CN115028827A - 一种苯基聚醚二元醇及其制备方法、热塑性聚氨酯、锂电池溶胀胶带 - Google Patents
一种苯基聚醚二元醇及其制备方法、热塑性聚氨酯、锂电池溶胀胶带 Download PDFInfo
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- CN115028827A CN115028827A CN202210676887.0A CN202210676887A CN115028827A CN 115028827 A CN115028827 A CN 115028827A CN 202210676887 A CN202210676887 A CN 202210676887A CN 115028827 A CN115028827 A CN 115028827A
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- Prior art keywords
- phenyl
- polyether diol
- thermoplastic polyurethane
- polyether
- parts
- 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
- 239000004721 Polyphenylene oxide Substances 0.000 title claims abstract description 102
- 229920000570 polyether Polymers 0.000 title claims abstract description 102
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 title claims abstract description 68
- 239000004433 Thermoplastic polyurethane Substances 0.000 title claims abstract description 58
- 229920002803 thermoplastic polyurethane Polymers 0.000 title claims abstract description 58
- 230000008961 swelling Effects 0.000 title claims abstract description 47
- 150000002009 diols Chemical class 0.000 title claims abstract description 45
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 25
- 239000002390 adhesive tape Substances 0.000 title abstract description 24
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 75
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 125000005442 diisocyanate group Chemical group 0.000 claims description 27
- 239000004970 Chain extender Substances 0.000 claims description 25
- 239000002253 acid Substances 0.000 claims description 23
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 23
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 18
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 16
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 16
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims description 13
- 150000003384 small molecules Chemical group 0.000 claims description 13
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical group CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 10
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims description 9
- CHIHQLCVLOXUJW-UHFFFAOYSA-N benzoic anhydride Chemical compound C=1C=CC=CC=1C(=O)OC(=O)C1=CC=CC=C1 CHIHQLCVLOXUJW-UHFFFAOYSA-N 0.000 claims description 8
