFAOYSA-N 1,5-difluoro-5-methylcyclohexa-1,3-diene Chemical compound CC1(F)CC(F)=CC=C1 PXMUFZLVYDRMJG-UHFFFAOYSA-N 0.000 description 1
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 description 1
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- JWYVGKFDLWWQJX-UHFFFAOYSA-N 1-ethenylazepan-2-one Chemical compound C=CN1CCCCCC1=O JWYVGKFDLWWQJX-UHFFFAOYSA-N 0.000 description 1
- MMZYCBHLNZVROM-UHFFFAOYSA-N 1-fluoro-2-methylbenzene Chemical compound CC1=CC=CC=C1F MMZYCBHLNZVROM-UHFFFAOYSA-N 0.000 description 1
- AKUNSTOMHUXJOZ-UHFFFAOYSA-N 1-hydroperoxybutane Chemical compound CCCCOO AKUNSTOMHUXJOZ-UHFFFAOYSA-N 0.000 description 1
- IHWDSEPNZDYMNF-UHFFFAOYSA-N 1H-indol-2-amine Chemical compound C1=CC=C2NC(N)=CC2=C1 IHWDSEPNZDYMNF-UHFFFAOYSA-N 0.000 description 1
- IVIDDMGBRCPGLJ-UHFFFAOYSA-N 2,3-bis(oxiran-2-ylmethoxy)propan-1-ol Chemical compound C1OC1COC(CO)COCC1CO1 IVIDDMGBRCPGLJ-UHFFFAOYSA-N 0.000 description 1
- YWWOHROKOFWJSP-UHFFFAOYSA-N 2,5,6-trichloro-5-methylcyclohexa-1,3-diene Chemical compound CC1(Cl)C=CC(Cl)=CC1Cl YWWOHROKOFWJSP-UHFFFAOYSA-N 0.000 description 1
- ZMTGTJVJFGMZKJ-UHFFFAOYSA-N 2,5,6-trifluoro-5-methylcyclohexa-1,3-diene Chemical compound CC1(F)C=CC(F)=CC1F ZMTGTJVJFGMZKJ-UHFFFAOYSA-N 0.000 description 1
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- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- IUCJMVBFZDHPDX-UHFFFAOYSA-N tretamine Chemical compound C1CN1C1=NC(N2CC2)=NC(N2CC2)=N1 IUCJMVBFZDHPDX-UHFFFAOYSA-N 0.000 description 1
- 229950001353 tretamine Drugs 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
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Abstract
本發明提供密封帶與二次電池。用於黏著電極組合件的密封帶包含壓敏性黏合劑層,其包含壓敏性黏合劑組成物的固化產物,該壓敏性黏合劑組成物包含一聚合物,其包含作為聚合單元的含極性官能基之單體,及該密封帶和電解液接觸後膨脹而脫離該電極組合件,因此二次電池重複充電及放電可引起該電極組合件的等方向性體積膨脹與收縮,而可防止斷路現象,在該斷路現象中電極斷開。
Description
本發明係關於密封帶與二次電池。
根據技術之發展與對行動裝置的需求增加,對作為能源之二次電池的需求業已大大地增加,特別地,在該二次電池中,具有高的能量密度與放電電壓之鋰二次電池正被商品化及廣泛使用。該二次電池分為圓柱形電池與方形電池,其中電極組合件被嵌入圓柱形或方形金屬罐中,以及袋型電池,其中電極組合件被安裝於鋁疊層片之袋型外殼中。
例如,用包含壓敏性黏合劑層的密封帶固定果凍捲型電極組合件(以下稱作「果凍捲(jelly roll)」)的一端,及將該電極組合件收置於圓柱形金屬外殼中以製造該圓柱形電池,及由於該二次電池特性,在重複充電/放電過程中,使用該密封帶重複非等方向性體積膨脹與收縮。在這種情形下,該果凍捲型電極組合件之
外表面是在非等方向性膨脹與收縮的最大影響下,因此可能發生斷路現象,在該斷路現象中電極斷開。
本發明之目的在於提供密封帶與二次電池。
本發明一方面提供密封帶。在一實例中,在利用壓敏性黏合劑層將該密封帶黏著在電極組合件及將該電極組合件插入電池罐中而製造二次電池的情形,當該壓敏性黏合劑層和電解液接觸時,該壓敏性黏合劑層吸收該電解液,然後膨脹或增大。這時該密封帶形成三維立體結構,且該壓敏性黏合劑層表面具有在特定範圍內的表面粗糙度值。於是由於該電極組合件與該壓敏性黏合劑層之間的黏合強度或剝離強度減低,該壓敏性黏合劑層脫離該電極組合件,所以可藉由引發該電極組合件的等方向性體積膨脹與收縮而防止電極的斷路現象。
在下文將參照附圖來說明本發明之密封帶,但該附圖只是示範,且本發明之密封帶不限於該附圖。
圖1是密封帶10之示範橫剖面圖。
參照圖1,該密封帶10包含基底層12與形成於該基底層12之一表面上的壓敏性黏合劑層11。
該基底層12可為,例如,選自由下列所組成之組群中的至少一者:丙烯酸膜、聚烯烴膜、聚醯胺膜、聚碳酸酯膜、聚胺基甲酸酯膜、乙酸纖維素膜、與聚酯膜,但本發明不限於此。
