JP2022109002A - Resin composition for sliding member, extrusion molded body, car member, and weather strip - Google Patents
Resin composition for sliding member, extrusion molded body, car member, and weather strip Download PDFInfo
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- JP2022109002A JP2022109002A JP2021004285A JP2021004285A JP2022109002A JP 2022109002 A JP2022109002 A JP 2022109002A JP 2021004285 A JP2021004285 A JP 2021004285A JP 2021004285 A JP2021004285 A JP 2021004285A JP 2022109002 A JP2022109002 A JP 2022109002A
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- resin composition
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- sliding members
- ethylene
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- 239000011342 resin composition Substances 0.000 title claims abstract description 75
- 238000001125 extrusion Methods 0.000 title abstract description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 51
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000005977 Ethylene Chemical group 0.000 claims abstract description 49
- 229920005989 resin Polymers 0.000 claims abstract description 49
- 239000011347 resin Substances 0.000 claims abstract description 49
- 239000000758 substrate Substances 0.000 claims abstract description 5
- -1 polyethylene Polymers 0.000 claims description 20
- 229920000573 polyethylene Polymers 0.000 claims description 20
- 229920005672 polyolefin resin Polymers 0.000 claims description 18
- 229920001155 polypropylene Polymers 0.000 claims description 17
- 150000001336 alkenes Chemical class 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 description 27
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 22
- 239000004743 Polypropylene Substances 0.000 description 16
- 229920001577 copolymer Polymers 0.000 description 12
- 238000000465 moulding Methods 0.000 description 12
- 239000003963 antioxidant agent Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 10
- 239000011521 glass Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 229920003355 Novatec® Polymers 0.000 description 9
- 230000003078 antioxidant effect Effects 0.000 description 9
- RLAWWYSOJDYHDC-BZSNNMDCSA-N lisinopril Chemical compound C([C@H](N[C@@H](CCCCN)C(=O)N1[C@@H](CCC1)C(O)=O)C(O)=O)CC1=CC=CC=C1 RLAWWYSOJDYHDC-BZSNNMDCSA-N 0.000 description 9
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 8
- 229920001971 elastomer Polymers 0.000 description 8
- 239000000806 elastomer Substances 0.000 description 8
- 229920001903 high density polyethylene Polymers 0.000 description 8
- 239000004700 high-density polyethylene Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 239000000945 filler Substances 0.000 description 6
- 239000000178 monomer Chemical group 0.000 description 6
- 239000004711 α-olefin Substances 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 229920001684 low density polyethylene Polymers 0.000 description 5
- 239000004702 low-density polyethylene Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 4
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 4
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 4
- 239000004594 Masterbatch (MB) Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 description 4
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 235000012438 extruded product Nutrition 0.000 description 3
- 229920001519 homopolymer Polymers 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 229920001179 medium density polyethylene Polymers 0.000 description 3
- 239000004701 medium-density polyethylene Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 3
- OJOWICOBYCXEKR-APPZFPTMSA-N (1S,4R)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound CC=C1C[C@@H]2C[C@@H]1C=C2 OJOWICOBYCXEKR-APPZFPTMSA-N 0.000 description 2
- PRBHEGAFLDMLAL-GQCTYLIASA-N (4e)-hexa-1,4-diene Chemical compound C\C=C\CC=C PRBHEGAFLDMLAL-GQCTYLIASA-N 0.000 description 2
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- XWJBRBSPAODJER-UHFFFAOYSA-N 1,7-octadiene Chemical compound C=CCCCCC=C XWJBRBSPAODJER-UHFFFAOYSA-N 0.000 description 2
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N 1-Heptene Chemical compound CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 2
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 229920000034 Plastomer Polymers 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- LPIQUOYDBNQMRZ-UHFFFAOYSA-N cyclopentene Chemical compound C1CC=CC1 LPIQUOYDBNQMRZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920001038 ethylene copolymer Polymers 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920001384 propylene homopolymer Polymers 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 1