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 8
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 claims description 7
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 claims description 5
- 229940035437 1,3-propanediol Drugs 0.000 claims description 5
- 229940043375 1,5-pentanediol Drugs 0.000 claims description 5
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims description 5
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 4
- QWGRWMMWNDWRQN-UHFFFAOYSA-N 2-methylpropane-1,3-diol Chemical compound OCC(C)CO QWGRWMMWNDWRQN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- FOTKYAAJKYLFFN-UHFFFAOYSA-N decane-1,10-diol Chemical compound OCCCCCCCCCCO FOTKYAAJKYLFFN-UHFFFAOYSA-N 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 22
- 239000000463 material Substances 0.000 abstract description 12
- 230000002522 swelling effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 35
- 238000006243 chemical reaction Methods 0.000 description 25
- 239000000203 mixture Substances 0.000 description 24
- 238000002156 mixing Methods 0.000 description 21
- 239000002994 raw material Substances 0.000 description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 9
- 239000011261 inert gas Substances 0.000 description 8
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
- -1 lithium hexafluorophosphate Chemical group 0.000 description 4
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 3
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 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 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- RKLJSBNBBHBEOT-UHFFFAOYSA-N (3-hydroxy-2,2-dimethylpropanoyl) 3-hydroxy-2,2-dimethylpropanoate Chemical compound OCC(C)(C)C(=O)OC(=O)C(C)(C)CO RKLJSBNBBHBEOT-UHFFFAOYSA-N 0.000 description 2
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 2
- CTNICFBTUIFPOE-UHFFFAOYSA-N 2-(4-hydroxyphenoxy)ethane-1,1-diol Chemical compound OC(O)COC1=CC=C(O)C=C1 CTNICFBTUIFPOE-UHFFFAOYSA-N 0.000 description 2
- RWLALWYNXFYRGW-UHFFFAOYSA-N 2-Ethyl-1,3-hexanediol Chemical compound CCCC(O)C(CC)CO RWLALWYNXFYRGW-UHFFFAOYSA-N 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 2
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- PMMYEEVYMWASQN-IMJSIDKUSA-N cis-4-Hydroxy-L-proline Chemical compound O[C@@H]1CN[C@H](C(O)=O)C1 PMMYEEVYMWASQN-IMJSIDKUSA-N 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- VKIRRGRTJUUZHS-UHFFFAOYSA-N cyclohexane-1,4-diamine Chemical compound NC1CCC(N)CC1 VKIRRGRTJUUZHS-UHFFFAOYSA-N 0.000 description 2
