WO2022107715A1 - 無機強化熱可塑性ポリエステル樹脂組成物及びその製造方法 - Google Patents
無機強化熱可塑性ポリエステル樹脂組成物及びその製造方法 Download PDFInfo
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- WO2022107715A1 WO2022107715A1 PCT/JP2021/041865 JP2021041865W WO2022107715A1 WO 2022107715 A1 WO2022107715 A1 WO 2022107715A1 JP 2021041865 W JP2021041865 W JP 2021041865W WO 2022107715 A1 WO2022107715 A1 WO 2022107715A1
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- Prior art keywords
- resin composition
- mass
- glass fiber
- polyester resin
- reinforced thermoplastic
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 76
- 229920006230 thermoplastic polyester resin Polymers 0.000 title claims abstract description 52
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000003365 glass fiber Substances 0.000 claims abstract description 98
- 239000000835 fiber Substances 0.000 claims abstract description 73
- 229920005989 resin Polymers 0.000 claims abstract description 65
- 239000011347 resin Substances 0.000 claims abstract description 65
- -1 polybutylene terephthalate Polymers 0.000 claims abstract description 62
- 239000012779 reinforcing material Substances 0.000 claims abstract description 58
- 229920001707 polybutylene terephthalate Polymers 0.000 claims abstract description 32
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 25
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 25
- 239000000155 melt Substances 0.000 claims abstract description 10
- 239000004431 polycarbonate resin Substances 0.000 claims abstract description 10
- 229920005668 polycarbonate resin Polymers 0.000 claims abstract description 10
- 239000003112 inhibitor Substances 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims description 27
- 238000002425 crystallisation Methods 0.000 claims description 17
- 230000008025 crystallization Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 125000004185 ester group Chemical group 0.000 claims 1
- 239000011521 glass Substances 0.000 abstract description 14
- 239000011342 resin composition Substances 0.000 abstract description 14
- 238000005809 transesterification reaction Methods 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 6
- 238000005188 flotation Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 39
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 25
- 229920001225 polyester resin Polymers 0.000 description 22
- 239000004645 polyester resin Substances 0.000 description 21
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 17
- 238000007334 copolymerization reaction Methods 0.000 description 14
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 14
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 12
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 10
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 9
- 238000007667 floating Methods 0.000 description 9
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 9
- 229920000515 polycarbonate Polymers 0.000 description 9
- 239000004417 polycarbonate Substances 0.000 description 9
- 230000009467 reduction Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- 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 7
- 230000000052 comparative effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000004898 kneading Methods 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 239000012046 mixed solvent Substances 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- 235000019445 benzyl alcohol Nutrition 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 4
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 4
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 150000002148 esters Chemical group 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 229920001519 homopolymer Polymers 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 2
- QWGRWMMWNDWRQN-UHFFFAOYSA-N 2-methylpropane-1,3-diol Chemical compound OCC(C)CO QWGRWMMWNDWRQN-UHFFFAOYSA-N 0.000 description 2
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000004668 long chain fatty acids Chemical class 0.000 description 2
- 229910052751 metal Chemical class 0.000 description 2
- 239000002184 metal Chemical class 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000006082 mold release agent Substances 0.000 description 2
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- UTOPWMOLSKOLTQ-UHFFFAOYSA-N octacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O UTOPWMOLSKOLTQ-UHFFFAOYSA-N 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001757 thermogravimetry curve Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- 229940114072 12-hydroxystearic acid Drugs 0.000 description 1
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 1
- MMINFSMURORWKH-UHFFFAOYSA-N 3,6-dioxabicyclo[6.2.2]dodeca-1(10),8,11-triene-2,7-dione Chemical group O=C1OCCOC(=O)C2=CC=C1C=C2 MMINFSMURORWKH-UHFFFAOYSA-N 0.000 description 1
- WSQZNZLOZXSBHA-UHFFFAOYSA-N 3,8-dioxabicyclo[8.2.2]tetradeca-1(12),10,13-triene-2,9-dione Chemical compound O=C1OCCCCOC(=O)C2=CC=C1C=C2 WSQZNZLOZXSBHA-UHFFFAOYSA-N 0.000 description 1
- 125000004203 4-hydroxyphenyl group Chemical group [H]OC1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- BXBLUHGAOHAIGV-UHFFFAOYSA-N 4-n-[2-[(4-carbamoylbenzoyl)amino]ethyl]benzene-1,4-dicarboxamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)NCCNC(=O)C1=CC=C(C(N)=O)C=C1 BXBLUHGAOHAIGV-UHFFFAOYSA-N 0.000 description 1
- 235000021357 Behenic acid Nutrition 0.000 description 1
- 239000004429 Calibre Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229940116226 behenic acid Drugs 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229910000085 borane Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- NWZZFAQUBMRYNU-UHFFFAOYSA-N n-octadecylnonadec-18-en-1-amine Chemical compound CCCCCCCCCCCCCCCCCCNCCCCCCCCCCCCCCCCCC=C NWZZFAQUBMRYNU-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229960004063 propylene glycol Drugs 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000012321 sodium triacetoxyborohydride Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229960004274 stearic acid Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- UORVGPXVDQYIDP-UHFFFAOYSA-N trihydridoboron Substances B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
Definitions
- the present invention relates to an inorganic reinforced thermoplastic polyester resin composition containing a thermoplastic polyester resin and an inorganic reinforcing material such as glass fiber. Specifically, it is an inorganic reinforced thermoplastic that can obtain a molded product having high rigidity and high strength, less appearance defects due to floating of the inorganic reinforcing material of the molded product, and a uniform textured appearance and a mirror surface appearance without unevenness.
- the present invention relates to an inorganic reinforced thermoplastic polyester resin composition which is a polyester resin composition and further has good fluidity and low burr property even in the molding of long and thin-walled molded products.
- polyester resin has excellent mechanical properties, heat resistance, chemical resistance, etc., and is widely used in automobile parts, electrical / electronic parts, household goods, etc.
- the polyester resin composition reinforced with an inorganic reinforcing material such as glass fiber dramatically improves the rigidity, strength and heat resistance, and particularly the rigidity is improved according to the amount of the inorganic reinforcing material added. ing.
- the inorganic reinforcing material such as glass fiber added when the amount of the inorganic reinforcing material such as glass fiber added is large, the inorganic reinforcing material such as glass fiber tends to emerge on the surface of the molded product, and in the molded product where surface gloss is desired, the deterioration of the surface gloss is matte. In the molded product on the surface, poor texture appearance may be a problem.
- a polyester resin having a high crystallization rate such as polybutylene terephthalate has poor transferability to a mold due to crystallization during molding, so that it is very difficult to obtain a satisfactory appearance.
- Patent Document 1 As a method for obtaining a good grained appearance, a method using isophthalic acid-modified polybutylene terephthalate or a polycarbonate resin (for example, Patent Documents 1 and 2) has been proposed, but Patent Document 1 has high mechanical strength and high strength. If the filling amount is increased in order to obtain rigidity, there is a problem that the appearance is impaired. In Patent Document 2, since it is necessary to add a large amount of isophthalic acid-modified polybutylene terephthalate or polycarbonate resin, molding is performed. It was not satisfactory in terms of stability and molding cycle.
