JP2021154116A - Vehicle cushion pad and vehicle seat cushion - Google Patents
Vehicle cushion pad and vehicle seat cushion Download PDFInfo
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- JP2021154116A JP2021154116A JP2021029920A JP2021029920A JP2021154116A JP 2021154116 A JP2021154116 A JP 2021154116A JP 2021029920 A JP2021029920 A JP 2021029920A JP 2021029920 A JP2021029920 A JP 2021029920A JP 2021154116 A JP2021154116 A JP 2021154116A
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- Prior art keywords
- polyurethane foam
- vehicle
- cushion pad
- cushion
- weight
- Prior art date
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- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 82
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 82
- 239000000654 additive Substances 0.000 claims abstract description 29
- 230000000996 additive effect Effects 0.000 claims abstract description 25
- 229920005862 polyol Polymers 0.000 claims abstract description 25
- -1 dicarboxylic acid ester compound Chemical class 0.000 claims abstract description 24
- 150000003077 polyols Chemical class 0.000 claims abstract description 22
- 239000012948 isocyanate Substances 0.000 claims abstract description 21
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 21
- 239000003054 catalyst Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 239000004088 foaming agent Substances 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 35
- 238000002844 melting Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
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- 230000000052 comparative effect Effects 0.000 description 41
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- 238000009423 ventilation Methods 0.000 description 9
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- 239000004721 Polyphenylene oxide Substances 0.000 description 8
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002994 raw material Substances 0.000 description 7
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- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 125000000524 functional group Chemical group 0.000 description 6
- 239000000463 material Substances 0.000 description 6
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- LGEZTMRIZWCDLW-UHFFFAOYSA-N 14-methylpentadecyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCCCCCCCCCCCC(C)C LGEZTMRIZWCDLW-UHFFFAOYSA-N 0.000 description 4
- 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 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
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- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
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- 239000001361 adipic acid Substances 0.000 description 2
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- 238000010438 heat treatment Methods 0.000 description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 1
- KYVBNYUBXIEUFW-UHFFFAOYSA-N 1,1,3,3-tetramethylguanidine Chemical compound CN(C)C(=N)N(C)C KYVBNYUBXIEUFW-UHFFFAOYSA-N 0.000 description 1
- YEVQZPWSVWZAOB-UHFFFAOYSA-N 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(I)C(CBr)=C1 YEVQZPWSVWZAOB-UHFFFAOYSA-N 0.000 description 1
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-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
- 125000003158 alcohol group Chemical group 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- DHTQKXHLXVUBCF-UHFFFAOYSA-N diethyl phenyl phosphate Chemical compound CCOP(=O)(OCC)OC1=CC=CC=C1 DHTQKXHLXVUBCF-UHFFFAOYSA-N 0.000 description 1
- XTBBZRRBOAVBRA-UHFFFAOYSA-N dimethyl phenyl phosphate Chemical compound COP(=O)(OC)OC1=CC=CC=C1 XTBBZRRBOAVBRA-UHFFFAOYSA-N 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
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- 235000011187 glycerol Nutrition 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
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- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012796 inorganic flame retardant Substances 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
- 239000010985 leather Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- NULJZZQMTQVLPG-UHFFFAOYSA-N n,n-dimethylmorpholin-4-amine Chemical compound CN(C)N1CCOCC1 NULJZZQMTQVLPG-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 125000005474 octanoate group Chemical group 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- OOCYPIXCHKROMD-UHFFFAOYSA-M phenyl(propanoyloxy)mercury Chemical compound CCC(=O)O[Hg]C1=CC=CC=C1 OOCYPIXCHKROMD-UHFFFAOYSA-M 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
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- 239000004014 plasticizer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001184 polypeptide Polymers 0.000 description 1
- 150000007519 polyprotic acids Polymers 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- BTURAGWYSMTVOW-UHFFFAOYSA-M sodium dodecanoate Chemical compound [Na+].CCCCCCCCCCCC([O-])=O BTURAGWYSMTVOW-UHFFFAOYSA-M 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 229940082004 sodium laurate Drugs 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 description 1
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- KOWVWXQNQNCRRS-UHFFFAOYSA-N tris(2,4-dimethylphenyl) phosphate Chemical compound CC1=CC(C)=CC=C1OP(=O)(OC=1C(=CC(C)=CC=1)C)OC1=CC=C(C)C=C1C KOWVWXQNQNCRRS-UHFFFAOYSA-N 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Images
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
本発明は、車両用クッションパッドと、その車両用クッションパッドがクッション本体の上に載置された車両用シートクッションに関する。 The present invention relates to a vehicle cushion pad and a vehicle seat cushion in which the vehicle cushion pad is placed on a cushion body.
従来、着座感を向上させるため、クッション本体の上にクッションパッドが載置された車両用シートクッションがある。
例えば、特許文献１には、モールドクッションの上に軟質スラブポリウレタン発泡体が積層されたものがある（特許文献１）。
Conventionally, there is a vehicle seat cushion in which a cushion pad is placed on the cushion body in order to improve the seating feeling.
For example, in
しかし、従来の車両のシートには、車両走行時の振動による不快感の低減が望まれている。 However, conventional vehicle seats are desired to reduce discomfort due to vibration during vehicle travel.
本発明は、前記の点に鑑みなされたものであり、車両走行時の振動による不快感を低減させた車両用クッションパッドと、その車両用クッションパッドがクッション本体の上に載置された車両用シートクッションの提供を目的とする。 The present invention has been made in view of the above points, and is a vehicle cushion pad that reduces discomfort due to vibration during vehicle running, and a vehicle cushion pad on which the vehicle cushion pad is placed on a cushion body. The purpose is to provide a seat cushion.
本発明の第１態様は、ポリウレタン発泡体で構成された車両用クッションパッドにおいて、前記ポリウレタン発泡体は、ポリオール、イソシアネート、触媒、発泡剤、添加剤を含むポリウレタン発泡体組成物で形成され、前記添加剤は、重量平均分子量が５００〜５０００のジカルボン酸エステル化合物であり、前記ポリウレタン発泡体におけるＪＩＳ Ｋ ６４００−７：２０１２に準じた通気量が、６．０ｃｃ／ｃｍ２／ｓ以上であることを特徴とする。 The first aspect of the present invention is a cushion pad for a vehicle made of a polyurethane foam, wherein the polyurethane foam is formed of a polyurethane foam composition containing a polyol, an isocyanate, a catalyst, a foaming agent, and an additive. The additive is a dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000, and the air volume of the polyurethane foam according to JIS K 6400-7: 2012 is 6.0 cc / cm 2 / s or more. It is characterized by.
本発明の第２態様は、第１態様において、前記ポリウレタン発泡体は、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満であり、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満であることを特徴とする。 In the second aspect of the present invention, in the first aspect, the polyurethane foam has a resonance magnification of less than 1.5 to 3.43 in a vibration test by JASO B407 and a transmission rate of 1 or more at a vibration frequency of 5-10 Hz. The integrated value is less than 500 to 915.
本発明の第３態様は、第１態様または第２態様において、前記ポリウレタン発泡体は、ＪＩＳ Ｋ ６４００−２：２０１２６．７Ｄ法に準拠した硬さが８０〜２５０Ｎであることを特徴とする。 A third aspect of the present invention is characterized in that, in the first or second aspect, the polyurethane foam has a hardness of 80 to 250 N in accordance with the JIS K 6400-2: 20126.7D method.
本発明の第４態様は、第１態様から第３態様の何れか一において、前記重量平均分子量が５００〜５０００のジカルボン酸エステル化合物は、融点が−２０℃以上であることを特徴とする。 A fourth aspect of the present invention is characterized in that, in any one of the first to third aspects, the dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000 has a melting point of −20 ° C. or higher.
本発明の第５態様は、クッション本体の上に第１態様から第４態様の何れか一のクッションパッドが積層された車両用シートクッションである。 A fifth aspect of the present invention is a vehicle seat cushion in which a cushion pad according to any one of the first to fourth aspects is laminated on a cushion body.
本発明の第１態様によれば、ポリウレタン発泡体組成物に含まれる添加剤を、重量平均分子量が５００〜５０００のジカルボン酸エステル化合物とし、ポリウレタン発泡体におけるＪＩＳ Ｋ ６４００−７：２０１２に準じた通気量が、６．０ｃｃ／ｃｍ２／ｓ以上であることにより、車両走行時の振動による不快感を低減させることができる。 According to the first aspect of the present invention, the additive contained in the polyurethane foam composition is a dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000, and conforms to JIS K 6400-7: 2012 in the polyurethane foam. When the air volume is 6.0 cc / cm 2 / s or more, the discomfort caused by vibration during vehicle running can be reduced.