- JAGYXYUAYDLKNO-GGWOSOGESA-N (2e,5e)-hepta-2,5-diene Chemical compound C\C=C\C\C=C\C JAGYXYUAYDLKNO-GGWOSOGESA-N 0.000 description 1
- PRBHEGAFLDMLAL-UHFFFAOYSA-N 1,5-Hexadiene Natural products CC=CCC=C PRBHEGAFLDMLAL-UHFFFAOYSA-N 0.000 description 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 125000004810 2-methylpropylene group Chemical group [H]C([H])([H])C([H])(C([H])([H])[*:2])C([H])([H])[*:1] 0.000 description 1
- ZLFBGRJUVSTOSZ-UHFFFAOYSA-N 3,6-dimethylocta-1,7-diene Chemical compound C=CC(C)CCC(C)C=C ZLFBGRJUVSTOSZ-UHFFFAOYSA-N 0.000 description 1
- RWISHMCXBGVLHG-UHFFFAOYSA-N 4,5-dimethylocta-1,7-diene Chemical compound C=CCC(C)C(C)CC=C RWISHMCXBGVLHG-UHFFFAOYSA-N 0.000 description 1
- INYHZQLKOKTDAI-UHFFFAOYSA-N 5-ethenylbicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(C=C)CC1C=C2 INYHZQLKOKTDAI-UHFFFAOYSA-N 0.000 description 1
- WTQBISBWKRKLIJ-UHFFFAOYSA-N 5-methylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C)CC1C=C2 WTQBISBWKRKLIJ-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 241000285023 Formosa Species 0.000 description 1
- 101000837308 Homo sapiens Testis-expressed protein 30 Proteins 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229920011250 Polypropylene Block Copolymer Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 102100028631 Testis-expressed protein 30 Human genes 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 description 1
- DSSYKIVIOFKYAU-UHFFFAOYSA-N camphor Chemical compound C1CC2(C)C(=O)CC1C2(C)C DSSYKIVIOFKYAU-UHFFFAOYSA-N 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- NLDGJRWPPOSWLC-UHFFFAOYSA-N deca-1,9-diene Chemical compound C=CCCCCCCC=C NLDGJRWPPOSWLC-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical group [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- PYGSKMBEVAICCR-UHFFFAOYSA-N hexa-1,5-diene Chemical compound C=CCCC=C PYGSKMBEVAICCR-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- LAQFLZHBVPULPL-UHFFFAOYSA-N methyl(phenyl)silicon Chemical compound C[Si]C1=CC=CC=C1 LAQFLZHBVPULPL-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- MAMCJGWPGQJKLS-UHFFFAOYSA-N nona-2,7-diene Chemical compound CC=CCCCC=CC MAMCJGWPGQJKLS-UHFFFAOYSA-N 0.000 description 1
- SJYNFBVQFBRSIB-UHFFFAOYSA-N norbornadiene Chemical compound C1=CC2C=CC1C2 SJYNFBVQFBRSIB-UHFFFAOYSA-N 0.000 description 1
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 1
- 150000002848 norbornenes Chemical class 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- QYZLKGVUSQXAMU-UHFFFAOYSA-N penta-1,4-diene Chemical compound C=CCC=C QYZLKGVUSQXAMU-UHFFFAOYSA-N 0.000 description 1
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 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
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 150000004291 polyenes Chemical class 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920005673 polypropylene based resin Polymers 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000001119 stannous chloride Substances 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Seal Device For Vehicle (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本発明は、摺動部材用樹脂組成物と、この摺動部材用樹脂組成物よりなる押出成形体、自動車用部品、及びウェザーストリップに関する。 TECHNICAL FIELD The present invention relates to a resin composition for sliding members, and an extruded product, an automobile part, and a weather strip made of the resin composition for sliding members.
自動車ドアの窓枠に取り付けられるウェザーストリップは、車内への雨、風、異物等の侵入防止のために設けられる自動車部品である。ウェザーストリップは、プロピレン系重合体等の樹脂よりなる基材部と、基材部の一部分に積層されるように設けられた摺動部を有し、この摺動部がガラス窓と接するように窓枠にシールされて用いられる。従って、摺動部を構成する摺動部材には、ガラス窓の開閉時にその円滑動作を妨げることのない摺動性が求められる。
摺動部材としては、一般に、オレフィン系樹脂成分に各種添加物を添加した組成物よりなるものが知られている。
A weatherstrip attached to a window frame of an automobile door is an automobile part provided to prevent rain, wind, foreign matter, etc. from entering the automobile. The weather strip has a base material made of a resin such as a propylene-based polymer, and a sliding part provided so as to be laminated on a part of the base material so that the sliding part is in contact with the glass window. It is used by being sealed to the window frame. Therefore, the sliding member that constitutes the sliding portion is required to have slidability that does not hinder the smooth operation when opening and closing the glass window.