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 2
- GTZOYNFRVVHLDZ-UHFFFAOYSA-N dodecane-1,1-diol Chemical compound CCCCCCCCCCCC(O)O GTZOYNFRVVHLDZ-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- WCVRQHFDJLLWFE-UHFFFAOYSA-N pentane-1,2-diol Chemical compound CCCC(O)CO WCVRQHFDJLLWFE-UHFFFAOYSA-N 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- 229940083957 1,2-butanediol Drugs 0.000 description 1
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 description 1
- AZYRZNIYJDKRHO-UHFFFAOYSA-N 1,3-bis(2-isocyanatopropan-2-yl)benzene Chemical compound O=C=NC(C)(C)C1=CC=CC(C(C)(C)N=C=O)=C1 AZYRZNIYJDKRHO-UHFFFAOYSA-N 0.000 description 1
- CDMDQYCEEKCBGR-UHFFFAOYSA-N 1,4-diisocyanatocyclohexane Chemical compound O=C=NC1CCC(N=C=O)CC1 CDMDQYCEEKCBGR-UHFFFAOYSA-N 0.000 description 1
- QGLRLXLDMZCFBP-UHFFFAOYSA-N 1,6-diisocyanato-2,4,4-trimethylhexane Chemical compound O=C=NCC(C)CC(C)(C)CCN=C=O QGLRLXLDMZCFBP-UHFFFAOYSA-N 0.000 description 1
- BGOWJEZARMMSTD-UHFFFAOYSA-N 1-[3-[2-(2-hydroxyethoxy)ethyl]phenyl]ethanol Chemical compound OCCOCCC=1C=C(C=CC=1)C(C)O BGOWJEZARMMSTD-UHFFFAOYSA-N 0.000 description 1
- GUXGIGOQOIDDHU-UHFFFAOYSA-N 1-[4-[2-(2-hydroxyethoxy)ethyl]phenyl]ethanol Chemical compound OCCOCCC1=CC=C(C=C1)C(C)O GUXGIGOQOIDDHU-UHFFFAOYSA-N 0.000 description 1
- DHTGRDDBCWWKQJ-UHFFFAOYSA-N 2-(2,2-dihydroxyethoxy)ethane-1,1-diol Chemical compound OC(O)COCC(O)O DHTGRDDBCWWKQJ-UHFFFAOYSA-N 0.000 description 1
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 1
- DSKYSDCYIODJPC-UHFFFAOYSA-N 2-butyl-2-ethylpropane-1,3-diol Chemical compound CCCCC(CC)(CO)CO DSKYSDCYIODJPC-UHFFFAOYSA-N 0.000 description 1
- VYZKQGGPNIFCLD-UHFFFAOYSA-N 3,3-dimethylhexane-2,2-diol Chemical compound CCCC(C)(C)C(C)(O)O VYZKQGGPNIFCLD-UHFFFAOYSA-N 0.000 description 1
- BEJQXBXPRXFJDP-UHFFFAOYSA-N 3-(3,3-dihydroxypropoxy)propane-1,1-diol Chemical compound OC(O)CCOCCC(O)O BEJQXBXPRXFJDP-UHFFFAOYSA-N 0.000 description 1
- RUQNFHWKALNWAE-UHFFFAOYSA-N 3-(3-hydroxyphenoxy)propane-1,1-diol Chemical compound OC(CCOC1=CC(O)=CC=C1)O RUQNFHWKALNWAE-UHFFFAOYSA-N 0.000 description 1
- SXFJDZNJHVPHPH-UHFFFAOYSA-N 3-methylpentane-1,5-diol Chemical compound OCCC(C)CCO SXFJDZNJHVPHPH-UHFFFAOYSA-N 0.000 description 1
