JP7635552B2 - 自動車冷却部品用ポリフェニレンスルフィド樹脂組成物および自動車冷却部品 - Google Patents
自動車冷却部品用ポリフェニレンスルフィド樹脂組成物および自動車冷却部品 Download PDFInfo
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- JP7635552B2 JP7635552B2 JP2020566302A JP2020566302A JP7635552B2 JP 7635552 B2 JP7635552 B2 JP 7635552B2 JP 2020566302 A JP2020566302 A JP 2020566302A JP 2020566302 A JP2020566302 A JP 2020566302A JP 7635552 B2 JP7635552 B2 JP 7635552B2
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- JP
- Japan
- Prior art keywords
- pps resin
- resin composition
- polyphenylene sulfide
- sulfide resin
- weight
- 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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- 239000004734 Polyphenylene sulfide Substances 0.000 title claims description 213
- 229920000069 polyphenylene sulfide Polymers 0.000 title claims description 213
- 239000011342 resin composition Substances 0.000 title claims description 59
- 238000001816 cooling Methods 0.000 title claims description 38
- 229920005989 resin Polymers 0.000 claims description 150
- 239000011347 resin Substances 0.000 claims description 150
- 238000000034 method Methods 0.000 claims description 69
- -1 silane compound Chemical class 0.000 claims description 63
- 230000002528 anti-freeze Effects 0.000 claims description 45
- 238000012360 testing method Methods 0.000 claims description 22
- 239000003365 glass fiber Substances 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 20
- 238000001746 injection moulding Methods 0.000 claims description 15
- 229910000077 silane Inorganic materials 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 12
- 238000002425 crystallisation Methods 0.000 claims description 9
- 230000008025 crystallization Effects 0.000 claims description 9
- 125000000524 functional group Chemical group 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 9
- JTPNRXUCIXHOKM-UHFFFAOYSA-N 1-chloronaphthalene Chemical compound C1=CC=C2C(Cl)=CC=CC2=C1 JTPNRXUCIXHOKM-UHFFFAOYSA-N 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 4
- REEBJQTUIJTGAL-UHFFFAOYSA-N 3-pyridin-1-ium-1-ylpropane-1-sulfonate Chemical compound [O-]S(=O)(=O)CCC[N+]1=CC=CC=C1 REEBJQTUIJTGAL-UHFFFAOYSA-N 0.000 description 185
- 101710143285 4-phosphopantoate-beta-alanine ligase Proteins 0.000 description 184
- 102100024368 Inositol polyphosphate 5-phosphatase K Human genes 0.000 description 184
- 208000002387 Popliteal pterygium syndrome Diseases 0.000 description 184
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 99
- 238000006116 polymerization reaction Methods 0.000 description 70
- 238000010438 heat treatment Methods 0.000 description 56
