CN113906074B - 具有高剖层撕裂的低密度聚氨酯泡沫系 - Google Patents
具有高剖层撕裂的低密度聚氨酯泡沫系 Download PDFInfo
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- CN113906074B CN113906074B CN202080037820.1A CN202080037820A CN113906074B CN 113906074 B CN113906074 B CN 113906074B CN 202080037820 A CN202080037820 A CN 202080037820A CN 113906074 B CN113906074 B CN 113906074B
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- Prior art keywords
- polyurethane foam
- polyol formulation
- polyurethane
- foam
- total weight
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- 229920005830 Polyurethane Foam Polymers 0.000 title claims abstract description 81
- 239000011496 polyurethane foam Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims description 103
- 229920005862 polyol Polymers 0.000 claims description 79
- 150000003077 polyols Chemical class 0.000 claims description 79
- 238000009472 formulation Methods 0.000 claims description 70
- 239000012948 isocyanate Substances 0.000 claims description 48
- 150000002513 isocyanates Chemical class 0.000 claims description 48
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 32
- 239000003054 catalyst Substances 0.000 claims description 26
- 229920000103 Expandable microsphere Polymers 0.000 claims description 25
- 239000006260 foam Substances 0.000 claims description 23
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 20
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- 239000004094 surface-active agent Substances 0.000 claims description 10
- 239000003431 cross linking reagent Substances 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims 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 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
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- 239000004615 ingredient Substances 0.000 claims description 3
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- 238000003780 insertion Methods 0.000 abstract description 2
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 27
- 239000004604 Blowing Agent Substances 0.000 description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
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- 239000004814 polyurethane Substances 0.000 description 6
- 239000004970 Chain extender Substances 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 5
- -1 amine compound Chemical class 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 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 229920002635 polyurethane Polymers 0.000 description 5
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