As a sliding member, there is generally known one made of a composition obtained by adding various additives to an olefinic resin component.
摺動部材に摺動性を付与するための添加物の一つとして、超高分子量ポリエチレンを使用する方法が提案されている(特許文献1参照)。
また、オレフィン系樹脂成分にエチレン系樹脂を含有する場合に、そのエチレン系樹脂の一部を架橋させることにより、成形体表面に凹凸形状を形成することで、摺動性を付与する方法も知られている(特許文献2参照)。
As one of additives for imparting slidability to a sliding member, a method of using ultra-high molecular weight polyethylene has been proposed (see Patent Document 1).
In addition, when an ethylene resin is contained in the olefin resin component, a method of imparting slidability by cross-linking a part of the ethylene resin to form an uneven shape on the surface of the molded body is also known. (see Patent Document 2).
近年、車の走行音を低減させるために、ウェザーストリップを窓ガラスに強く押さえつけシール性を強化する工夫がされている。このような使用環境下においては、ウェザーストリップの摺動部材には、ガラスへの追従性を確保してガラス窓を十分にシールしつつも、ガラス窓に対して高荷重下であっても摺動する摺動性が求められる。 In recent years, in order to reduce the running noise of a car, it has been devised to press the weather strip strongly against the window glass to strengthen the sealing performance. In such a usage environment, the sliding member of the weatherstrip should be able to adhere to the glass and sufficiently seal the glass window, but at the same time, it should be able to slide against the glass window even under a high load. Sliding property to move is required.
特許文献1に記載されている超高分子量ポリエチレンを摺動性付与材として添加したものは、確かに摺動性は向上するが、超高分子量ポリエチレンは粉末状で、取り扱いが難しい。また、特許文献1には追従性については記載がなく、特許文献1に記載された技術は追従性と摺動性の両立について考慮されていない。 The addition of ultra-high molecular weight polyethylene as a slidability imparting material described in Patent Document 1 certainly improves slidability, but ultra-high molecular weight polyethylene is powdery and difficult to handle. Further, Patent Document 1 does not describe followability, and the technology described in Patent Document 1 does not consider compatibility between followability and slidability.
特許文献2に記載されているエラストマー組成物は、高荷重下での摺動性が十分でない。また、特許文献2には追従性については記載がなく、特許文献2に記載された技術は追従性と摺動性の両立について考慮されていない。 The elastomer composition described in Patent Document 2 does not have sufficient slidability under high load. Further, Patent Document 2 does not describe followability, and the technology described in Patent Document 2 does not consider compatibility between followability and slidability.
本発明の目的は、上記従来技術の課題を解決し、追従性と高荷重下での摺動性に優れる摺動部材用樹脂組成物と、この摺動部材用樹脂組成物よりなる押出成形体、自動車用部品、及びウェザーストリップを提供することにある。 An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a resin composition for sliding members which is excellent in followability and slidability under high load, and an extruded article made of this resin composition for sliding members. , automobile parts, and weather strips.
本発明者は、プロピレン単位とエチレン単位を含む非架橋のオレフィン系樹脂成分と、ポリオルガノシロキサンとを含有する摺動部材用樹脂組成物であって、プロピレン単位の含有率T1とエチレン単位の含有率T2の質量比T1/T2を0.30~0.70とした摺動部材用樹脂組成物が、追従性と高荷重下での摺動性に優れる押出成形体、自動車用部品、及びウェザーストリップを実現し得ることを見出し、本発明に至った。 The present inventor has developed a resin composition for a sliding member containing a non-crosslinked olefinic resin component containing propylene units and ethylene units, and polyorganosiloxane, wherein the propylene unit content T1 and the ethylene unit content Extruded articles, automobile parts, and weathers, which are excellent in followability and slidability under high load, are produced by the resin composition for sliding members in which the mass ratio T1/T2 of the ratio T2 is 0.30 to 0.70. The inventors have found that a strip can be realized and have arrived at the present invention.
即ち、本発明の要旨は以下の通りである。 That is, the gist of the present invention is as follows.