シートクッションの振動乗り心地性能に関して、Ｂｒｉｔｉｓｈ Ｓｔａｎｄａｒｄ ６８４１（ＢＳ ６８４１）によると、シート上下振動に対する不快度は、５〜１６Ｈｚで最も敏感であり、その周波数帯から遠ざかるに従って、不快感の感度は低下するとされている。
本発明の第２態様では、ポリウレタン発泡体は、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満と低いため、不快度に対する乗員の感度が鈍くなり、かつ不快に感じる振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満と小さいため、感じる不快度が低くなり、座り心地が良好になる。
According to British Standard 6841 (BS 6841) regarding the vibration riding comfort performance of the seat cushion, the discomfort to the vertical vibration of the seat is most sensitive at 5 to 16 Hz, and the sensitivity of the discomfort decreases as the distance from the frequency band increases. Has been done.
In the second aspect of the present invention, since the polyurethane foam has a low resonance magnification of less than 1.5 to 3.43 in the vibration test by JASO B407, the sensitivity of the occupant to the degree of discomfort becomes dull and the vibration frequency feels unpleasant. Since the integrated value of the transmission rate of 1 or more at 5-10 Hz is as small as 500 to less than 915, the degree of discomfort felt is low and the sitting comfort is improved.
本発明の第３態様によれば、ポリウレタン発泡体は、ＪＩＳ Ｋ ６４００−２：２０１２ ６．７Ｄ法に準拠した硬さが８０〜２５０Ｎであることにより、着座時の底付きを抑え、座り心地を良好にできる。 According to the third aspect of the present invention, the polyurethane foam has a hardness of 80 to 250 N in accordance with the JIS K 6400-2: 2012 6.7D method, thereby suppressing bottoming when seated and providing a comfortable seating comfort. Can be done well.
本発明の第４態様によれば、重量平均分子量が５００〜５０００のジカルボン酸エステル化合物は、融点が−２０℃以上であるため、着座時の感触を良好にできる。 According to the fourth aspect of the present invention, the dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000 has a melting point of −20 ° C. or higher, so that the feeling at the time of sitting can be improved.
本発明の第５態様によれば、本発明のクッションパッドがクッション本体の上に積層された車両用シートクッションは、クッションパッドが奏する効果によって、車両走行時の振動による不快感を低減させることができる。 According to the fifth aspect of the present invention, the vehicle seat cushion in which the cushion pad of the present invention is laminated on the cushion body can reduce discomfort due to vibration during vehicle running due to the effect of the cushion pad. can.
以下に、本発明の車両用クッションパッドと、車両用シートクッションの実施形態について、図１に示す車両用シート１０を用いて説明する。
図１に示す車両用シート１０は、シートフレーム１１、クッション本体２１、クッションパッド３１、表皮材３５からなる。
クッションパッド３１は、本発明の車両用クッションパッドからなり、クッション本体２１とクッションパッド３１が本発明の車両用シートクッション４０を構成する。
なお、図１は、座部側のみを示し、背もたれ側を省略した。また、温調シートクッションの場合、クッションパッド３１上にヒーター（図示せず）が配置され、ヒーターごと表皮材３５で覆われる。
Hereinafter, an embodiment of the vehicle cushion pad and the vehicle seat cushion of the present invention will be described with reference to the
The
The cushion pad 31 is composed of the vehicle cushion pad of the present invention, and the cushion body 21 and the cushion pad 31 constitute the
Note that FIG. 1 shows only the seat side, and the backrest side is omitted. Further, in the case of the temperature control seat cushion, a heater (not shown) is arranged on the cushion pad 31, and the heater is covered with the skin material 35.
シートフレーム１１は、車両用シートを支持すると共に車室内に固定するものであり、金属等の剛性の高い材質からなり、車種等に応じた構造とされている。 The seat frame 11 supports and fixes the vehicle seat in the vehicle interior, is made of a highly rigid material such as metal, and has a structure suitable for the vehicle type and the like.
クッション本体２１は、ポリウレタン発泡体等の弾性発泡体からなる。クッション本体２１は、乗員の体重を支持できるように、クッションパッド３１と比べて、高硬度で、長期使用による弾性復元力低下が少ない。好ましいクッション本体２１として、硬さ（ＪＩＳ Ｋ６４００−２：２０１２ ６．７ Ｄ法））８０〜２５０Ｎ、密度（ＪＩＳ Ｋ ７２２２）３０〜１５０ｋｇ／ｍ３、より好ましくは５０〜１００ｋｇ／ｍ３、反発弾性（ＪＩＳ Ｋ ６４００−３：２０１１）２５〜５５％のポリウレタン発泡体が好ましい。
また、図示のクッション本体２１は、着座者の臀部のサポート性を高めるため、上面の左右両側部が盛り上がり、中央部が低くされている。低くなった中央部にクッションパッド３１が載置される。
The cushion body 21 is made of an elastic foam such as a polyurethane foam. The cushion body 21 has a higher hardness than the cushion pad 31 so that it can support the weight of the occupant, and the decrease in elastic restoring force due to long-term use is small. As a preferable cushion body 21, hardness (JIS K6400-2: 2012 6.7 D method)) 80 to 250 N, density (JIS K 7222) 30 to 150 kg / m 3 , more preferably 50 to 100 kg / m 3 , repulsion. A polyurethane foam having an elasticity (JIS K 6400-3: 2011) of 25 to 55% is preferable.
Further, in the illustrated cushion body 21, the left and right side portions of the upper surface of the cushion body 21 are raised and the central portion is lowered in order to enhance the supportability of the buttocks of the seated person. The cushion pad 31 is placed in the lowered central portion.
クッションパッド（本発明の車両用クッションパッド）３１は、ポリオール、イソシアネート、触媒、発泡剤、添加剤を含むポリウレタン発泡体組成物（ポリウレタン発泡体原料）から形成されている。 The cushion pad (cushion pad for a vehicle of the present invention) 31 is formed of a polyurethane foam composition (polyurethane foam raw material) containing a polyol, an isocyanate, a catalyst, a foaming agent, and an additive.
ポリオールとしては、ポリウレタン発泡体用のポリオールを使用することができ、例えば、ポリエーテルポリオール、ポリエステルポリオール、ポリエーテルエステルポリオール等の何れでもよく、それらの一種類あるいは複数種類を使用してもよい。 As the polyol, a polyol for a polyurethane foam can be used, and for example, any of a polyether polyol, a polyester polyol, a polyether ester polyol, and the like may be used, and one or more of them may be used.
ポリエーテルポリオールとしては、例えば、エチレングリコール、ジエチレングリコール、プロピレングリコール、ジプロピレングリコール、ブチレングリコール、ネオペンチルグリコール、グリセリン、ペンタエリスリトール、トリメチロールプロパン、ソルビトール、シュークロース等の多価アルコールにエチレンオキサイド（ＥＯ）、プロピレンオキサイド（ＰＯ）等のアルキレンオキサイドを付加したポリエーテルポリオールを挙げることができる。 Polyether polyols include, for example, polyhydric alcohols such as ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, neopentyl glycol, glycerin, pentaerythritol, trimethylolpropane, sorbitol, and shoe cloth, and ethylene oxide (EO). ), Polyether polyol to which alkylene oxide such as propylene oxide (PO) is added.
ポリエステルポリオールとしては、例えば、マロン酸、コハク酸、アジピン酸等の脂肪族カルボン酸やフタル酸等の芳香族カルボン酸と、エチレングリコール、ジエチレングリコール、プロピレングリコール等の脂肪族グリコール等とから重縮合して得られたポリエステルポリオールを挙げることできる。
また、ポリエーテルエステルポリオールとしては、前記ポリエーテルポリオールと多塩基酸を反応させてポリエステル化したもの、あるいは１分子内にポリエーテルとポリエステルの両セグメントを有するものを挙げることができる。
As the polyester polyol, for example, it is polycondensed from an aliphatic carboxylic acid such as malonic acid, succinic acid and adipic acid, an aromatic carboxylic acid such as phthalic acid, and an aliphatic glycol such as ethylene glycol, diethylene glycol and propylene glycol. The polyester polyol obtained in the above can be mentioned.
Further, examples of the polyether ester polyol include those obtained by reacting the polyether polyol with a polybasic acid to form a polyester, or those having both segments of polyether and polyester in one molecule.
ポリオールについては、水酸基価（ＯＨＶ）が３０〜３００ｍｇＫＯＨ／ｇ、官能基数が２〜４、分子量Ｍｗが５００〜７０００が好ましく、より好ましくは分子量Ｍｗが２０００〜６０００であるポリオールを単独または複数用いることが好ましい。 As for the polyol, a hydroxyl value (OHV) of 30 to 300 mgKOH / g, a number of functional groups of 2 to 4, a molecular weight of Mw of 500 to 7000 is preferable, and more preferably, a polyol having a molecular weight of Mw of 2000 to 6000 is used alone or in combination. Is preferable.