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- 125000003827 glycol group Chemical group 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 239000004971 Cross linker Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 3
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- 229910052797 bismuth Inorganic materials 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 150000001718 carbodiimides Chemical class 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
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- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- ZYWUVGFIXPNBDL-UHFFFAOYSA-N n,n-diisopropylaminoethanol Chemical compound CC(C)N(C(C)C)CCO ZYWUVGFIXPNBDL-UHFFFAOYSA-N 0.000 description 2
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- 125000002524 organometallic group Chemical group 0.000 description 2
- UKODFQOELJFMII-UHFFFAOYSA-N pentamethyldiethylenetriamine Chemical compound CN(C)CCN(C)CCN(C)C UKODFQOELJFMII-UHFFFAOYSA-N 0.000 description 2
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- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 150000004992 toluidines Chemical class 0.000 description 2
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 1
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- ZBBLRPRYYSJUCZ-GRHBHMESSA-L (z)-but-2-enedioate;dibutyltin(2+) Chemical compound [O-]C(=O)\C=C/C([O-])=O.CCCC[Sn+2]CCCC ZBBLRPRYYSJUCZ-GRHBHMESSA-L 0.000 description 1
- FTTATHOUSOIFOQ-UHFFFAOYSA-N 1,2,3,4,6,7,8,8a-octahydropyrrolo[1,2-a]pyrazine Chemical compound C1NCCN2CCCC21 FTTATHOUSOIFOQ-UHFFFAOYSA-N 0.000 description 1
- ZFDWWDZLRKHULH-UHFFFAOYSA-N 1,2-dimethyl-5,6-dihydro-4h-pyrimidine Chemical compound CN1CCCN=C1C ZFDWWDZLRKHULH-UHFFFAOYSA-N 0.000 description 1
- GIWQSPITLQVMSG-UHFFFAOYSA-N 1,2-dimethylimidazole Chemical compound CC1=NC=CN1C GIWQSPITLQVMSG-UHFFFAOYSA-N 0.000 description 1
- FCQPNTOQFPJCMF-UHFFFAOYSA-N 1,3-bis[3-(dimethylamino)propyl]urea Chemical compound CN(C)CCCNC(=O)NCCCN(C)C FCQPNTOQFPJCMF-UHFFFAOYSA-N 0.000 description 1
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 1
- 229940035437 1,3-propanediol Drugs 0.000 description 1
- RXYPXQSKLGGKOL-UHFFFAOYSA-N 1,4-dimethylpiperazine Chemical compound CN1CCN(C)CC1 RXYPXQSKLGGKOL-UHFFFAOYSA-N 0.000 description 1
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 description 1
- GEEGPFGTMRWCID-UHFFFAOYSA-N 1-n,1-n,1-n',1-n'-tetramethylbutane-1,1-diamine Chemical compound CCCC(N(C)C)N(C)C GEEGPFGTMRWCID-UHFFFAOYSA-N 0.000 description 1
- AXFVIWBTKYFOCY-UHFFFAOYSA-N 1-n,1-n,3-n,3-n-tetramethylbutane-1,3-diamine Chemical compound CN(C)C(C)CCN(C)C AXFVIWBTKYFOCY-UHFFFAOYSA-N 0.000 description 1