當將聚酯膜用作為該基底層12時,可使用選自由下列所組成之組群中的至少一者:聚對苯二甲酸乙二醇酯膜、聚萘二甲酸乙二醇酯膜、與聚對苯二甲酸丁二醇酯膜,而當將以纖維素為基礎的基底層用作為該基底層12,例如,用作為該包含乙酸纖維素樹脂或烷酸纖維素樹脂的基底層12時,可使用藉由對包含該樹脂的混合物施加擠壓成形法或鑄塑法所形成的該基底層12。在這裡,可將例如乙酸丙酸纖維素或乙酸丁酸纖維素用作為該烷酸纖維素。
形成使用該樹脂的基底層12之方法可為,但沒有特別限於,例如,形成使用包含該樹脂的原料與根據需要的已知添加劑之慣用的薄膜或片的方法,例如擠壓成形法或鑄塑法。
當該基底層12為片或薄膜形態時,該基底層12之厚度可為,例如,約10至200μm、10至100μm、10至50μm、15至30μm、或15至20μm。
該密封帶10包含該壓敏性黏合劑層11,而該壓敏性黏合劑層11可吸收電解液,且可在和該電解液接觸後膨脹,所以該密封帶10可形成三維立體結構。例如,該壓敏性黏合劑層11在該電解液接觸時可於厚度方向與/或長度方向膨脹,所以可具有立體結構。在這裡,該密封帶10之「立體結構」乙辭係藉由該密封帶10和該電解液接觸時該壓敏性黏合劑層11的膨脹強度及該基底層12的剝離強度之作用而形成,且該立體結構可包含所
有結構,其中該壓敏性黏合劑層11可脫離電極組合件。
在一實例中,該立體結構可包含複數個於與該壓敏性黏合劑層之長度方向成垂直的方向凸出的形狀。在這裡,該術語「長度方向」可指當該壓敏性黏合劑層保持平面形狀時與該壓敏性黏合劑層之厚度方向成垂直的方向。此外,該術語「垂直」或「平行」可指沒有損害期望功效的大致上垂直或平行,且可包含約±10度、±5度、或±3度的誤差。
如前文所述,在和該電解液接觸後具有包含複數個凸出的形狀之立體結構的該壓敏性黏合劑層之表面的中心線平均粗糙度(Ra)可為100至250μm,例如150至240μm或155至230μm。該中心線平均粗糙度(Ra)可為在和該電解液接觸24小時後測定的值。在將本發明之壓敏性黏合劑層的立體結構之中心線平均粗糙度控制在前述範圍內時,該密封帶可有效率地脫離該電極組合件的外周圍表面。該術語「中心線平均粗糙度」乃指在下列情形時可從方程式1得到的值(單位微米):為該具有立體結構之壓敏性黏合劑層的橫剖面照相,從該照相影像將三維結構的橫剖面數學模式化而得到粗糙度曲線,然後從該粗糙度曲線沿其平均線方向擷取標準長度L數據,其中該平均線方向是以x軸表示,垂直方向是以y軸表示,及該粗糙度曲線是以y=f(x)表示。
該中心線平均粗糙度可在ASTM D4417規範下測定,或藉由JIS B0031或JIS B0601所定義的方式得到。
在一實例中,該壓敏性黏合劑層11可包含壓敏性黏合劑組成物的固化產物,及包含以交聯形式被包含在該壓敏性黏合劑組成物中的聚合物。例如,該壓敏性黏合劑組成物包含一聚合物,其具有由(甲基)丙烯酸酯單體、具有極性官能基之單體、與含可交聯的官能基之可交聯的單體衍生之聚合單元。在一實例中,在利用該壓敏性黏合劑層將包含該由壓敏性黏合劑組成物所形成的壓敏性黏合劑層之密封帶黏著在該電極組合件,及將該電極組合件插入電池罐中而製造二次電池的情形,該壓敏性黏合劑層在和被注入該二次電池的電解液接觸時,由於存在於該壓敏性黏合劑層中的該具有極性官能基之單體的極性官能基的存在而變形,例如增大或膨脹。這時,由於該密封帶形成三維立體結構且該壓敏性黏合劑層表面具有在特定範圍內的表面粗糙度值,所以減低該電極組合件與該壓敏性黏合劑層之間的黏合強度或剝離強度,該壓敏性黏合劑層可脫離該電極組合件,所以藉由引起該電極組合件的等方向性體積膨脹與收縮而可防止該電極斷開。
該壓敏性黏合劑組成物包含具有聚合單元的
聚合物,在一實例中,該聚合物可包含,例如,聚合形式的(甲基)丙烯酸酯單體、具有極性官能基之單體、與具有可交聯的官能基之可交聯的單體。
例如,可將(甲基)丙烯酸烷酯用作為作為聚合單元之被包含在該聚合物中的(甲基)丙烯酸酯單體,考慮到該壓敏性黏合劑之黏結強度、玻璃化轉變溫度、或壓敏性黏合性,可使用具有具1至14個碳原子的烷基之(甲基)丙烯酸烷酯。該單體可為,但不限於,下列中的一者或至少二者:(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸正丙酯、(甲基)丙烯酸異丙酯、(甲基)丙烯酸正丁酯、(甲基)丙烯酸三級丁酯、(甲基)丙烯酸二級丁酯、(甲基)丙烯酸戊酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸2-乙基丁酯、(甲基)丙烯酸正辛酯、(甲基)丙烯酸異辛酯、(甲基)丙烯酸異壬酯、(甲基)丙烯酸十二烷酯、與(甲基)丙烯酸十四烷酯。
在這裡,該術語「(甲基)丙烯酸酯」乃指丙烯酸酯或甲基丙烯酸酯,彼等可適用於涉及「(甲基)」的其他術語。
該具有極性官能基之單體是對電解液有極佳親和性的單體,且該壓敏性黏合劑組成物的聚合物包含在聚合單元中的具有極性官能基之單體,以藉由在該由壓敏性黏合劑組成物形成的壓敏性黏合劑層和該電解液接觸時變形,例如增大或膨脹,而減低該電極組合件與該壓敏性
黏合劑層之間的黏合強度或剝離強度。此外,在本發明中,藉由將具有特定結構之單體用作為該具有極性官能基之單體,在該密封帶和該電解液接觸時可形成具有特定表面粗糙度之立體結構,所以該密封帶可極佳效率地脫離該電極組合件以引起該電極組合件的等方向性體積膨脹與收縮而有效率地防止該電極斷開。
在一實例中,該具有極性官能基之單體可如式1所示:
在式1中,R1代表氫或具1至12個碳原子的烷基,R2代表具1至6個碳原子的伸烷基,R3代表氫、具1至12個碳原子的烷基、具6至24個碳原子的芳基、或具6至48個碳原子的芳烷基,及n是0或更大。
在式1中,R1是氫、或具1至12、1至8、或1至4個碳原子的烷基,例如氫、甲基、乙基、丙基、丁基、戊基、或己基,較佳是氫或甲基,但本發明不限於此。
此外,在式1中,R2是具1至6、1至4、或1至2個碳原子的伸烷基,較佳是伸乙基或伸丙基,但本發明不限於此。