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 54
- 238000011282 treatment Methods 0.000 description 37
- 239000007789 gas Substances 0.000 description 33
- 229910052751 metal Inorganic materials 0.000 description 32
- 239000002184 metal Substances 0.000 description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 26
- 239000000203 mixture Substances 0.000 description 26
- 229920001577 copolymer Polymers 0.000 description 25
- 239000003795 chemical substances by application Substances 0.000 description 24
- 238000010306 acid treatment Methods 0.000 description 20
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 18
- 239000005977 Ethylene Substances 0.000 description 18
- 239000002253 acid Substances 0.000 description 18
- 229920000642 polymer Polymers 0.000 description 18
- 150000001875 compounds Chemical class 0.000 description 17
- 239000000835 fiber Substances 0.000 description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- 150000001491 aromatic compounds Chemical class 0.000 description 15
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 14
- 229910052977 alkali metal sulfide Inorganic materials 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 238000004140 cleaning Methods 0.000 description 14
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- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 12
- 229910052783 alkali metal Inorganic materials 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 239000003960 organic solvent Substances 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 12
- 239000003381 stabilizer Substances 0.000 description 12
- 150000007942 carboxylates Chemical class 0.000 description 11
- 239000012948 isocyanate Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000003708 ampul Substances 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 10
- 239000003484 crystal nucleating agent Substances 0.000 description 10
- 238000011084 recovery Methods 0.000 description 10
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- 239000012298 atmosphere Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 8
- 239000011256 inorganic filler Substances 0.000 description 8
- 229910003475 inorganic filler Inorganic materials 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 230000001590 oxidative effect Effects 0.000 description 8
- 239000002798 polar solvent Substances 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000011260 aqueous acid Substances 0.000 description 6
- 125000003700 epoxy group Chemical group 0.000 description 6
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 6
