CN104204017B - 座垫用聚氨酯泡沫 - Google Patents
座垫用聚氨酯泡沫 Download PDFInfo
- Publication number
- CN104204017B CN104204017B CN201380016646.2A CN201380016646A CN104204017B CN 104204017 B CN104204017 B CN 104204017B CN 201380016646 A CN201380016646 A CN 201380016646A CN 104204017 B CN104204017 B CN 104204017B
- Authority
- CN
- China
- Prior art keywords
- component
- polyurethane foam
- mass
- polyol
- polyether polyol
- 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.)
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- 229920005830 Polyurethane Foam Polymers 0.000 title claims abstract description 73
- 239000011496 polyurethane foam Substances 0.000 title claims abstract description 73
- 150000003077 polyols Chemical class 0.000 claims abstract description 122
- 229920005862 polyol Polymers 0.000 claims abstract description 103
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 63
- 229920000570 polyether Polymers 0.000 claims abstract description 63
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000005187 foaming Methods 0.000 claims abstract description 44
- 239000011550 stock solution Substances 0.000 claims abstract description 44
- 239000001294 propane Substances 0.000 claims abstract description 25
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000003252 repetitive effect Effects 0.000 claims abstract description 24
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 19
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 19
- 230000009477 glass transition Effects 0.000 claims abstract description 14
- 238000007151 ring opening polymerisation reaction Methods 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 19
- 239000006260 foam Substances 0.000 claims description 18
- 229920000642 polymer Polymers 0.000 claims description 13
- 239000012948 isocyanate Substances 0.000 claims description 11
- 239000003381 stabilizer Substances 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 150000002513 isocyanates Chemical class 0.000 claims description 8
- 150000002148 esters Chemical class 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007334 copolymerization reaction Methods 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000000116 mitigating effect Effects 0.000 abstract description 16
- 230000001603 reducing effect Effects 0.000 abstract description 15
- 229920001400 block copolymer Polymers 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 description 13
- 239000003054 catalyst Substances 0.000 description 12