- CVFRFSNPBJUQMG-UHFFFAOYSA-N 2,3-bis(2-hydroxyethyl)benzene-1,4-diol Chemical compound OCCC1=C(O)C=CC(O)=C1CCO CVFRFSNPBJUQMG-UHFFFAOYSA-N 0.000 description 1
- PISLZQACAJMAIO-UHFFFAOYSA-N 2,4-diethyl-6-methylbenzene-1,3-diamine Chemical compound CCC1=CC(C)=C(N)C(CC)=C1N PISLZQACAJMAIO-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
- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 description 1
- SAIXZIVDXDTYCH-UHFFFAOYSA-N 3-chlorobenzene-1,2-diamine Chemical compound NC1=CC=CC(Cl)=C1N SAIXZIVDXDTYCH-UHFFFAOYSA-N 0.000 description 1
- BRKHZWFIIVVNTA-UHFFFAOYSA-N 4-cyclohexylmorpholine Chemical compound C1CCCCC1N1CCOCC1 BRKHZWFIIVVNTA-UHFFFAOYSA-N 0.000 description 1
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 1
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
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- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 1
- SVYKKECYCPFKGB-UHFFFAOYSA-N N,N-dimethylcyclohexylamine Chemical compound CN(C)C1CCCCC1 SVYKKECYCPFKGB-UHFFFAOYSA-N 0.000 description 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 1
- AKNUHUCEWALCOI-UHFFFAOYSA-N N-ethyldiethanolamine Chemical compound OCCN(CC)CCO AKNUHUCEWALCOI-UHFFFAOYSA-N 0.000 description 1
- 239000004435 Oxo alcohol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- ISKQADXMHQSTHK-UHFFFAOYSA-N [4-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=C(CN)C=C1 ISKQADXMHQSTHK-UHFFFAOYSA-N 0.000 description 1
- CQQXCSFSYHAZOO-UHFFFAOYSA-L [acetyloxy(dioctyl)stannyl] acetate Chemical compound CCCCCCCC[Sn](OC(C)=O)(OC(C)=O)CCCCCCCC CQQXCSFSYHAZOO-UHFFFAOYSA-L 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
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- 125000001931 aliphatic group Chemical group 0.000 description 1
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- NUMHJBONQMZPBW-UHFFFAOYSA-K bis(2-ethylhexanoyloxy)bismuthanyl 2-ethylhexanoate Chemical compound [Bi+3].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O NUMHJBONQMZPBW-UHFFFAOYSA-K 0.000 description 1
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- FNYKAWJEEWSNEH-UHFFFAOYSA-K bismuth;3,3,5,5-tetramethylhexanoate Chemical compound [Bi+3].CC(C)(C)CC(C)(C)CC([O-])=O.CC(C)(C)CC(C)(C)CC([O-])=O.CC(C)(C)CC(C)(C)CC([O-])=O FNYKAWJEEWSNEH-UHFFFAOYSA-K 0.000 description 1
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- LVTYICIALWPMFW-UHFFFAOYSA-N diisopropanolamine Chemical compound CC(O)CNCC(C)O LVTYICIALWPMFW-UHFFFAOYSA-N 0.000 description 1