[1] プロピレン単位とエチレン単位を含む非架橋のオレフィン系樹脂成分と、ポリオルガノシロキサンとを含有する摺動部材用樹脂組成物であって、該オレフィン系樹脂成分におけるプロピレン単位の含有率T1(質量%)とエチレン単位の含有率T2(質量%)の比T1/T2が0.30~0.70である、摺動部材用樹脂組成物。 [1] A resin composition for a sliding member containing a non-crosslinked olefinic resin component containing propylene units and ethylene units, and polyorganosiloxane, wherein the content of propylene units in the olefinic resin component is T1 ( %) to the ethylene unit content T2 (% by mass), wherein the ratio T1/T2 is from 0.30 to 0.70.
[2] DuroD硬度(ISO 868)が40以上55以下である、[1]に記載の摺動部材用樹脂組成物。 [2] The resin composition for sliding members according to [1], which has a DuroD hardness (ISO 868) of 40 or more and 55 or less.
[3] JIS K7210の規格に準拠した方法で測定温度230℃、測定荷重21.2Nで測定したメルトフローレートが0.5/10分以上25g/10分以下である、[1]又は[2]に記載の摺動部材用樹脂組成物。 [3] A melt flow rate of 0.5/10 minutes or more and 25 g/10 minutes or less measured at a measurement temperature of 230° C. and a measurement load of 21.2 N in accordance with the JIS K7210 standard, [1] or [2] ] The resin composition for sliding members as described in .
[4] 前記オレフィン系樹脂成分100質量部に対して前記ポリオルガノシロキサンを5~15質量部含有する、[1]~[3]のいずれかに記載の摺動部材用樹脂組成物。 [4] The resin composition for sliding members according to any one of [1] to [3], which contains 5 to 15 parts by mass of the polyorganosiloxane with respect to 100 parts by mass of the olefinic resin component.
[5] 前記オレフィン系樹脂成分が下記成分(A)と成分(B)を含有する、[1]~[4]のいずれかに記載の摺動部材用樹脂組成物。
成分(A):プロピレン系重合体
成分(B):エチレン系重合体
[5] The resin composition for sliding members according to any one of [1] to [4], wherein the olefinic resin component contains the following component (A) and component (B).
Component (A): Propylene polymer Component (B): Ethylene polymer
[6] 前記オレフィン系樹脂成分100質量%のうち、前記成分(A)の含有率が25~60質量%であり、前記成分(B)の含有率が40~75質量%である、[5]に記載の摺動部材用樹脂組成物。 [6] Among 100% by mass of the olefin resin component, the content of component (A) is 25 to 60% by mass, and the content of component (B) is 40 to 75% by mass. ] The resin composition for sliding members as described in .
[7] 前記成分(B)が密度0.91~0.97g/cm3のポリエチレンを含む、[5]又は[6]に記載の摺動部材用樹脂組成物。 [7] The resin composition for sliding members according to [5] or [6], wherein the component (B) contains polyethylene having a density of 0.91 to 0.97 g/cm 3 .
[8] [1]~[7]のいずれかに記載の摺動部材用樹脂組成物の押出成形体。 [8] An extruded body of the resin composition for sliding members according to any one of [1] to [7].
[9] [8]の押出成形体を備えた自動車部品。 [9] Automobile parts comprising the extruded body of [8].
[10] 基材と[1]~[7]のいずれかに記載の摺動部材用樹脂組成物よりなる摺動部材とを具備するウェザーストリップ。 [10] A weatherstrip comprising a substrate and a sliding member made of the resin composition for sliding members according to any one of [1] to [7].
本発明によれば、追従性と高荷重下での摺動性に優れる摺動部材用樹脂組成物と、この摺動部材用樹脂組成物よりなる押出成形体、自動車用部品、及びウェザーストリップを提供することができる。 According to the present invention, there are provided a resin composition for a sliding member that is excellent in followability and slidability under a high load, and an extruded product, an automobile part, and a weather strip made of the resin composition for a sliding member. can provide.
本発明の摺動部材用樹脂組成物及び押出成形体は、ガラスに対する優れた追従性と高荷重下での摺動性から、自動車用シール材、建材用シール材として有用である。特に自動車用ウェザーストリップ等の自動車部品として有用である。 INDUSTRIAL APPLICABILITY The resin composition for sliding members and the extruded product of the present invention are useful as sealing materials for automobiles and sealing materials for building materials because of their excellent conformability to glass and slidability under high load. It is particularly useful as automotive parts such as automotive weather strips.