イソシアネートとしては、イソシアネート基を２以上有する脂肪族系または芳香族系ポリイソシアネート、それらの混合物、およびそれらを変性して得られる変性ポリイソシアネートを使用することができる。脂肪族系ポリイソシアネートとしては、ヘキサメチレンジイソシアネート、イソホロンジイソシアネート、ジシクロヘキサメタンジイソシアネート等を挙げることができ、芳香族ポリイソシアネートとしては、トルエンジイソシアネート（ＴＤＩ）、ジフェニルメタンジイソシアネート（ＭＤＩ）、ナフタレンジイソシアネート、キシリレンジイソシアネート、ポリメリックＭＤＩ（クルードＭＤＩ）等を挙げることができる。なお、ポリオールと過剰のポリイソシアネートを反応させて得られる末端にイソシアネート基を有するプレポリマーも使用することができる。 As the isocyanate, an aliphatic or aromatic polyisocyanate having two or more isocyanate groups, a mixture thereof, and a modified polyisocyanate obtained by modifying them can be used. Examples of the aliphatic polyisocyanate include hexamethylene diisocyanate, isophorone diisocyanate, and dicyclohexamethane diisocyanate, and examples of the aromatic polyisocyanate include toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), naphthalenediocyanate, and xylyl. Examples thereof include range isocyanate and polypeptide MDI (crude MDI). A prepolymer having an isocyanate group at the terminal obtained by reacting a polyol with an excess of polyisocyanate can also be used.
イソシアネートインデックス（ＩＮＤＥＸ）は９０〜１３０が好ましい。イソシアネートインデックスは、［（ポリウレタン発泡体原料中のイソシアネート当量／ポリウレタン発泡体原料中の活性水素の当量）×１００］で計算される。 The isocyanate index (INDEX) is preferably 90 to 130. The isocyanate index is calculated by [(isocyanate equivalent in polyurethane foam raw material / equivalent of active hydrogen in polyurethane foam raw material) × 100].
触媒としては、ポリウレタン発泡体用として公知のものを用いることができる。例えば、トリエチルアミン、トリエチレンジアミン、ジエタノールアミン、ジメチルアミノモルフォリン、Ｎ−エチルモルホリン、テトラメチルグアニジン等のアミン触媒や、スタナスオクトエートやジブチルチンジラウレート等の錫触媒やフェニル水銀プロピオン酸塩あるいはオクテン酸鉛等の金属触媒（有機金属触媒とも称される。）を挙げることができる。触媒の合計量は、ポリオール１００重量部に対して０．１〜２重量部程度が好ましい。 As the catalyst, a catalyst known for polyurethane foams can be used. For example, amine catalysts such as triethylamine, triethylenediamine, diethanolamine, dimethylaminomorpholine, N-ethylmorpholine, tetramethylguanidine, tin catalysts such as stanas octoate and dibutyltin dilaurate, phenylmercuric propionate or lead octenoate. And other metal catalysts (also referred to as organic metal catalysts). The total amount of the catalyst is preferably about 0.1 to 2 parts by weight with respect to 100 parts by weight of the polyol.
発泡剤としては、水、代替フロンあるいはペンタンなどの炭化水素を、単独または組み合わせて使用できる。水の場合は、ポリイソシアネートとの反応時に炭酸ガスを発生し、その炭酸ガスによって発泡がなされる。発泡剤としての水の量は、ポリオール１００重量部に対して１〜６重量部程度が好ましい。また、水と共に他の発泡剤を併用する場合、他の発泡剤の量は適宜決定される。 As the foaming agent, hydrocarbons such as water, CFC substitutes or pentane can be used alone or in combination. In the case of water, carbon dioxide gas is generated during the reaction with polyisocyanate, and the carbon dioxide gas causes foaming. The amount of water as a foaming agent is preferably about 1 to 6 parts by weight with respect to 100 parts by weight of the polyol. When another foaming agent is used in combination with water, the amount of the other foaming agent is appropriately determined.
添加剤としては、重量平均分子量が５００〜５０００、好ましくは８００〜３０００のジカルボン酸エステル化合物が用いられる。ジカルボン酸エステルはジカルボン酸とアルコールのエステル縮合物であり、アルコール部位の末端は炭素だけでなく、ヒドロキシル基、アミノ基でも構わない。 As the additive, a dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000, preferably 800 to 3000 is used. The dicarboxylic acid ester is an ester condensate of a dicarboxylic acid and an alcohol, and the terminal of the alcohol moiety may be a hydroxyl group or an amino group as well as carbon.
ジカルボン酸エステル化合物の重量平均分子量が５００未満の場合、振動試験の振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が大になり、振動による不快感を低減させる効果が小さくなる。一方、ジカルボン酸エステル化合物の重量平均分子量が５０００を越えると、ポリウレタン発泡体組成物の粘度が高くなり、クッションパッドとして使用可能な良好な発泡状態のポリウレタン発泡体が得られなくなる。
また、重量平均分子量が５００〜５０００のジカルボン酸エステル化合物は、融点が−２０℃以上であるものが好ましく、より好ましくは０℃以上であり、更に好ましくは２５℃以上である。融点が−２０℃以上であり、重量平均分子量が５００〜５０００である、ジカルボン酸エステル化合物は、着座時の感触を良好にできる。
When the weight average molecular weight of the dicarboxylic acid ester compound is less than 500, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz in the vibration test becomes large, and the effect of reducing discomfort due to vibration becomes small. On the other hand, when the weight average molecular weight of the dicarboxylic acid ester compound exceeds 5000, the viscosity of the polyurethane foam composition becomes high, and a polyurethane foam in a good foamed state that can be used as a cushion pad cannot be obtained.
The dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000 preferably has a melting point of −20 ° C. or higher, more preferably 0 ° C. or higher, still more preferably 25 ° C. or higher. A dicarboxylic acid ester compound having a melting point of −20 ° C. or higher and a weight average molecular weight of 500 to 5000 can have a good feel when seated.
重量平均分子量が５００〜５０００のジカルボン酸エステル化合物の量は、ポリオール１００重量部に対して５〜１５０重量部程度が好ましく、より好ましくは１０〜１００重量部である。５重量部未満の場合、振動による不快感に対する低減効果が小さくなる。一方、１５０重量部を越えると、クッションパッドとして使用可能な良好な発泡状態のポリウレタン発泡体が得られなくなる。 The amount of the dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000 is preferably about 5 to 150 parts by weight, more preferably 10 to 100 parts by weight, based on 100 parts by weight of the polyol. If it is less than 5 parts by weight, the effect of reducing discomfort due to vibration becomes small. On the other hand, if it exceeds 150 parts by weight, a polyurethane foam in a good foamed state that can be used as a cushion pad cannot be obtained.
本発明で使用可能な、重量平均分子量が５００〜５０００のジカルボン酸エステル化合物としては、例えば、ダイマー酸ジステアリル（重量平均分子量；９００、融点；２３℃、ＯＨ値；１０）、ダイマー酸ジラウリル（重量平均分子量；８１５、融点；２３℃、ＯＨ値；１０）、ダイマー酸ポリエステルポリオール（重量平均分子量；２５００、融点；−２０℃未満、ＯＨ値；７４．４）等を挙げることができる。 Examples of the dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000 that can be used in the present invention include distearyl dimerate (weight average molecular weight; 900, melting point; 23 ° C., OH value; 10), dilauryl dimerate ( Weight average molecular weight; 815, melting point; 23 ° C., OH value; 10), polyester polyol dimerate (weight average molecular weight; 2500, melting point; less than -20 ° C., OH value: 74.4) and the like can be mentioned.
ポリウレタン発泡体組成物には、その他の適宜配合される主なものとして、整泡剤、難燃剤、充填剤、安定剤、着色剤、可塑剤、抗菌剤等を挙げることができる。 Other main components of the polyurethane foam composition to be appropriately blended include a foam stabilizer, a flame retardant, a filler, a stabilizer, a colorant, a plasticizer, an antibacterial agent, and the like.
整泡剤としては、シリコーン化合物、ドデシルベンゼンスルホン酸ナトリウム、ラウリル酸ナトリウム等のアニオン系界面活性剤、ポリエーテルシロキサン、フェノール系化合物等が挙げられる。整泡剤の含有量は、ポリオール１００重量部に対して０．５〜５．０重量部を例示する。 Examples of the defoaming agent include silicone compounds, anionic surfactants such as sodium dodecylbenzenesulfonate and sodium laurate, polyethersiloxanes, phenolic compounds and the like. The content of the defoaming agent is exemplified by 0.5 to 5.0 parts by weight with respect to 100 parts by weight of the polyol.