- Patent Document 3 has been proposed as an improvement over these drawbacks, but the rigidity is insufficient in applications requiring high rigidity, and if the amount of reinforcing material is increased to increase the rigidity, the appearance is deteriorated, and further, molding is performed. The range of conditions was very narrow, and there were drawbacks such as stable and difficult to obtain good products.
- the present invention has high rigidity (bending elastic modulus exceeds 20 GPa), high strength, and less appearance defects and warp deformation due to floating of the inorganic reinforcing material of the molded product, and has a uniform textured appearance without unevenness.
- the challenge is to provide an inorganic reinforced thermoplastic polyester resin composition that can obtain products and that can ensure stable quality with little variation in quality such as mechanical strength, appearance, and warpage even in long-term production. do.
- the present inventors have found that the cause of quality variations such as mechanical strength, appearance, and warpage in long-term production is the polyester resin composition.
- the above-mentioned problems can be achieved by setting the fiber length in a specific range, which is related to the fiber length in the object, and completed the present invention.
- the present invention has the following configuration.
- the inorganic reinforced thermoplastic polyester resin composition in which the total of the components (A), (B), (C), (D), (E) and (F) is 100 parts by mass.
- the glass fiber-based reinforcing material (F) has at least 40 to 55 parts by mass of a flat cross-section glass fiber (F1) having a ratio of major axis to minor axis (major axis / minor axis) of 1.3 to 8 and a fiber length. Contains 5 to 20 parts by mass of short glass fiber milled fiber (F2) of 30 to 150 ⁇ m.
- the weight average fiber length Lw of the glass fiber-based reinforcing material (F) in the inorganic reinforced thermoplastic polyester resin composition is 200 to 700 ⁇ m.
- An inorganic reinforced thermoplastic polyester resin composition having a melt viscosity of 0.6 kPa ⁇ s or more and 1.5 kPa ⁇ s or less at 270 ° C. and a shear rate of 10 sec -1 .
- TC2 temperature lowering crystallization temperature
- DSC differential scanning calorimeter
- the number average fiber length Ln and the weight average fiber length Lw of the glass fiber-based reinforcing material (F) in the inorganic reinforced thermoplastic polyester resin composition satisfy 1.1 ⁇ Lw / Ln ⁇ 2.4.
- the method for producing an inorganic reinforced thermoplastic polyester resin composition according to any one of.
- the solidification (crystallization) rate of the resin composition in the mold (TC2 is an alternative major) is within a specific range.
- each component constituting the inorganic reinforced thermoplastic policel resin composition described below is described in terms of parts by mass, and (A), (B), (C), (D), (E), and ( F) It is a mass part when the total of the components is 100 parts by mass.
- the blending amount (mass ratio) of each component used as a raw material becomes the content (mass ratio) of each component in the inorganic reinforced thermoplastic policel resin composition as it is. ..
- the polybutylene terephthalate resin (A) in the present invention is a resin as a main component among all polyester resins in the resin composition of the present invention. It is preferable that the content is the highest among all polyester resins.
- the polybutylene terephthalate resin (A) is not particularly limited, but a homopolymer composed of terephthalic acid and 1,4-butanediol is preferably used. Further, when the total acid component constituting the polybutylene terephthalate resin (A) is 100 mol% and the total glycol component is 100 mol% within a range that does not impair moldability, crystallinity, surface gloss, etc., other components Can be copolymerized up to about 5 mol%. Examples of other components include components used in the copolymerized polybutylene terephthalate resin (C) described below.
- the molecular weight of the polybutylene terephthalate resin (A) is measured at 30 ° C. using a Ubbelohde viscous tube by dissolving a 0.1 g sample in 25 ml of a mixed solvent of phenol / tetrachloroethane (mass ratio 6/4). ) Is preferably in the range of 0.5 to 0.7 dl / g, and more preferably in the range of 0.6 to 0.7 dl / g. When it is less than 0.5 dl / g, the toughness of the resin tends to be significantly lowered, and the fluidity is too high, so that burrs tend to occur easily.
- the content of the polybutylene terephthalate resin (A) is 8 to 20 parts by mass, preferably 10 to 20 parts by mass, and more preferably 13 to 18 parts by mass. By blending the polybutylene terephthalate resin (A) within this range, various characteristics can be satisfied.
- the polyethylene terephthalate resin (B) in the present invention is basically a homopolymer of ethylene terephthalate units. Further, when the total acid component constituting the polyethylene terephthalate resin (B) is 100 mol% and the total glycol component is 100 mol%, the other components are copolymerized to about 5 mol% within a range that does not impair various characteristics. can do. Examples of other components include components used in the copolymerized polyethylene terephthalate resin (D) described below. Other components also include diethylene glycol produced by condensation of ethylene glycol during polymerization.
- the molecular weight of the polyethylene terephthalate resin (B) is reduced viscosity (0.1 g sample is dissolved in 25 ml of a mixed solvent of phenol / tetrachloroethane (mass ratio 6/4) and measured at 30 ° C. using an Ubbelohde viscosity tube). Is preferably 0.4 to 1.0 dl / g, and more preferably 0.5 to 0.9 dl / g. If it is less than 0.4 dl / g, the strength of the resin tends to decrease, and if it exceeds 1.0 dl / g, the fluidity of the resin tends to decrease.
- the content of the polyethylene terephthalate resin (B) is 1 to 7 parts by mass, preferably 2 to 7 parts by mass, and more preferably 3 to 6 parts by mass.
- the copolymerized polybutylene terephthalate resin (C) in the present invention contains 80 mol% or more of 1,4-butanediol and 80 mol% or more of 1,4-butanediol when the total acid component is 100 mol% and the total glycol component is 100 mol%. It is a resin in which the total of terephthalic acid and 1,4-butanediol accounts for 120 to 180 mol%.
- copolymerization components isophthalic acid, sebacic acid, adipic acid, trimellitic acid, 2,6-naphthalenedicarboxylic acid, ethylene glycol, diethylene glycol, neopentyl glycol, 1,4-cyclohexanedimethanol, 1,2-propane. At least one selected from the group consisting of diol, 1,3-propanediol, and 2-methyl-1,3-propanediol can be contained as a copolymerization component. Of these, isophthalic acid is preferable as the copolymerization component.
- the copolymerization ratio of isophthalic acid is preferably 20 to 80 mol%, more preferably 20 to 60 mol%. If the copolymerization ratio is less than 20 mol%, the transferability to the mold is inferior and it tends to be difficult to obtain a sufficient appearance, and if the copolymerization amount exceeds 80 mol%, the molding cycle is lowered and the mold releasability is lowered. May cause.
- the molecular weight of the copolymerized polybutylene terephthalate resin (C) varies slightly depending on the specific copolymerization composition, but a reduced viscosity (0.1 g sample is used in 25 ml of a mixed solvent of phenol / tetrachloroethane (mass ratio 6/4)). Dissolved and measured at 30 ° C. using a Ubbelohde viscous tube) is preferably 0.4 to 1.5 dl / g, more preferably 0.4 to 1.3 dl / g. If it is less than 0.4 dl / g, the toughness tends to decrease, and if it exceeds 1.5 dl / g, the fluidity tends to decrease.