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- 239000012971 dimethylpiperazine Substances 0.000 description 1
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- 238000009826 distribution Methods 0.000 description 1
- PYBNTRWJKQJDRE-UHFFFAOYSA-L dodecanoate;tin(2+) Chemical compound [Sn+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O PYBNTRWJKQJDRE-UHFFFAOYSA-L 0.000 description 1
- PLONEVHFXDFSLA-UHFFFAOYSA-N ethyl hexanoate;tin(2+) Chemical compound [Sn+2].CCCCCC(=O)OCC PLONEVHFXDFSLA-UHFFFAOYSA-N 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
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- 150000008282 halocarbons Chemical class 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 description 1
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- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
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- 235000016709 nutrition Nutrition 0.000 description 1
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- 150000002902 organometallic compounds Chemical class 0.000 description 1
- WCVRQHFDJLLWFE-UHFFFAOYSA-N pentane-1,2-diol Chemical compound CCCC(O)CO WCVRQHFDJLLWFE-UHFFFAOYSA-N 0.000 description 1
- RUOPINZRYMFPBF-UHFFFAOYSA-N pentane-1,3-diol Chemical compound CCC(O)CCO RUOPINZRYMFPBF-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
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- IUTCEZPPWBHGIX-UHFFFAOYSA-N tin(2+) Chemical class [Sn+2] IUTCEZPPWBHGIX-UHFFFAOYSA-N 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
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- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
Classifications
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- 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
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- 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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- 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
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Abstract
在“一步法”中制备的聚氨酯泡沫具有低密度,是半硬质的,显示出高回弹值,同时提供优异的剖开撕裂性能。本公开内容的聚氨酯泡沫可用于“一步法”中以制备鞋底、鞋的中底或内底。鞋底可用于形成凉鞋类鞋的外底、运动类鞋的中底或用于插入任何类型的鞋中的内底。
Description
发明领域
本发明涉及一种可用于鞋类应用的具有高劈裂的低密度聚氨酯泡沫。
背景
聚氨酯(PU)是由通过氨基甲酸酯键连接的有机单元组成的聚合物。聚氨酯聚合物通常通过具有至少两个异氰酸酯基的异氰酸酯与具有至少两个羟基的多元醇的反应而制备。聚氨酯用于制造高弹性泡沫座椅、鞋类、硬质泡沫绝缘板、微孔泡沫密封和垫圈、耐用弹性体车轮和轮胎、汽车悬架衬套、电灌注复合物、高性能胶粘剂、表面涂料和表面密封剂、合成纤维、地毯底衬、硬塑料零件、软管等。
当聚氨酯以泡沫形式用于诸如鞋类的鞋底的应用中时,它们可以提供具有高耐磨性的轻质。这种PU泡沫的应用包括宽范围的鞋类型,例如运动和徒步鞋和靴子以及用于商务和时尚鞋底的鞋,以及高质量的安全鞋。为了获得轻质鞋底,PU泡沫必须具有低密度(例如不大于400克/升)。除了轻质以外,PU泡沫还必须具有足够的硬度(例如肖氏A硬度大于40)、高回弹性(高于50%)、低压缩变定(低于20%)和良好的剖层撕裂(split tear,例如剖层撕裂高于1.8N/mm)。剖层撕裂是用于鞋类应用的微孔聚氨酯泡沫的突出的机械性能。