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 150000005846 sugar alcohols Polymers 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 239000003431 cross linking reagent Substances 0.000 description 8
- 239000004088 foaming agent Substances 0.000 description 8
- 239000011435 rock Substances 0.000 description 8
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000002349 favourable effect Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- -1 aromatic isocyanate Chemical class 0.000 description 6
- 125000000524 functional group Chemical group 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 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 5
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 229920002323 Silicone foam Polymers 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000013514 silicone foam Substances 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 1
- MTZUIIAIAKMWLI-UHFFFAOYSA-N 1,2-diisocyanatobenzene Chemical compound O=C=NC1=CC=CC=C1N=C=O MTZUIIAIAKMWLI-UHFFFAOYSA-N 0.000 description 1
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical class NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- SVYKKECYCPFKGB-UHFFFAOYSA-N N,N-dimethylcyclohexylamine Chemical compound CN(C)C1CCCCC1 SVYKKECYCPFKGB-UHFFFAOYSA-N 0.000 description 1
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000012661 block copolymerization Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 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 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- BRMYZIKAHFEUFJ-UHFFFAOYSA-L mercury diacetate Chemical compound CC(=O)O[Hg]OC(C)=O BRMYZIKAHFEUFJ-UHFFFAOYSA-L 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
- 201000003152 motion sickness Diseases 0.000 description 1
- TXXWBTOATXBWDR-UHFFFAOYSA-N n,n,n',n'-tetramethylhexane-1,6-diamine Chemical compound CN(C)CCCCCCN(C)C TXXWBTOATXBWDR-UHFFFAOYSA-N 0.000 description 1
- DMQSHEKGGUOYJS-UHFFFAOYSA-N n,n,n',n'-tetramethylpropane-1,3-diamine Chemical compound CN(C)CCCN(C)C DMQSHEKGGUOYJS-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012974 tin catalyst Substances 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- NLYQRYBNYOLPJC-UHFFFAOYSA-N trimethyl(2-piperazin-1-ylethyl)azanium Chemical compound C[N+](C)(C)CCN1CCNCC1 NLYQRYBNYOLPJC-UHFFFAOYSA-N 0.000 description 1
- PTVDYMGQGCNETM-UHFFFAOYSA-N trityl 2-methylprop-2-enoate Chemical class C=1C=CC=CC=1C(C=1C=CC=CC=1)(OC(=O)C(=C)C)C1=CC=CC=C1 PTVDYMGQGCNETM-UHFFFAOYSA-N 0.000 description 1
- 238000012795 verification Methods 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