- BUUSNVSJZVGMFY-UHFFFAOYSA-N 4-ethylheptane-3,3-diol Chemical compound CCCC(CC)C(O)(O)CC BUUSNVSJZVGMFY-UHFFFAOYSA-N 0.000 description 1
- WUKNPIYSKBLCQI-UHFFFAOYSA-N CC(C=C1)=CC=C1C1=CC=C(C)C=C1.N=C=O.N=C=O Chemical compound CC(C=C1)=CC=C1C1=CC=C(C)C=C1.N=C=O.N=C=O WUKNPIYSKBLCQI-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- INWVTRVMRQMCCM-UHFFFAOYSA-N N=C=O.N=C=O.C=1C=CC=CC=1C(C)(C)C1=CC=CC=C1 Chemical compound N=C=O.N=C=O.C=1C=CC=CC=1C(C)(C)C1=CC=CC=C1 INWVTRVMRQMCCM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- JGCWKVKYRNXTMD-UHFFFAOYSA-N bicyclo[2.2.1]heptane;isocyanic acid Chemical compound N=C=O.N=C=O.C1CC2CCC1C2 JGCWKVKYRNXTMD-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- BMRWNKZVCUKKSR-UHFFFAOYSA-N butane-1,2-diol Chemical compound CCC(O)CO BMRWNKZVCUKKSR-UHFFFAOYSA-N 0.000 description 1
- 235000019437 butane-1,3-diol Nutrition 0.000 description 1
- OWBTYPJTUOEWEK-UHFFFAOYSA-N butane-2,3-diol Chemical compound CC(O)C(C)O OWBTYPJTUOEWEK-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- TWLCPLJMACDPFF-UHFFFAOYSA-N cyclohexane;1,2-diisocyanatoethane Chemical compound C1CCCCC1.O=C=NCCN=C=O TWLCPLJMACDPFF-UHFFFAOYSA-N 0.000 description 1
- GMAYNBHUHYFCPZ-UHFFFAOYSA-N cyclohexyl-(4,4-dimethylcyclohexyl)methanediamine Chemical compound C1CC(C)(C)CCC1C(N)(N)C1CCCCC1 GMAYNBHUHYFCPZ-UHFFFAOYSA-N 0.000 description 1
- KEIQPMUPONZJJH-UHFFFAOYSA-N dicyclohexylmethanediamine Chemical compound C1CCCCC1C(N)(N)C1CCCCC1 KEIQPMUPONZJJH-UHFFFAOYSA-N 0.000 description 1
- 229940113120 dipropylene glycol Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-N 0.000 description 1
- 229940100573 methylpropanediol Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- ZETYUTMSJWMKNQ-UHFFFAOYSA-N n,n',n'-trimethylhexane-1,6-diamine Chemical compound CNCCCCCCN(C)C ZETYUTMSJWMKNQ-UHFFFAOYSA-N 0.000 description 1
- 229940117969 neopentyl glycol Drugs 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 229960004063 propylene glycol Drugs 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
- C08G65/48—Polymers modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/331—Polymers modified by chemical after-treatment with organic compounds containing oxygen
- C08G65/332—Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides, or esters thereof