- the content of the copolymerized polybutylene terephthalate resin (C) is 1 to 12 parts by mass, preferably 2 to 10 parts by mass, more preferably 2 to 7 parts by mass, and further preferably 3 to 6 parts by mass. It is a department. If it is less than 1 part by mass, appearance defects due to floating of glass fibers and mold transfer defects become conspicuous, and if it exceeds 12 parts by mass, the appearance of the molded product is good, but the molding cycle becomes long. It is not preferable because it ends up.
- the copolymerized polyethylene terephthalate resin (D) in the present invention contains 40 mol% or more of ethylene glycol and terephthalic acid and ethylene glycol when the total acid component is 100 mol% and the total glycol component is 100 mol%. It is a resin in which the total of 80 to 180 mol% of the resin accounts for 80 to 180 mol%.
- copolymerization components isophthalic acid, sebacic acid, adipic acid, trimellitic acid, 2,6-naphthalenedicarboxylic acid, diethylene glycol, neopentyl glycol, 1,4-cyclohexanedimethanol, 1,4-butanediol, 1 , 2-Propanediol, 1,3-Propanediol, and at least one selected from the group consisting of 2-methyl-1,3-propanediol can be contained as a copolymerization component.
- the copolymerized polyethylene terephthalate resin (D) is preferably amorphous.
- neopentyl glycol or a combination of neopentyl glycol and isophthalic acid is preferable as a copolymerization component from the viewpoint of various characteristics.
- 1,4-butanediol is preferably 20 mol% or less.
- the copolymerization ratio of neopentyl glycol is preferably 20 to 60 mol%, more preferably 25 to 50 mol%.
- the copolymerization ratio of isophthalic acid is preferably 20 to 60 mol%, more preferably 25 to 50 mol%.
- the molecular weight of the copolymerized polyethylene terephthalate resin (D) varies slightly depending on the specific copolymerization composition, but the reduced viscosity (0.1 g sample is dissolved in 25 ml of a mixed solvent of phenol / tetrachloroethane (mass ratio 6/4)). (Measured at 30 ° C. using a Ubbelohde viscous tube) is preferably 0.4 to 1.5 dl / g, more preferably 0.4 to 1.3 dl / g. If it is less than 0.4 dl / g, the toughness tends to decrease, and if it exceeds 1.5 dl / g, the fluidity tends to decrease.
- the content of the copolymerized polyethylene terephthalate resin (D) is 5 to 12 parts by mass, preferably 6 to 12 parts by mass, and more preferably 7 to 10 parts by mass. If it is less than 5 parts by mass, poor appearance due to floating of glass fibers or the like becomes conspicuous, and if it exceeds 12 parts by mass, the appearance of the molded product is good, but it is not preferable because the molding cycle becomes long.
- the polycarbonate in the polycarbonate resin (E) used in the present invention is prepared by a solvent method, that is, in the presence of a known acid acceptor and a molecular weight modifier in a solvent such as methylene chloride, a carbonate such as dihydric phenol and phosgene. It can be produced by a reaction with a precursor or an ester exchange reaction between a dihydric phenol and a carbonate precursor such as diphenyl carbonate.
- bisphenols are preferably used as divalent phenols, and in particular, 2,2-bis (4-hydroxyphenyl) propane, that is, bisphenol A. Further, a part or all of bisphenol A may be replaced with another divalent phenol.
- dihydric phenol other than bisphenol A examples include compounds such as hydroquinone, 4,4-dihydroxydiphenyl and bis (4-hydroxyphenyl) alkane, bis (3,5-dibromo-4-hydroxyphenyl) propane and bis (3). , 5-Dichloro-4-hydroxyphenyl) Halogenized bisphenols such as propane can be mentioned.
- the polycarbonate may be a homopolymer using one kind of divalent phenol or a copolymer using two or more kinds.
- the polycarbonate-based resin (E) a resin consisting only of polycarbonate is preferably used.
- the polycarbonate-based resin (E) may be a resin obtained by copolymerizing a component other than polycarbonate (for example, a polyester component) within a range that does not impair the effect of the present invention (20% by mass or less).
- the polycarbonate resin (E) used in the present invention is particularly preferably one having high fluidity, and preferably one having a melt volume rate (unit: cm 3/10 min) of 20 to 100 measured at 300 ° C. and a load of 1.2 kg. It is used, more preferably 25 to 95, still more preferably 30 to 90. If less than 20, the fluidity is significantly lowered, and the strand stability may be lowered or the moldability may be deteriorated. If the melt volume rate is more than 100, the molecular weight is too low, which tends to cause deterioration of physical properties and problems such as gas generation due to decomposition.
- the content of the polycarbonate resin (E) used in the present invention is 1 to 6 parts by mass, preferably 2 to 5 parts by mass. If it is less than 1 part by mass, the effect of improving the appearance of the grain is small, and if it exceeds 6 parts by mass, the molding cycle is deteriorated due to the decrease in crystallinity and the appearance is likely to be poor due to the decrease in fluidity, which is not preferable. ..
- the glass fiber-based reinforcing material (F) in the present invention is a milled fiber which is a short glass fiber having an average fiber diameter of about 4 to 20 ⁇ m and a cut length of about 30 to 150 ⁇ m, an average fiber diameter of about 1 to 20 ⁇ m, and a fiber length of 1 to 1 to 2.
- a chopped strand shape cut to about 20 mm can be preferably used.
- As the cross-sectional shape of the glass fiber a glass fiber having a circular cross section and a non-circular cross section can be used.
- As the glass fiber having a circular cross-sectional shape an average fiber diameter of about 4 to 20 ⁇ m and a cut length of about 2 to 6 mm can be used.
- the glass fiber having a non-circular cross section includes those having a substantially elliptical shape, a substantially oval shape, and a substantially cocoon shape in a cross section perpendicular to the length direction of the fiber length, and has a flatness of 1.3 to 8. Is preferable.
- the flatness is assumed to be a rectangle having the smallest area circumscribing a cross section perpendicular to the longitudinal direction of the glass fiber, the length of the long side of this rectangle is the major axis, and the length of the short side is the minor axis. It is the ratio of the major axis / the minor axis at the time of.
- the thickness of the glass fiber is not particularly limited, but a glass fiber having a minor axis of about 1 to 20 ⁇ m and a major axis of about 2 to 100 ⁇ m can be used. One type of these glass fibers may be used alone, or two or more types may be used in combination.
- the glass fiber-based reinforcing material (F) is preferably a flat cross-section glass fiber (F1) in which the ratio of the major axis to the minor axis (major axis / minor axis) of the fiber cross section is 1.3 to 8 from the viewpoint of appearance and elasticity. From the viewpoint of suppressing glass floating, short glass fiber milled fiber (F2) having a fiber length of 30 to 150 ⁇ m is preferable.
- the flat cross-section glass fiber (F1) and the glass staple fiber milled fiber (F2) are used in combination as the glass fiber-based reinforcing material (F). If necessary, glass fiber having a circular cross-sectional shape may be further used.
- the average fiber diameter and average fiber length of glass fibers can be measured by electron microscope observation.