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- 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
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- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
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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
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- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7017—Upholstery springs ; Upholstery characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for
-
- 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
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/1808—Catalysts containing secondary or tertiary amines or salts thereof having alkylene polyamine 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
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/1833—Catalysts containing secondary or tertiary amines or salts thereof having ether, acetal, or orthoester 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- 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
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4072—Mixtures of compounds of group C08G18/63 with other macromolecular compounds
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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
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- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
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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
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- C08G18/4816—Two or more polyethers of different physical or chemical nature mixtures of two or more polyetherpolyols having at least three hydroxy groups
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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
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- 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
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- 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
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- C08G18/4833—Polyethers containing oxyethylene units
- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
- C08G18/4841—Polyethers containing oxyethylene units and other oxyalkylene units containing oxyethylene end 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
- C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
- C08G18/632—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers onto polyethers
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
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Abstract
一种座垫用聚氨酯泡沫,其通过将包含下述的发泡原液发泡成形而制得:多元醇组分(A),其包括30质量%至55质量%的聚醚多元醇(a‑1)和2质量%至20质量%的聚醚多元醇(a‑2),所述聚醚多元醇(a‑1)由通过环氧乙烷(EO)与环氧丙烷(PO)的开环聚合得到的嵌段共聚物构成并且EO重复单元与PO重复单元的摩尔比为5/95至25/75及数均分子量为6000至8000,所述聚醚多元醇(a‑2)由通过EO与PO的开环聚合得到的嵌段共聚物构成并且EO重复单元与PO重复单元的摩尔比为30/70至90/10及玻璃化转变点为‑65℃以下;和多异氰酸酯组分(B)。该座垫用聚氨酯泡沫兼具摇晃减轻性和应力松弛减低性,确保舒适的乘坐,没有摇晃的问题,并且甚至在低温环境下也显示出很小的硬度增加。
Description
技术领域
本发明涉及座垫用聚氨酯泡沫,具体而言涉及适合作为车辆用座垫的座垫用聚氨酯泡沫。
背景技术
聚氨酯泡沫根据目的需要具有各种性能,包括机械性能、绝热性能和振动吸收性能,特别是在车辆用座垫等中,需要具有高的回弹性(repulsive elasticity)和舒适性如乘坐舒适度。
车辆用座垫通常遭受如下这样的问题:当车辆换道或转弯时由于施加于人体的离心力导致座椅无法支撑身体,因而摇晃身体。为了减轻这种摇晃(shakiness),采取了以下这样的措施:(1)将用作聚氨酯泡沫原料的聚醚多元醇的分子量由高分子量改为低分子量,(2)在聚醚多元醇中的源自环氧乙烷的重复单元和源自环氧丙烷的重复单元中,增加环氧乙烷单元的比例,(3)增加用于形成聚氨酯泡沫的发泡原液中的含水量,和(4)增加交联剂的量。
然而,在采取这些措施时,可能存在以下问题:所得聚氨酯泡沫的回弹弹性和透气性降低,对乘坐舒适度重要的“应力松弛”劣化(增加)。换言之,在摇晃减轻性(shakiness-reducing property)和应力松弛减低性之间存在折中,即,当摇晃改进(降低)时,应力松弛劣化(增加),而当应力松弛改进时,摇晃劣化。因而,难以使摇晃减轻性和应力松弛减低性同时保持较高的水平。
为了解决该问题,关于通过将包含多元醇组分和异氰酸酯组分作为主要组分的聚氨酯发泡原液发泡成形而制得的聚氨酯泡沫,本发明人研发出一种具有优异振动吸收性能的轻质聚氨酯泡沫,其中使用分子量为3000至12000、不饱和度为0.03mEq/g以下及“分子量/官能团数”之比为1000至3000的聚醚多元醇作为所述多元醇,且有机改性无机填料混于其中(见专利文献1),并且进一步研发出一种聚氨酯泡沫,其中多元醇组分包括基于该多元醇组分为40质量%至55质量%的聚醚多元醇(i),其通过环氧乙烷和环氧丙烷的开环聚合得到,源自环氧乙烷的重复单元与源自环氧丙烷的重复单元的摩尔比为5/95至25/75,并且数均分子量为6000至8000,所述多元醇组分进一步包含基于该多元醇组分为5质量%至15质量%的聚醚多元醇(ii),其通过环氧丙烷的开环均聚或通过环氧乙烷与环氧丙烷的开环聚合得到,源自环氧乙烷的重复单元与源自环氧丙烷的重复单元的摩尔比为0/100至20/80,数均分子量为600至2000,并且其中的水的配混量相对于100质量份全部多元醇组分为2.0质量份以上(见专利文献2)。
相关技术文献
专利文献
专利文献1:JP-A-2008-127514
专利文献2:WO 2011/132645
发明内容
发明要解决的问题
当将专利文献1中公开的聚氨酯泡沫用作车辆用座垫时,该座垫在转弯期间有时会摇晃。如果摇晃程度较大,可预料到当在转弯期间施加离心加速度时人体的倾斜度变得更大。因而,在乘坐舒适度方面仍有改进空间。
另外,在专利文献2中公开的聚氨酯泡沫中摇晃程度得到改进(降低)。然而,应力松弛没有必要地降低,在乘坐舒适度方面存在改进空间。而且,揭露出该聚氨酯泡沫中,例如,当将其置于低温环境时其硬度增加,有时会损坏乘坐舒适度。
因而,本发明所要解决的问题是提供一种座垫用聚氨酯泡沫,其同时达到较高水平的摇晃减轻性和应力松弛减低性,从而提供舒适的乘坐且由此不存在摇晃的问题,并且在低温环境(例如5℃以下)下仅显示出小的硬度增加。
用于解决问题的方案
为解决上述问题,本发明人进行了深入的研究。结果,本发明人发现上述问题可通过由如下发泡原液制造的聚氨酯泡沫来解决:该发泡原液包含多元醇组分(A)和多异氰酸酯组分(B),其中所述多元醇组分(A)包含特定量的特定的两种多元醇组分。基于该发现完成了本发明。
即,本发明涉及以下[1]至[7]。
[1]一种座垫用聚氨酯泡沫,其通过将包含多元醇组分(A)和多异氰酸酯组分(B)的发泡原液发泡成形而制得,其中
所述多元醇组分(A)包括基于该多元醇组分为30质量%至55质量%的聚醚多元醇(a-1),其中所述聚醚多元醇(a-1)是通过环氧乙烷和环氧丙烷的开环聚合得到的嵌段共聚物,源自环氧乙烷的重复单元与源自环氧丙烷的重复单元的摩尔比为5/95至25/75并且数均分子量为6000至8000,和
所述多元醇组分(A)还包括基于该多元醇组分为2质量%至20质量%的聚醚多元醇(a-2),其中所述聚醚多元醇(a-2)是通过环氧乙烷和环氧丙烷的开环聚合得到的嵌段共聚物,源自环氧乙烷的重复单元与源自环氧丙烷的重复单元的摩尔比为30/70至90/10并且玻璃化转变点为-65℃以下。
[2]根据以上[1]所述的座垫用聚氨酯泡沫,其中所述多异氰酸酯组分(B)包括甲苯二异氰酸酯和/或二苯甲烷二异氰酸酯。
[3]根据以上[1]或[2]所述的座垫用聚氨酯泡沫,其中所述发泡原液按照使所述多异氰酸酯组分中的异氰酸酯基与所述发泡原液中的活性氢基的摩尔比为60/100至120/100的方式包括所述多异氰酸酯组分(B)。
[4]根据以上[1]至[3]中任一项所述的座垫用聚氨酯泡沫,其中所述多元醇组分(A)还包含1质量%至10质量%的聚醚多元醇(a-3),所述聚醚多元醇(a-3)通过环氧乙烷的开环均聚得到并且数均分子量为350至2000。
[5]根据以上[1]至[4]中任一项所述的座垫用聚氨酯泡沫,其中所述组分(a-2)的玻璃化转变点为-80℃至-65℃。