以下に本発明を詳細に説明する。本発明は以下の説明に限定されるものではなく、本発明の要旨を逸脱しない範囲において、任意に変形して実施することができる。
本明細書において、「~」を用いてその前後に数値又は物性値を挟んで表現する場合、その前後の値を含むものとして用いる。
The present invention will be described in detail below. The present invention is not limited to the following description, and can be arbitrarily modified without departing from the gist of the present invention.
In this specification, when a numerical value or a physical property value is sandwiched before and after the "~", it is used to include the values before and after it.
〔摺動部材用樹脂組成物〕
本発明の摺動部材用樹脂組成物は、プロピレン単位とエチレン単位を含む非架橋のオレフィン系樹脂成分と、ポリオルガノシロキサンとを含有する摺動部材用樹脂組成物であって、オレフィン系樹脂成分におけるプロピレン単位の含有率T1(質量%)とエチレン単位の含有率T2(質量%)の比T1/T2(以下、単に「T1/T2」と称す場合がある。)が0.30~0.70であることを特徴とする。このT1/T2は、好ましくは0.35~0.70であり、より好ましくは0.35~0.68である。T1/T2を上記範囲とすることで、摺動部材に求められるガラス窓に対する追従性と高荷重下での摺動性をより高水準で両立することができる。
[Resin composition for sliding member]
The resin composition for sliding members of the present invention is a resin composition for sliding members containing a non-crosslinked olefinic resin component containing propylene units and ethylene units, and polyorganosiloxane, wherein the olefinic resin component is The ratio T1/T2 of the propylene unit content T1 (mass%) and the ethylene unit content T2 (mass%) (hereinafter sometimes simply referred to as "T1/T2") is 0.30 to 0.3 70. This T1/T2 is preferably 0.35 to 0.70, more preferably 0.35 to 0.68. By setting T1/T2 within the above range, it is possible to achieve a higher level of both followability to the glass window and slidability under high load, which are required for the sliding member.
[メカニズム]
本発明の摺動部材用樹脂組成物が前記した効果を奏する理由の詳細は定かではないが、以下の通り推定される。
通常、ポリオルガノシロキサンはオレフィン系樹脂成分中での分散性が悪く、オレフィン系樹脂成分とポリオルガノシロキサンを含有する樹脂組成物を用いて成形体を成形する際に、ポリオルガノシロキサンが成形体の表面側に移動しやすい傾向があり、結果として、成形体の表層にポリオルガノシロキサンが偏在してしまい、摺動部材として使用中に表層に存在するポリオルガノシロキサンが摺動部材から系外に排出されてしまう。そのため、成形体として所望の摺動性が得られない。
[mechanism]
Although the details of the reason why the resin composition for sliding members of the present invention exhibits the above effects are not clear, the reason is presumed as follows.
Generally, polyorganosiloxane has poor dispersibility in an olefinic resin component, and when molding a molded body using a resin composition containing an olefinic resin component and polyorganosiloxane, the polyorganosiloxane is As a result, the polyorganosiloxane is unevenly distributed on the surface layer of the molded body, and the polyorganosiloxane present on the surface layer is discharged from the sliding member to the outside of the system during use as a sliding member. It will be done. Therefore, desired slidability cannot be obtained as a molded article.
一方で、プロピレン単位とエチレン単位を含む非架橋のオレフィン系樹脂成分と、ポリオルガノシロキサンを含有する樹脂組成物において、プロピレン単位の含有率T1(質量%)とエチレン単位の含有率T2(質量%)の比T1/T2を0.30~0.70とすると、ポリエチレンとポリプロピレンの共連続構造が形成され、この構造体内にポリオルガノシロキサンが偏在し得る界面が大量に形成されるように設計することができる。このような共連続構造を有する樹脂組成物を用いた成形体では、繰り返しの摺動によってポリオルガノシロキサンが、成形体内から共連続構造の界面を伝って徐々に摺動面に染み出すようになり、優れた摺動性を得ることができると考えられる。 On the other hand, in the resin composition containing a non-crosslinked olefin resin component containing propylene units and ethylene units and polyorganosiloxane, the content of propylene units T1 (mass%) and the content of ethylene units T2 (mass%) ) is 0.30 to 0.70, a co-continuous structure of polyethylene and polypropylene is formed, and a large amount of interfaces in which polyorganosiloxane can be unevenly distributed are formed in this structure. be able to. In a molded body using a resin composition having such a co-continuous structure, repeated sliding causes polyorganosiloxane to gradually exude from the molded body to the sliding surface along the interface of the co-continuous structure. , it is considered that excellent slidability can be obtained.