難燃剤としては、トリフェニルホスフェート、トリクレジルホスフェート、トリキシレニルホスフェート、クレジルジフェニルホスフェート、トリメチルホスフェート、トリエチルホスフェート、トリブチルホスフェート、トリオクチルホスフェート、ジエチルフェニルホスフォネート、ジメチルフェニルホスフォネート、レゾルシノールジフェニルホスフェート等のリン酸エステル系難燃剤や、水酸化マグネシウムや水酸化アルミニウム等の無機系難燃剤が挙げられる。難燃剤の量は、ポリオール１００重量部に対して３〜３０重量部程度を挙げる。 Flame retardants include triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresil diphenyl phosphate, trimethyl phosphate, triethyl phosphate, tributyl phosphate, trioctyl phosphate, diethylphenyl phosphate, dimethylphenyl phosphate, resorcinol. Phosphate-based flame retardants such as diphenyl phosphate and inorganic flame retardants such as magnesium hydroxide and aluminum hydroxide can be mentioned. The amount of the flame retardant is about 3 to 30 parts by weight with respect to 100 parts by weight of the polyol.
ポリウレタン発泡体の製造は、スラブ発泡或いはモールド発泡の何れでもよい。
スラブ発泡は、ポリウレタン発泡体組成物（ポリウレタン発泡体原料）を混合してベルトコンベア上に吐出し、大気圧下、常温で発泡させる方法である。スラブ発泡されたポリウレタン発泡体は、その後に所定のサイズに裁断されてクッションパッド３１とされる。
The polyurethane foam may be produced by either slab foaming or mold foaming.
Slab foaming is a method in which a polyurethane foam composition (polyurethane foam raw material) is mixed and discharged onto a belt conveyor, and foamed at room temperature under atmospheric pressure. The slab-foamed polyurethane foam is then cut to a predetermined size to form the cushion pad 31.
一方、モールド発泡は、モールド（金型）のキャビティにポリウレタン発泡体組成物（ポリウレタン発泡体原料）を混合して注入し、キャビティ形状に発泡させる方法である。キャビティは、クッションパッド３１の形状とされている。 On the other hand, mold foaming is a method in which a polyurethane foam composition (polyurethane foam raw material) is mixed and injected into a cavity of a mold (mold) and foamed into a cavity shape. The cavity has the shape of a cushion pad 31.
ポリウレタン発泡体の通気量は、ＪＩＳ Ｋ ６４００−７：２０１２に準じた通気量が、６．０ｃｃ／ｃｍ２／ｓ以上、好ましくは１０〜１５０ｃｃ／ｃｍ２／ｓである。通気量が６．０ｃｃ／ｃｍ２／ｓ未満の場合、比較例１と比べて比較例４及び比較例５に示す通り、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が９１５から１０７２や１０６５に増加し、防振性の効果が得られず、むしろ損なってしまう。一般的にポリウレタン発泡体の通気量は発泡剤、アミン触媒、整泡剤、錫触媒、イソシアネートの配合でコントロールできるが、本発明における前記重量平均分子量が５００〜５０００のジカルボン酸エステル化合物の添加でも、ポリウレタン発泡体の通気量をコントロールできる。
As for the air volume of the polyurethane foam, the air volume according to JIS K 6400-7: 2012 is 6.0 cc / cm 2 / s or more, preferably 10 to 150 cc / cm 2 / s. When the air flow rate is less than 6.0 cc / cm 2 / s, as shown in Comparative Example 4 and Comparative Example 5 as compared with Comparative Example 1, the integrated value of the
ポリウレタン発泡体の振動特性は、ＪＡＳＯ Ｂ４０７における振動試験の共振倍率が好ましくは１．５〜３．４３未満、より好ましくは１．７〜３．０、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満、より好ましくは５００〜８７０である。前記のように、ポリウレタン発泡体は、共振倍率及び、不快に感じる振動周波数５−１０Ｈｚにおける伝達率１以上の積分値からなる振動特性が前記範囲にあると、不快度に対する乗員の感度を鈍くでき、座り心地を良好にできる。ポリウレタン発泡体の振動特性を前記重量平均分子量が５００〜５０００のジカルボン酸エステル化合物の添加により、達成できる。 Regarding the vibration characteristics of the polyurethane foam, the resonance magnification of the vibration test in JASO B407 is preferably 1.5 to less than 3.43, more preferably 1.7 to 3.0, and the transmission rate is 1 or more at a vibration frequency of 5-10 Hz. The integrated value is less than 500 to 915, more preferably 500 to 870. As described above, the polyurethane foam can reduce the sensitivity of the occupant to the degree of discomfort when the resonance characteristic and the vibration characteristic consisting of the integral value of the transmission rate of 1 or more at the vibration frequency 5-10 Hz which is unpleasant are in the above range. , You can sit comfortably. The vibration characteristics of the polyurethane foam can be achieved by adding the dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000.
ポリウレタン発泡体の硬さは、ＪＩＳ Ｋ６４００−２：２０１２ ６．７Ｄ法に準拠した硬さが好ましくは８０〜２５０Ｎであり、より好ましくは９０〜１８０Ｎである。硬さが低すぎると、着座時に底付きを生じて座り心地が悪くなり、一方、硬すぎると着座時の感触が悪くなる。一般的にポリウレタン発泡体の硬さは発泡剤、錫触媒、イソシアネートの配合でコントロールできるが、本発明における前記重量平均分子量が５００〜５０００のジカルボン酸エステル化合物の添加でも、ポリウレタン発泡体の硬さをコントロールできる。 The hardness of the polyurethane foam is preferably 80 to 250 N, more preferably 90 to 180 N, in accordance with the JIS K6400-2: 2012 6.7D method. If the hardness is too low, bottoming will occur when sitting and the sitting comfort will be poor, while if it is too hard, the feeling when sitting will be poor. Generally, the hardness of the polyurethane foam can be controlled by blending a foaming agent, a tin catalyst, and an isocyanate, but even if the dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000 is added in the present invention, the hardness of the polyurethane foam is also controlled. Can be controlled.
ポリウレタン発泡体の密度（ＪＩＳ Ｋ７２２０に準拠）は、３０〜１５０ｋｇ／ｍ３が好ましく、より好ましくは５０〜１００ｋｇ／ｍ３である。密度が低すぎると、硬度が低くなって、底付きを生じ易くなり、その逆に密度が高すぎると、クッション性が低下すると共に重くなり、車両の軽量性に貢献できなくなる。一般的にポリウレタン発泡体の密度は発泡剤、アミン触媒、錫触媒、イソシアネートの配合でコントロールできるが、本発明における前記重量平均分子量が５００〜５０００のジカルボン酸エステル化合物の添加でも、ポリウレタン発泡体の密度をコントロールできる。
The density of the polyurethane foam (according to JIS K7220) is preferably 30 to 150 kg /
表皮材３５は、ファブリック、レザー、合成樹脂シート等の適宜の材質からなり、縫製等によって所定形状にされて車両用シートクッション４０の外面に被せられる。
The skin material 35 is made of an appropriate material such as fabric, leather, or a synthetic resin sheet, is formed into a predetermined shape by sewing or the like, and is placed on the outer surface of the
以下の原料を図２に示す配合としたポリウレタン発泡体組成物（ポリウレタン発泡体原料）から、実施例と比較例の車両用クッションパッド用ポリウレタン発泡体を、ボックス発泡にて、作成した。
高さ３００ｍｍ×３７０ｍｍ×３７０ｍｍ角のボックスへ、厚み０．１ｍｍ×高さ３７０ｍｍ×３７０ｍｍ×３７０ｍｍのポリエチレン製フィルムをセットし、目標密度より、高さ３００ｍｍ×３７０ｍｍ×３７０ｍｍが得られる様、投入重量の計算をし、ポリオールを１００とした場合の配合比率合計より、投入量を割ることで、配合比率を計算した。
例えば、比較例１は、目標密度５５の為、規定の体積を得る為には、１６９１ｇの投入が必要となる。配合比率合計が、１０３の為、１３倍の配合比率として配合を作成した。計量器を用いて、３ＬのＰＰ容器に、イソシアネート以外を、計量投入し、１７２０ＲＰＭで連続回転するミキサーにて、２０秒プレミックスし、その後、イソシアネートを投入して、５秒ミキシングを、行い、速やかに、発泡用ボックスへ投入し、発泡形成を行った。
From the polyurethane foam composition (polyurethane foam raw material) containing the following raw materials as shown in FIG. 2, polyurethane foams for vehicle cushion pads of Examples and Comparative Examples were prepared by box foaming.