R3是氫、具1至12、1至8、1至6、或1至4個碳原子的烷基;具6至24、6至20、6至18、或6至12個碳原子的芳基;或具6至48、6至30、6至24、或6至18個碳原子的芳烷基,例如氫、甲基、乙基、丙基、苯基、萘基、丁基酚基、戊基酚基、己基酚基、庚基酚基、辛基酚基、或壬基酚基,但本發明不限於此。
此外,n可為0或更大,例如1或更大,較佳是2或更大。
在一實例中,該如式1所示之單體可為如式2所示之單體:
在式2中,R1與R3係如前述的定義,p+q是1或更大,p是0到100,及q是0到100。
例如,可將選自由下列所組成之組群中的至少一者用作為該如式1或2所示之單體:(甲基)丙烯酸甲氧基乙酯、(甲基)丙烯酸甲氧基乙氧基乙酯、(甲基)丙烯酸乙氧基乙氧基乙酯、乙氧基三乙二醇(甲基)丙烯酸酯、聚乙二醇(甲基)丙烯酸酯、聚乙二醇甲醚(甲基)丙烯酸酯、乙氧基化壬基酚(甲基)丙烯酸酯、丙氧基化壬基酚(甲基)丙烯酸酯、乙氧基化苯酚(甲
基)丙烯酸酯、與聚丙二醇(甲基)丙烯酸酯,較佳是(甲基)丙烯酸甲氧基乙酯、(甲基)丙烯酸甲氧基乙氧基乙酯、(甲基)丙烯酸乙氧基乙氧基乙酯、乙氧基三乙二醇(甲基)丙烯酸酯、聚乙二醇(甲基)丙烯酸酯、或聚乙二醇甲醚(甲基)丙烯酸酯,但本發明不限於此。
由於該如式1或2所示之單體包含至少一個氧原子且由於因為該氧原子的高陰電性而顯出很高的極性,該包含單體的壓敏性黏合劑層可對極性電解液有高的親和性,且可在和該電解液接觸時膨脹。同時,該術語「電解液」可指,例如,二次電池中所用之用於離子導電的介質。在一實例中,該電解液(electrolyte)可為液體介質,也就是電解液(electrolyte solution),但本發明不限於此。在本發明中,該電解液(electrolyte solution)也可被表示為電解液(electrolyte)。
該聚合物可包含30至300重量份,例如40至280重量份或44至250重量份的如式1所示之單體,該重量份係相對於100重量份的聚合形式的(甲基)丙烯酸酯單體,但本發明不限於此。此外,該如式1所示之單體含量可為25至80重量份,例如25至75重量份或30至70重量份,該重量份係相對於100重量份的該作為聚合單元之被包含在該聚合物中的總單體。當該如式1所示之單體含量太少時,該壓敏性黏合劑層在和該電解液接觸時很難膨脹到足以脫離該電極組合件,而當該如式1所示之單體含量太多時,由於發生在該聚合物之聚合反應中的
過度凝膠化,所以可能很難實現該壓敏性黏合劑之壓敏性黏合性。所以考慮到這些問題,可將具有極性官能基之單體含量控制在前述範圍內。在本發明中,除非另外具體定義,否則該術語「重量份」乃指相對重量比。
該具有可交聯的官能基之可交聯的單體可為可以和被包含在該(甲基)丙烯酸酯單體或聚合物中的另一種單體共聚合之單體,且提供能夠和在共聚合後的該聚合物之主鏈中的多官能性交聯劑反應之交聯點。在這裡,該可交聯的官能基可為羥基、羧基、異氰酸酯基、環氧丙基、或醯胺基,或在某些情形下,光可交聯的官能基,例如丙烯醯基或甲基丙烯醯基。可藉由使具有光可交聯的官能基之化合物反應而將該光可交聯的官能基引進由該可共聚合的單體所提供之可交聯的官能基中。下列可用作為該包含羥基之可交聯的單體:例如,包含羥基之單體,例如(甲基)丙烯酸羥乙酯、(甲基)丙烯酸羥丙酯、(甲基)丙烯酸羥丁酯、(甲基)丙烯酸羥己酯、(甲基)丙烯酸羥辛酯、羥基乙二醇(甲基)丙烯酸酯、甘油(甲基)丙烯酸酯、或羥基丙二醇(甲基)丙烯酸酯、或彼等之至少一者混合的單體,但本發明不限於此。該含羧基之單體可為,但不限於,例如(甲基)丙烯酸、(甲基)丙烯酸羧乙酯、(甲基)丙烯酸羧戊酯、衣康酸(itaconic acid)、順丁烯二酸、反丁烯二酸、或丁烯酸。此外,該包含環氧丙基之可交聯的單體可為,但不限於,例如(甲基)丙烯酸環氧基環烷基烷酯,例如(甲基)丙烯酸環氧
丙酯、(甲基)丙烯酸環氧基烷酯、或(甲基)丙烯酸環氧基環己基甲酯。該包含異氰酸酯基之可交聯的單體可為,但不限於,例如(甲基)丙烯酸2-異氰酸根絡乙酯、異氰酸1,1-雙(丙烯醯氧基甲基)乙酯、異氰酸(甲基)丙烯醯氧基乙酯、異氰酸甲異丙基-α,α-二甲基苄酯、異氰酸甲基丙烯醯酯、或異氰酸烯丙酯;藉由二異氰酸酯化合物或多元異氰酸酯化合物與(甲基)丙烯酸2-羥乙酯反應所得之單異氰酸丙烯醯酯化合物;或藉由二異氰酸酯化合物或多元異氰酸酯化合物與多元醇化合物與(甲基)丙烯酸2-羥乙酯反應所得之單異氰酸丙烯醯酯化合物。該含醯胺基之單體可為,但不限於,例如(甲基)丙烯醯胺、二乙基丙烯醯胺、N-乙烯吡咯啶酮、N,N-二甲基(甲基)丙烯醯胺、N,N-二乙基(甲基)丙烯醯胺、N,N’-亞甲雙丙烯醯胺、N,N-二甲基胺基丙基丙烯醯胺、N,N-二甲基胺基丙基甲基丙烯醯胺、或二丙酮(甲基)丙烯醯胺。此外,該含胺基之單體可為,但不限於,例如(甲基)丙烯酸胺基乙酯、(甲基)丙烯酸N,N-二甲基胺基乙酯、或(甲基)丙烯酸N,N-二甲基胺基丙酯。該含烷氧矽烷基之單體可為,但不限於,(甲基)丙烯酸三甲氧矽烷基丙酯或(甲基)丙烯酸烯丙氧基乙酯。
該聚合物可包含0.1至10重量份,例如2.5至10重量份、2.9至9重量份、或2.9至8重量份的可交聯的單體,該重量份係相對於100重量份之聚合形式的(甲基)丙烯酸酯單體,但本發明不限於此。此外,該可
交聯的單體含量可為0.1至5重量份,例如0.5至3重量份或1至2重量份,該重量份係相對於100重量份的該作為聚合單元之被包含在聚合物中的總單體。當該可交聯的單體含量太多時,由於過低的剝離強度,所以該壓敏性黏合劑層很難固定電極組合件,而當該可交聯的單體含量太少時,該壓敏性黏合劑層在和電解液接觸時很難膨脹到足以脫離該電極組合件。考慮到這些問題,可將該可交聯的單體含量控制在前述範圍內。
該聚合物可根據需要另外包含聚合形式的官能性共聚單體,例如,可為如式3所示之單體:
在式3中,R6至R8各獨立地代表氫或烷基,R9代表氰基、未經取代或經烷基取代之苯基;乙醯氧基;或COR10,而R10代表胺基或未經取代或經烷基或烷氧基烷基取代之去水甘油氧基。
在式3中的R6至R10之定義中,該烷基或烷氧基乃指具1至8個碳原子的烷基或烷氧基,較佳是甲基、乙基、甲氧基、乙氧基、丙氧基、或丁氧基。
該如式3之單體的具體實例可為,但不限於,含氮之單體,例如(甲基)丙烯醯胺、N-丁氧基甲基