- 239000011261 inert gas Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical compound SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 description 6
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 239000002216 antistatic agent Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- 239000001632 sodium acetate Substances 0.000 description 5
- 235000017281 sodium acetate Nutrition 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000004696 Poly ether ether ketone Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical class C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- UTOPWMOLSKOLTQ-UHFFFAOYSA-N octacosanoic acid Chemical class CCCCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O UTOPWMOLSKOLTQ-UHFFFAOYSA-N 0.000 description 4
- 229920002530 polyetherether ketone Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000011085 pressure filtration Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- HHVIBTZHLRERCL-UHFFFAOYSA-N sulfonyldimethane Chemical compound CS(C)(=O)=O HHVIBTZHLRERCL-UHFFFAOYSA-N 0.000 description 4
- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical compound ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 3
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 239000004593 Epoxy Chemical class 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
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- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 3
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- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
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- 239000004793 Polystyrene Substances 0.000 description 2
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- GNOIPBMMFNIUFM-UHFFFAOYSA-N hexamethylphosphoric triamide Chemical compound CN(C)P(=O)(N(C)C)N(C)C GNOIPBMMFNIUFM-UHFFFAOYSA-N 0.000 description 2
- 150000004677 hydrates Chemical class 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
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- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
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Description
(A)ポリフェニレンスルフィド樹脂100重量部に対し、(B)ガラス繊維を30~110重量部、ならびに(C)官能基としてイソシアネート基を有するシラン化合物を0.1~3重量部を配合してなるポリフェニレンスルフィド樹脂組成物であって、前記(A)ポリフェニレンスルフィド樹脂の数平均分子量が、7,000~14,000であって、前記(A)ポリフェニレンスルフィド樹脂の250℃で5分間、20倍重量の1-クロロナフタレンに溶解してポアサイズ1μmのPTFEメンブランフィルターで熱時加圧濾過した際の残さ量が2.0~5.0重量%である自動車冷却部品用ポリフェニレンスルフィド樹脂組成物、である。
上記ポリフェニレンスルフィド樹脂組成物からなる自動車冷却部品、である。
(i)ポリフェニレンスルフィド樹脂組成物を射出成形してなるISO 20753に規定されるタイプA1試験片(以下、ISO試験片と呼ぶ。)を用い、引張速度5mm/min、雰囲気温度23℃の条件で、ISO 527-1、-2法に準拠し、測定した引張強度が190MPa以上
(ii)前記ISO試験片を用い、150℃の不凍液に500時間浸漬処理した後、引張速度5mm/min、雰囲気温度23℃の条件で、ISO 527-1、-2法に準拠し、測定した引張強度の保持率が80%以上。