A polyethylene film with a thickness of 0.1 mm x height of 370 mm x 370 mm x 370 mm is set in a box with a height of 300 mm x 370 mm x 370 mm, and the input weight is such that a height of 300 mm x 370 mm x 370 mm can be obtained from the target density. Was calculated, and the blending ratio was calculated by dividing the input amount from the total blending ratio when the polyol was 100.
For example, in Comparative Example 1, since the target density is 55, it is necessary to add 1691 g in order to obtain a specified volume. Since the total compounding ratio is 103, the compounding was created with a compounding ratio of 13 times. Using a measuring instrument, weigh out other than isocyanate in a 3 L PP container, premix for 20 seconds with a mixer that rotates continuously at 1720 RPM, then add isocyanate and mix for 5 seconds. Immediately, it was put into a foaming box to form foam.
・ポリオール：ポリエーテルポリオール、分子量；３０００、官能基数；３、水酸基価；５６．１ｍｇＫＯＨ／ｇ、エチレンオキサイド含有率８％、品名；ＧＰ−３０５０ＮＳ、三洋化成工業社製
・添加剤１：アジピン酸ジイソノニル、重量平均分子量；４００、融点−６８℃、ＯＨ値；０、品名；ＤＩＮＡ、大八化学工業株式会社社製
・添加剤２：ダイマー酸ポリエステルポリオール、重量平均分子量；２５００、官能基数；３．３１、融点；−２０℃未満、ＯＨ値；７４．４、品名；Ｔ２４５８、日立化成ポリマー株式会社製
・添加剤３：グリース、凝固点；−１２．５℃、品名；ＦＰＬ−３２、ＭＯＲＥＳＣＯ社製
・添加剤４：ステアリン酸イソヘキサデシル、重量平均分子量；５０９、官能基数；０、融点；０℃以下、ＯＨ値；０、品名；ステアリン酸イソヘキサデシル、富士フイルムワコーケミカル社製
・添加剤５：ダイマー酸ジステアリル、重量平均分子量；９００、官能基数；０．１６、融点：２５℃、ＯＨ値；１０、ＩＮＯＡＣ社製
・添加剤６：ダイマー酸ジラウリル、重量平均分子量；８１５、官能基数；０．１５、融点：２３℃、ＯＨ値；１０、ＩＮＯＡＣ社製
・発泡剤：水
・アミン触媒：品名；ＤＡＢＣＯ３３ＬＳＩ、エアプロダクツジャパン社製
・整泡剤：シリコーン系整泡剤、品名；Ｔｅｇｏｓｔａｂ Ｂ８２３９、Ｅｖｏｎｉｋ社製
・錫触媒：オクチル酸スズ、品名；ＭＲＨ−１１０、城北化学工業（株）社製
・イソシアネート１：２，４−ＴＤＩと２，６−ＴＤＩが８０：２０の割合からなるＴＤＩ、品名；Ｔ−８０、日本ポリウレタン工業社製
・イソシアネート２：４−ＴＤＩと２，６−ＴＤＩが６７：３３の割合からなるＴＤＩ、品名；Ｔ−６７、日本ポリウレタン工業社製
＜ダイマー酸ジステアリルの合成方法＞
ダイマー酸１モルに、ステアリルアルコールを２モル添加する。触媒として、チタンテトライソプロポキシドを上記１００重量部に対して、０．１重量部を加え、１２０℃〜１８０℃で縮合水を流出させながら１６時間脱水エステル化反応を行った。残留するステアリルアルコールを加熱減圧により除去したのち、反応性生成物に活性白土を添加して１時間撹拌したのち、未反応物を濾過により除き、ダイマー酸ジステアリルを得た。
＜ダイマー酸ジラウリルの合成方法＞
ダイマー酸１モルに、ラウリルアルコールを２モル添加する。触媒として、チタンテトライソプロポキシドを上記１００重量部に対して、０．１重量部を加え、１２０℃〜１８０℃で縮合水を流出させながら１６時間脱水エステル化反応を行った。残留するラウリルアルコールを加熱減圧により除去したのち、反応性生成物に活性白土を添加して１時間撹拌したのち、未反応物を濾過により除き、ダイマー酸ジラウリルを得た。
-Polyol: polyether polyol, molecular weight; 3000, number of functional groups; 3, hydroxyl value: 56.1 mgKOH / g, ethylene oxide content 8%, product name: GP-3050NS, manufactured by Sanyo Kasei Kogyo Co., Ltd.-Additive 1: Adipic acid Diisononyl, weight average molecular weight; 400, melting point -68 ° C, OH value; 0, product name; DINA, manufactured by Daihachi Chemical Industry Co., Ltd.
-Additive 2: Polyester polyol dimerate, weight average molecular weight; 2500, number of functional groups: 3.31, melting point; less than -20 ° C, OH value: 74.4, product name: T2458, manufactured by Hitachi Chemical Polymer Co., Ltd.-Additives 3: Grease, freezing point; -12.5 ° C, product name; FPL-32, manufactured by MORESCO ・ Additive 4: Isohexadecyl stearate, weight average molecular weight; 509, number of functional groups: 0, melting point: 0 ° C or less, OH Value: 0, Product name: Isohexadecyl stearate, manufactured by Fujifilm Wako Chemical Co., Ltd. ・ Additive 5: distearyl dimerate, weight average molecular weight; 900, number of functional groups: 0.16, melting point: 25 ° C., OH value: 10 , INOAC ・ Additive 6: Dilauryl dimerate, Weight average molecular weight; 815, Number of functional groups: 0.15, Melting point: 23 ° C., OH value: 10, INOAC ・ Foaming agent: Water
・ Amin catalyst: product name; DABCO33LSI, manufactured by Air Products Japan Co., Ltd. ・ Foam stabilizer: silicone-based foam stabilizer, product name: Tegustab B8239, manufactured by Evonik ・ Tin catalyst: tin octylate, product name; MRH-110, Johoku Chemical Industry ( Manufactured by Co., Ltd. ・ TDI consisting of isocyanate 1: 2,4-TDI and 2,6-TDI in a ratio of 80:20, product name; T-80, manufactured by Nippon Polyurethane Industry Co., Ltd. ・ Isocyanate 2: 4-TDI and 2, TDI with a 6-TDI ratio of 67:33, product name; T-67, manufactured by Nippon Polyurethane Industry Co., Ltd. <Method for synthesizing distearyl diisocyanate>
To 1 mol of dimer acid, 2 mol of stearyl alcohol is added. As a catalyst, 0.1 part by weight of titanium tetraisopropoxide was added to 100 parts by weight of the above, and a dehydration esterification reaction was carried out for 16 hours while flowing out condensed water at 120 ° C. to 180 ° C. After removing the residual stearyl alcohol by heating and reducing pressure, activated clay was added to the reactive product and stirred for 1 hour, and then the unreacted product was removed by filtration to obtain distearyl dimerate.
<Synthesis method of dilauryl dimerate>
To 1 mol of dimer acid, 2 mol of lauryl alcohol is added. As a catalyst, 0.1 part by weight of titanium tetraisopropoxide was added to 100 parts by weight of the above, and a dehydration esterification reaction was carried out for 16 hours while flowing out condensed water at 120 ° C. to 180 ° C. After removing the residual lauryl alcohol by heating and reducing pressure, activated clay was added to the reactive product and stirred for 1 hour, and then the unreacted product was removed by filtration to obtain dilauryl dimerate.
実施例と比較例のポリウレタン発泡体について、密度、硬さ、反発弾性、通気量、振動試験の測定、及び発泡成型性を判断した。測定方法を以下に示す。また、測定結果を図２に示す。 For the polyurethane foams of Examples and Comparative Examples, the density, hardness, impact resilience, air flow rate, vibration test measurement, and foam moldability were judged. The measurement method is shown below. The measurement results are shown in FIG.
密度（ｋｇ／ｍ３）は、ＪＩＳ Ｋ ７２２２に準拠して測定した。
硬さ（Ｎ）は、ＪＩＳ Ｋ ６４００−２：２０１２ ６．７ Ｄ法に準拠し、２５０×２５０×５０ｍｍの測定用サンプルに対して測定した。
反発弾性（％）は、ＪＩＳ Ｋ ６４００−３：２０１１に準拠し、２５０×２５０×５０ｍｍの測定用サンプルに対して測定した。
通気量（ｃｃ／ｃｍ２／ｓ）は、ＪＩＳ Ｋ ６４００−７：２０１２に準拠し、２００×２００×１０ｍｍの測定用サンプルに対して測定した。
The density (kg / m 3 ) was measured according to JIS K 7222.
Hardness (N) was measured for a 250 × 250 × 50 mm measuring sample in accordance with JIS K 6400-2: 2012 6.7 D method.