- these glass fibers those which have been previously treated with a conventionally known coupling agent such as an organic silane compound, an organic titanium compound, an organic borane compound and an epoxy compound can be preferably used.
- a conventionally known coupling agent such as an organic silane compound, an organic titanium compound, an organic borane compound and an epoxy compound.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention can be used in combination with an inorganic reinforced material other than the above-mentioned glass fiber, depending on the purpose and as long as the characteristics are not impaired. Specific examples thereof include mica, wallastnite, needle-shaped wallastonite, glass flakes, glass beads and the like, which are generally commercially available, and these are treated with a generally known coupling agent. Even things can be used without problems.
- an inorganic reinforcing material other than glass fiber when considering the content of each component of the inorganic reinforced thermoplastic polyester resin composition of the present invention, the total amount of glass fiber and other inorganic reinforcing materials is the glass fiber system. It is the content of the reinforcing material (F).
- the glass fiber and other inorganic reinforcing material are used in combination, it is preferable to use 50% by mass or more, more preferably 70% by mass or more, and 80% by mass of the glass fiber in the glass fiber-based reinforcing material (F). It is more preferable to use% or more.
- a material exhibiting a large nucleating agent effect such as talc
- TC2 temperature lowering crystallization temperature
- the content of the glass fiber-based reinforcing material (F) in the present invention is 50 to 70 parts by mass, preferably 60 to 67 parts by mass, and more preferably 62 to 66 parts by mass from the viewpoint of rigidity and strength.
- the glass fiber-based reinforcing material (F) 40 to 55 parts by mass of a flat cross-section glass fiber (F1) having at least a ratio (major axis / minor axis) of the major axis to the minor axis of the fiber section of 1.3 to 8 is provided.
- the flat cross-section glass fiber (F1) is preferably 42 to 53 parts by mass, more preferably 45 to 50 parts by mass.
- the glass staple fiber (F2) is preferably 10 to 18 parts by mass, more preferably 12 to 17 parts by mass.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention is inorganically reinforced by using a flat cross-section glass fiber (F1) and a glass short fiber milled fiber (F2) as the glass fiber-based reinforcing material (F) in the above range. It is possible to increase the Charpy impact strength of the molded product obtained by injection molding the thermoplastic polyester resin composition to 20 kJ / m 2 or more. By setting the glass fiber-based reinforcing material (F) to this composition ratio, it is possible to obtain a good appearance while having high mechanical properties. The higher the Charpy impact strength (as long as a good appearance can be maintained), the better, preferably 22 kJ / m 2 or more.
- the transesterification inhibitor (G) used in the present invention is a stabilizer that prevents the transesterification reaction of the polyester resin.
- transesterification occurs not a little due to the addition of thermal history, no matter how much the conditions at the time of manufacture are optimized. When the degree becomes very large, the expected characteristics cannot be obtained due to the alloy.
- transesterification of polybutylene terephthalate and polycarbonate often occurs, and in this case, the crystallinity of polybutylene terephthalate is significantly reduced, which is not preferable.
- the transesterification reaction between the polybutylene terephthalate resin (A) and the polycarbonate resin (E) is prevented, whereby appropriate crystallinity can be maintained.
- the transesterification inhibitor (G) a phosphorus-based compound having a catalytic deactivation effect of a polyester-based resin can be preferably used, and for example, "ADEKA STUB AX-71" manufactured by ADEKA Corporation can be used.
- the amount of the transesterification inhibitor (G) used in the present invention is 0.05 to 2 parts by mass, preferably 0.1 to 1 part by mass. If it is less than 0.05 parts by mass, the required transesterification prevention performance is often not exhibited, and conversely, even if it is added in excess of 2 parts by mass, the effect is not improved so much, and conversely, gas or the like is added. It may be a factor to increase.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention contains 50 to 70 parts by mass of the glass fiber-based reinforcing material (F), bending of a molded product obtained by injection molding the inorganic reinforced thermoplastic polyester resin composition.
- the elasticity can exceed 20 GPa.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention is characterized in that this value is in the range of 160 ° C. or higher and lower than 180 ° C. when the temperature lowering crystallization temperature obtained by a differential scanning calorimeter (DSC) is TC2. do.
- the TC2 is 10 ° C./min after being heated to 300 ° C. at a heating rate of 20 ° C./min under a nitrogen stream using a differential scanning calorimeter (DSC) and held at that temperature for 5 minutes. It is the top temperature of the crystallization peak of the thermogram obtained by lowering the temperature to 100 ° C. at the rate of.
- the TC2 is 180 ° C.
- the crystallization rate of the polyester resin composition becomes high and the crystallization in the mold occurs quickly. Therefore, the propagation speed of the injection pressure tends to decrease particularly in the composition containing a large amount of the inorganic reinforcing material. As a result, the adhesion between the ejected material and the mold becomes insufficient and the influence of crystallization shrinkage causes the inorganic reinforcing material such as glass fiber to stand out on the surface of the molded product, so-called glass floating, etc., and the appearance of the molded product. Will get worse. In that case, a method of delaying the solidification of the molded product by raising the mold temperature to a high temperature of 120 to 130 ° C.
- the pressure during molding makes it easier for the resin to penetrate deeper into the grain, so the grain depth becomes uneven due to the grain shifting when the resin in the mold shrinks or is released. It becomes difficult to obtain a good grained appearance.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention has been adjusted so as to have an optimum TC2 in consideration of these concerns at the time of molding, it has a good appearance and molding even when the mold temperature is 100 ° C. or lower. You can get sex.
- TC2 is more preferably 163 ° C or higher and 177 ° C or lower, and further preferably 165 ° C or higher and 175 ° C or lower.
- the TC2 can be adjusted by adjusting the content of the polyethylene terephthalate resin (B) and the copolymerized polyethylene terephthalate resin (D), but these components have a great influence on the shrinkage rate, the releasability, etc. There have been problems such as a narrow molding condition width in which a good appearance can be obtained even if the TC2 is within the target range by the adjustment of the above, and the mold releasability deteriorates even if a good appearance can be obtained.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention has an extremely wide range of molding conditions to obtain a good appearance by adjusting TC2 with a specific content of the copolymerized polybutylene terephthalate resin (C), and has other characteristics. It was found that molding is possible without adversely affecting the plastic. According to the present invention, even in a composition in which the glass fiber-based reinforcing material (F) is contained in an amount of more than 60% by mass in 100% by mass of the inorganic reinforced thermoplastic polyester resin composition, glass floating is extremely likely to occur. Due to the blending effect of the butylene terephthalate resin (C), a good appearance can be obtained with a wide range of molding conditions.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention when molding is performed at a mold temperature of about 90 ° C. using the inorganic reinforced thermoplastic polyester resin composition of the present invention, it is possible to obtain a good surface appearance under a wide range of injection speeds and a wide range of molding conditions, and particularly texture processing. It is possible to obtain a molded product having a very jet-black feeling and a uniform appearance without unevenness with respect to the mold to which the product has been applied.
- the weight average fiber length Lw of the glass fiber-based reinforcing material (F) in the inorganic reinforced thermoplastic polyester resin composition in the present invention is 200 to 700 ⁇ m, preferably 230 to 700 ⁇ m, more preferably 300 to 700 ⁇ m. More preferably, it is 500 to 700 ⁇ m.