CN101486801B公开了一种添加有热发泡性微球的低密度微孔聚氨酯弹性体及其制备方法。通过加入热发泡性微球,该发明制备了用于鞋底材料的低密度(0.28-0.32g/cm)微孔聚氨酯弹性体;所得材料具有优异的附加力学性能。
WO2018/160945A1公开了一种具有改善的机械性能如球回弹性的聚氨酯弹性体泡沫,其使用分子量为1900-2100且羟基值为53-60的聚四亚甲基醚二醇(聚四氢呋喃)与单乙二醇的组合的反应产物和作为异氰酸酯预聚物的4,4'-二苯甲烷二异氰酸酯(4,4'-MDI)制备。
然而,这些申请均未描述如何制备具有高剖层撕裂性能的低密度聚氨酯泡沫系,其可用作鞋类如运动鞋、徒步鞋和靴子的鞋底以及与商务和时尚鞋底,以及高质量的安全鞋的鞋底。
发明概述
本公开内容的实施方案提供了以“一步法”制备的聚氨酯泡沫,其具有低密度(不大于400g/L),是半硬质的(Asker C硬度为25-70),显示出高回弹值(55-65%的垂直回弹率),同时提供优异的剖层撕裂性能。令人惊讶地发现,使用水和可膨胀微球作为发泡剂,并使用聚四亚甲基醚二醇(PTMEG)作为唯一的多元醇,提供了具有上述性能的聚氨酯泡沫。本公开内容的聚氨酯泡沫与现有技术的聚氨酯泡沫的显著不同之处在于,如上所述,在该聚氨酯泡沫中使用的发泡剂是水和可膨胀微球的组合。
本公开内容的聚氨酯泡沫具有根据DIN EN ISO 845测得为150-400g/L的密度,并且通过使包含80-50重量%(wt.%)的多元醇配制剂和20-50wt.%的异氰酸酯预聚物的混合物反应而形成,其中wt.%基于混合物的总重量。所述多元醇配制剂包含90-98wt.%具有1800-2100重均分子量(MWw)的聚四亚甲基醚二醇(PTMEG);0.1-6wt.%可膨胀微球和0.5-3wt.%水的发泡剂组合;其中多元醇配制剂的wt.%值基于多元醇配制剂的总重量。
多元醇配制剂进一步包含催化剂、表面活性剂、交联剂和其他任选的添加剂作为多元醇中的成分,其中催化剂、表面活性剂、交联剂和其他任选的添加剂一起使多元醇配制剂的wt.%达到100wt.%。
异氰酸酯预聚物包含40-70wt.%具有至少92wt.%4,4'-二苯甲烷二异氰酸酯的异氰酸酯组分;和30-60wt.%PTMEG,基于异氰酸酯预聚物的总重量,其中异氰酸酯预聚物的NCO值为15-22。本文所述的混合物在多元醇配制剂或异氰酸酯预聚物中均不包含其他多元醇。换言之,在形成本公开内容的聚氨酯泡沫的混合物中仅存在一种多元醇PTMEG。
对于实施方案,多元醇配制剂包含0.8-2wt.%的水。在其他实施方案中,多元醇配制剂包含1.4-2wt.%的水。
对于实施方案,多元醇配制剂包含0.5-5wt.%的可膨胀微球。在其他实施方案中,多元醇配制剂包含1-5wt.%的可膨胀微球。
如上所述,聚氨酯泡沫具有根据ASTM D2240测得为25-70的Asker C硬度。此外,本公开内容的聚氨酯泡沫可优选具有根据ASTM D2240测得为30-55,更优选35-55的Asker C硬度。
如上所述,聚氨酯泡沫具有根据ASTM D2632测得为55%-65%的垂直回弹率。
本公开内容还提供了一种形成聚氨酯泡沫的方法。所述方法包括通过在室温(23℃)下混合并在70℃下将PTMEG熔融过夜,然后保持在40-50℃下以更好地处理和与其他组分一起计量加料来制备多元醇配制剂;在聚氨酯泡沫机的搅拌反应釜中将多元醇配制剂加热至40-45℃的温度,并且在聚氨酯泡沫机的异氰酸酯釜中将异氰酸酯预聚物加热至30-45℃的温度;在大气压下将异氰酸酯预聚物与多元醇配制剂混合,并使用聚氨酯泡沫机将混合物倒入具有所需形状的加热模具中,其中所述混合物具有50-80wt.%的多元醇配制剂和20-50wt.%的异氰酸酯预聚物;闭合模具,使反应物填充模具,反应5-15分钟的给定脱模时间,从而形成聚氨酯泡沫。
本公开内容的聚氨酯泡沫可用于“一步法”以制备鞋底、鞋的中底或内底。鞋底可用于形成凉鞋类鞋的外底、运动类鞋的中底或用于插入任何类型的鞋中的内底。
详细描述
本公开内容的实施方案提供了以“一步法”制备的聚氨酯泡沫,其具有低密度(不大于400g/L),是半硬质的(25-70的Asker C硬度),显示出高回弹值(55-65%的垂直回弹率),同时提供优异的剖层撕裂性能。令人惊讶地发现,使用水和可膨胀微球作为发泡剂,并且使用聚四亚甲基醚二醇(PTMEG)作为唯一的多元醇,提供了显示出上述性能的聚氨酯泡沫。本公开内容的聚氨酯泡沫与现有技术的聚氨酯泡沫的显著不同之处在于,如上所述,该聚氨酯泡沫中使用的发泡剂为水和可膨胀微球的组合。
本公开内容的聚氨酯泡沫对于制备用于休闲应用如运动或技术鞋的舒适的单密度鞋底、中底和/或内底是理想的。此外,本公开内容的聚氨酯泡沫在回弹和剖层撕裂方面优于其他PU泡沫。此外,用于形成聚氨酯泡沫的唯一多元醇是PTMEG,所用的发泡剂是水和可膨胀微球的组合。在本公开内容的“一步”法中,水与可膨胀微球的发泡剂组合与单独的多元醇(PTMEG)一起使用令人惊讶地得到具有低密度、高弹性和优异剖层撕裂的半硬质PU泡沫。此外,本公开内容的聚氨酯泡沫具有良好的加工性,固化良好,具有良好的表面质量并且在脱模时显示出最小的收缩,然而其密度低。
本公开内容的多元醇配制剂包含0-5wt.%的至少一种额外的二醇扩链剂,其中wt.%基于多元醇配制剂的总重量。在其他实施方案中,多元醇配制剂包含0.5-5wt.%的额外的二醇扩链剂。优选地,在本公开内容中,用于形成聚氨酯泡沫的混合物不包含额外的二醇扩链剂。用于聚氨酯的额外扩链剂通常是具有两个羟基或胺官能团的低分子量醇或胺化合物。常用的二醇扩链剂的实例是但不限于1,2-丙二醇、1,3-丙二醇、1,4-丁二醇(BDO)、1,2-戊二醇、1,3-戊二醇、1,10-癸二醇、1,2-二羟基环己烷、1,3-二羟基环己烷、1,4-二羟基环己烷、单乙二醇(MEG)、二甘醇和三甘醇、二丙二醇和三丙二醇、1,6-己二醇和双(2-羟乙基)氢醌。