[6]根据以上[1]至[5]中任一项所述的座垫用聚氨酯泡沫,其中所述多元醇组分(A)还包括基于该多元醇组分为40质量%至60质量%的聚合物多元醇(a-5),所述聚合物多元醇(a-5)通过丙烯腈-苯乙烯共聚物与聚醚多元醇的接枝共聚得到,其中所述聚醚多元醇通过环氧乙烷和环氧丙烷的开环聚合得到,源自环氧乙烷的重复单元与源自环氧丙烷的重复单元的摩尔比为5/95至25/75并且数均分子量为3000至7000。
[7]根据以上[1]至[6]中任一项所述的座垫用聚氨酯泡沫,其还包含稳泡剂(E)。
发明的效果
根据本发明,可提供座垫用聚氨酯泡沫,其同时达到较高水平的摇晃减轻性和应力松弛减低性,从而提供舒适的乘坐且不具有摇晃的问题,并且在低温环境(例如5℃以下)下仅显示出小的硬度增加。
附图说明
[图1]是说明用于测定实施例和比较例中所得座垫的摇晃角度的设备的示意图。
具体实施方式
本发明的座垫用聚氨酯泡沫(此后可简称为“聚氨酯泡沫”)是通过将包含多元醇组分(A)和多异氰酸酯组分(B)的发泡原液发泡成形而制得的聚氨酯泡沫。
另外,称为“优选的”或“优选地”的规定词可任意选用,称为“优选的”或“优选地”规定词的组合可视为“更优选的”。
以下,将对各组分进行详细说明。
<多元醇组分(A)>
在发泡原液中,用作组分(A)的多元醇组分包含下述组分(a-1)和组分(a-2)作为必要组分。
(聚醚多元醇(a-1))
作为组分(a-1)的聚醚多元醇是通过环氧乙烷(以下可称为“EO”)和环氧丙烷(以下可称为“PO”)的开环聚合得到的嵌段共聚物,并且当源自环氧乙烷的重复单元(以下可称为“EO单元”)与源自环氧丙烷的重复单元(以下可称为“PO单元”)的摩尔比[EO单元/PO单元]为5/95至25/75且数均分子量为6000至8000时其是具有相当较高的分子量的聚醚多元醇。特别是,就优越的成形性和反应性而言,优选的是包括EO单元的嵌段存在于分子末端,更优选的是分子内部为包括PO单元的嵌段及分子末端为包括EO单元的嵌段。即,存在于分子内部的EO单元的量优选为5mol%以下,更优选为3mol%以下,仍更优选为实质上0mol%。
由于组分(a-1)的存在,应力松弛减低性特别地得到改善。作为组分(a-1),可单独使用一种聚醚多元醇,或者可组合两种以上的聚醚多元醇。
如上所述,要求EO单元与PO单元的摩尔比[EO单元/PO单元]为5/95至25/75。摩尔比[EO单元/PO单元]优选为8/92至25/75,更优选为10/90至20/80。
另外,要求数均分子量在6000至8000的范围内。当组分(a-1)的数均分子量低于6000时,可能会使回弹性降低。另一方面,当数均分子量超过8000时,可能无法消除摇晃。就此而言,数均分子量优选在7000至8000的范围内。
此外,在本发明中,数均分子量是指通过凝胶渗透色谱法(GPC法)以聚苯乙烯换算而计算得到的值。
通常,组分(a-1)的1个分子中所含的羟基数优选为2至4个,且特别是3个。当羟基数为4个以下时,原料的粘度不会增加。
作为组分(a-1)用聚醚多元醇,优选使用不饱和度低的聚醚多元醇。更具体地,通常,不饱和度优选为0.03mEq/g以下。当高分子量聚醚多元醇的不饱和度为0.03mEq/g以下时,本发明的聚氨酯泡沫的耐久性和硬度不会受到损害。另外,在本发明中“不饱和度”是指由如下方法测得的总不饱和度(mEq/g):按照JIS K1557-1970,使乙酸汞与样品中的不饱和键反应,使用氢氧化钾滴定所产生的释放出的乙酸。
为了同时达到优越的摇晃减轻性和应力松弛减低性的目的,组分(A)中组分(a-1)的含量基于组分(A)为30质量%至55质量%,优选为35质量%至50质量%,更优选为35质量%至45质量%。
(聚醚多元醇(a-2))
组分(a-2)用聚醚多元醇是通过EO与PO的开环聚合得到的嵌段共聚物,是源自EO的重复单元与源自PO的重复单元的摩尔比(EO/PO)为30/70至90/10并且玻璃化转变点为-65℃以下的聚醚多元醇。由于组分(a-2)的存在,聚氨酯泡沫在低温环境下的硬度增加可得到抑制。
在组分(a-2)中,为了同时达到优越的摇晃减轻性和应力松弛减低性的目的,EO单元与PO单元的摩尔比(EO单元/PO单元)优选为30/70至85/15,更优选为40/60至80/20,仍更优选为50/50至80/20,特别优选为55/45至75/25。组分(a-2)的数均分子量优选为1000至8000,更优选为1000至7000。
要求组分(a-2)的玻璃化转变点为-65℃以下,且该玻璃化转变点优选为-80℃至-65℃,更优选为-70℃至-65℃。
通常,组分(a-2)的1个分子中所含的羟基数优选为2至4个,特别优选为3个。当羟基数为4个以下时,原料的粘度不会增加。
作为组分(a-2)用聚醚多元醇,以与组分(a-1)相同的方式优选使用不饱和度低的聚醚多元醇。更具体地,通常,不饱和度优选为0.03mEq/g以下。当低分子量聚醚多元醇的不饱和度为0.03mEq/g以下时,本发明的聚氨酯泡沫的耐久性和硬度不会受到损害。
关于组分(a-2),可单独使用一种聚醚多元醇,或者可混合两种以上的聚醚多元醇。例如,可混合两种以上的具有不同数均分子量的聚醚多元醇,在此情况下,可使用具有任意上述预定值的玻璃化转变点的聚醚多元醇的混合物。
为抑制低温环境下的硬度增加的目的,组分(A)中组分(a-2)的含量基于组分(A)为2质量%至20质量%,优选为2质量%至15质量%,更优选为4质量%至15质量%。
(组分(A)用其它组分)
作为组分(A),通常,可使用除上述组分(a-1)和(a-2)以外的多元醇,例如,可提及下述组分(a-3)至(a-5)。特别是,优选使用选自组分(a-3)和(a-4)中的至少一个。
(聚醚多元醇(a-3))
组分(a-3)用聚醚多元醇是通过EO的开环均聚得到且数均分子量为350至2000的聚醚多元醇。随着组分(a-3),聚氨酯泡沫的耐久性将得到改善。另外,组分(a-3)包括“实质上”通过EO的开环均聚得到且其中共聚5mol%以下(更优选3mol%以下,仍更优选1mol%以下)的PO而没有明显减弱本发明效果的那些组分。