ポリハロゲン化芳香族化合物とは、1分子中にハロゲン原子を2個以上有する化合物をいう。具体例としては、p-ジクロロベンゼン、m-ジクロロベンゼン、o-ジクロロベンゼン、1,3,5-トリクロロベンゼン、1,2,4-トリクロロベンゼン、1,2,4,5-テトラクロロベンゼン、ヘキサクロロベンゼン、2,5-ジクロロトルエン、2,5-ジクロロ-p-キシレン、1,4-ジブロモベンゼン、1,4-ジヨードベンゼン、1-メトキシ-2,5-ジクロロベンゼンなどのポリハロゲン化芳香族化合物が挙げられ、好ましくはp-ジクロロベンゼンが用いられる。また、異なる2種以上のポリハロゲン化芳香族化合物を組み合わせて共重合体とすることも可能であるが、p-ジハロゲン化芳香族化合物を主要成分とすることが好ましい。
スルフィド化剤としては、アルカリ金属硫化物、アルカリ金属水硫化物、および硫化水素が挙げられる。
重合溶媒としては有機極性溶媒を用いることが好ましい。具体例としては、N-メチル-2-ピロリドン、N-エチル-2-ピロリドンなどのN-アルキルピロリドン類、N-メチル-ε-カプロラクタムなどのカプロラクタム類、1,3-ジメチル-2-イミダゾリジノン、N,N-ジメチルアセトアミド、N,N-ジメチルホルムアミド、ヘキサメチルリン酸トリアミド、ジメチルスルホン、テトラメチレンスルホキシドなどに代表されるアプロチック有機溶媒、およびこれらの混合物などが挙げられ、これらはいずれも反応の安定性が高いために好ましく使用される。これらのなかでも、特にN-メチル-2-ピロリドン(以下、NMPと略記することもある)が好ましく用いられる。
生成するPPS樹脂の末端を形成させるか、あるいは重合反応や分子量を調節するなどのために、モノハロゲン化化合物(必ずしも芳香族化合物でなくともよい)を、上記ポリハロゲン化芳香族化合物と併用することができる。
比較的高重合度のPPS樹脂をより短時間で得るために重合助剤を用いることも好ましい態様の一つである。ここで重合助剤とは得られるPPS樹脂の粘度を増大させる作用を有する物質を意味する。このような重合助剤の具体例としては、例えば、有機カルボン酸金属塩、水、アルカリ金属塩化物、有機スルホン酸塩、硫酸アルカリ金属塩、アルカリ土類金属酸化物、アルカリ金属リン酸塩およびアルカリ土類金属リン酸塩などが挙げられる。これらは単独であっても、また2種以上を同時に用いることもできる。なかでも、有機カルボン酸金属塩および/または水が好ましく用いられる。
重合反応系を安定化し、副反応を防止するために、重合安定剤を用いることもできる。重合安定剤は、重合反応系の安定化に寄与し、望ましくない副反応を抑制する。副反応の一つの目安としては、チオフェノールの生成が挙げられ、重合安定剤の添加によりチオフェノールの生成を抑えることができる。重合安定剤の具体例としては、アルカリ金属水酸化物、アルカリ金属炭酸塩、アルカリ土類金属水酸化物、およびアルカリ土類金属炭酸塩などの化合物が挙げられる。そのなかでも、水酸化ナトリウム、水酸化カリウム、および水酸化リチウムなどのアルカリ金属水酸化物が好ましい。上述の有機カルボン酸金属塩も重合安定剤として作用するので、本発明で使用する重合安定剤の一つに入る。また、スルフィド化剤としてアルカリ金属水硫化物を用いる場合には、アルカリ金属水酸化物を同時に使用することが特に好ましいことを前述したが、ここでスルフィド化剤に対して過剰となるアルカリ金属水酸化物も重合安定剤となり得る。
スルフィド化剤は通常水和物の形で使用されるが、ポリハロゲン化芳香族化合物を添加する前に、有機極性溶媒とスルフィド化剤を含む混合物を昇温し、過剰量の水を系外に除去することが好ましい。なお、この操作により水を除去し過ぎた場合には、不足分の水を添加して補充することが好ましい。
有機極性溶媒中でスルフィド化剤とポリハロゲン化芳香族化合物とを200~290℃の温度範囲内で反応させることによりPPS樹脂を製造することが好ましい。
重合終了後に、重合体、溶媒などを含む重合反応物から固形物を回収する。
本発明では、PPS樹脂として、たとえば上記重合反応工程、回収工程を経て得られたPPS樹脂を酸処理することが重要である。
本発明では、上記後処理工程を経た後のPPS樹脂にさらに加熱処理を行うことで、機械的強度が高く、かつ耐不凍液性に優れたPPS樹脂が得られるため好ましい。以下に加熱処理工程を具体的に説明する。
ハウジングに内包されたバルブの開閉は、エンジンの駆動力を利用しても、モーターの駆動力を利用してもよい。
(1)残さ量
空圧キャップと採集ロートを具備したセンシュー科学製のSUS試験管に、予め秤量しておいたポアサイズ1μmのPTFEメンブランフィルターをセットし、約80μm厚にプレスフィルム化したPPS樹脂100mgおよび1-クロロナフタレン2gを計り入れてから密閉した。これをセンシュー科学製の高温濾過装置SSC-9300に挿入し、250℃で5分間加熱振とうしてPPS樹脂を1-クロロナフタレンに溶解した。空気を含んだ20mLの注射器を空圧キャップに接続した後、ピストンを押出して溶液をメンブランフィルターで濾過した。メンブランフィルターを取り出し、150℃で1時間真空乾燥してから秤量した。濾過前のメンブランフィルターの重量に対する、濾過前後のメンブランフィルター重量の差を残さ量(重量%)とした。
腹部が100mm×25mm、首部が255mm×12mm、肉厚が1mmのガラスアンプルにPPS樹脂3gを計り入れてから真空封入した。このガラスアンプルの胴部のみを、アサヒ理化製作所製のセラミックス電気管状炉ARF-30Kに挿入して320℃で2時間加熱した。アンプルを取り出した後、管状炉によって加熱されておらず揮発ガスの付着したアンプルの首部をヤスリで切り出して秤量した。次いで付着ガスを5gのクロロホルムで溶解して除去した後、60℃のガラス乾燥機で1時間乾燥してから再度秤量した。ガスを除去した前後のアンプル首部の重量差をガス発生量(重量%)とした。
測定温度315.5℃、5,000g荷重とし、ASTM-D1278-70に従って測定した。