- the weight average fiber length Lw is in the above range, the mechanical strength is not so affected by the fiber length, and a molded product having an excellent balance between mechanical properties and fluidity can be obtained.
- the discharge pressure is stable in the manufacturing process and the glass fiber at the tip of the die is less likely to be clogged, it is possible to suppress strand breakage.
- Lw is less than 200 ⁇ m
- the mechanical strength is lowered and burrs are generated during molding as the melt viscosity is lowered.
- Lw exceeds 700 ⁇ m the production stability is lowered and the dispersibility of the glass fiber in the resin composition is also lowered, so that the mechanical strength, appearance, warpage and other qualities vary.
- the number average fiber length Ln and the weight average fiber length Lw of the glass fiber-based reinforcing material (F) in the inorganic reinforced thermoplastic polyester resin composition in the present invention satisfy 1.1 ⁇ Lw / Ln ⁇ 2.4. Is preferable. Since a predetermined amount of glass staple fiber (F2) is used, Lw / Ln of less than 1.1 means that the fiber length of the flat cross-section glass fiber (F1) becomes shorter than necessary, which is preferable. do not have. On the other hand, if it is larger than 2.4, the appearance of the molded product tends to deteriorate. It is more preferable that Lw / Ln satisfies 1.2 or more and 2.3 or less.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention may contain various known additives, if necessary, as long as the characteristics of the present invention are not impaired.
- Known additives include, for example, colorants such as pigments, mold release agents, heat-resistant stabilizers, antioxidants, ultraviolet absorbers, light stabilizers, plasticizers, modifiers, antistatic agents, flame retardants, dyes and the like. Can be mentioned.
- These various additives can be contained up to 5% by mass in total when the inorganic reinforced thermoplastic polyester resin composition is 100% by mass. That is, the total content of (A), (B), (C), (D), (E), (F) and (G) in 100% by mass of the inorganic reinforced thermoplastic polyester resin composition is 95. It is preferably ⁇ 100% by mass.
- the mold release agent examples include long-chain fatty acids or esters and metal salts thereof, amide compounds, polyethylene wax, silicon, polyethylene oxide and the like.
- the long-chain fatty acid is particularly preferably having 12 or more carbon atoms, and examples thereof include stearic acid, 12-hydroxystearic acid, behenic acid, and montanic acid. Partial or total carboxylic acid is esterified with monoglycol or polyglycol. It may be or may form a metal salt.
- the amide compound include ethylene bisterephthalamide and methylenebisstearylamide. These release agents may be used alone or as a mixture.
- the melt viscosity of the inorganic reinforced thermoplastic polyester resin composition of the present invention at 270 ° C. and a shear rate of 10 sec -1 is 0.6 kPa ⁇ s or more and 1.5 kPa ⁇ s or less, preferably 0.7 kPa ⁇ s or more. It is 4 kPa ⁇ s or less, more preferably 0.8 kPa ⁇ s or more and 1.3 kPa ⁇ s or less. If it is less than 0.6 kPa ⁇ s, injection molding becomes difficult. On the other hand, if it is larger than 1.3 kPa ⁇ s, burrs are likely to occur in the molded product. In order to satisfy this melt viscosity, it is important to formulate the above-mentioned composition.
- the acid value of the resin component contained in the inorganic reinforced polyester resin composition of the present invention is preferably 5 to 50 eq / ton.
- the acid value is related to the adhesiveness with the glass fiber and the degree of gas generation during residence. Further, since the acid value affects the toughness of the molded product, it is very important for thin-walled and long-walled molded products. If the acid value is lower than 5 eq / ton, the adhesiveness with the glass fiber is lowered, so that the toughness is lowered and the dispersibility of the glass fiber in the resin composition is lowered, so that quality variation is likely to occur.
- the acid value is more preferably 8 to 45 eq / ton.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention can be produced by mixing the above-mentioned components and various stabilizers, pigments and the like as necessary, and melt-kneading them. Any method well known to those skilled in the art can be used as the melt-kneading method, and a single-screw extruder, a twin-screw extruder, a pressure kneader, a Banbury mixer, or the like can be used. Above all, it is preferable to use a twin-screw extruder. As general melt-kneading conditions, in a twin-screw extruder, the cylinder temperature is 240 to 290 ° C. and the kneading time is 2 to 15 minutes.
- the glass fiber-based reinforcing material (F) or, if necessary, other components from the side feeder and melt-knead.
- the screw element it is preferable to combine a reverse disc and a kneading disc between the main feeder and the side feeder to melt the polyester resin by applying high shear, and further, the molten polyester resin is sent in a forward flight and supplied from the side feeder. It is preferable to merge with the glass fiber-based reinforcing material (F) to be kneaded and knead in a low shear state.
- the molten polyester resin composition is extruded from the die in a low shear state and cooled with water to obtain a strand of the polyester resin composition.
- a molded product can be obtained by vacuum-drying and molding the obtained polyester resin composition at, for example, at 80 ° C. for 12 hours.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention it is preferable to use a twin-screw extruder to separately feed the same type of glass fiber-based reinforcing material (F) from different feeders.
- side feeders can be provided at a plurality of places.
- the fiber length of the glass fiber-based reinforcing material (F) supplied from the upstream side feeder is shorter than the fiber length of the glass fiber-based reinforcing material (F) supplied from the downstream side feeder, but the glass to each side feeder is used.
- the above method is preferable because it is easier to control the fiber length distribution than the method of supplying from the original feeder (main feeder) and one side feeder.
- the position of the side feeder that supplies the glass fiber-based reinforcing material (F) is arbitrarily adjusted according to the aim such as the amount of the glass fiber-based reinforcing material (F), the ease of mixing with the resin, and the fiber length of the reinforcing material. be able to.
- the aim such as the amount of the glass fiber-based reinforcing material (F), the ease of mixing with the resin, and the fiber length of the reinforcing material. be able to.
- a main feeder is provided in the first barrel, and the fourth to seventh barrels are further provided.
- the first side feeder in the first side feeder and the second side feeder in the 8th to 11th barrels because the fiber length can be easily adjusted.
- glass staple fiber (F2) is charged from the first side feeder, and the amount of flat cross-section glass fiber (F1) is 40/60 to 70/30 by mass ratio from the first side feeder and the second side feeder, respectively. Is added to facilitate adjustment to a suitable fiber length.
- a twin-screw extruder having a plurality of side feeders is used, and the same type of glass fiber-based reinforcing material (F) is divided from the plurality of side feeders. It is preferable to put it in. At this time, it is preferable that the glass fiber-based reinforcing material (F) is charged only from a plurality of side feeders without being charged from the main feeder.
- the inorganic reinforced thermoplastic polyester resin composition of the present invention can be made into a molded product by a known molding method.
- the molding method is not specified, and can be suitably used in injection molding, blow molding, extrusion molding, foam molding, malformed molding, calendar molding, and various other molding methods. Of these, injection molding is preferable.
- the above glass fibers were observed with a digital microscope (KH-7700 manufactured by Hi-Rox Co., Ltd.) at a magnification of 80, and the fiber lengths of the number average and the weight average were obtained and used as the number average fiber length and the weight average fiber length, respectively. ..