就上述观点而言,组分(a-3)的数均分子量优选为350至1500,更优选为350至1000,仍更优选为350至700。当该分子量小,例如为1000以下时,该组分也可视为交联剂。
通常,组分(a-3)的1个分子中所含的羟基数可为2至5个,特别优选为4个。当羟基数为5个以下时,原料的粘度不会增加。
在组分(A)包括组分(a-3)的情况下,为了改善耐久性及降低由湿热压缩引起的残余应力同时抑制闭孔的形成的目的,多元醇组分(A)中组分(a-3)的含量优选为1质量%至10质量%,更优选为1质量%至5质量%。
(聚醚多元醇(a-4))
发泡原液可包含下述聚醚多元醇(a-4)作为用于组分(A)的多元醇组分。
组分(a-4)用聚醚多元醇是通过PO的开环均聚得到且数均分子量为350至2000的具有相当低的分子量的聚醚多元醇。随着通过PO的开环均聚得到的组分(a-4),可进一步特别地改善摇晃减轻性。另外,组分(a-4)包括“实质上”通过PO的开环均聚得到且其中共聚5mol%以下(更优选3mol%以下,仍更优选1mol%以下)的EO而没有明显减弱本发明效果的那些组分。
关于组分(a-4),可单独使用一种聚醚多元醇,或者可组合两种以上的聚醚多元醇。
另外,当组分(a-4)的数均分子量为600以上时,可降低应力松弛。另一方面,当数均分子量为2000以下时,可进一步抑制摇晃。出于此观点,组分(a-4)的数均分子量优选为650至1500,更优选为700至1200。
优选的是,以与上述高分子量聚醚多元醇相同的方式,组分(a-4)的1个分子中所含的羟基数一般为2至4个,特别是3个。当羟基数为4个以下时,原料的粘度不会增加。
为了进一步改善摇晃减轻性和应力松弛减低性的目的,在组分(A)包括组分(a-4)的情况下,多元醇组分(A)中组分(a-4)的含量优选为2质量%至20质量%,更优选为2质量%至15质量%,仍更优选为2质量%至7质量%。
(聚合物多元醇(a-5))
组分(a-5)用聚合物多元醇是通过丙烯腈-苯乙烯共聚物与聚醚多元醇的接枝共聚得到的聚合物多元醇,其中所述聚醚多元醇是通过EO与PO的开环聚合得到以及EO单元与PO单元的摩尔比[EO单元/PO单元]为5/95至25/75且数均分子量为3000至7000的聚醚多元醇。另外,优选上述聚醚多元醇是通过EO与PO的开环聚合得到的嵌段共聚物。而且,优选包括EO单元的嵌段存在于分子末端,更优选分子内部为包括PO单元的嵌段及分子末端为包括EO单元的嵌段。即,存在于分子内部的EO单元的量优选为5mol%以下,更优选为3mol%以下,仍更优选为实质上0mol%。
硬度可通过聚合物多元醇赋予至聚氨酯泡沫,在评价样品的应力松弛减低性或摇晃减轻性时,组分(a-5)可有效地用于使该样品的硬度一致。
当组分(a-5)中EO单元与PO单元的摩尔比在上述范围以内时,可保持有利的成形性。出于相同的观点,组分(a-5)中EO单元与PO单元的摩尔比[EO单元/PO单元]优选为10/90至30/70。
另外,当组分(a-5)的数均分子量在上述范围以内时,粘度不会变大,还可保持大规模生产。出于相同的观点,数均分子量优选为4000至6000。
优选组分(a-5)的1个分子中所含的羟基数一般为2至4个,且特别是3个。当羟基数为4个以下时,原料的粘度不会增加。另外,通常,优选不饱和度为0.03mEq/g以下。
在组分(A)包括组分(a-5)的情况下,通常,多元醇组分(A)中组分(a-5)的含量优选为40质量%至60质量%,更优选为45质量%至55质量%。
上述多元醇组分(A)在液体温度为25℃时的粘度(在多种多元醇组合作为组分(A)的情况下,是指所有多元醇的混合物的粘度)优选为3000mPa·s以下,更优选为1800mPa·s以下。通过使用在该粘度范围内的聚合物多元醇,可抑制聚氨酯发泡原液的粘度增加速度,从而提高搅拌发泡原液的效率,因而使异氰酸酯基与羟基可更均匀地反应。由此,不仅与常规技术相比产生气体的生成效率增加,而且,就气体产生位置而言,气体在聚氨酯发泡原液中均匀产生,从而提供轻质且均匀的聚氨酯发泡成形制品。另外,在本发明中“粘度”是指按照JIS Z8803-1991在液体温度为25℃时使用毛细管粘度计测得的粘度。
<多异氰酸酯组分(B)>
关于发泡原液中用作组分(B)的多异氰酸酯组分,可使用各种公知的多官能脂肪族、脂环族或芳族异氰酸酯。例如,可提及甲苯二异氰酸酯(TDI)、二苯甲烷二异氰酸酯(MDI)、二环己基甲烷二异氰酸酯、二异氰酸三苯酯、二甲苯二异氰酸酯、聚亚甲基聚亚苯基聚异氰酸酯、六亚甲基二异氰酸酯、异佛尔酮二异氰酸酯、邻甲苯胺二异氰酸酯、萘二异氰酸酯、苯二甲撑二异氰酸酯和赖氨酸二异氰酸酯。可单独使用一种异氰酸酯,或者可组合两种以上的异氰酸酯。
在本发明中,就所产生的有利的成形密度范围而言,优选包含甲苯二异氰酸酯(TDI)和/或二苯甲烷二异氰酸酯(MDI)。
对发泡原液中作为组分(B)的多异氰酸酯的含量没有特殊限制。然而,可按照如下方式对含量期望地进行选择:为了不造成发泡原液无法搅拌并获得有利的发泡状态,多异氰酸酯组分中的异氰酸酯基与发泡原液中的活性氢基的摩尔比优选为60/100至120/100,更优选为70/100至115/100。
<发泡剂(C)>
在发泡原液中,发泡剂通常用作组分(C)。通常,优选使用水作为发泡剂。由于水与多异氰酸酯反应产生二氧化碳气体,因而水发挥了发泡剂的作用。另外,除水以外,还可使用聚氨酯泡沫的生产中常用的发泡剂(例如,含氢原子的卤代烃、液化二氧化碳和低沸点的烃)。
对组分(C)的混合量没有特殊限制。然而,该混合量相对于100质量份多元醇组分(A)优选为0.1至10质量份,更优选为0.3至5质量份,仍更优选为0.3至3质量份。当组分(C)的混合量相对于100质量份多元醇组分(A)为0.1质量份以上时,可达到充分的抑制摇晃的效果。
<催化剂(D)>