本公开内容的聚氨酯泡沫具有根据DIN EN ISO 845测得为150-400克/升(g/1)的密度。优选地,本公开内容的聚氨酯弹性体泡沫具有根据DIN EN ISO 845测得为250-350g/1的密度。聚氨酯泡沫的该密度意指整个聚氨酯泡沫的平均密度。本公开内容的聚氨酯泡沫还具有通过ASTM D2240测得为25-70的Asker C硬度。优选地,本公开内容的聚氨酯泡沫具有根据ASTM D2240测得为30-55的Asker C硬度。更优选地,本公开内容的聚氨酯泡沫具有根据ASTM D2240测得为35-55的Asker C硬度。本公开内容的聚氨酯泡沫还具有根据ASTMD2632测得为55-65%的垂直回弹率。此外,本公开内容的聚氨酯泡沫优选地以根据ASTM D395测得为不大于20%的压缩变定为目标。聚氨酯弹性体泡沫的其他性能包括根据ASTMD624测得为7-10N/mm的撕裂强度;根据DIN 53504测得为1.5-3N/mm2的拉伸强度;根据DIN53504测得为350-450%的断裂伸长率;本公开内容的聚氨酯泡沫还具有1.2-5N/mm的剖层撕裂,其中测量剖层撕裂的方法描述于下文实施例部分中。
本文所述的聚氨酯泡沫通过使包含80-50重量%(wt.%)的多元醇配制剂和20-50wt.%的异氰酸酯预聚物的混合物反应而形成,其中wt.%基于混合物的总重量。优选地,混合物包含70-55wt.%的多元醇配制剂和30-45wt.%的异氰酸酯预聚物,其中wt.%基于混合物的总重量。更优选地,混合物包含59-57wt.%的多元醇配制剂和41-43wt.%的异氰酸酯预聚物,其中wt.%基于混合物的总重量。形成混合物的多元醇配制剂和异氰酸酯预聚物的wt.%可合计达100wt.%,其中wt.%基于混合物的总重量。
多元醇配制剂包含90-98wt.%的单二醇聚四亚甲基醚二醇(PTMEG),所述聚四亚甲基醚二醇具有1800-2100的重均分子量(MWw),其中wt.%基于多元醇配制剂的总重量。优选由90-96wt.%的本文所述PTMEG组成的多元醇配制剂。更优选由93-96wt.%的PTMEG组成的多元醇配制剂。在一个实施方案中,多元醇配制剂优选由94.8wt.%的本文所述的PTMEG组成。在另一优选实施方案中,多元醇配制剂优选由94.3wt.%的本文所述的PTMEG组成。
PTMEG的实例包括由INVISTA商购获得的PTMEG2000。PTMEG 2000具有1900-2100的重均分子量和53.4-59.1的羟基值(mgKOH/gm)。适于本公开内容的PTMEG的一个实例包括由BASF商购获得的PolyTHF 2000,其具有1950-2050的重均分子量和54.7-57.5的羟基值(mg KOH/gm)。具有1800-2100的MWw和约53-约60的羟基值的其他PTMEG可商购获得,并且适于本公开内容。
多元醇配制剂进一步包含水和可膨胀微球的发泡剂组合。对于各种实施方案,水以0.5-3wt.%存在于多元醇配制剂中,且可膨胀微球以0.1-6wt.%存在于多元醇配制剂中,其中wt%基于多元醇配制剂的总重量。优选地,水以0.8-2wt.%存在于多元醇配制剂中。更优选地,1.4-2wt.%的水存在于多元醇配制剂中。可膨胀微球优选以0.5-5wt.%,更优选1-5wt.%存在于多元醇配制剂中,其中wt%基于多元醇配制剂的总重量。
可膨胀微球是包含包封烃类气体的热塑性聚合物壳(例如聚丙烯腈或其共聚物)的中空微珠。当加热时,包封烃类气体的热塑性壳软化。在软化热塑性壳的同时,气体膨胀并在壳上施加增加的压力,从而导致微球的体积增加。材料在反应处理期间所暴露的温度导致塑料壳软化,同时导致所封闭的气体膨胀。结果是微球膨胀。微球的膨胀性可通过测定其TMA密度[kg/m3](Mettler Toledo Stare热分析系统;加热速率20℃/分钟)来描述。此处,TMA密度是在微球塌陷之前在大气压下在一定温度T最大下可获得的最小密度。任何可热膨胀的微球都可用于本发明。然而,优选含有烃,特别是脂族或脂环族烃的微球。本文所用的术语“烃”旨在包括非卤化和部分或完全卤化的烃。适用于本公开内容的可膨胀微球的实例包括但不限于可由AkzoNobel公司商购获得的可膨胀微球EXPANCEL WU、EXPANCEL DU、EXPANCEL SL和EXPANCEL MB系列,以及可由Sekisui Chemical公司商购获得的可膨胀微球ADVANCELL EM。其他可商购获得的或本领域技术人员已知的可膨胀微球也适用于本发明。
多元醇配制剂进一步包含催化剂、表面活性剂、交联剂和其他任选的添加剂作为多元醇配制剂中的成分。对于各种实施方案,催化剂、表面活性剂、交联剂和其他任选的添加剂一起使多元醇配制剂的wt.%达到100wt.%。
作为催化剂,可使用所有加速异氰酸酯基和羟基之间反应的化合物。该类化合物是已知的,并且描述于例如“Kunststoffhandbuch,第7卷,Polyurethane”,Carl HanserVerlag,第3版,1993,第3.4.1章中。这些化合物包括胺基催化剂、基于有机金属化合物的催化剂和四烷基锡烷氧基类催化剂。胺基催化剂的实例包括三亚乙基二胺(TEDA)基催化剂、三乙醇胺(TEA)基催化剂、二异丙基乙醇胺(DIEA)基催化剂、五甲基二亚乙基三胺基催化剂、四甲基丁二胺基催化剂、二甲基环己胺基催化剂、双(二甲基氨基丙基)甲胺基催化剂、双(2-二甲基氨基乙基)醚和1,8-二氮杂双环[5.4.0]十一碳-7-烯(DBU)基催化剂。合适催化剂的其他实例包括2,3-二甲基-3,4,5,6-四氢嘧啶,叔胺如三乙胺、三丁胺、二甲基苄胺、N-甲基吗啉、N-乙基吗啉、N-环己基吗啉、N,N,N',N'-四甲基乙二胺、N,N,N',N'-四甲基丁二胺、N,N,N',N'-四甲基己二胺、五甲基二亚乙基三胺、四甲基二氨基乙醚、双-(二甲基氨基丙基)-脲、N,N-二甲基苄胺、二甲基哌嗪、1,2-二甲基咪唑、1-甲基咪唑、1-氮杂双环(3,3,0)辛烷和优选的1,4-二氮杂双环(2,2,2)辛烷,以及链烷醇胺化合物如三乙醇胺、三异丙醇胺、N-甲基二乙醇胺和N-乙基二乙醇胺和二甲基乙醇胺。