- the weight average fiber length (Lw) is calculated by the following equation, where (Ni) is the number of fibers having pi, fiber length (Li), density ( ⁇ i), and fiber diameter (ri). can.
- Lw ⁇ (Ni ⁇ ⁇ ⁇ ri 2 ⁇ Li 2 ⁇ ⁇ i) / ⁇ (Ni ⁇ ⁇ ⁇ ri 2 ⁇ Li ⁇ ⁇ i)
- Lw ⁇ (Ni ⁇ Li 2 ) / ⁇ (Ni ⁇ Li)
- Acid value of polyester resin 0.5 g of polyester resin was dissolved in 25 ml of benzyl alcohol and titrated using a benzyl alcohol solution having a concentration of sodium hydroxide of 0.01 mol / l.
- the indicator used was 0.10 g of phenolphthalein dissolved in a mixture of 50 mL of ethanol and 50 mL of water.
- Acid value of the resin component in the resin composition 0.5 g of the resin composition was dissolved in 25 ml of benzyl alcohol and titrated using a benzyl alcohol solution having a sodium hydroxide concentration of 0.01 mol / l.
- the indicator used was 0.10 g of phenolphthalein dissolved in a mixture of 50 mL of ethanol and 50 mL of water.
- Reduction viscosity 0.58 dl / g, acid value 4 eq / ton (A4) Polybutylene terephthalate: manufactured by Toyobo Co., Ltd. Reduction viscosity 0.58 dl / g, acid value 126 eq / ton [Polyethylene terephthalate resin (B)] (B) Polyethylene terephthalate: manufactured by Toyobo Co., Ltd. Reduction viscosity 0.63 dl / g, acid value 20 eq / ton
- Polycarbonate resin (E)] (E1) Polycarbonate: "Calibre 301-40" manufactured by Sumika Stylon Polycarbonate, melt volume rate (300 ° C, load 1.2 kg) 40 cm 3/10 min
- Glass fiber-based reinforcing material (F)] Fiber diameter and fiber length are measured by electron microscope observation
- Raw materials other than the glass fiber-based reinforcing material (F) are charged from the hopper (main feeder) to the twin-screw extruder, and the glass fiber-based reinforcing material (F) is charged from the feeders shown in Table 1 for continuous production for 24 hours. The number of times the strands were broken was confirmed. Further, the pellets of the obtained inorganic reinforced thermoplastic polyester resin composition were dried, and then various evaluation samples were molded by an injection molding machine. The evaluation results are shown in Table 1.
- Comparative Example 1 since Lw was out of the lower limit, the bending strength and the Charpy impact strength were low, and the melt viscosity was also out of the range, so that the amount of burrs was large. Further, in Comparative Examples 2 to 5, since Lw is out of the upper limit, the fluidity of the resin composition is insufficient and the appearance is inferior. In addition, since the glass fiber is easily clogged in the die head during manufacturing, the ejection is unstable and the strand is cut. It became easier.
- a molded product having high strength, high rigidity, and a good surface appearance can be stably obtained in a wide molding condition width, which greatly contributes to the industrial world.
Abstract
Description
特にポリブチレンテレフタレートのような結晶化速度が速いポリエステル樹脂は、成形時の結晶化に伴い、金型への転写性が悪いため、満足する外観を得ることは非常に困難である。
これらの欠点を改善したものとして、特許文献3が提案されたが、高剛性が要求される用途においては剛性が不足し、剛性を高めようと強化材を増量すると外観が低下する、さらには成形条件の幅が非常に狭く安定して良品が得にくい等の欠点が認められていた。
[1] ポリブチレンテレフタレート樹脂(A)8~20質量部、ポリエチレンテレフタレート樹脂(B)1~7質量部、共重合ポリブチレンテレフタレート樹脂(C)1~12質量部、共重合ポリエチレンテレフタレート樹脂(D)5~12質量部、ポリカーボネート系樹脂(E)1~6質量部、ガラス繊維系強化材(F)50~70質量部及びエステル交換防止剤(G)0.05~2質量部を含有し、ここで、前記(A)、(B)、(C)、(D)、(E)及び(F)成分の合計が100質量部である無機強化熱可塑性ポリエステル樹脂組成物であって、
前記ガラス繊維系強化材(F)が、少なくとも繊維断面の長径と短径の比(長径/短径)が1.3~8である扁平断面ガラス繊維(F1)40~55質量部、繊維長30~150μmのガラス短繊維ミルドファイバー(F2)5~20質量部を含み、
無機強化熱可塑性ポリエステル樹脂組成物中のガラス繊維系強化材(F)の重量平均繊維長Lwが200~700μmであり、
270℃、せん断速度10sec-1での溶融粘度が0.6kPa・s以上、1.5kPa・s以下である無機強化熱可塑性ポリエステル樹脂組成物。
[2] 示差走査型熱量計(DSC)で求められる降温結晶化温度(TC2)が、160℃≦TC2<180℃の範囲にある[1]に記載の無機強化熱可塑性ポリエステル樹脂組成物。