鉴于发泡成形中的反应性,发泡原液包含催化剂作为组分(D)。作为催化剂,可使用聚氨酯泡沫的生产中广泛使用的那些,根据目的和要求,可使用一种催化剂,或者可组合两种以上的催化剂。催化剂的具体实例包括:胺类催化剂,例如四甲基六亚甲基二胺、五甲基二亚乙基三胺、二甲基环己胺、二(二甲基氨乙基)醚、四甲基亚丙基二胺、三甲基氨乙基哌嗪、四甲基亚乙基二胺、二甲基苄基胺、甲基吗啉、乙基吗啉、三亚乙基二胺和二乙醇胺;和锡类催化剂,例如辛酸亚锡和月桂酸二丁基锡。可使用市售产品作为催化剂,例如可适当地使用三亚乙基二胺(“TEDA-L33”,Tosoh Corporation生产)和二(二甲基氨乙基)醚(“TOYOCAT-ET”,Tosoh Corporation生产)。
另外,对发泡原液中组分(D)的混合量没有特殊限制。然而,通常,该量相对于100质量份上述组分(A)的多元醇优选为0.05至0.5质量份,更优选为0.1至5质量份,仍更优选为0.1至3质量份,特别优选为0.1至1质量份。
<任选组分>
作为任选组分,在发泡原液中可组合稳泡剂(E)和/或交联剂(F)。另外,可根据需要在其中组合各种添加剂,例如,可在其中组合着色剂如颜料、增链剂、填料如碳酸钙、阻燃剂、抗氧化剂、紫外线吸收剂、光稳定剂、导电性物质例如炭黑、及抗菌剂。在这种情况下,添加剂的混合量在常用范围以内是可接受的。
(稳泡剂(E))
作为组分(E)用稳泡剂,可使用聚氨酯发泡成形制品广泛使用的那些,例如可使用各种硅酮类稳泡剂,如硅氧烷-聚醚嵌段共聚物。
通常,聚氨酯发泡原液中稳泡剂(E)的混合量相对于100质量份上述组分(A)的多元醇优选为0.3至5质量份,更优选为0.3至3质量份,仍更优选0.3至2质量份。当该量为0.3质量份以上时,可使多元醇组分和异氰酸酯组分的搅拌状态有利,从而促进期望的聚氨酯泡沫的生产。
(交联剂(F))
交联剂可包含在聚氨酯发泡原液中作为组分(F)。作为组分(F)用交联剂,可使用聚氨酯发泡成形制品广泛使用的那些。
通常,聚氨酯发泡原液中交联剂(F)的混合量相对于100质量份作为上述组分(A)的多元醇优选为0.5至10质量份。当该量为0.5质量份以上时,可充分得到交联剂的效果。另一方面,当该量为10质量份以下时,可得到适宜的闭孔的状态,从而保持有利的成形性,并且也不会发生泡沫消散。
<发泡原液的制备>
对本发明中发泡原液的制备方法没有特殊限制。例如,可优选提出如下方法:其中制备包括除组分(B)以外其它组分的混合物(此后可简称为“多元醇混合物”),然后使该混合物与多异氰酸酯组分(B)混合。
为尽可能防止发泡剂(C)与催化剂(D)之间接触的目的,多元醇混合物的制备优选以如下这样的方式进行:使催化剂(D)与上述多元醇组分(A)混合,然后包括稳泡剂(E)和交联剂(F)的其它组分与其混合,最后作为发泡组分的发泡剂(C)与其混合。
在本发明中,多元醇混合物优选具有2400mPa·s以下的在液体温度为25℃时的粘度。这是因为,可改善聚氨酯发泡原液的搅拌效率,从而提供期望的充分和均匀发泡的聚氨酯发泡成形制品。出于该观点,多元醇混合物在液体温度为25℃时的粘度优选为1800mPa·s以下。
<聚氨酯泡沫的发泡成形>
关于聚氨酯泡沫的发泡成形方法,可采用常规已知的发泡成形方法,其中将聚氨酯发泡原液注入模具中形成的模腔,然后进行发泡成形。然而,优选的是其中组合定时压力释放(timed pressure release)(TPR)。
在本发明中,TPR降低模具中的压力,从而形成互连气泡(interconnected airbubbles)。更具体而言,在将发泡原液供给至模具中形成的模腔的步骤之后并自胶凝时间起经过20至50秒之后,可包括使模具中的压力降低0.15至0.25MPa的步骤。胶凝时间是指将多元醇和异氰酸酯混合之后当出现粘度增加而产生一定胶凝强度的时间。
为防止聚氨酯发泡原液的组分分离的目的,优选通过在聚氨酯发泡原液注入模具的模腔之前即刻混合上述组分来制备聚氨酯发泡原液。此时,发泡原液的液体温度通常优选为10℃至50℃,更优选为20℃至40℃,仍更优选为25℃至35℃。对组分的混合顺序没有特殊限制。然而,为防止制备聚氨酯发泡原液之前出现不必要的粘度增加的目的,优选至少组分(A)的多元醇最后与组分(B)的异氰酸酯混合。随后,在制备发泡原液之后即刻,在大气压下将该发泡原液注入其中模腔可被减压的模具的模腔中,并在完成注入之后即刻,开始减压。然后,在模具中进行发泡和固化,并使其脱模而得到本发明的产品。通常,模具的温度优选为40℃至80℃,更优选为50℃至70℃,仍更优选为60℃至65℃。
<聚氨酯泡沫的性能>
为防止晕车并改善乘坐舒适度的目的,本发明的聚氨酯泡沫具有优选12%以下,更优选11%以下,通常仍更优选10.5%以下的应力松弛作为其性质。
而且,根据本发明的聚氨酯泡沫,可抑制摇晃,当该聚氨酯泡沫用作车辆用座垫时,可抑制转弯期间座椅的倾斜。
另外,在将常规温度(23℃)时的硬度视为100的场合下,0℃时的硬度可为109以下(可为108以下,或更有利的情况下可为106以下),或者-15℃时的硬度可为121以下(可为119以下,或在更有利的情况下可为116以下)。因此,低温环境下的硬度增加小,从而可得到乘坐舒适度而不取决于温度。另外,硬度是根据实施例中所述的方法计算得到的值。
实施例
接着,将参照以下实施例对本发明进行更详细地描述。然而,本发明不应视为受限于所述实施例。
(评价方法)
通过以下方法对实施例和比较例中生产的聚氨酯泡沫进行评价。
(1)25%硬度
使用英斯特朗型压缩测试机(instron-type compression testing machine),在23℃及50%相对湿度的环境条件下,测定用于将各聚氨酯泡沫压缩25%所需要的载荷(kgf)。另外,以相同方式测定0℃和-15℃时的25%硬度。然后,在将23℃时的25%硬度视为标准值(100)的场合下,计算其相应的值,并研究低温环境下硬度增加的程度。
(2)应力松弛(%)
使用直径为200mm的圆形压板以50mm/min的速度将各聚氨酯泡沫压缩等于其初始厚度的75%的距离。随后,除去载荷并使聚氨酯泡沫放置1分钟。以相同的速度再次将聚氨酯泡沫施加载荷,在当载荷达到196N(20kgf)时,停止压板,并且在使其放置5分钟之后读取载荷。根据下式计算应力松弛。