有机金属催化剂化合物的实例包括锌盐如辛酸锌,有机锡化合物如有机羧酸的锡(II)盐、乙酸锡(II)、辛酸锡(II)、乙基己酸锡(II)和月桂酸锡(II),和有机羧酸的二烷基锡(IV)盐、二乙酸二丁基锡、二月桂酸二丁基锡、马来酸二丁基锡和二乙酸二辛基锡,以及铋如新癸酸铋(III)、2-乙基己酸铋和辛酸铋或其混合物。胺基催化剂可单独使用或与有机金属催化剂化合物组合使用。催化剂可占多元醇配制剂总重量的0.01-2wt.%。可商购获得的催化剂的实例包括EG(EVONIK Nutrition&Care GmbH)、/>33LM(Air Products/Evonik)、MAXTM A-l催化剂(Momentive Performance Materials Inc.)、FOMREZTM UL 22(MomentivePerformance Materials Inc.)、/>BDMA(Air Products)和/>XD 102(Air Products/Evonik)。
适于本公开内容的表面活性剂包括含硅氧烷的表面活性剂,例如硅氧烷-氧化烯共聚物和其他有机聚硅氧烷。也可以使用脂肪醇、羰基合成醇、脂肪胺、烷基酚、二烷基酚、烷基甲酚、烷基间苯二酚、萘酚、烷基萘酚、萘胺、苯胺、烷基苯胺、甲苯胺、双酚A、烷基化双酚A、聚乙烯醇的烷氧基化产物,以及甲醛和烷基酚、甲醛和二烷基酚、甲醛和烷基甲酚、甲醛和烷基间苯二酚、甲醛和苯胺、甲醛和甲苯胺、甲醛和萘酚、甲醛和烷基萘酚以及甲醛和双酚A的缩合产物的进一步烷氧基化产物,或者这些泡沫稳定剂中两种或更多种的混合物。该类表面活性剂的实例包括DC 193(Air Products)、TEGOSTABTM B 2114(EVONIK Nutrition&Care GmbH)和/>DC 3043(Air Products)。表面活性剂可占多元醇配制剂总重量的0.05-3wt.%。
用于本公开内容的交联剂包括但不限于含有至少两个选自羟基、伯氨基、仲氨基和其他可与异氰酸酯基反应的含活性氢的基团的结构部分的低分子量化合物。交联剂包括例如多元醇(尤其是三元醇,例如甘油和三羟甲基丙烷)、多胺及其组合。多胺交联剂的非限制性实例包括二乙基甲苯二胺、氯代二氨基苯、二乙醇胺、二异丙醇胺、三乙醇胺、三丙醇胺、1,6-己二胺及其组合。典型的二胺交联剂包含12个或更少的碳原子,更通常包含7个或更少的碳原子。该类交联剂的实例包括Diethanolamine pure(BASF)或Glycerine(DOW)。交联剂可占多元醇配制剂总重量的0.05-3wt.%。
异氰酸酯预聚物包含基于异氰酸酯预聚物总重量为40-70wt.%的具有至少92wt.%4,4'-二苯甲烷二异氰酸酯的异氰酸酯混合物和30-60wt.%的PTMEG,其中异氰酸酯预聚物的NCO值为15-22。优选地,异氰酸酯预聚物的NCO值为18-20。优选地,异氰酸酯预聚物包含60-65wt.%的异氰酸酯混合物和35-40wt.%的PTMEG。优选地,异氰酸酯混合物可包含93-100wt.%的4,4'-二苯甲烷二异氰酸酯和7-0wt.%的2,4'-MDI、脲酮亚胺或碳二亚胺改性的4,4'-MDI。更优选地,异氰酸酯混合物可包含96-98wt.%的4,4'-二苯甲烷二异氰酸酯和4-2wt.%的碳二亚胺改性的4,4'-MDI。该异氰酸酯预聚物的实例包括异氰酸酯预聚物ISO 136/26(BASF)。
本发明的形成聚氨酯的组合物可进一步包含一种或多种其他添加剂,例如颜料,增强材料如玻璃纤维,抗水解剂,抗静电剂,阻燃剂,抗氧化剂和抗磨剂等。当存在时,每种其他添加剂可以加入到多元醇配制剂中或异氰酸酯预聚物中。
本公开内容还提供了一种形成聚氨酯泡沫的方法。所述方法包括通过在室温(23℃)下混合并在70℃下将PTMEG熔融过夜,然后保持在40-50℃下以更好地处理和与其他组分一起计量加料来制备多元醇配制剂;将多元醇配制剂加热至40-45℃的温度;在聚氨酯泡沫机的异氰酸酯釜中将异氰酸酯预聚物加热至30-45℃的温度,并在大气压下将异氰酸酯预聚物与多元醇配制剂混合,并使用聚氨酯泡沫机将混合物倒入具有所需形状的加热模具中;闭合模具,使反应物填充模具并反应给定的脱模时间以形成聚氨酯泡沫。在该方法中,本发明的聚氨酯形成组合物具有50-80wt.%的多元醇配制剂和20-50wt.%的异氰酸酯预聚物,其中wt.%基于聚氨酯形成组合物的总重量。
本公开内容的聚氨酯泡沫优选通过使用低压或高压技术在密闭模具,有利地在加热模具中以一步法制备。如已知的那样,本公开内容的聚氨酯弹性体泡沫也可在敞口模具中使用倾注或浇铸机生产。模具通常为金属(例如铝或钢)并设定至50-60℃的温度。脱模时间为5-15分钟。任选地,所述泡沫可以已经包含鞋底的其他部分,例如外底或中底的部分。
附图简介
图1显示了在制备后用于测试的剖层撕裂测试样品,其显示了劈裂和痕迹的位置。
实施例
提供以下实施例来阐明各种实施方案,但并非旨在限制权利要求的范围。除非另有说明,所有的组分都是从商业销售商购买的,并且按收到的形式使用。除非另有说明,所有百分比均为基于用于形成聚氨酯弹性体泡沫的混合物的总重量的重量百分比(wt.%)。
用于制备以下实施例的聚氨酯弹性体泡沫的组分列于表1中。
表1—组分和商业来源
根据表2中下列标准中所列的程序测定机械性能。
表2—机械性能的测试标准
剖层撕裂测试方法:
剖层撕裂测试基于SATRA TM65(1992),保持根据第5条的相同的试样制备,然而将样品尺寸修改为10±1mm的厚度并从片材上切割3个矩形25±1mm×160±5mm。
程序如下;
1将每个测试件的一端在顶面和底面之间的中间剖分开16±4mm的距离。然后在试样上制造4个连续的30mm部分,如图1所示。切割工具和方法根据第6.1和6.2条。
2以100±10mm/分钟的钳口分离速率操作机器,直到剖口每扩展四个30mm,这由图1中的标记指示或到达表面。如果剖口不是沿着测试样品的中心传播,而是在到达120mm(4×30mm)标记之前到达表面,则不对该值进行计数。