The impact resilience (%) was measured with respect to a measurement sample of 250 × 250 × 50 mm according to JIS K 6400-3: 2011.
The air volume (cc / cm 2 / s) was measured for a 200 × 200 × 10 mm measurement sample in accordance with JIS K 6400-7: 2012.
振動試験は、ＪＡＳＯ Ｂ４０７に準拠し、２５０×２５０×５０ｍｍの測定用サンプルに対して、共振周波数（Ｈｚ）、共振倍率、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値を測定した。共振周波数（Ｈｚ）は伝達率がピーク時の周波数、共振倍率は、最も高い伝達率である。なお、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値は、シート上下振動時の不快に感じる振動周波数５〜１０Ｈｚの伝達率１以上を積分した値、すなわち合計値である。上下振動の不快を感じ始める５Ｈｚから積分し、１０Ｈｚを超えると、伝達率が１以下となるため、１０Ｈｚまでとした。５Ｈｚから１０Ｈｚまでの伝達率１以上の積分値を求めることで、人体に与える不快度を数値化できる。
発泡成型性は、ポリウレタン発泡体が不具合なく良好に成型できた場合に「◎」とし、シュリンクやパンクなどの発泡不良があった場合に「×」とした。
The vibration test was based on JASO B407, and the integral value of the resonance frequency (Hz), the resonance magnification, and the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was measured for the measurement sample of 250 × 250 × 50 mm. The resonance frequency (Hz) is the frequency at which the transmission coefficient is at its peak, and the resonance magnification is the highest transmission coefficient. The integrated value of the transmission rate of 1 or more at the vibration frequency of 5 to 10 Hz is the integrated value of the transmission rate of 1 or more of the vibration frequency of 5 to 10 Hz, which is unpleasant when the seat is vibrated up and down, that is, the total value. Integrating from 5 Hz, where the discomfort of vertical vibration begins to be felt, and exceeding 10 Hz, the transmissibility becomes 1 or less, so the frequency was set to 10 Hz. By obtaining an integral value having a transmission coefficient of 1 or more from 5 Hz to 10 Hz, the degree of discomfort given to the human body can be quantified.
The foam moldability was rated as "⊚" when the polyurethane foam could be molded satisfactorily without any problems, and as "x" when there was poor foaming such as shrinkage or puncture.
各実施例及び各比較例の構成及び測定結果について説明する。
・実施例１
実施例１は、ポリオールを１００重量部、添加剤５（ダイマー酸ジステアリル、ＩＮＯＡＣ社製）を１０重量部、発泡剤（水）を１．８５重量部、アミン触媒を０．２５重量部、整泡剤を０．２７重量部、錫触媒を０．２９６重量部、イソシアネート１（Ｔ−８０）を８．３重量部、イソシアネート２（Ｔ−６７）を１８．７重量部、イソシアネートインデックスを１０５とした例である。
The configuration and measurement results of each Example and each Comparative Example will be described.
・ Example 1
In Example 1, 100 parts by weight of the polyol, 10 parts by weight of the additive 5 (distealyl dimerate, manufactured by INOAC), 1.85 parts by weight of the foaming agent (water), and 0.25 parts by weight of the amine catalyst. 0.27 parts by weight of foam stabilizer, 0.296 parts by weight of tin catalyst, 8.3 parts by weight of isocyanate 1 (T-80), 18.7 parts by weight of isocyanate 2 (T-67), isocyanate index. This is an example of 105.
実施例１のポリウレタン発泡体は、密度が５５．５ｋｇ／ｍ３、硬さが１４６Ｎ、反発弾性が５２．３％、通気量が９０ｃｃ／ｃｍ２／ｓ、共振周波数が４．００Ｈｚ、共振倍率が３．０５、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が８６６、発泡成型性「◎」であった。 The polyurethane foam of Example 1 has a density of 55.5 kg / m 3 , a hardness of 146 N, a rebound resilience of 52.3%, an air flow rate of 90 cc / cm 2 / s, a resonance frequency of 4.00 Hz, and a resonance magnification. Was 3.05, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 866, and the foam moldability was “⊚”.
実施例１のポリウレタン発泡体は、通気量が６ｃｃ／ｃｍ２／ｓ以上で、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満の範囲にあり、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲にあるため、車両走行時の振動に対する不快感が小さく、座り心地が良好である。また、硬さが８０〜２５０Ｎの範囲にあるため、着座時の底付きを抑え、座り心地を良好にできる。 The polyurethane foam of Example 1 has a ventilation rate of 6 cc / cm 2 / s or more, a resonance magnification of a vibration test by JASO B407 in the range of 1.5 to less than 3.43, and transmission at a vibration frequency of 5-10 Hz. Since the integrated value having a rate of 1 or more is in the range of 500 to less than 915, the discomfort to vibration during vehicle running is small, and the sitting comfort is good. Further, since the hardness is in the range of 80 to 250 N, bottoming out at the time of sitting can be suppressed and the sitting comfort can be improved.
・実施例２
実施例２は、実施例１における添加剤５（ダイマー酸ジステアリル、ＩＮＯＡＣ社製）に代えて添加剤２（ダイマー酸ポリエステルポリオール、品名；Ｔ２４５８）を１０重量部添加した以外、実施例１と同様の例である。
実施例２のポリウレタン発泡体は、密度が５３．６ｋｇ／ｍ３、硬さが１８０Ｎ、反発弾性が４４．４％、通気量が１１６．７ｃｃ／ｃｍ２／ｓ、共振周波数が５．００Ｈｚ、共振倍率が２．０４、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が７４９、発泡成型性「◎」であった。
-Example 2
Example 2 is the same as that of Example 1 except that 10 parts by weight of Additive 2 (polyester dimerate polyol, product name; T2458) was added in place of the additive 5 (distearyl dimerate, manufactured by INOAC) in Example 1. It is a similar example.
The polyurethane foam of Example 2 has a density of 53.6 kg / m 3 , a hardness of 180 N, a rebound resilience of 44.4%, an air flow rate of 116.7 cc / cm 2 / s, and a resonance frequency of 5.00 Hz. The resonance magnification was 2.04, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 749, and the foam moldability was “⊚”.
実施例２のポリウレタン発泡体は、通気量が６ｃｃ／ｃｍ２／ｓ以上で、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満の範囲にあり、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲にあるため、車両走行時の振動に対する不快感が小さく、座り心地が良好である。また、硬さが８０〜２５０Ｎの範囲にあるため、着座時の底付きを抑え、座り心地を良好にできる。 The polyurethane foam of Example 2 has a ventilation rate of 6 cc / cm 2 / s or more, a resonance magnification of a vibration test by JASO B407 in the range of 1.5 to less than 3.43, and transmission at a vibration frequency of 5-10 Hz. Since the integrated value having a rate of 1 or more is in the range of 500 to less than 915, the discomfort to vibration during vehicle running is small, and the sitting comfort is good. Further, since the hardness is in the range of 80 to 250 N, bottoming out at the time of sitting can be suppressed and the sitting comfort can be improved.
・実施例３
実施例３は、実施例２における添加剤２（ダイマー酸ポリエステルポリオール、品名；Ｔ２４５８）を２０重量部にした以外、実施例２と同様の例である。
実施例３のポリウレタン発泡体は、密度が５８．７ｋｇ／ｍ３、硬さが１７４Ｎ、反発弾性が３７．５％、通気量が１２３．７ｃｃ／ｃｍ２／ｓ、共振周波数が４．９３Ｈｚ、共振倍率が１．７５、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が８６９、発泡成型性「◎」であった。
・ Example 3
Example 3 is the same example as in Example 2 except that the additive 2 (polyester polyol dimerate, product name; T2458) in Example 2 is 20 parts by weight.
The polyurethane foam of Example 3 has a density of 58.7 kg / m 3 , a hardness of 174 N, a rebound resilience of 37.5%, an air flow rate of 123.7 cc / cm 2 / s, and a resonance frequency of 4.93 Hz. The resonance magnification was 1.75, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 869, and the foam moldability was “⊚”.
実施例３のポリウレタン発泡体は、通気量が６ｃｃ／ｃｍ２／ｓ以上で、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満の範囲にあり、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲にあるため、車両走行時の振動に対する不快感が小さく、座り心地が良好である。また、硬さが８０〜２５０Ｎの範囲にあるため、着座時の底付きを抑え、座り心地を良好にできる。 The polyurethane foam of Example 3 has a ventilation rate of 6 cc / cm 2 / s or more, a resonance magnification of a vibration test by JASO B407 in the range of 1.5 to less than 3.43, and transmission at a vibration frequency of 5-10 Hz. Since the integrated value having a rate of 1 or more is in the range of 500 to less than 915, the discomfort to vibration during vehicle running is small, and the sitting comfort is good. Further, since the hardness is in the range of 80 to 250 N, bottoming out at the time of sitting can be suppressed and the sitting comfort can be improved.