- C08G65/3324—Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides, or esters thereof cyclic
- C08G65/3326—Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides, or esters thereof cyclic aromatic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Abstract
Description
技术领域
本发明属于热塑性聚氨酯材料领域,具体涉及一种苯基聚醚二元醇、热塑性聚氨酯以及锂电池溶胀胶带。
背景技术
在锂离子圆柱电池使用过程中,由于强震动工况的出现,对电池造成了长时间、高频率和大振幅的震动。圆柱电池由内部电芯极卷和外壳组成,当震动传递至内部电芯极卷时,极卷也随之震动并发生滑移,由于电芯极卷震动传递和吸收能力差,经常导致电芯损坏,电池内阻升高,电压降低,从而极大地影响了电池的使用。所以,亟需引入具有减缓或传递震动的耐冲击层对电池电芯进行保护。现有的解决方法是,将一种溶胀胶带贴于电芯表面,当胶带接触电解液时会发生溶胀并充满整个空隙,从而起到固定电芯、抵抗外部冲击的作用,极大地提升了电池的安全性能和使用寿命。
CN104798223A公开了一种填充间隙用溶胀胶带,选用厚度约为40μm的热塑性聚氨酯(TPU)作为基底层,丙烯酸类压敏胶作为粘合层,制备成溶胀胶带,在碳酸酯类电解液中溶胀成三维形状,能有效填充电极组件与壳体内壁之间的空隙,并固定电极组件,提升电池的安全性能。
CN113072889A公开了一种圆柱电池专用厚度溶胀胶带及其制备方法,将聚乙酸乙烯酯(PVAC)、SBS、氨基树脂固化剂、有机酸催化剂制备成混合溶液,采用涂布、烘干固化的方式制备成30-50μm的薄膜,与压敏胶黏剂复合制备成溶胀胶带,胶带在电解液中溶胀后可以全方位的填充圆柱电池的电芯与圆柱形壳体之间的空隙,实现对于圆柱电池的电芯与圆柱形壳体的有效固定,避免因震动或冲击给电池带来的损伤。
目前锂电池用溶胀胶带虽然具有良好的溶胀性能,能实现电芯与圆柱形壳体的有效固定,但是在长时间高温条件下,溶胀胶带在电解液中易于溶解,导致电池的使用寿命短,所以制备一种既具有良好的溶胀性能,又具有优异的耐溶解性能的溶胀胶带具有重要意义。
发明内容
本发明的目的在于提供一种苯基聚醚二元醇,将其用于制备热塑性聚氨酯。其膜制品在锂电池电解液中具有良好的溶胀性能,且高温长周期不溶解、不脆裂、力学性能维持良好,有效解决了现有溶胀胶带长时间高温易于溶解,使用寿命短等问题。
为达到以上发明目的,本发明的技术方案如下:
一种苯基聚醚二元醇,其结构式示意为:
其中,其中R1为苯基结构,R2为聚醚二元醇的残基,优选所述R2是由2-10个碳的直链或支链二元醇聚合而成的聚醚二元醇的残基。
本发明所述的聚醚二元醇的数均分子量为200~4000g/mol,优选400-2000g/mol。
本发明所述苯基聚醚二元醇的羟值为5-180mgKOH/g,优选10-140mgKOH/g;酸值为0.01-0.6mgKOH/g,优选0.01-0.3mgKOH/g。
一种本发明所述苯基聚醚二元醇的制备方法,包括以下步骤:将聚醚二元醇、苯基二酸或苯基酸酐在160-220℃反应3-5h,升温至210-260℃继续反应4-6h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇。
本发明所述的聚醚二元醇包括但不限于聚乙二醇、聚1,3-丙二醇、聚1,4-丁二醇、聚1,5-戊二醇、聚1,6-己二醇、聚2-甲基-1,3-丙二醇、聚新戊二醇、聚1,10-癸二醇中的一种或多种。
本发明中,所述苯基二酸为邻苯二甲酸、间苯二甲酸、对苯二甲酸中的一种或多种,所述苯基酸酐为苯酐。
本发明中,所述聚醚二元醇与苯基二酸或苯基酸酐的摩尔比为1~2.6:1。
一种锂电池溶胀胶带用热塑性聚氨酯,制备原料包含以下组分,按总重量为100份计:
(1)二异氰酸酯:20-58份,优选24-48份;
(2)苯基聚醚二元醇:19~74份,优选31~68份;
(3)小分子扩链剂:5-25份,优选8-21份。
本发明中,所述二异氰酸酯为脂肪族、脂环族和芳香族二异氰酸酯中的一种或多种,优选甲苯二异氰酸酯、二苯基甲烷二异氰酸酯、异佛尔酮二异氰酸酯、六亚甲基二异氰酸酯、二环己基甲烷二异氰酸酯、对苯二异氰酸酯、萘二异氰酸酯、1,4-环己烷二异氰酸酯、苯二亚甲基二异氰酸酯、环己烷二亚甲基二异氰酸酯、三甲基-1,6-六亚甲基二异氰酸酯、四甲基间苯二亚甲基二异氰酸酯、降冰片烷二异氰酸酯、二甲基联苯二异氰酸酯、甲基环己基二异氰酸酯、二甲基二苯基甲烷二异氰酸酯、赖氨酸二异氰酸酯中的至少一种;更优选甲苯二异氰酸酯、二苯基甲烷二异氰酸酯、异佛尔酮二异氰酸酯、六亚甲基二异氰酸酯、二环己基甲烷二异氰酸酯、对苯二异氰酸酯中的一种或多种。
本发明中,所述小分子扩链剂为脂肪族和/或芳香族小分子扩链剂中的一种或多种,优选乙二醇、1,4-丁二醇、一缩二乙二醇、二缩三乙二醇、1,2-丙二醇、新戊二醇、甲基丙二醇、1,6-己二醇、1,3-丙二醇、一缩二丙二醇、二缩三丙二醇、丁基乙基丙二醇、二乙基戊二醇、3-甲基-1,5-戊二醇、1,3-丁二醇、1,2-丁二醇、2,3-丁二醇、三甲基戊二醇、1,5-戊二醇、1,2-戊二醇、羟基新戊酸羟基新戊醇酯、2-乙基-1,3-己二醇、十二碳二醇、1,4-二羟甲基环己烷、1,4-环己二醇、对苯二酚二羟乙基醚、间苯二酚二羟乙基醚、间苯二酚双羟丙基醚、间苯二酚双羟丙基乙基醚、4-羟乙基氧乙基-1-羟乙基苯二醚、3-羟乙基氧乙基-1-羟乙基苯二醚、双酚A二羟乙基醚、双酚A二羟丙基醚、1,4-环己烷二胺、二氨基二环己基甲烷、三甲基己二胺、二甲基二氨基二环己基甲烷中的至少一种;更优选乙二醇、1,4-丁二醇、一缩二乙二醇、1,6-己二醇、1,3-丙二醇、一缩二丙二醇、1,5-戊二醇、1,4-环己烷二胺中的一种或多种。