3对另外两个样品重复上述2中的程序。
数据采集和分析:
1记录每个样品的4个部分中的每一个的最低值。计算每个样品的4个最低值的平均值并以N/mm为单位记录结果。
2报告每个样品的平均值。
下表3列出了对比例1,其包含各种多元醇配制剂,但对比例1中不包含可膨胀微球。
为了形成实施例1-6的聚氨酯弹性体泡沫,在搅拌反应釜中将以其给定重量百分比(wt.%)配制的多元醇配制剂加热至40-45℃的温度,并在低压机器(Zhejiang HaifengShoemaking Equipment Co.,Ltd.)的异氰酸酯釜中将给定重量百分比(wt%)的异氰酸酯预聚物加热至30-35℃的温度。将铝模具(测试板模具200×200×10mm)加热至55℃的温度。在大气压下将表3中给定份数的异氰酸酯预聚物与100重量份的多元醇配制剂混合,并使用低压机器将混合物倒入加热的铝模具中。闭合模具,使反应物填充模具并反应表3中给定的脱模时间。
打开模具并使聚氨酯弹性体泡沫脱模。使所述聚氨酯弹性体泡沫在25℃和50%相对湿度下固化24小时,然后测试所述聚氨酯弹性体泡沫的物理性能。
表3—实施例1-6的聚氨酯泡沫与不含可膨胀微球的聚氨酯泡沫的对比例1的机械性能对比
表3中的实施例1和对比例1的性能表明,没有可膨胀微球对聚氨酯泡沫的剖开撕裂具有负面影响。
Claims (22)
1.一种聚氨酯泡沫,其具有根据DIN EN ISO 845测得为150-400g/L的密度,其中所述聚氨酯泡沫通过使由以下物质组成的混合物反应而形成:
80-50重量%(wt.%)的多元醇配制剂和20-50wt.%的异氰酸酯预聚物,其中wt.%基于混合物的总重量;
其中多元醇配制剂包含90-98wt.%的重均分子量(MWw)为1800-2100的聚四亚甲基醚二醇(PTMEG)、0.1-6wt.%的可膨胀微球和0.5-3wt.%的水,其中多元醇配制剂的wt.%值基于多元醇配制剂的总重量。
2.根据权利要求1所述的聚氨酯泡沫,其进一步包含催化剂、表面活性剂、交联剂和其他任选的添加剂作为所述多元醇配制剂中的成分,其中所述催化剂、表面活性剂、交联剂和其他任选的添加剂一起使多元醇配制剂的wt.%达到100wt.%。
3.根据权利要求1所述的聚氨酯泡沫,其中异氰酸酯预聚物包含:
40-70wt.%的具有至少92wt.%4,4'-二苯甲烷二异氰酸酯的异氰酸酯组分;和30-60wt.%的PTMEG,基于异氰酸酯预聚物的总重量,其中异氰酸酯预聚物的NCO值为15-22。
4.根据权利要求2所述的聚氨酯泡沫,其中异氰酸酯预聚物包含:
40-70wt.%的具有至少92wt.%4,4'-二苯甲烷二异氰酸酯的异氰酸酯组分;和30-60wt.%的PTMEG,基于异氰酸酯预聚物的总重量,其中异氰酸酯预聚物的NCO值为15-22。
5.根据权利要求1-4中任一项所述的聚氨酯泡沫,其中多元醇配制剂具有0.8-2wt.%的水含量,基于多元醇配制剂的总重量。
6.根据权利要求5所述的聚氨酯泡沫,其中多元醇配制剂具有1.4-2wt.%的水含量,基于多元醇配制剂的总重量。
7.根据权利要求1-4中任一项所述的聚氨酯泡沫,其中多元醇配制剂具有0.5-5wt.%的可膨胀微球含量,基于多元醇配制剂的总重量。
8.根据权利要求5所述的聚氨酯泡沫,其中多元醇配制剂具有0.5-5wt.%的可膨胀微球含量,基于多元醇配制剂的总重量。
9.根据权利要求7所述的聚氨酯泡沫,其中多元醇配制剂具有1-5wt.%的可膨胀微球含量,基于多元醇配制剂的总重量。
10.根据权利要求1-4中任一项所述的聚氨酯泡沫,其中聚氨酯弹性体泡沫具有根据ASTM D2632测得为55-65%的垂直回弹率。
11.根据权利要求5所述的聚氨酯泡沫,其中聚氨酯弹性体泡沫具有根据ASTM D2632测得为55-65%的垂直回弹率。
12.根据权利要求7所述的聚氨酯泡沫,其中聚氨酯弹性体泡沫具有根据ASTM D2632测得为55-65%的垂直回弹率。
13.根据权利要求1-4中任一项所述的聚氨酯泡沫,其中聚氨酯弹性体泡沫具有根据ASTM D2240测得为25-70的Asker C硬度。
14.根据权利要求5所述的聚氨酯泡沫,其中聚氨酯弹性体泡沫具有根据ASTM D2240测得为25-70的Asker C硬度。
15.根据权利要求7所述的聚氨酯泡沫,其中聚氨酯弹性体泡沫具有根据ASTM D2240测得为25-70的Asker C硬度。
16.根据权利要求10所述的聚氨酯泡沫,其中聚氨酯弹性体泡沫具有根据ASTM D2240测得为25-70的Asker C硬度。
17.根据权利要求13所述的聚氨酯泡沫,其中聚氨酯弹性体泡沫具有根据ASTM D2240测得为30-55的Asker C硬度。
18.根据权利要求17所述的聚氨酯泡沫,其中聚氨酯弹性体泡沫具有根据ASTM D2240测得为35-55的Asker C硬度。
19.一种鞋底、中底或内底,其由根据权利要求1-18中任一项所述的聚氨酯泡沫形成。
20.一种形成根据权利要求1-18中任一项所述的聚氨酯泡沫的方法,包括:
i)通过在室温下混合并在70℃下将PTMEG熔融过夜制备多元醇配制剂,
然后保持在40-50℃下以更好地处理和与其他组分一起计量加料;
ii)在聚氨酯泡沫机的搅拌反应釜中将多元醇配制剂加热至40-45℃的温度;和
iii)在聚氨酯泡沫机的异氰酸酯釜中将异氰酸酯预聚物加热至30-45℃;和iv)在大气压下将异氰酸酯预聚物与多元醇配制剂混合,并使用聚氨酯泡沫机将混合物倒入具有所需形状的加热模具中;
v)闭合模具,使反应物填充模具并反应给定的脱模时间以形成聚氨酯泡沫。
21.根据权利要求20所述的方法,其中形成聚氨酯的组合物具有50-80wt.%的多元醇配制剂和20-50wt.%的异氰酸酯预聚物,其中wt.%基于形成聚氨酯的组合物的总重量。
22.根据权利要求20或21所述的方法,其中加热的模具具有50-60℃的温度,并且脱模时间为5-15分钟。
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