[3] 前記無機強化熱可塑性ポリエステル樹脂組成物の樹脂成分の酸価が5~50eq/tonであることを特徴とする[1]または[2]に記載の無機強化熱可塑性ポリエステル樹脂組成物。
[4] 前記無機強化熱可塑性ポリエステル樹脂組成物中のガラス繊維系強化材(F)の数平均繊維長Lnと重量平均繊維長Lwとが、1.1≦Lw/Ln≦2.4を満たすことを特徴とする[1]~[3]のいずれかに記載の無機強化熱可塑性ポリエステル樹脂組成物。
[5] サイドフィーダーを複数個所有する二軸押出機を用い、同一種のガラス繊維系強化材(F)を複数のサイドフィーダーから分割して投入することを特徴とする[1]~[4]のいずれかに記載の無機強化熱可塑性ポリエステル樹脂組成物の製造方法。
共重合ポリエチレンテレフタレート樹脂(D)を構成する全グリコール成分を100モル%としたとき、ネオペンチルグリコールの共重合割合は20~60モル%が好ましく、25~50モル%がより好ましい。
共重合ポリエチレンテレフタレート樹脂(D)を構成する全酸成分を100モル%としたとき、イソフタル酸の共重合割合は20~60モル%が好ましく、25~50モル%がより好ましい。
ガラス繊維系強化材(F)は、外観、弾性率の観点から繊維断面の長径と短径の比(長径/短径)が1.3~8である扁平断面ガラス繊維(F1)が好ましく、ガラス浮きの抑制の観点から繊維長30~150μmのガラス短繊維ミルドファイバー(F2)が好ましい。本発明では、ガラス繊維系強化材(F)として、扁平断面ガラス繊維(F1)とガラス短繊維ミルドファイバー(F2)を併用する。必要に応じて、さらに円形断面形状のガラス繊維を用いても良い。
ガラス繊維の平均繊維径、平均繊維長は電子顕微鏡観察にて測定することができる。
この場合、ガラス繊維系強化材(F)として、少なくとも繊維断面の長径と短径の比(長径/短径)が1.3~8である扁平断面ガラス繊維(F1)40~55質量部、及び繊維長30~150μmのガラス短繊維ミルドファイバー(F2)5~20質量部を含む。扁平断面ガラス繊維(F1)は、42~53質量部が好ましく、45~50質量部がより好ましい。ガラス短繊維ミルドファイバー(F2)は、10~18質量部が好ましく、12~17質量部がより好ましい。
エステル交換防止剤(G)としては、ポリエステル系樹脂の触媒失活効果を有するリン系化合物を好ましく用いることができ、例えば、株式会社ADEKA製「アデカスタブAX-71」が使用可能である。
逆に、TC2が160℃未満の場合は、結晶化速度が遅くなりすぎ、結晶化が遅いゆえに金型への張り付き等による離型不良が発生したり、突き出し時に変形が起こったりすることがある。また、成形時の圧力によりシボのより奥深くまで樹脂が入り込むことが容易になるため、金型内の樹脂の収縮時や離型の際にシボがずれたりすることでシボの深さが不均一になりやすくなり、良好なシボ外観を得ることが困難になってくる。本発明の無機強化熱可塑性ポリエステル樹脂組成物は、これらの成形時懸念点を鑑み、最適なTC2となるよう調整を実施したものであるため、金型温度が100℃以下でも良好な外観と成形性を得ることができる。
TC2は、163℃以上、177℃以下がより好ましく、165℃以上、175℃以下がさらに好ましい。
また、本発明では、サイドフィーダーを複数個所に設けることができる。上流のサイドフィーダーから供給したガラス繊維系強化材(F)の繊維長は、下流のサイドフィーダーから供給したガラス繊維系強化材(F)の繊維長よりも短くなるが、各サイドフィーダーへのガラス繊維系強化材(F)の供給量を変えることにより、その他の押出条件を変更することなく、組成物中の繊維長を所定範囲に調整することが容易になる。なお、元フィーダー(メインフィーダー)と1つのサイドフィーダーから供給する方法と比べて、上記方法の方が繊維長分布を制御しやすいため好ましい。
つまり、本発明の無機強化熱可塑性ポリエステル樹脂組成物の製造方法として、サイドフィーダーを複数個所有する二軸押出機を用い、同一種のガラス繊維系強化材(F)を複数のサイドフィーダーから分割して投入することが好ましい。この際、ガラス繊維系強化材(F)は、メインフィーダーから投入することなく、複数のサイドフィーダーからのみ投入することが好ましい。
0.1gのサンプルをフェノール/テトラクロロエタン(質量比6/4)の混合溶媒25mlに溶解し、ウベローデ粘度管を用いて30℃で測定した。(単位:dl/g)
(2)降温結晶化温度(TC2)
示差走査熱量計(DSC)を用い、窒素気流下で20℃/分の昇温速度で300℃まで昇温し、その温度で5分間保持したあと、10℃/分の速度で100℃まで降温させることにより得られるサーモグラムの結晶化ピークのトップ温度で求めた。
シリンダー温度275℃、金型温度90℃にて、18mm×180mm×2mmの短冊状成形品を射出成形により成形する際、充填時間が1秒になる射出速度範囲で成形(成形条件A)した成形品Aと充填時間が2.2秒になる射出速度範囲で成形(成形条件B)した成形品Bとの外観を、目視により観察した。なお保圧は75MPaとした。「○」、「△」であれば、特に問題の無いレベルである。
○:表面にガラス繊維等の浮きによる外観不良がなく、良好
△:一部(特に成形品の末端部分等)に、若干の外観不良が発生している
×:成形品全体に外観不良が発生している
上記(3)の条件で成形した成形品のシボ外観を、目視により観察した。シボは深さ15μmのナシ地状にシボ仕上げされた金型を用いた。「○」、「△」であれば、特に問題の無いレベルである。
○:表面にシボのずれによる外観不良が全くなく、良好
△:成形品のごく一部にシボのずれによる外観不良が発生しており、角度を変えて観察すると白く見えたりする部分が存在する
×:成形品に全体的にシボのずれによる外観不良が発生しており、角度を変えて観察すると白く見えたりする
上記(3)の条件で成形を実施する際、射出工程終了後の冷却時間を5秒に設定したときの離型性で判定を実施した(トータル成形サイクルは17秒)。「○」、「△」であれば、特に問題の無いレベルである。
○:離型も問題なく、連続成形が容易に可能である
△:数ショットに一回離型不良が発生するが、連続成形は可能
×:毎ショット離型不良が発生し、連続成形が不可能
上記(3)の条件で成形した成形品Aに発生する流動末端部のバリの最大値を顕微鏡を用いて測定した。
ISO-178に準じて測定した。試験片は、シリンダー温度265℃、金型温度90℃の条件で射出成形した。
(8)シャルピー衝撃強度
ISO-179に準じて測定した。試験片は、シリンダー温度265℃、金型温度90℃の条件で射出成形した。
無機強化熱可塑性ポリエステル樹脂組成物における残存ガラス繊維長を以下の方法で測定した。
ガラス繊維高充填材料ではガラス繊維同士の干渉が多く測定時にガラス繊維が破損しやすく正確な繊維長が求めにくいので、本発明ではガラス繊維長を正確に測定するため溶融混練して得られたペレットを650℃にて2時間強熱しガラス繊維を破損することなくガラス繊維を灰分として取り出し、得られたガラス繊維を水に浸し、分散したガラス繊維をプレパラート上に取り出し、無作為に選択した1000個以上のガラス繊維をデジタルマイクロスコープ(株式会社ハイロックス製KH-7700)で80倍にて観察し、数平均および重量平均の繊維長を求め、それぞれ、数平均繊維長、重量平均繊維長とした。なお、重量平均繊維長(Lw)は、円周率(π)、繊維長(Li)、密度(ρi)、繊維径(ri)を有する繊維の本数を(Ni)とすると、次式により算出できる。
Lw=Σ(Ni×π×ri2×Li2×ρi)/Σ(Ni×π×ri2×Li×ρi)
繊維径および密度が一定の場合は、Lwは次式により算出できる。
Lw=Σ(Ni×Li2)/Σ(Ni×Li)
ペレット状の樹脂組成物について、東洋精機製作所社製キャピログラフ1Bを用いて、ISO11443に準拠して、炉体温度270℃、キャピラリー[1mm(内径φ)×30mm(長さL)]を用い、剪断速度10sec-1にて溶融粘度を測定した。
ポリエステル樹脂の酸価;
ベンジルアルコール25mlにポリエステル樹脂0.5gを溶解し、水酸化ナトリウムの濃度0.01モル/lのベンジルアルコール溶液を使用して滴定した。指示薬はフェノールフタレイン0.10gをエタノール50mL及び水50mLの混合液に溶解したものを使用した。