(甲基)丙烯醯胺、N-甲基(甲基)丙烯醯胺、(甲基)丙烯腈、N-乙烯吡咯啶酮、或N-乙烯己內醯胺;以苯乙烯為基礎之單體,例如苯乙烯或甲基苯乙烯;(甲基)丙烯酸環氧丙酯;己內酯;或羧酸乙烯酯,例如乙酸乙烯酯。
該聚合物可藉由多官能性交聯劑而以交聯形式包含在該組成物中。當該聚合物被以交聯形式包含時,該由組成物形成之壓敏性黏合劑層在和該電解液接觸時可具有膨脹或增大特性,因此防止電極斷開。此外,就該聚合物被以交聯形式包含而言,該由壓敏性黏合劑組成物形成之壓敏性黏合劑層可確保合適的黏結強度。
該交聯成聚合物之多官能性交聯劑類型沒有特別限制,且該多官能性交聯劑可根據存在於該聚合物中的可交聯的官能基類型而為選自下列已知交聯劑的合適交聯劑:異氰酸酯交聯劑、環氧基交聯劑、氮雜環丙烷交聯劑、金屬螯合物交聯劑、光交聯劑等。在這裡,該異氰酸酯交聯劑可為二異氰酸酯,例如二異氰酸甲苯酯、二異氰酸二甲苯酯、二苯甲烷二異氰酸酯、六亞甲基二異氰酸酯、異佛爾酮二異氰酸酯、二異氰酸四甲基二甲苯酯、或二異氰酸萘酯,或二異氰酸酯與多元醇的反應產物,及可將三甲醇基丙烷用作為多元醇。該環氧基交聯劑可為乙二醇二環氧丙醚、三環氧丙醚、三甲醇基丙烷三環氧丙醚、N,N,N',N'-四環氧丙基乙二胺、或丙三醇二環氧丙醚,及該氮雜環丙烷交聯劑可為N,N'-甲苯-2,4-雙(1-氮雜環丙
烷醯胺)、N,N'-二苯甲烷-4,4'-雙(1-氮雜環丙烷醯胺)、三亞乙基三聚氰胺、二間苯二醯基-1-(2-甲基氮雜環丙烷)(bisisoprothaloyl-1-(2-methylaziridine)、或三-1-氮雜環丙烷膦氧化物(tri-1-aziridinyl phosphineoxide)。該金屬螯合物交聯劑可為多價(multifunctional)金屬(例如鋁、鐵、鋅、錫、鈦、銻、鎂、或釩等)與化合物(例如乙醯丙酮或乙醯乙酸乙酯)配位的化合物,而該光交聯劑可為多官能基丙烯酸酯。在這裡,考慮到被包含在該聚合物中的可交聯的官能基類型,可使用一種或至少二種交聯劑。
可將該壓敏性黏合劑組成物中的多官能性交聯劑重量比控制在可確保後述之期望剝離強度或凝膠比例的範圍內。例如,該交聯劑含量可為0.001至10重量份,例如0.1至5重量份或0.5至4重量份,該重量份係相對於100重量份的該總組成物,但本發明不限於此。當該多官能性交聯劑比例太低時,可能不能合適地確保該壓敏性黏合劑層的黏結強度,而當該多官能性交聯劑比例太高時,壓敏性黏合性可能劣化。因此可選擇合適的比例範圍。
該被包含在壓敏性黏合劑組成物中的聚合物可藉由對該單體混合物施加聚合法而製備,該聚合法例如溶液聚合法、光聚合法、整體聚合法、懸浮聚合法、或乳化聚合法。
該聚合物之重量平均分子量(Mw)可為約
300,000至2,500,000、400,000至2,000,000、400,000至1,500,000、400,000至1,000,000、500,000至2,000,000、800,000至1,800,000、600,000至1,200,000、700,000至1,400,000、或600,000至800,000。在本發明中,該重量平均分子量可指藉由凝膠滲透層析法(GPC)所測量的標準聚苯乙烯之轉換值,除非另外特別定義,否則該分子量可指重量平均分子量。當該聚合物分子量太低時,該壓敏性黏合劑層之黏結強度可能劣化,而當該聚合物分子量太高時,該壓敏性黏合性可能劣化,因此可選擇合適的分子量。
該壓敏性黏合劑組成物除了前述組分之外,還可根據需要另外包含該技術領域內已知的各式各樣添加劑。例如,該壓敏性黏合劑組成物可另外包含增黏劑。該增黏劑可為,但不限於,例如,以松香酯為基礎的增黏劑或以苯乙烯為基礎的增黏劑,且根據需要可選擇及使用合適的類型。該增黏劑含量沒有特別限制,且可在考慮到對該電極組合件的剝離強度下加以控制。在一實例中,該增黏劑用量可為1至25重量份,該重量份係相對於100重量份的該聚合物。
該壓敏性黏合劑組成物可另外包含下列添加劑:例如引發劑,包含熱引發劑或光引發劑;環氧樹脂;固化劑;UV安定劑;抗氧化劑;色料;強化劑;填料;發泡劑;界面活性劑;光聚合性化合物,例如多官能基丙烯酸酯;或在不影響期望功效的範圍內的塑化劑。
在一實例中,該被包含在壓敏性黏合劑組成物中的聚合物可藉由選擇該技術領域內眾所周知的合適光引發劑透過光聚合法而製備。該光引發劑可為,但不限於,有機過氧化物,例如過氧化苯甲醯、1,1-雙(三級丁過氧)-3,3,5-三乙基環己烷、過氧乙酸三級丁酯、過氧苯甲酸三級丁酯、過氧基-2-乙基己酸三級丁酯、過氧基異丙基碳酸三級丁酯、過氧二碳酸二-2-乙基己酯、過氧二碳酸二異丙酯、過氧二碳酸二-3-甲氧丁酯、過氧化二-3,3,5-三甲基己醯、過氧化二(三級丁基)、過氧化月桂醯、過氧化二異丙苯、或過氧化甲基乙基酮;氫過氧化物,例如氫過氧化丁基或氫過氧化異丙苯;抗氧化劑,例如過氧化氫、過氧二硫化銨(ammonium peroxodisulfide)、硝酸及彼之鹽、過氯酸及彼之鹽、硫酸及彼之鹽、次氯酸及彼之鹽、過錳酸及彼之鹽、鉻酸及彼之鹽、二氧化鉛、二氧化錳、氧化銅、氯化鐵、氟、氯、溴、或碘;還原劑,例如硼氫化鈉、甲醛、乙醛、胺、或肼;偶氮化合物,例如偶氮二異丁腈(AIBN);輻射熱、紫外線、或高能量波長的方式;或在電解液中的電子遷移,彼等可被施加於該光聚合法。
該光引發劑含量可為,但沒有特別限於,0.01至5重量份,例如0.01至1重量份或0.01至0.5重量份,該重量份係相對於100重量份的該總單體混合物。
該壓敏性黏合劑層11可藉由下列方式而形成:在該基底層12上塗覆藉由混合該聚合物與多官能性
交聯劑所製備的塗料溶液,及在合適條件下引發該聚合物與該多官能性交聯劑之間的交聯反應。
該壓敏性黏合劑層11之厚度可根據用途,例如期望的剝離強度被適當地選擇,但本發明不特別限於此。該壓敏性黏合劑層11可被形成厚度為約,例如,2至100μm、3至50μm、4至25μm、2至15μm、4至10μm、4至9μm、4至7μm、5至9μm、或5至7μm,但可根據彼之用途而變動。