ゲル浸透クロマトグラフ測定:WATERS社製(GPC-244)の装置を用い、カラム:ShodexK-806M(昭和電工社製)、溶媒:1-クロロナフタレン、検出器:水素炎イオン化検出器を用い、6種類の単分散ポリスチレンを校正に用い、高分子論文集44巻(1987年)2月号139~141ページ記載の方法に準じて数平均分子量を測定した。
撹拌機および底に弁のついたオートクレーブに、47.5%水硫化ナトリウム8,267.4g(70.0モル)、96%水酸化ナトリウム2,925.0g(70.2モル)、N-メチル-2-ピロリドン(NMP)13,860.0g(140.0モル)、酢酸ナトリウム1894.2g(23.1モル)、およびイオン交換水10,500.0gを仕込み、常圧で窒素を通じながら240℃まで約3時間かけて徐々に加熱し、水14,772.1gおよびNMP280.0gを留出したのち、反応容器を160℃に冷却した。仕込みアルカリ金属硫化物1モル当たりの系内残存水分量は、NMPの加水分解に消費された水分を含めて1.08モルであった。また、硫化水素の飛散量は仕込みアルカリ金属硫化物1モル当たり0.023モルであった。
撹拌機および底栓弁付きの70Lオートクレーブに、47.5%水硫化ナトリウム8.27kg(70.00モル)、96%水酸化ナトリウム2.91kg(69.80モル)、N-メチル-2-ピロリドン(NMP)11.45kg(115.50モル)、およびイオン交換水10.5kgを仕込み、常圧で窒素を通じながら245℃まで約3時間かけて徐々に加熱し、水14.78kgおよびNMP0.28kgを留出した後、反応容器を200℃に冷却した。仕込みアルカリ金属硫化物1モル当たりの系内残存水分量は、NMPの加水分解に消費された水分を含めて1.06モルであった。また、硫化水素の飛散量は、仕込みアルカリ金属硫化物1モル当たり0.02モルであった。
酸素気流下200℃で熱処理すること以外は、参考例2と同様に行い、直鎖状PPS-3を得た。得られたポリマーの数平均分子量は8,000、ガス発生量は0.44重量%、残さ量は1.5重量%、MFRは720g/10minであった。
オートクレーブに30%水硫化ナトリウム水溶液4.67kg(水硫化ナトリウム25モル)、50%水酸化ナトリウム2.00kg(水酸化ナトリウム25モル)ならびにN-メチル-2-ピロリドン(NMP)8kgを仕込み、撹拌しながら徐々に205℃まで昇温し、水3.8kgを含む留出水4.11kgを除去した。残留混合物に1,4-ジクロロベンゼン3.75kg(25.5モル)ならびにNMP2kgを加えて230℃で1時間、更に260℃で30分加熱した。反応生成物を温水で5回洗浄し、80℃で24時間減圧乾燥して、数平均分子量3,700の粉末の直鎖状PPS-4を得た。得られたポリマーの数平均分子量は3,700、ガス発生量は0.54重量%、残さ量は1.3重量%、MFRは9,570g/10minであった。
撹拌機付きの70Lオートクレーブに、47.5%水硫化ナトリウム8,267.37g(70.0モル)、96%水酸化ナトリウム2,962.50g(71.10モル)、N-メチル-2-ピロリドン(NMP)11,434.50g(115.50モル)、酢酸ナトリウム516.60g(6.30モル)、及びイオン交換水10,500gを仕込み、常圧で窒素を通じながら230℃まで約3時間かけて徐々に加熱し、水14,780.1gおよびNMP280gを留出した後、反応容器を160℃に冷却した。仕込みアルカリ金属硫化物1モル当たりの系内残存水分量は、NMPの加水分解に消費された水分を含めて1.06モルであった。また、硫化水素の飛散量は、仕込みアルカリ金属硫化物1モル当たり0.017モルであった。
酢酸ナトリウムを1,722.00g(21.00モル)仕込んだこと以外は、参考例5と同様に行い、直鎖状PPS-6を得た。得られたポリマーの数平均分子量は8,900、ガス発生量は0.09重量%、残さ量は0.02重量%、MFRは210g/10minであった。
本実施例および比較例に用いた配合物は以下の通りである。
PPS-1:参考例1に記載の方法で重合したPPS樹脂
PPS-2:参考例2に記載の方法で重合したPPS樹脂
PPS-3:参考例3に記載の方法で重合したPPS樹脂
PPS-4:参考例4に記載の方法で重合したPPS樹脂
PPS-5:参考例5に記載の方法で重合したPPS樹脂
PPS-6:参考例6に記載の方法で重合したPPS樹脂
(B)ガラス繊維
B:チョップドストランド(日本電気硝子株式会社製 T-760H 3mm長 平均繊維径10.5μm)
(C)シラン化合物
C-1:3-アミノプロピルトリエトキシシラン(信越化学工業株式会社製 KBE-903)
C-2:3-イソシアネートプロピルトリエトキシシラン(信越化学工業株式会社製 KBE-9007)
(D)添加剤
D-1:ポリエチレン(三井化学株式会社製 ハイゼックス 7000FP)
D-2:アミド化合物(共栄社化学株式会社製 ライトアマイド WH500)
D-3:有機結晶核剤(ビクトレックスエムシー社製 ポリエーテルエーテルケトン PEEK450-PF)。
本実施例および比較例における測定評価方法は以下の通りである。
ISO 527-1、2(2012)に準拠して測定を行った。具体的には次のように測定を行った。本発明のPPS樹脂組成物ペレットを、熱風乾燥機を用いて130℃で3時間乾燥した後、シリンダー温度:310℃、金型温度:145℃に設定した住友重機械工業株式会社製射出成形機(SE-50D)に供給し、ISO20753(2008)に規定されるタイプA1試験片形状(4mm厚み)の金型を用いて、中央平行部の断面積を通過する溶融樹脂の平均速度が400±50mm/sとなる条件で射出成形を行い、試験片を得た。この試験片を、23℃、相対湿度50%の条件で16時間状態調節を行った後、23℃、相対湿度50%の雰囲気下、つかみ具間距離:115mm、試験速度:5mm/minの条件で、ISO 527-1、-2(2012)に準拠して引張強度の測定を行った。185MPa以上であれば実用上問題のない製品レベルといえるが、この値が高いほど機械的強度に優れ、好ましい。