本发明中,所述锂电池溶胀胶带用热塑性聚氨酯的制备方法,包括如下步骤:
1)将苯基聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)将二异氰酸酯加入步骤1)的混合物中,反应。
本发明中,步骤2)的反应温度为70~130℃。
本发明中,所述热塑性聚氨酯具有良好的力学性能,其膜制品在锂电池电解液中具有良好的溶胀性能,且高温长周期不溶解、不脆裂、力学性能维持良好。
本发明提供的技术方案具有如下有益效果:
本发明选用二异氰酸酯、苯基聚醚二元醇等作为原料,采用一步法反应制备得到一种力学性能良好的热塑性聚氨酯,并将该热塑性聚氨酯制成厚度为40±5μm的膜材料,该热塑性聚氨酯结构中,软段部分的苯基结构有利于增强软段与软段、软段和硬段之间的作用力,即提升整个分子链之间的作用力,大大增强所述膜材料对锂电池电解液的耐受性,可有效提升膜材料长期耐高温电解液性能;而结构中的聚醚组分在锂电池电解液中具有优异的溶胀性,使得膜材料在电解液中溶胀性能优异,即软段的苯基组分与聚醚组分形成协同效应,且通过控制这两组分的比例,使所制备的热塑性聚氨酯具有良好的力学性能,其膜制品在锂电池电解液中具有良好的溶胀性能,且高温长周期不溶解、不脆裂、力学性能维持良好。
具体实施方式
下面通过具体实施例对本发明做进一步说明,本发明所述实施例只是作为对本发明的说明,不限制本发明的范围。
<主要原料来源信息>
苯基二酸或苯基酸酐来自韩国爱敬;
聚醚二元醇来自巴斯夫集团;
二异氰酸酯来自万华化学;
锂电池电解液来自广州天赐高新材料股份有限公司,电解液溶剂组成,碳酸乙烯酯:碳酸丙烯酯:碳酸二乙酯=1:1:1(体积比),溶质为六氟磷酸锂
若未特别说明,实施例或对比例中所用原料均为商业渠道获得。
<主要测试方法>
酸值的测定:参考标准HG/T 2708-1995;
羟值的测定:参考标准HG/T 2709-1995;
溶解性测试:将材料制成厚度为40±5μm的非拉伸膜,裁剪成边长为a1的正方形样品,浸入电解液中,85℃环境中放置48h,观察样品在电解液中的形态:
○:代表样品形态处于膨胀状态,形态保持完好;
△:代表样品处于膨胀状态,出现溶解断裂现象,形态不能保持完好;
×:代表样品完全溶解;
实施例1
苯基聚醚二元醇的制备:
将聚醚二元醇(Polyether,聚1,4-丁二醇,分子量为1000g/mol)、苯酐(PA)按照摩尔比Polyether/PA为1.6:1加入反应釜中,在惰性气体保护下,将体系升温至180℃反应4h,随后持续升温至240℃继续反应3h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇,羟值为37.38mgKOH/g,酸值为0.04mgKOH/g。
制备锂电池溶胀胶带用热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:二苯基甲烷二异氰酸酯,45份;
(2)苯基聚醚二元醇:45份;
(3)小分子扩链剂:1,4-丁二醇,10份。
制备方法包括如下步骤:按照比例,
1)将苯基聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)在100℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
对比例1
制备热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:二苯基甲烷二异氰酸酯,45份;
(2)聚醚二元醇(Polyether,聚1,4-丁二醇,羟值为37.11mgKOH/g,酸值为0.004mgKOH/g):45份;
(3)小分子扩链剂:1,4-丁二醇,10份。
制备方法包括如下步骤:按照比例,
1)将聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)在100℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
对比例2
制备热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:二苯基甲烷二异氰酸酯,45份;
(2)苯酐二元醇(摩尔比BDO/PA=1.6:1,羟值为37.25mgKOH/g,酸值为0.13mgKOH/g,购自万华化学WHP-P533):45份;
(4)小分子扩链剂:1,4-丁二醇,10份。
制备方法包括如下步骤:按照比例,
1)将苯酐二元醇、小分子扩链剂混合均匀,得到混合物;
2)在100℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
实施例2
苯基聚醚二元醇的制备:
将聚醚二元醇(Polyether,聚新戊二醇,分子量为2000g/mol)、间苯二甲酸(IPA)按照摩尔比Polyether/IPA为2:1加入反应釜中,在惰性气体保护下,将体系升温至220℃反应5h,随后持续升温至260℃继续反应6h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇,羟值为5.14mgKOH/g,酸值为0.28mgKOH/g。
制备锂电池溶胀胶带用热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:苯二亚甲基二异氰酸酯,24份;
(2)苯基聚醚二元醇:68份;
(3)小分子扩链剂:乙二醇,8份。
制备方法包括如下步骤:按照比例,
1)将苯基聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)在80℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
实施例3
苯基聚醚二元醇的制备:
将聚醚二元醇(Polyether,聚2-甲基-1,3-丙二醇,分子量为3000g/mol)、对苯二酸(TPA)按照摩尔比Polyether/TPA为2.1:1加入反应釜中,在惰性气体保护下,将体系升温至170℃反应5h,随后持续升温至230℃继续反应5h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇,羟值为7.33mgKOH/g,酸值为0.15mgKOH/g。
制备锂电池溶胀胶带用热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:甲苯二异氰酸酯,23份;
(2)苯基聚醚二元醇:72份;
(3)小分子扩链剂:1,6-己二醇,5份。
制备方法包括如下步骤:按照比例,
1)将苯基聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)在120℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
实施例4
苯基聚醚二元醇的制备:
将聚醚二元醇(Polyether,聚1,10-癸二醇,分子量为4000g/mol)、邻苯二甲酸(OPA)按照摩尔比Polyether/OPA为2.6:1加入反应釜中,在惰性气体保护下,将体系升温至200℃反应5h,随后持续升温至240℃继续反应4h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇,羟值为10.25mgKOH/g,酸值为0.59mgKOH/g。
制备锂电池溶胀胶带用热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:对苯二异氰酸酯,20份;
(2)苯基聚醚二元醇:74份;
(3)小分子扩链剂:1,4-丁二醇,6份。
制备方法包括如下步骤:按照比例,
1)将苯基聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)在130℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
实施例5
苯基聚醚二元醇的制备:
将聚醚二元醇(Polyether,聚1,3-丙二醇,分子量为1200g/mol)、间苯二甲酸(IPA)按照摩尔比Polyether/IPA为1.6:1加入反应釜中,在惰性气体保护下,将体系升温至180℃反应2h,随后持续升温至230℃继续反应4h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇,羟值为68.71mgKOH/g,酸值为0.08mgKOH/g。
制备锂电池溶胀胶带用热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:二苯基甲烷二异氰酸酯,51份;
(2)苯基聚醚二元醇:24份;
(3)小分子扩链剂:1,3-丙二醇,25份。
制备方法包括如下步骤:按照比例,
1)将苯基聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)在100℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
实施例6
苯基聚醚二元醇的制备:
将聚醚二元醇(Polyether,聚乙二醇,分子量为200g/mol)、对苯二甲酸(TPA)按照摩尔比Polyether/TPA为1.5:1加入反应釜中,在惰性气体保护下,将体系升温至160℃反应3h,随后持续升温至210℃继续反应4h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇,羟值为179.52mgKOH/g,酸值为0.01mgKOH/g。
制备锂电池溶胀胶带用热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:六亚甲基二异氰酸酯,26份;
(2)苯基聚醚二元醇:67份;
(3)小分子扩链剂:1,4-环己二醇,7份。
制备方法包括如下步骤:按照比例,
1)将苯基聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)在70℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
实施例7
苯基聚醚二元醇的制备:
将聚醚二元醇(Polyether,聚1,5-戊二醇,分子量为800g/mol)、邻苯二甲酸(OPA)按照摩尔比Polyether/OPA为2.3:1加入反应釜中,在惰性气体保护下,将体系升温至160℃反应2h,随后持续升温至240℃继续反应3h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇,羟值为45.84mgKOH/g,酸值为0.05mgKOH/g。
制备锂电池溶胀胶带用热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:异佛尔酮二异氰酸酯,48份;
(2)苯基聚醚二元醇:31份;
(3)小分子扩链剂:对苯二酚二羟乙基醚,21份。
制备方法包括如下步骤:按照比例,
1)将苯基聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)在80℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
实施例8
苯基聚醚二元醇的制备:
将聚醚二元醇(Polyether,聚1,6-己二醇,分子量为400g/mol)、苯酐(PA)按照摩尔比Polyether/PA为1.3:1加入反应釜中,在惰性气体保护下,将体系升温至160℃反应3h,随后持续升温至220℃继续反应4h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇,羟值为139.69mgKOH/g,酸值为0.46mgKOH/g。
制备锂电池溶胀胶带用热塑性聚氨酯的原料,按总重量为100份计,包括:
(1)二异氰酸酯:环己烷二亚甲基二异氰酸酯,58份;
(2)苯基聚醚二元醇:19份;
(3)小分子扩链剂:一缩二乙二醇,23份。
制备方法包括如下步骤:按照比例,
1)将苯基聚醚二元醇、小分子扩链剂混合均匀,得到混合物;
2)在90℃温度下,将二异氰酸酯加入步骤1)的混合物中,充分混合并完全反应得到所述热塑性聚氨酯。
将所述热塑性聚氨酯进行溶胀性测试和溶解性测试,测试结果如表1所示。
表1热塑性聚氨酯膜材料的溶胀性测试和溶解性测试
测试项目 | 溶胀率*(%) | 材料在电解液中的形态* |
实施例1 | 51.7 | ○ |
对比例1 | 37.3 | × |
对比例2 | 16.4 | △ |
实施例2 | 43.5 | ○ |
实施例3 | 47.5 | ○ |
实施例4 | 43.9 | ○ |
实施例5 | 50.3 | ○ |
实施例6 | 45.8 | ○ |
实施例7 | 48.1 | ○ |
实施例8 | 44.6 | ○ |
*:将所述热塑性聚氨酯制成厚度为40±5μm、边长为40mm的正方形非拉伸膜
从表1中可以看出,以苯酐聚醚二元醇为原料制备的热塑性聚氨酯相比于以苯酐聚酯二元醇或者聚醚二元醇为原料制备的热塑性聚氨酯,常温下具有更高的溶胀率,且长时间在高温电解液中形态保持完好,说明软段的苯基组分与聚醚组分形成协同效应,使所制备的热塑性聚氨酯具有良好的力学性能,其膜制品在锂电池电解液中具有良好的溶胀性能,且高温长周期不溶解、不脆裂、力学性能维持良好。所述热塑性聚氨酯作为基材制备成锂电池溶胀胶带,当胶带接触电解液发生溶胀,填充电芯和壳体之间的间隙,从而起到吸收震动能量、减少震动对电池的伤害、增加电池使用寿命的作用。
最后应当说明的是,以上实施例仅用以本发明的优选实施方式进行描述,而非对本发明保护范围的限制,尽管参照较佳实施例对本发明作了详细说明,本领域的普通技术人员应当理解,对本发明的技术方案进行修改或者等同替换作出的各种变型和改进,均应落入本发明的权利要求书确定的保护范围内。
Claims (10)
2.根据权利要求1所述的苯基聚醚二元醇,其特征在于,所述的聚醚二元醇选自聚乙二醇、聚1,3-丙二醇、聚1,4-丁二醇、聚1,5-戊二醇、聚1,6-己二醇、聚2-甲基-1,3-丙二醇、聚新戊二醇、聚1,10-癸二醇中的一种或多种。
3.根据权利要求1或2所述的苯基聚醚二元醇,其特征在于,所述的聚醚二元醇的数均分子量为200~4000g/mol,优选400-2000g/mol。
4.根据权利要求1-3任一项所述的苯基聚醚二元醇,其特征在于,所述苯基聚醚二元醇的羟值为5-180mgKOH/g,优选10-140mgKOH/g;酸值为0.01-0.6mgKOH/g,优选0.01-0.3mgKOH/g。
5.一种制备权利要求1-4任一项所述苯基聚醚二元醇的方法,包括以下步骤:将聚醚二元醇、苯基二酸或苯基酸酐在160-220℃反应3-5h,升温至210-260℃继续反应4-6h,随后开启真空系统,在真空条件下继续反应至羟值和酸值合格,降温出料得到苯基聚醚二元醇。
6.根据权利要求5所述的方法,其特征在于,所述苯基二酸为邻苯二甲酸、间苯二甲酸、对苯二甲酸中的一种或多种,所述苯基酸酐为苯酐。
7.根据权利要求5或6所述的方法,其特征在于,所述聚醚二元醇与苯基二酸或苯基酸酐的摩尔比为1~2.6:1。
8.根据权利要求4所述的方法,其特征在于,所述聚醚二元醇与苯基二酸或苯基酸酐的摩尔比为1~2.6:1。
9.一种热塑性聚氨酯,制备原料包含以下组分,按总重量为100份计:
(1)二异氰酸酯:20-58份,优选24-48份;
(2)权利要求1-4任一项所述苯基聚醚二元醇:19~74份,优选31~68份;
(3)小分子扩链剂:5-25份,优选8-21份。
10.一种锂电池溶胀胶带,包括权利要求9所述的热塑性聚氨酯。
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