該密封帶10可黏著在該二次電池中的電極組合件的外周圍表面。此外,該根據本發明之示範具體實施方式的密封帶包含該壓敏性黏合劑層11,該壓敏性黏合劑層11沒有過高的初始剝離強度且包含前述的具有極性官能基之單體。因此當該密封帶10和該二次電池中的電解液接觸時,該壓敏性黏合劑層11吸收該電解液且膨脹,所以可將該壓敏性黏合劑層11之剝離強度控制於低的剝離強度以便脫離該電極組合件。
在一實例中,本發明之密封帶10可具有足以固定該電極組合件的初始剝離強度,且可在和該電解液接觸時脫離該電極組合件。當該電極組合件之初始剝離強度太高時,在和該電解液接觸後,該壓敏性黏合劑層11可能很難脫離電極組合件22。例如,該壓敏性黏合劑層11在室溫下對玻璃的剝離強度可為370gf/25mm或更少,例如350gf/25mm或更少、315gf/25mm或更少、或312gf/25mm或更少,該剝離強度是在剝離速度5mm/秒及剝
離角度180度條件下測量。該壓敏性黏合劑層11對玻璃的剝離強度下限沒有特別限制,例如,當該壓敏性黏合劑層之初始剝離強度很低時,該壓敏性黏合劑層在和電解液接觸時失去壓敏性黏合強度,所以該密封帶脫離該電極組合件而可防止電極斷開。但是當該壓敏性黏合劑層11之初始剝離強度太低時,在將該電極組合件收置於罐中之前該電極組合件可能還沒和該電解液接觸就展開。有鑒於此,可將該壓敏性黏合劑層11對玻璃的剝離強度下限控制為5gf/25mm或更多,例如10gf/25mm或更多、20gf/25mm或更多、30gf/25mm或更多、40gf/25mm或更多、50gf/25mm或更多、60gf/25mm或更多、70gf/25mm或更多、80gf/25mm或更多、85gf/25mm或更多、或88gf/25mm或更多。當該壓敏性黏合劑層11對玻璃的剝離強度是在前述範圍內時,即使在該壓敏性黏合劑層11黏著在該電極組合件的外周圍表面時仍可具有在和該電解液接觸時脫離的合適初始剝離強度,及在該密封帶10和該電解液接觸時形成具有特定表面粗糙度的立體結構。該電極組合件的外周圍表面可為,例如,分隔膜或堆疊在該分隔膜上的玻璃。
此外,由於該壓敏性黏合劑層11在和該電解液接觸時吸收電解液且膨脹導致本發明之密封帶10形成立體結構,及可將該壓敏性黏合劑層11之剝離強度控制於低的剝離強度以使得該壓敏性黏合劑層11脫離該電極組合件,所以該壓敏性黏合劑層11可脫離該電極組合件
之外周圍表面。在一實例中,該密封帶10可在和該電解液接觸後脫離該電極組合件之外周圍表面,較佳地,在該密封帶10黏著該電極組合件的外周圍表面之面積中有50%或更多,例如60%或更多、70%或更多、或80%或更多可脫離。
該密封帶10之厚度可根據期望的剝離強度被適當地選擇,但沒有特別限制。該密封帶10可被形成厚度為約,例如,10至100μm、15至75μm、20至45μm、15至40μm、20至40μm、或20至30μm,但可根據彼之用途而改變該厚度。當該密封帶10之厚度太小時,可能很難顯出根據該密封帶10之壓敏性黏合劑層11膨脹的效果,而當該密封帶10之厚度太大時,該電極組合件之厚度也增加,因此在被插入電池殼體時由於劣化的可加工性所以損害該電極組合件,或和具有相同規格的其他電池相比容量減低。
該密封帶10可另外包含黏著在該壓敏性黏合劑層11的離型片以在該密封帶被使用之前保護該壓敏性黏合劑層11。
本發明另一方面提供二次電池。
圖2是本發明之示範二次電池的示意圖。
在一實例中,如圖2所示,二次電池20包含電極組合件22及密封帶10,該密封帶10利用壓敏性黏合劑層11黏著該電極組合件22的外周圍表面。該密封帶10與該壓敏性黏合劑層11之說明同於前文所述,所以省
略之。
在本發明之二次電池20中,由於該密封帶10在利用該形成於基底層12上的壓敏性黏合劑層11固定該電極組合件22且和電解液接觸同時膨脹,所以對該電極組合件22的剝離強度減低,因此該壓敏性黏合劑層11可脫離該電極組合件22。
為了在該壓敏性黏合劑層11和電解液接觸時該壓敏性黏合劑層11可脫離該電極組合件22,該壓敏性黏合劑層11可被設計為具有合適初始剝離強度。例如,當該電極組合件之初始剝離強度太高時,該壓敏性黏合劑層11在和該電解液接觸後很難脫離該電極組合件22。該壓敏性黏合劑層在室溫下對該電極組合件的剝離強度可為,例如,1200gf/25mm或更少、1000gf/25mm或更少、900gf/25mm或更少、800gf/25mm或更少、700gf/25mm或更少、或600gf/25mm或更少,該剝離強度是在剝離速度5mm/秒及剝離角度180度條件下測量。該壓敏性黏合劑層11對該電極組合件的剝離強度下限沒有特別限制,例如,當該壓敏性黏合劑層11之初始剝離強度很低時,該壓敏性黏合劑層在和電解液接觸時可能失去壓敏性黏合強度,所以該密封帶脫離該電極組合件而可防止電極斷開。但是當該壓敏性黏合劑層11之初始剝離強度太低時,在將該電極組合件收置於罐中之前該電極組合件可能還沒和該電解液接觸就展開,有鑒於此現象,可將該壓敏性黏合劑層11的剝離強度下限控制為5gf/25mm或
更多、10gf/25mm或更多、20gf/25mm或更多、25gf/25mm或更多、45gf/25mm或更多、65gf/25mm或更多、70gf/25mm或更多、80gf/25mm或更多、85gf/25mm或更多、或90gf/25mm或更多。該電極組合件的外周圍表面可為,例如,分隔膜,而該剝離強度可為,例如,對該分隔膜的剝離強度。當該壓敏性黏合劑層11對該電極組合件或該分隔膜的剝離強度是在前述範圍內時,即使在該壓敏性黏合劑層11黏著在該電極組合件的外周圍表面時仍可具有在和該電解液接觸時脫離的合適初始剝離強度,及在該密封帶10和該電解液接觸時形成具有特定表面粗糙度之立體結構,所以該密封帶10可有效率地脫離該電極組合件。
該壓敏性黏合劑層11與該電解液反應,所以該壓敏性黏合劑層11與該電極組合件22之間的剝離強度可能減低。由於該剝離強度減低,如上文所述,該壓敏性黏合劑層11可脫離該電極組合件22。如上文所述,該密封帶10脫離該電極組合件22可引起該電極組合件22的等方向性體積膨脹與收縮而可防止斷路現象,在該斷路現象中電極斷開。
該密封帶10之壓敏性黏合劑層11在和電解液接觸時可膨脹且如上文所述形成立體結構。
該二次電池20可藉由下列方式而製造:例如用該密封帶10黏著該電極組合件22,將該電極組合件22收置於罐21中,將電解液注入該罐21,及密封該罐21。