樹脂組成物中の樹脂成分の酸価;
ベンジルアルコール25mlに樹脂組成物0.5gを溶解し、水酸化ナトリウムの濃度0.01モル/lのベンジルアルコール溶液を使用して滴定した。指示薬はフェノールフタレイン0.10gをエタノール50mL及び水50mLの混合液に溶解したものを使用した。上記「(9)数平均繊維長、重量平均繊維長」の測定の際、無機強化熱可塑性ポリエステル樹脂組成物の質量と灰分の質量を測っておき、樹脂組成物中に含まれる樹脂成分の質量当たりに換算した。
ペレットの生産を24時間連続で行った際のペレット生産中に発生したストランド切れ回数を下記基準で評価した。
〇:10回未満
×:10回以上
[ポリブチレンテレフタレート樹脂(A)]
(A1)ポリブチレンテレフタレート:東洋紡社製 還元粘度0.58dl/g、酸価24eq/ton
(A2)ポリブチレンテレフタレート:東洋紡社製 還元粘度0.58dl/g、酸価104eq/ton
(A3)ポリブチレンテレフタレート:東洋紡社製 還元粘度0.58dl/g、酸価4eq/ton
(A4)ポリブチレンテレフタレート:東洋紡社製 還元粘度0.58dl/g、酸価126eq/ton
[ポリエチレンテレフタレート樹脂(B)]
(B)ポリエチレンテレフタレート:東洋紡社製 還元粘度0.63dl/g、酸価20eq/ton
(C1)共重合ポリブチレンテレフタレート:TPA/IPA//1,4-BD=70/30//100(モル%)の組成比の共重合体、東洋紡社製、東洋紡バイロン(登録商標)の試作品、還元粘度0.73dl/g、酸価8eq/ton
(C2)共重合ポリブチレンテレフタレート:TPA/IPA//1,4-BD=45/55//100(モル%)の組成比の共重合体、東洋紡社製、東洋紡バイロン(登録商標)の試作品、還元粘度0.76dl/g、酸価7eq/ton
[共重合ポリエチレンテレフタレート樹脂(D)]
(D1)共重合ポリエチレンテレフタレート:TPA//EG/NPG=100//70/30(モル%)の組成比の共重合体、東洋紡社製、東洋紡バイロン(登録商標)の試作品、還元粘度0.83dl/g、酸価6eq/ton
(D2)共重合ポリエチレンテレフタレート:TPA/IPA//EG/NPG=50/50//50/50(モル%)の組成比の共重合体、東洋紡社製、東洋紡バイロン(登録商標)の試作品、還元粘度0.53dl/g、酸価10eq/ton
(略号はそれぞれ、TPA:テレフタル酸、IPA:イソフタル酸、1,4-BD:1,4-ブタンジオール、EG:エチレングリコール、NPG:ネオペンチルグリコールの各成分を示す。)
(E1)ポリカーボネート:住化スタイロンポリカーボネート社製、「カリバー301-40」、メルトボリュームレート(300℃、荷重1.2kg)40cm3/10min
(F1)扁平断面ガラス繊維:日東紡社製「CSG3PL830S」、偏平断面、長径と短径の比:2(短径10μm、長径20μm)、平均繊維長3mm
(F2)ガラス短繊維ミルドファイバー:セントラルグラスファイバー社製「EFH-100-31」、ミルドファイバー(シラン処理)、平均繊維長100μm、平均繊維径11μm
Claims (5)
- ポリブチレンテレフタレート樹脂(A)8~20質量部、ポリエチレンテレフタレート樹脂(B)1~7質量部、共重合ポリブチレンテレフタレート樹脂(C)1~12質量部、共重合ポリエチレンテレフタレート樹脂(D)5~12質量部、ポリカーボネート系樹脂(E)1~6質量部、ガラス繊維系強化材(F)50~70質量部及びエステル交換防止剤(G)0.05~2質量部を含有し、ここで、前記(A)、(B)、(C)、(D)、(E)及び(F)成分の合計が100質量部である無機強化熱可塑性ポリエステル樹脂組成物であって、
前記ガラス繊維系強化材(F)が、少なくとも繊維断面の長径と短径の比(長径/短径)が1.3~8である扁平断面ガラス繊維(F1)40~55質量部、繊維長30~150μmのガラス短繊維ミルドファイバー(F2)5~20質量部を含み、
無機強化熱可塑性ポリエステル樹脂組成物中のガラス繊維系強化材(F)の重量平均繊維長Lwが200~700μmであり、
270℃、せん断速度10sec-1での溶融粘度が0.6kPa・s以上、1.5kPa・s以下である無機強化熱可塑性ポリエステル樹脂組成物。 - 示差走査型熱量計(DSC)で求められる降温結晶化温度(TC2)が、160℃≦TC2<180℃の範囲にある請求項1に記載の無機強化熱可塑性ポリエステル樹脂組成物。
- 前記無機強化熱可塑性ポリエステル樹脂組成物の樹脂成分の酸価が5~50eq/tonであることを特徴とする請求項1または2に記載の無機強化熱可塑性ポリエステル樹脂組成物。
- 前記無機強化熱可塑性ポリエステル樹脂組成物中のガラス繊維系強化材(F)の数平均繊維長Lnと重量平均繊維長Lwとが、1.1≦Lw/Ln≦2.4を満たすことを特徴とする請求項1~3のいずれかに記載の無機強化熱可塑性ポリエステル樹脂組成物。
- サイドフィーダーを複数個所有する二軸押出機を用い、同一種のガラス繊維系強化材(F)を複数のサイドフィーダーから分割して投入することを特徴とする請求項1~4のいずれかに記載の無機強化熱可塑性ポリエステル樹脂組成物の製造方法。
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JP2000026743A (ja) * | 1998-07-15 | 2000-01-25 | Toray Ind Inc | 液晶性樹脂組成物 |
WO2012090411A1 (ja) * | 2010-12-28 | 2012-07-05 | 東レ株式会社 | 液晶性ポリエステル樹脂組成物及びその製造方法とそれからなる成形品 |
JP2016166276A (ja) * | 2015-03-09 | 2016-09-15 | 旭化成株式会社 | ポリアミド樹脂中空成形体 |
JP2017039878A (ja) * | 2015-08-21 | 2017-02-23 | 東洋紡株式会社 | 無機強化熱可塑性ポリエステル樹脂組成物 |
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2021
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- 2021-11-15 CN CN202180077266.4A patent/CN116438246A/zh active Pending
- 2021-11-15 US US18/037,633 patent/US20230407019A1/en active Pending
- 2021-11-15 MX MX2023005926A patent/MX2023005926A/es unknown
- 2021-11-15 JP JP2022515773A patent/JPWO2022107715A1/ja active Pending
- 2021-11-17 TW TW110142667A patent/TW202231780A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000026743A (ja) * | 1998-07-15 | 2000-01-25 | Toray Ind Inc | 液晶性樹脂組成物 |
WO2012090411A1 (ja) * | 2010-12-28 | 2012-07-05 | 東レ株式会社 | 液晶性ポリエステル樹脂組成物及びその製造方法とそれからなる成形品 |
JP2016166276A (ja) * | 2015-03-09 | 2016-09-15 | 旭化成株式会社 | ポリアミド樹脂中空成形体 |
JP2017039878A (ja) * | 2015-08-21 | 2017-02-23 | 東洋紡株式会社 | 無機強化熱可塑性ポリエステル樹脂組成物 |
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JPWO2022107715A1 (ja) | 2022-05-27 |
TW202231780A (zh) | 2022-08-16 |
US20230407019A1 (en) | 2023-12-21 |
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