不凍液は、フォルクスワーゲン純正LLC(G13)を、蒸留水で50重量%水溶液に希釈して調製した。150℃の温度で、500時間、ISO 20753に規定されるタイプA1試験片形状(4mm厚み)の試験片を不凍液に浸漬処理した後、付着した液体を拭き取り、23℃、相対湿度50%の条件で16時間状態調節を行った後、23℃、相対湿度50%の雰囲気下、つかみ具間距離:115mm、試験速度:5mm/minの条件で、ISO 527-1,-2法に準拠して引張強度の測定を行った。(不凍液浸漬処理後の引張強度/(1)記載の引張強度)から算出される値を百分率で表示し、その値を引張強度保持率とした。75%以上であれば実用上問題のない製品レベルといえるが、この値が高いほど耐不凍液性に優れ、好ましい。
図1に示す成形品(成形品サイズ;長さ55mm、幅20mm、厚み2mm、ゲートサイズ;幅2mm、厚み1mm(サイドゲート)、ガスベント部最大長さ20mm、幅10mm、深さ5μm)のガス評価用金型で、シリンダー温度330℃、金型温度130℃、射出速度100mm/sとして、樹脂組成物ごとの充填時間が0.4秒となるよう射出圧力を50~80MPa内で設定して連続成形を行い、10ショット毎に金型ガスベント部の金型汚染状況を目視にて観察した(使用成形機:住友重機製”SE-30D”)。付着までのショット数が100ショット以上あれば実用上、使用可能なレベルといえるが、このショット数が大きいほどモールドデポジット性に優れ、好ましい。
両端にゲートを有し、試験片中央部付近にウエルドラインを有するASTM4号ダンベル片(1.6mmt)を、射出成形機を用いてシリンダー温度320℃、金型温度135℃の条件で成形した。測定用のサンプルを10本取得し、試験速度:10mm/min、つかみ具間距離:64mmの条件で引張強度測定を行った。65MPa以上であれば実用上問題のない製品レベルといえるが、この値が高いほど機械的強度に優れ好ましい。
1mm厚みのスパイラルフロー金型を用いて、シリンダー温度320℃、金型温度140℃、射出速度230mm/sec、射出圧力98MPa、射出時間5sec、冷却時間15secの条件で成形し、流動長測定を行なった(使用射出成形機:住友重機製”SE-30D”)。この値が大きいほど流動性に優れる。
PPS樹脂組成物のペレットから約10mgをサンプルとして採取し、パーキンエルマー社製示差走査熱量計DSC-7を用い、昇温速度20℃/分で昇温し、340℃で5分間保持後、20℃/分の速度で降温させた時の結晶化ピーク温度を測定し、溶融結晶化ピーク温度とした。
シリンダー温度を320℃、スクリュー回転数を400rpmに設定した、26mm直径の中間添加口を有する2軸押出機(東芝機械株式会社製TEM-26)を用いて、参考例1~6で得たPPS樹脂(A)100重量部を表1に示す重量比で原料供給口から添加して溶融状態とし、(B)無機充填材を表1に示す重量比で中間添加口から供給し、吐出量30kg/時間で溶融混練してペレットを得た。このペレットを用いて前記の各特性を評価した。その結果を表1および表2に示す。
2.バルブ
3.軸
4.パイプ
5.孔部
6.パッキン
7.キャビティ部
8.ゲート部
Claims (6)
- (A)ポリフェニレンスルフィド樹脂100重量部に対し、(B)ガラス繊維を30~110重量部、ならびに(C)官能基としてイソシアネート基を有するシラン化合物を0.1~3重量部を配合してなるポリフェニレンスルフィド樹脂組成物であって、前記(A)ポリフェニレンスルフィド樹脂の数平均分子量が7000~14000であって、前記(A)ポリフェニレンスルフィド樹脂の250℃で5分間、20倍重量の1-クロロナフタレンに溶解してポアサイズ1μmのPTFEメンブランフィルターで熱時加圧濾過した際の残さ量が2.0~5.0重量%である自動車冷却部品用ポリフェニレンスルフィド樹脂組成物。
- 請求項1に記載のポリフェニレンスルフィド樹脂組成物の溶融結晶化ピーク温度が、230℃以上である請求項1に記載のポリフェニレンスルフィド樹脂組成物。
- 下記(i)、(ii)の条件をいずれも満たす請求項1または2のいずれかに記載のポリフェニレンスルフィド樹脂組成物、
(i)ポリフェニレンスルフィド樹脂組成物を射出成形してなるISO 20753に規定されるタイプA1試験片(以下、ISO試験片と呼ぶ。)を用い、引張速度5mm/min、雰囲気温度23℃の条件で、ISO 527-1、-2法に準拠し、測定した引張強度が190MPa以上であり、
(ii)前記ISO試験片を用い、150℃の不凍液に500時間浸漬処理した後、引張速度5mm/min、雰囲気温度23℃の条件で、ISO 527-1、-2法に準拠し、測定した引張強度の保持率が80%以上である。 - 請求項1~請求項3のいずれかに記載のポリフェニレンスルフィド樹脂組成物からなる自動車冷却部品。
- 請求項1~請求項3のいずれかに記載のポリフェニレンスルフィド樹脂組成物を射出成形してなるハウジング、および少なくとも2つのパイプを組み合わせてなる自動車冷却部品。
- 請求項1~請求項3のいずれかに記載のポリフェニレンスルフィド樹脂組成物を射出成形してなるハウジング、バルブ、および少なくとも3つのパイプを組み合わせてなる自動車冷却部品。
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| JP2006219666A (ja) | 2005-01-14 | 2006-08-24 | Toray Ind Inc | ポリアリーレンスルフィド樹脂組成物 |
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| JP4887904B2 (ja) * | 2006-05-19 | 2012-02-29 | 東レ株式会社 | ポリフェニレンスルフィド樹脂、その製造方法およびそれからなる成形品 |
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| EP4063095A1 (en) | 2022-09-28 |
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