該電極組合件22之類型沒有特別限制,且可為該技術領域內一般所用的組合件中的任一種。在一實例中,該電極組合件22可為用於二次電池20,例如,鋰二次電池的電極組合件22。
該電極組合件22可包含正極板、負極板、與配置於該正極板與該負極板之間的分隔膜,而在該方法中,可利用該壓敏性黏合劑層11將該密封帶黏著在該電極組合件22的外周圍表面。在某些情形下可將該電極組合件22捲成果凍捲形狀。
該正極板可包含由具極佳導電性之金屬薄板等組成的正極電流集極;與被塗覆於該正極電流集極表面的正極活性材料層。此外,在該正極板二端形成沒塗覆該正極活性材料層的區域,而從該電極組合件22向上凸出或向下凸出預定長度的正極翼片可黏著在該區域。該正極翼片可使該電極組合件22電連接該電池的另一部份。
此外,該負極板可包含由導電性金屬薄板等組成的負極電流集極;與被塗覆於該負極電流集極表面的負極活性材料層。此外,類似該正極板,在該負極板二端形成沒塗覆該負極活性材料層的區域,而從該電極組合件22向上凸出或向下凸出預定長度的負極翼片可黏著在該區域。該使電極組合件22電連接該電池的另一部份的負極翼片可黏著在該區域。
此外,該電極組合件22另外包含形成於該電極組合件22上面與/或下面以防止和蓋組合件或圓柱形罐
21接觸的絕緣板。
該密封帶10可圍繞黏著於該外周圍表面,而該外周圍表面包含該電極組合件22的外周圍表面之分隔膜末端所在的閉合部分。此外,該密封帶10可覆蓋黏著於該電極組合件22的外周圍表面之總面積中的至少30%或更多,且該電極組合件22之外周圍表面上下端可被黏著以使得該組合件外露。
容納該電極組合件22的罐21之類型沒有特別限制,例如可為該技術領域內已知的圓柱形罐21。
此外,該電解液類型,其對使該密封帶10之壓敏性黏合劑層11變形,例如,膨脹而言是液體,沒有特別限制,且根據該電池類型而使用該技術領域內已知的電解液。例如,當該電池是鋰二次電池時,該電解液可包含,例如,非水性有機溶劑與鋰鹽。該鋰鹽可溶於該有機溶劑以充當該電池中的鋰離子來源,且可有助於該正極與該負極之間的鋰離子遷移。該作為支持電解質鹽的鋰鹽可包含下列中的一者或至少二者:LiPF6、LiBF4、LiSbF6、LiAsF6、LiCF3SO3、LiN(CF3SO2)3、Li(CF3SO2)2N、LiC4F9SO3、LiClO4、LiAlO4、LiAlCl4、LiN(CxF2x+1SO2)(CyF2y+1SO2)(其中x與y是自然數)、LiCl、LiI、與雙草酸硼酸鋰。在該電解液中的鋰鹽濃度可根據彼之用途而改變,且一般可為0.1至2.0M。此外,該有機溶劑可充當介質,在該介質中參與該電池之電化學反應的離子可遷移,且可為,但不限於,例如,下列中的
一者或至少二者:苯、甲苯、氟苯、1,2-二氟苯、1,3-二氟苯、1,4-二氟苯、1,2,3-三氟苯、1,2,4-三氟苯、氯苯、1,2-二氯苯、1,3-二氯苯、1,4-二氯苯、1,2,3-三氯苯、1,2,4-三氯苯、碘苯、1,2-二碘苯、1,3-二碘苯、1,4-二碘苯、1,2,3-三碘苯、1,2,4-三碘苯、氟甲苯、1,2-二氟甲苯、1,3-二氟甲苯、1,4-二氟甲苯、1,2,3-三氟甲苯、1,2,4-三氟甲苯、氯甲苯、1,2-二氯甲苯、1,3-二氯甲苯、1,4-二氯甲苯、1,2,3-三氯甲苯、1,2,4-三氯甲苯、碘甲苯、1,2-二碘甲苯、1,3-二碘甲苯、1,4-二碘甲苯、1,2,3-三碘甲苯、1,2,4-三碘甲苯、R-CN(其中R是具2至50個碳原子的直鏈、支鏈、或環狀烴基團,該烴基團包含雙鍵、芳香環、或醚鍵)、二甲基甲醯胺、二甲基乙酸酯(dimethylacetate)、二甲苯、環己烷、四氫呋喃、2-甲基四氫呋喃、環己酮、乙醇、異丙醇、碳酸二甲酯、碳酸乙基甲酯、碳酸二乙酯、碳酸甲基丙酯、碳酸丙烯酯、丙酸甲酯、丙酸乙酯、乙酸甲酯、乙酸乙酯、乙酸丙酯、二甲氧基乙烷、1,3-二茂烷、二乙二醇二甲醚、四乙二醇二甲醚、碳酸乙烯酯、碳酸丙烯酯、碳酸二甲酯、γ-丁內酯、環丁碸、戊內酯、丁位癸內酯、與甲羥戊酸內酯。
在一實例中,該密封帶10之長度可為該電極組合件22的外周圍表面之長度的50至90%,較佳是60至80%。該密封帶10覆蓋黏著於該電極組合件22的外周圍表面,可決定該密封帶10之長度以使在電池中的實佔空間減到最少。具體地說,當該密封帶10之長度太短
時,該凝膠化的密封帶10對該電池罐21之內表面的緩衝效果及摩擦力增加不夠大,所以很難得到期望的效果。反之,當該密封帶10之長度太長時,在該電池罐21中的實佔空間變得不必要的大,導致和具有相同規格的其他電池罐相比降低的容量。
此外,如圖2所示,該二次電池20可為圓柱形鋰離子二次電池,其可具有高價格效率與高電容量。
用於黏著電極組合件的密封帶,其可藉由和電解液接觸而脫離該電極組合件,其中壓敏性黏合劑層膨脹引起在二次電池重複充電及放電過程中該電極組合件的等方向性體積膨脹與收縮而防止斷路現象,在該斷路現象中電極斷開。
10‧‧‧密封帶
11‧‧‧壓敏性黏合劑層
12‧‧‧基底層
20‧‧‧二次電池
21‧‧‧罐
22‧‧‧電極組合件
圖1是本發明之示範密封帶的橫剖面示意圖;圖2是本發明之示範二次電池的示意圖;圖3是在本發明之實施例1的密封帶和電解液接觸後所形成的立體結構之影像;圖4是在本發明之比較例1的密封帶和電解液接觸後的表面之影像;圖5是在本發明之實施例4的密封帶和電解
液接觸後所形成的立體結構之橫剖面影像;圖6是本發明之比較例1的密封帶在和電解液接觸後的橫剖面影像;圖7是藉由將在本發明之實施例4的密封帶和電解液接觸後所形成的立體結構之橫剖面數學模式化所得到的表面粗糙度圖;及圖8是藉由將本發明之比較例1的密封帶在和電解液接觸後的橫剖面數學模式化所得到的表面粗糙度圖。
在下文,將參照實施例與比較例詳細說明本發明,但本發明之範圍不限於下列實施例。
藉由下列方法評估存在於該實施例與比較例中的物理性質。
在下列條件下使用GPC測量壓敏性黏合劑組成物之重量平均分子量。使用Agilent Technologies製造的標準聚苯乙烯以得到校正曲線,及將測量結果進行轉換。
測量儀器:Agilent GPC(Agilent 1200
series,U.S.)