・実施例４
実施例４は、実施例１における添加剤５（ダイマー酸ジステアリル、ＩＮＯＡＣ社製）を１００重量部にした以外、実施例１と同様の例である。
実施例４のポリウレタン発泡体は、密度が１０８．１ｋｇ／ｍ３、硬さが９２Ｎ、反発弾性が２９％、通気量が１０．２ｃｃ／ｃｍ２／ｓ、共振周波数が５．６６Ｈｚ、共振倍率が１．７６、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５０７、発泡成型性「◎」であった。
・ Example 4
Example 4 is the same example as in Example 1 except that the additive 5 (distearyl dimer acid, manufactured by INOAC) in Example 1 is made up to 100 parts by weight.
The polyurethane foam of Example 4 has a density of 108.1 kg / m 3 , a hardness of 92 N, a rebound resilience of 29%, a ventilation rate of 10.2 cc / cm 2 / s, a resonance frequency of 5.66 Hz, and a resonance magnification. Was 1.76, the integrated value with a transmission rate of 1 or more at a vibration frequency of 5-10 Hz was 507, and the foam moldability was “⊚”.
実施例４のポリウレタン発泡体は、通気量が６ｃ／ｃｍ２／ｓ以上で、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満の範囲にあり、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲にあるため、車両走行時の振動に対する不快感が小さく、座り心地が良好である。また、硬さが８０〜２５０Ｎの範囲にあるため、着座時の底付きを抑え、座り心地を良好にできる。 The polyurethane foam of Example 4 has a ventilation rate of 6 c / cm 2 / s or more, a resonance magnification of a vibration test by JASO B407 in the range of 1.5 to less than 3.43, and transmission at a vibration frequency of 5-10 Hz. Since the integrated value having a rate of 1 or more is in the range of 500 to less than 915, the discomfort to vibration during vehicle running is small, and the sitting comfort is good. Further, since the hardness is in the range of 80 to 250 N, bottoming out at the time of sitting can be suppressed and the sitting comfort can be improved.
・実施例５
実施例５は、実施例１における添加剤５（ダイマー酸ジステアリル、ＩＮＯＡＣ社製）に代えて添加剤６（ダイマー酸ジラウリル、ＩＮＯＡＣ社製）を１０重量部にした以外、実施例１と同様の例である。
実施例５のポリウレタン発泡体は、密度が５４．３ｋｇ／ｍ３、硬さが１４３Ｎ、反発弾性が５３．２％、通気量が９２．１ｃｃ／ｃｍ２／ｓ、共振周波数が４．１２Ｈｚ、共振倍率が２．９８、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が８５５、発泡成型性「◎」であった。
・ Example 5
Example 5 is the same as Example 1 except that the additive 6 (dilauryl dimerate, manufactured by INOAC) is replaced with the additive 5 (distearyl dimer acid, manufactured by INOAC) in Example 1 in an amount of 10 parts by weight. Is an example of.
The polyurethane foam of Example 5 has a density of 54.3 kg / m 3 , a hardness of 143 N, a rebound resilience of 53.2%, a ventilation rate of 92.1 cc / cm 2 / s, and a resonance frequency of 4.12 Hz. The resonance magnification was 2.98, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 855, and the foam moldability was “⊚”.
実施例５のポリウレタン発泡体は、通気量が６ｃｃ／ｃｍ２／ｓ以上で、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満の範囲にあり、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲にあるため、車両走行時の振動に対する不快感が小さく、座り心地が良好である。また、硬さが８０〜２５０Ｎの範囲にあるため、着座時の底付きを抑え、座り心地を良好にできる。 The polyurethane foam of Example 5 has a ventilation rate of 6 cc / cm 2 / s or more, a resonance magnification of a vibration test by JASO B407 in the range of 1.5 to less than 3.43, and transmission at a vibration frequency of 5-10 Hz. Since the integrated value having a rate of 1 or more is in the range of 500 to less than 915, the discomfort to vibration during vehicle running is small, and the sitting comfort is good. Further, since the hardness is in the range of 80 to 250 N, bottoming out at the time of sitting can be suppressed and the sitting comfort can be improved.
・比較例１
比較例１は、添加剤１−５の何れも含まず、イソシアネートインデックスを１００にした例であり、その他は実施例１−４と同様である。
比較例１のポリウレタン発泡体は、密度が５０．３ｋｇ／ｍ３、硬さが１４４Ｎ、反発弾性が５３．７％、通気量が１１８ｃｃ／ｃｍ２／ｓ、共振周波数が３．９６Ｈｚ、共振倍率が３．４３、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が９１５、発泡成型性「◎」であった。
・ Comparative example 1
Comparative Example 1 is an example in which none of the additives 1-5 is contained and the isocyanate index is set to 100, and the others are the same as in Examples 1-4.
The polyurethane foam of Comparative Example 1 has a density of 50.3 kg / m 3 , a hardness of 144 N, a rebound resilience of 53.7%, an air flow rate of 118 cc / cm 2 / s, a resonance frequency of 3.96 Hz, and a resonance magnification. Was 3.43, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 915, and the foam moldability was “⊚”.
比較例１のポリウレタン発泡体は、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満の範囲を超え、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲を超えるものであるため、振動に対する不快感が大きく、良好な座り心地が得られない。 The polyurethane foam of Comparative Example 1 has a resonance magnification of less than 1.5 to 3.43 in a vibration test by JASO B407, and an integral value of a transmission rate of 1 or more at a vibration frequency of 5-10 Hz is less than 500 to 915. Since it exceeds the range, there is a great deal of discomfort due to vibration, and it is not possible to obtain a good sitting comfort.
・比較例２
比較例２は、添加剤１（アジピン酸ジイソノニル、品名；ＤＩＮＡ）を１０重量部添加し、その他を比較例１と同様にした例である。
比較例２のポリウレタン発泡体は、密度が５７．４ｋｇ／ｍ３、硬さが１２０Ｎ、反発弾性が５５．６％、通気量が９０．８ｃｃ／ｃｍ２／ｓ、共振周波数が４．６５Ｈｚ、共振倍率が３．５３、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が９６４、発泡成型性「◎」であった。
・ Comparative example 2
Comparative Example 2 is an example in which 10 parts by weight of Additive 1 (diisononyl adipate, product name; DINA) was added, and the others were the same as in Comparative Example 1.
The polyurethane foam of Comparative Example 2 has a density of 57.4 kg / m 3 , a hardness of 120 N, a rebound resilience of 55.6%, an air flow rate of 90.8 cc / cm 2 / s, and a resonance frequency of 4.65 Hz. The resonance magnification was 3.53, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 964, and the foam moldability was “⊚”.
比較例２のポリウレタン発泡体は、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満の範囲を超え、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲を超えるものであるため、振動に対する不快感が大きく、良好な座り心地が得られない。 The polyurethane foam of Comparative Example 2 has a resonance magnification of less than 1.5 to 3.43 in a vibration test by JASO B407, and an integral value of a transmission rate of 1 or more at a vibration frequency of 5-10 Hz is less than 500 to 915. Since it exceeds the range, there is a great deal of discomfort due to vibration, and it is not possible to obtain a good sitting comfort.
・比較例３
比較例３は、添加剤１（アジピン酸ジイソノニル、品名；ＤＩＮＡ）を２０重量部添加し、イソシアネートインデックスを１０５にした以外は、比較例２と同様である。
比較例３のポリウレタン発泡体は、密度が７０．７ｋｇ／ｍ３、硬さが１２７Ｎ、反発弾性が５３．６％、通気量が３５ｃｃ／ｃｍ２／ｓ、共振周波数が５．１０Ｈｚ、共振倍率が３．２２、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が９９１、発泡成型性「◎」であった。
・ Comparative example 3
Comparative Example 3 is the same as Comparative Example 2 except that the additive 1 (diisononyl adipate, product name; DINA) was added in an amount of 20 parts by weight to set the isocyanate index to 105.
The polyurethane foam of Comparative Example 3 has a density of 70.7 kg / m 3 , a hardness of 127 N, a rebound resilience of 53.6%, a ventilation rate of 35 cc / cm 2 / s, a resonance frequency of 5.10 Hz, and a resonance magnification. Was 3.22, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 991, and the foam moldability was “⊚”.
比較例３のポリウレタン発泡体は、ＪＡＳＯ Ｂ４０７による振動試験の振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲を超えるものであるため、振動に対する不快感が大きく、良好な座り心地が得られない。 Since the polyurethane foam of Comparative Example 3 has an integral value of a transmission rate of 1 or more at a vibration frequency of 5-10 Hz in a vibration test by JASO B407 exceeding the range of 500 to less than 915, it is highly uncomfortable with vibration and is good. I can't get a comfortable seat.