应力松弛率(%)=100×[当停止压板时的载荷(196N)-在使聚氨酯泡沫放置5分钟之后的载荷]/当停止压板时的载荷(196N)
该值越小,聚氨酯泡沫的应力松弛减低性越优越。
(3)摇晃减轻性
图1是说明测量摇晃角度的设备的示意图。将装配有角度计2的夹具3置于座垫样品1上,当将0至59N的力沿水平方向施加于夹具3时,使用角度计2测量夹具3的倾斜度。将测得的倾斜度用作摇晃减轻性的指数。
该值越小,聚氨酯泡沫的摇晃减轻性越优越。
实施例1至3和比较例1至3
根据表1所示组成配方制备各发泡原液。制备时,先制备包含除多异氰酸酯组分(B)以外其它组分的多元醇混合物,然后多异氰酸酯组分(B)与其混合。首先混合多元醇组分(A)和催化剂(D),然后稳泡剂(E)与其混合,最后发泡剂(C)(水)与其混合,从而制得各多元醇组合物。在制备期间,将各聚氨酯发泡原液的温度调至30℃。
随后,在制得各发泡原液之后即刻,在大气压下将发泡原液注入模具的模腔中,其中所述模腔可被减压且预设温度为60℃,并在注入完成之后即刻,开始减压。然后,在模具中进行发泡和固化,当自胶凝时间起经过30秒时,模具中的压力降低0.2MPa。其后,通过使其脱模而得到座垫用聚氨酯泡沫。通过上述方法对所得聚氨酯泡沫进行评价。评价结果示于表1。
表1
表1中的标注解释如下:
1)聚醚多元醇(a-1):EO/PO(摩尔比)=13/87;数均分子量为7500;官能团数为3;玻璃化转变点为-68℃
2)聚醚多元醇(a-2):EO/PO(摩尔比)=65/35;数均分子量1600和5000的混合值;官能团数为3;玻璃化转变点为-66℃
3)聚醚多元醇(a-3):EO100%;数均分子量为400;官能团数为4;玻璃化转变点为-60℃
4)聚醚多元醇(a-4):PO100%;数均分子量为700;官能团数为3;玻璃化转变点为-63℃
5)聚合物多元醇(a-5):EO/PO(摩尔比)=15/85;数均分子量为5000;官能团数为3;玻璃化转变点为-67℃
6)催化剂:三亚乙基二胺和(2-二甲基氨乙基)醚(“TEDA-L33”和“TOYOCAT-ET”(商品名),Tosoh Corporation生产)
7)硅酮稳泡剂(“SZ1325”(商品名),Toray Dow Corning Co.,Ltd.生产)
8)多异氰酸酯:TDI和MDI以如下方式混合——TDI/MDI(质量比)为80/20且发泡原液中NCO基团/活性氢基(摩尔比)为95/15至100/0。(使用Mitsui Chemicals,Inc.生产的“Cosmonate(注册商标)T-80”作为TDI,使用Nippon Polyurethane Industry Co.,Ltd.生产的“MR-200HR”作为MDI。)
在表1中,在实施例1与比较例1之间以及在实施例3与比较例2之间,以使得它们的应力松弛减低性和摇晃减轻性变得彼此几乎相同的方式调整它们的配方。因而,当比较这些配方时,应当理解,与比较例1相比,在实施例1中,即使在0℃和-15℃的低温环境条件下仍可抑制硬度增加。以相同的方式,应当理解,与比较例2相比,在实施例3中,即使在0℃和-15℃的低温环境条件下仍可抑制硬度增加。
另外,应当理解,同样在实施例2中,可兼具优越的应力松弛减低性和摇晃减轻性,并且实施例2中在低温环境条件下的硬度增加小。
此外,在仅使用聚醚多元醇(a-1)、(a-3)和(a-5)作为多元醇组分(A)的比较例3中,摇晃减轻性低劣。
产业上的可利用性
本发明的聚氨酯泡沫可兼具较高水平的摇晃减轻性和应力松弛减低性,并且聚氨酯泡沫在低温环境下的硬度增加小。因而,本发明的聚氨酯泡沫适用于座垫。特别是,该座垫在转弯期间不摇晃,当在转弯期间离心加速度施加于人体时可抑制人体的倾斜,因而,本发明的聚氨酯泡沫还适用于车辆用座垫。
附图标记说明
1 座垫样品
2 角度计
3 夹具
Claims (6)
1.一种座垫用聚氨酯泡沫,其通过将包含多元醇组分(A)和多异氰酸酯组分(B)的发泡原液发泡成形而制得,其中
所述多元醇组分(A)包括基于所述多元醇组分(A)为30质量%至55质量%的聚醚多元醇(a-1),其中所述聚醚多元醇(a-1)是通过环氧乙烷和环氧丙烷的开环聚合得到的嵌段共聚物,并且源自环氧乙烷的重复单元与源自环氧丙烷的重复单元的摩尔比为5/95至25/75并且数均分子量为6000至8000,和
所述多元醇组分(A)还包括基于所述多元醇组分(A)为2质量%至20质量%的聚醚多元醇(a-2),其中所述聚醚多元醇(a-2)是通过环氧乙烷和环氧丙烷的开环聚合得到的嵌段共聚物,并且源自环氧乙烷的重复单元与源自环氧丙烷的重复单元的摩尔比为30/70至90/10并且玻璃化转变点为-65℃以下,
所述多元醇组分(A)还包括基于所述多元醇组分为40质量%至60质量%的聚合物多元醇(a-5),所述聚合物多元醇(a-5)通过丙烯腈-苯乙烯共聚物与聚醚多元醇的接枝共聚得到,所述聚醚多元醇通过环氧乙烷和环氧丙烷的开环聚合得到、并且源自环氧乙烷的重复单元与源自环氧丙烷的重复单元的摩尔比为5/95至25/75且数均分子量为3000至7000。
2.根据权利要求1所述的座垫用聚氨酯泡沫,其中所述多异氰酸酯组分(B)包括甲苯二异氰酸酯和/或二苯甲烷二异氰酸酯。
3.根据权利要求1或2所述的座垫用聚氨酯泡沫,其中所述发泡原液按照使所述多异氰酸酯组分中的异氰酸酯基与所述发泡原液中的活性氢基的摩尔比为60/100至120/100的方式包括所述多异氰酸酯组分(B)。
4.根据权利要求1或2所述的座垫用聚氨酯泡沫,其中所述多元醇组分(A)还包含1质量%至10质量%的聚醚多元醇(a-3),所述聚醚多元醇(a-3)通过环氧乙烷的开环均聚得到并且数均分子量为350至2000。
5.根据权利要求1或2所述的座垫用聚氨酯泡沫,其中所述组分(a-2)的玻璃化转变点为-80℃至-65℃。
6.根据权利要求1或2所述的座垫用聚氨酯泡沫,其还包含稳泡剂(E)。
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