管柱:Two connected PL mixed B
管柱溫度:40℃
洗提液:四氫呋喃
流率:1.0mL/分
濃度:~2mg/mL(注入100μL)
將密封帶裁切成25mm×200mm(寬度×長度)而製備樣本。然後使用2kg橡膠滾輪利用壓敏性黏合劑層將該樣本黏著在玻璃板上,儲存在室溫下約2小時,利用拉伸試驗機在以剝離速度5mm/秒及剝離角度180度剝去該密封帶同時測量剝離強度。
將密封帶裁切成25mm×200mm(寬度×長度)而製備樣本。然後使用2kg橡膠滾輪利用壓敏性黏合劑層將該樣本黏著在電極組合件的分隔膜(以SRS烯烴為基礎的分隔膜)上,儲存在室溫下約2小時,利用拉伸試驗機在以剝離速度5mm/秒及剝離角度180度剝去該密封帶同時測量剝離強度。當該剝離強度超過400gf/25mm時,該分隔膜分離且破裂,所以不可能測量該剝離強度。
將藉由該實施例或比較例之方法所製備的樣本浸漬於以碳酸酯為基礎的電解液中,以密封狀態保持在室溫下1日,從該電解液取出樣本,使用數位相機為表面形狀照相。該影像請參見圖3與4。
此外,觀測該密封帶之表面形狀,根據下列標準評估是否觀察到立體結構:
○:用肉眼清楚觀察到立體結構。
△:用肉眼沒觀察到立體結構。
×:沒有立體結構。
將藉由實施例4與比較例1之方法所製備的樣本浸漬於以碳酸酯為基礎的電解液中,以密封狀態保持在室溫下1日,從該電解液取出樣本,使用光學顯微鏡為該樣本的橫剖面照相,該影像請參見圖5與6。在實施例4中,由於壓敏性黏合劑層吸收電解液而形成立體結構,該壓敏性黏合劑層有某種程度的模糊,所以清楚觀察到與透明PET基底的界面。但是在比較例1中,該壓敏性黏合劑層沒吸收該電解液,沒有模糊,所以很難用肉眼觀察到在透明壓敏性黏合劑層與PET基底之間的界面。
計算出實施例4或比較例1之樣本的橫剖面
相片之像素值,利用標尺上的刻度將像素數目轉換為長度及進行數學模式化而分別得到圖7與8中所示之表面粗糙度曲線,及藉由下文所述之方法計算出中心線平均粗糙度值。具體地說,在該粗糙度曲線中,沿平均線方向擷取約2.3mm的標準長度(L),平均線方向是以x軸表示,垂直方向是以y軸表示,粗糙度曲線是以y=f(x)表示,及從方程式1得到中心線平均粗糙度值:
將藉由該實施例或比較例之方法所製備的密封帶樣本(寬度×長度=50mm×57mm)黏著在電極組合件(長度60mm×直徑17mm)上,將該電極組合件浸漬於以碳酸酯為基礎的電解液中,觀測該密封帶脫離該電極組合件表面的現象,藉由測量寬度與長度而計算出脫離的面積,然後計算出該脫離的面積對黏著在該電極組合件的面積(625mm2)的比率。
藉由下列方式裝配圓柱形電池:將藉由該實施例或比較例之方法所製備的密封帶樣本黏著在電極組合
件上,將該電極組合件插入外罐中,將電解液注入該外罐,及密封該外罐。製備四個如前述所製備的圓柱形電池,對各樣本重複充電與放電10次,拆卸該電池取出該電極組合件,在拆卸正極/分隔膜/負極/分隔膜的同時,觀測到裂痕之形成。
將由58重量份的丙烯酸正丁酯(n-BA)、40重量份的丙烯酸甲氧基乙酯(MEA)、2重量份的丙烯酸羥丁酯(HBA)、與0.02重量份的作為鏈轉移劑之正十二硫醇組成之單體混合物放入1000cc反應容器中,在該反應容器中使氮氣回流且設有冷卻系統以容易地控制溫度,加入150重量份的乙酸乙酯(EAc)作為溶劑。然後在60℃下用氮氣讓混合物冒泡60分鐘以除去氧氣,然後將所得混合物保持於60℃。把該混合物進行均勻化,加入0.04重量份的偶氮二異丁腈(AIBN)作為反應引發劑。使該混合物反應8小時,藉此製備重量平均分子量為800,000的聚合物(A1)。在這裡,該重量份是以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為700,000的聚合物(A2),但是加入40重量份的丙烯酸甲氧基乙氧基乙酯(MOEOEA),而不是加
入製備例1中所使用的40重量份的丙烯酸甲氧基乙酯。在這裡,該重量份是以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為600,000的聚合物(A3),但是加入40重量份的丙烯酸乙氧基乙氧基乙酯(EOEOEA),而不是加入製備例1中所使用的40重量份的丙烯酸甲氧基乙酯。在這裡,該重量份是以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為780,000的聚合物(A4),但是加入68重量份的n-BA、30重量份的MEA、與2重量份的HBA,而不是加入製備例1中所使用的58重量份的n-BA、40重量份的MEA、與2重量份的HBA。在這裡,該重量份是以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為790,000的聚合物(A5),但是加入48重量份的n-BA、50重量份的MEA、與2重量份的HBA,而不是加入製備例1中所使用的58重量份的n-BA、40重量份的MEA、與2重量份的HBA。在這裡,該重量份是
以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為750,000的聚合物(A6),但是加入38重量份的n-BA、60重量份的MEA、與2重量份的HBA,而不是加入製備例1中所使用的58重量份的n-BA、40重量份的MEA、與2重量份的HBA。在這裡,該重量份是以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為730,000的聚合物(A7),但是加入28重量份的n-BA、70重量份的MEA、與2重量份的HBA,而不是加入製備例1中所使用的58重量份的n-BA、40重量份的MEA、與2重量份的HBA。在這裡,該重量份是以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為800,000的聚合物(B1),但是加入由98重量份的丙烯酸正丁酯與2重量份的丙烯酸羥丁酯組成之單體混合物,而不加入製備例1中所使用的丙烯酸甲氧基乙酯。在這裡,該重量份是以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為800,000的聚合物(B2),但是加入由93重量份的丙烯酸正丁酯與7重量份的丙烯酸組成之單體混合物,而不加入製備例1中所使用的丙烯酸甲氧基乙酯。在這裡,該重量份是以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為790,000的聚合物(B3),但是加入88重量份的n-BA、10重量份的MEA、與2重量份的HBA,而不是加入製備例1中所使用的58重量份的n-BA、40重量份的MEA、與2重量份的HBA。在這裡,該重量份是以wt%表示。
藉由同於製備例1中所描述之方法製備重量平均分子量為800,000的聚合物(B4),但是加入78重量份的n-BA、20重量份的MEA、與2重量份的HBA,而不是加入製備例1中所使用的58重量份的n-BA、40重量份的MEA、與2重量份的HBA。在這裡,該重量份是以wt%表示。