・比較例４
比較例４は、添加剤３（グリース、品名；ＦＰＬ−３２）を１０重量部添加した以外は、比較例１と同様である。
比較例４のポリウレタン発泡体は、密度が５２．９ｋｇ／ｍ３、硬さが１１７Ｎ、反発弾性が２５．５％、通気量が３．２ｃｃ／ｃｍ２／ｓ、共振周波数が８．６９Ｈｚ、共振倍率が２．３２、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が１０７２、発泡成型性「◎」であった。
・ Comparative example 4
Comparative Example 4 is the same as Comparative Example 1 except that the additive 3 (grease, product name; FPL-32) is added in an amount of 10 parts by weight.
The polyurethane foam of Comparative Example 4 has a density of 52.9 kg / m 3 , a hardness of 117 N, a rebound resilience of 25.5%, an air flow rate of 3.2 cc / cm 2 / s, and a resonance frequency of 8.69 Hz. The resonance magnification was 2.32, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 1072, and the foam moldability was “⊚”.
比較例４のポリウレタン発泡体は、ＪＡＳＯ Ｂ４０７による振動試験の振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲を超えるものであるため、振動に対する不快感が大きく、良好な座り心地が得られない。 Since the polyurethane foam of Comparative Example 4 has an integral value of a transmission rate of 1 or more at a vibration frequency of 5-10 Hz in a vibration test by JASO B407 exceeding the range of 500 to less than 915, it is highly uncomfortable with vibration and is good. I can't get a comfortable seat.
・比較例５
比較例５は、添加剤３（グリース、品名；ＦＰＬ−３２）を２０重量部添加した以外は、比較例４と同様である。
比較例５のポリウレタン発泡体は、密度が５４．２ｋｇ／ｍ３、硬さが１０９Ｎ、反発弾性が４３％、通気量が０．１ｃｃ／ｃｍ２／ｓ、共振周波数が９．０７Ｈｚ、共振倍率が２．４８、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が１０６５、発泡成型性「◎」であった。
・ Comparative example 5
Comparative Example 5 is the same as Comparative Example 4 except that the additive 3 (grease, product name; FPL-32) is added by 20 parts by weight.
The polyurethane foam of Comparative Example 5 has a density of 54.2 kg / m 3 , a hardness of 109 N, a rebound resilience of 43%, an air flow rate of 0.1 cc / cm 2 / s, a resonance frequency of 9.07 Hz, and a resonance magnification. Was 2.48, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 1065, and the foam moldability was “⊚”.
比較例５のポリウレタン発泡体は、ＪＡＳＯ Ｂ４０７による振動試験の振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が５００〜９１５未満の範囲を超えるものであるため、振動に対する不快感が大きく、良好な座り心地が得られない。 Since the polyurethane foam of Comparative Example 5 has an integral value of a transmission rate of 1 or more at a vibration frequency of 5-10 Hz in a vibration test by JASO B407 exceeding the range of 500 to less than 915, it is highly uncomfortable with vibration and is good. I can't get a comfortable seat.
・比較例６
比較例６は、添加剤４（ステアリン酸イソヘキサデシル、富士フイルムワコーケミカル社製）を１０重量部添加した以外は、比較例１と同様である。
比較例６のポリウレタン発泡体は、密度が５９．６ｋｇ／ｍ３、硬さが１２８Ｎ、反発弾性が５５％、通気量が１３７ｃｃ／ｃｍ２／ｓ、共振周波数が４．０Ｈｚ、共振倍率が３．８、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が６２３、発泡成型性「◎」であった。
・ Comparative example 6
Comparative Example 6 is the same as Comparative Example 1 except that the additive 4 (isohexadecyl stearate, manufactured by FUJIFILM Wako Chemical Co., Ltd.) was added in an amount of 10 parts by weight.
The polyurethane foam of Comparative Example 6 has a density of 59.6 kg / m 3 , a hardness of 128 N, a rebound resilience of 55%, an air flow rate of 137 cc / cm 2 / s, a resonance frequency of 4.0 Hz, and a resonance magnification of 3. 8.8, the integrated value of the transmission rate of 1 or more at the vibration frequency of 5-10 Hz was 623, and the foam moldability was “⊚”.
比較例６のポリウレタン発泡体は、ＪＡＳＯ Ｂ４０７による振動試験の共振倍率が１．５〜３．４３未満の範囲を超えるため、振動に対する不快感が大きく、良好な座り心地が得られない。 In the polyurethane foam of Comparative Example 6, since the resonance magnification of the vibration test by JASO B407 exceeds the range of 1.5 to less than 3.43, the discomfort to vibration is large and a good sitting comfort cannot be obtained.
・比較例７
比較例７は、添加剤４（品名；ステアリン酸イソヘキサデシル、富士フイルムワコーケミカル社製）を２０重量部添加した以外は、比較例６と同様である。
比較例６のポリウレタン発泡体は、密度が７４．３ｋｇ／ｍ３、硬さが１１０Ｎ、反発弾性が５４％、通気量が１４．５ｃｃ／ｃｍ２／ｓ、共振周波数が４．９Ｈｚ、共振倍率が３．１、振動周波数５−１０Ｈｚにおける伝達率１以上の積分値が７８５．１、発泡成型性「×」であった。
比較例７のポリウレタン発泡体は、発泡状態がパンク状態となり、クッションパッドとして使用可能な良好な発泡体が得られなかった。
-Comparative example 7
Comparative Example 7 is the same as Comparative Example 6 except that the additive 4 (product name; isohexadecyl stearate, manufactured by FUJIFILM Wako Chemical Co., Ltd.) was added in an amount of 20 parts by weight.
The polyurethane foam of Comparative Example 6 has a density of 74.3 kg / m 3 , a hardness of 110 N, a rebound resilience of 54%, a ventilation rate of 14.5 cc / cm 2 / s, a resonance frequency of 4.9 Hz, and a resonance magnification. The integrated value of a transmission rate of 1 or more at a vibration frequency of 5-10 Hz was 785.1, and the foam moldability was “x”.
The polyurethane foam of Comparative Example 7 was in a punctured state, and a good foam that could be used as a cushion pad could not be obtained.
このように、本発明の車両用クッションパッド及び車両用シートクッションは、車両走行時の振動による不快感を低減させることができ、良好な座り心地が得られる。 As described above, the vehicle cushion pad and the vehicle seat cushion of the present invention can reduce the discomfort caused by the vibration during the vehicle running, and provide a good sitting comfort.
１０ 車両用シート
１１ シートフレーム
２１ クッション本体
３１ クッションパッド
３５ 表皮材
４０ 車両用シートクッション
10 Vehicle seat 11 Seat frame 21 Cushion body 31 Cushion pad 35
Claims (5)
前記ポリウレタン発泡体は、ポリオール、イソシアネート、触媒、発泡剤、添加剤を含むポリウレタン発泡体組成物で形成され、
前記添加剤は、重量平均分子量が５００〜５０００のジカルボン酸エステル化合物であり、
前記ポリウレタン発泡体におけるＪＩＳ Ｋ ６４００−７：２０１２に準じた通気量が、６．０ｃｃ／ｃｍ２／ｓ以上であることを特徴とする車両用クッションパッド。 In a vehicle cushion pad made of polyurethane foam,
The polyurethane foam is formed of a polyurethane foam composition containing a polyol, an isocyanate, a catalyst, a foaming agent, and an additive.
The additive is a dicarboxylic acid ester compound having a weight average molecular weight of 500 to 5000.
A cushion pad for a vehicle, characterized in that the air volume of the polyurethane foam according to JIS K 6400-7: 2012 is 6.0 cc / cm 2 / s or more.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/210,750 US20210301068A1 (en) | 2020-03-27 | 2021-03-24 | Vehicle cushion pad and vehicle seat cushion |
| CN202110324173.9A CN113444217A (en) | 2020-03-27 | 2021-03-26 | Cushion pad for vehicle and seat pad for vehicle |
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| JP2020057489 | 2020-03-27 | ||
| JP2020057489 | 2020-03-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021161332A (en) * | 2020-04-02 | 2021-10-11 | 株式会社イノアックコーポレーション | Vehicle cushion pad and vehicle seat cushion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021161332A (en) * | 2020-04-02 | 2021-10-11 | 株式会社イノアックコーポレーション | Vehicle cushion pad and vehicle seat cushion |
| JP7464427B2 (en) | 2020-04-02 | 2024-04-09 | 株式会社イノアックコーポレーション | Vehicle cushion pad and vehicle seat cushion |
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