將0.3重量份的作為以異氰酸酯為基礎之多官能性交聯劑的三甲醇基丙烷之二異氰酸甲苯酯加成物加入乙酸乙酯溶液中,該重量份係相對於100重量份的該所製備之聚合物(A1),考慮塗布性能而稀釋到合適濃度,及均勻地混合。
在聚對苯二甲酸乙二醇酯(PET)膜(厚度:19μm)之一表面上塗覆實施例1中所製備的壓敏性黏合劑組成物及乾燥,藉此形成厚度為6μm的均勻塗層。接著將離型膜層合於該塗層上,在定溫(25℃)與定濕度條件下老化3日,藉此製備密封帶。
將密封帶覆蓋黏著於果凍捲形狀的電極組合件(橫剖面直徑:17.2mm)外周圍面積中的約50%,該電極組合件包含負極、正極、與分隔膜,將該電極組合件插入圓柱形罐(橫剖面直徑:17.5mm)中。接著將以碳酸酯為基礎的電解液注入該圓柱形罐及密封,於是電池完成。
在該密封帶製備中,如表1與2所示地改變該壓敏性黏合劑層之組成比例,及藉由同於實施例1中所描述之方法而形成密封帶與電池。
測量實施例與比較例之物理性質且將結果匯總列出於表3及4中。
10‧‧‧密封帶
11‧‧‧壓敏性黏合劑層
12‧‧‧基底層
Claims (20)
- 一種密封帶,其包含:基底層;與壓敏性黏合劑層,其形成於該基底層的一表面上,該壓敏性黏合劑層藉由在和電解液接觸後吸收該電解液且膨脹而形成三維立體結構,及具有100至250μm的中心線平均粗糙度,該中心線平均粗糙度乃在和該電解液接觸24小時後測定。
- 如申請專利範圍第1項之密封帶,其中該壓敏性黏合劑層包含壓敏性黏合劑組成物的固化產物,該壓敏性黏合劑組成物包含一聚合物,其具有由(甲基)丙烯酸酯單體、如式1所示之單體、與含可交聯的官能基之可交聯的單體衍生之聚合單元:
- 如申請專利範圍第2項之密封帶,其中該如式1所示之單體是如式2所示之單體:
- 如申請專利範圍第2項之密封帶,其中該如式1所示之單體是選自由下列所組成之組群中的至少一者:(甲基)丙烯酸甲氧基乙酯、(甲基)丙烯酸甲氧基乙氧基乙酯、(甲基)丙烯酸乙氧基乙氧基乙酯、乙氧基三乙二醇(甲基)丙烯酸酯、聚乙二醇(甲基)丙烯酸酯、聚乙二醇甲醚(甲基)丙烯酸酯、乙氧基化壬基酚(甲基)丙烯酸酯、丙氧基化壬基酚(甲基)丙烯酸酯、乙氧基化苯酚(甲基)丙烯酸酯、與聚丙二醇(甲基)丙烯酸酯。
- 如申請專利範圍第2項之密封帶,其中該聚合物包含30至300重量份的如式1所示之單體,該重量份係相對於100重量份的聚合形式的(甲基)丙烯酸酯單體。
- 如申請專利範圍第2項之密封帶,其中該可交聯的單體包含至少一種選自由下列所組成的組群之可交聯的官能基:羥基、羧基、環氧基、環氧丙基、異氰酸酯基、醯胺基、胺基、與烷氧矽烷基。
- 如申請專利範圍第2項之密封帶,其中該聚合物包含0.1至10重量份的該可交聯的單體,該重量份係相對於100重量份的聚合形式的該(甲基)丙烯酸酯單體。
- 如申請專利範圍第2項之密封帶,其中該壓敏性黏合劑組成物另外包含交聯劑。
- 如申請專利範圍第8項之密封帶,其中該交聯劑含量是0.001至10重量份,該重量份係相對於100重量份的該總組成物。
- 如申請專利範圍第8項之密封帶,其中該交聯劑包含選自由下列所組成之組群中的至少一者:以異氰酸酯為基礎的化合物、以環氧基為基礎的化合物、以氮雜環丙烷為基礎的化合物、與以金屬螯合物為基礎的化合物。
- 如申請專利範圍第1項之密封帶,其中該基底層是選自由下列所組成之組群中的至少一者:丙烯酸膜、聚烯烴膜、聚醯胺膜、聚碳酸酯膜、聚胺基甲酸酯膜、乙酸纖維素膜、與聚酯膜。
- 如申請專利範圍第11項之密封帶,其中該聚酯膜是選自由下列所組成之組群中的至少一者:聚對苯二甲酸乙二醇酯膜、聚萘二甲酸乙二醇酯膜、與聚對苯二甲酸丁二醇酯膜。
- 如申請專利範圍第1項之密封帶,其中該基底層厚度為10至200μm。
- 如申請專利範圍第1項之密封帶,其中該壓敏性黏合劑層厚度為2至100μm。
- 如申請專利範圍第1項之密封帶,其中該壓敏性黏合劑層在室溫下對玻璃的剝離強度為370gf/25mm或更少,該剝離強度是在剝離速度5mm/秒及剝離角度180度 條件下測量。
- 如申請專利範圍第1項之密封帶,其中該密封帶黏著在電極組合件的外周圍表面,其中在該密封帶黏著電極組合件的外周圍表面之面積中有50%或更多在和該電解液接觸後脫離。
- 一種二次電池,其包含:電極組合件,其包含正極板、負極板、與配置於該正極板與該負極板之間的分隔膜;及如申請專利範圍第1項之密封帶,其乃利用壓敏性黏合劑層黏著該電極組合件的外周圍表面。
- 如申請專利範圍第17項之二次電池,其中該密封帶圍繞黏著於該外周圍表面,而該外周圍表面包含該電極組合件的外周圍表面之分隔膜末端所在的閉合部分。
- 如申請專利範圍第17項之二次電池,其中該壓敏性黏合劑層在室溫下對分隔膜的剝離強度為1200gf/25mm或更少,該剝離強度是在剝離速度5mm/秒及剝離角度180度條件下測量。
- 如申請專利範圍第17項之二次電池,其具有圓柱形狀。
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KR20150020146A (ko) | 2015-02-25 |
EP3020777B1 (en) | 2020-06-03 |
KR20150020147A (ko) | 2015-02-25 |
TWI558780B (zh) | 2016-11-21 |
US10435597B2 (en) | 2019-10-08 |
EP3023470A1 (en) | 2016-05-25 |
TWI581975B (zh) | 2017-05-11 |
US10619079B2 (en) | 2020-04-14 |
PL3020777T3 (pl) | 2021-01-25 |
CN105793371B (zh) | 2019-02-15 |
KR101742357B1 (ko) | 2017-05-31 |
EP3020777A1 (en) | 2016-05-18 |
US20160186021A1 (en) | 2016-06-30 |
KR101807909B1 (ko) | 2017-12-12 |
EP3023470B1 (en) | 2020-06-10 |
TW201525091A (zh) | 2015-07-01 |
CN105637057B (zh) | 2018-06-08 |
EP3023470A4 (en) | 2017-06-14 |
JP6210579B2 (ja) | 2017-10-11 |
JP2016528357A (ja) | 2016-09-15 |
WO2015023152A1 (ko) | 2015-02-19 |
WO2015023153A1 (ko) | 2015-02-19 |
JP2016532752A (ja) | 2016-10-20 |
EP3020777A4 (en) | 2017-03-15 |
US20160177136A1 (en) | 2016-06-23 |
PL3023470T3 (pl) | 2020-11-16 |
JP6222506B2 (ja) | 2017-11-01 |
CN105793371A (zh) | 2016-07-20 |
CN105637057A (zh) | 2016-06-01 |
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