[摺動部材用樹脂組成物の物性]
<DuroD硬度>
本発明の摺動部材用樹脂組成物は、ISO 868規格を参考に測定されたDuroD硬度が40~55であることが好ましい。DuroD硬度が40以上であることにより、摺動性に優れたものとなる。本発明の摺動部材用樹脂組成物のDuroD硬度は、好ましくは45以上である。一方、DuroD硬度が55以下であることにより、追従性に優れたものとなる。本発明の摺動部材用樹脂組成物のDuroD硬度は、好ましくは53以下である。特にDuroD硬度が45~53の範囲にあると高荷重下での摺動性及び追従性のバランスに一層優れた摺動部材を得ることができる。
[Physical properties of resin composition for sliding member]
<Duro D hardness>
The resin composition for sliding members of the present invention preferably has a DuroD hardness of 40 to 55 as measured with reference to the ISO 868 standard. When the DuroD hardness is 40 or more, the slidability is excellent. The DuroD hardness of the resin composition for sliding members of the present invention is preferably 45 or more. On the other hand, when the DuroD hardness is 55 or less, the followability is excellent. The DuroD hardness of the resin composition for sliding members of the present invention is preferably 53 or less. In particular, when the DuroD hardness is in the range of 45 to 53, it is possible to obtain a sliding member having a better balance between slidability and followability under high load.
摺動部材用樹脂組成物のDuroD硬度は、摺動部材用樹脂組成物中の曲げ弾性率(JIS K7171)1000MPa以上、例えば1000~2300MPaの樹脂成分の含有率C1(質量%)と、曲げ弾性率(JIS K7171)1000MPa未満、例えば20~950MPaの樹脂成分の含有率C2(質量%)を制御することで調整できる。具体的にはC1/C2を1.5~5.0の範囲内に制御することで所望の硬度が得られやすくなる。上記した曲げ弾性率1000MPa以上の樹脂成分、曲げ弾性率1000MPa未満の樹脂成分は、後に説明する成分(A)、成分(B)の中から適宜選んで使用することができる。 The DuroD hardness of the resin composition for sliding members is defined by the content C1 (% by mass) of the resin component having a bending elastic modulus (JIS K7171) of 1000 MPa or more, for example, 1000 to 2300 MPa in the resin composition for sliding members, and the bending elasticity. It can be adjusted by controlling the content C2 (% by mass) of the resin component with a rate (JIS K7171) of less than 1000 MPa, for example, 20 to 950 MPa. Specifically, controlling C1/C2 within the range of 1.5 to 5.0 makes it easier to obtain the desired hardness. The resin component having a flexural modulus of 1000 MPa or more and the resin component having a flexural modulus of less than 1000 MPa can be appropriately selected from component (A) and component (B) to be used later.
<メルトフローレート>
本発明の摺動部材用樹脂組成物は、JIS K7210の規格を参考に測定温度230℃、測定荷重21.2Nで測定したメルトフローレート(MFR)が0.5g/10分以上であることが、成形機への負荷軽減の観点から好ましく、より好ましくは0.7g/10分以上、更に好ましくは1g/10分以上である。一方、成形時の賦形性の観点から、本発明の摺動部材用樹脂組成物のメルトフローレート(MFR)は、25g/10分以下が好ましく、24g/10分以下がより好ましく、23g/10分以下が更に好ましい。
<Melt flow rate>
The resin composition for sliding members of the present invention has a melt flow rate (MFR) of 0.5 g/10 minutes or more measured at a measurement temperature of 230° C. and a measurement load of 21.2 N with reference to the JIS K7210 standard. , preferably from the viewpoint of reducing the load on the molding machine, more preferably 0.7 g/10 minutes or more, still more preferably 1 g/10 minutes or more. On the other hand, from the viewpoint of formability during molding, the melt flow rate (MFR) of the resin composition for sliding members of the present invention is preferably 25 g/10 minutes or less, more preferably 24 g/10 minutes or less, and 23 g/10 minutes or less. More preferably 10 minutes or less.
[オレフィン系樹脂成分]
本発明の摺動部材用樹脂組成物はプロピレン単位とエチレン単位を含む非架橋のオレフィン系樹脂成分を含有する。本発明の摺動部材用樹脂組成物は、摺動部材用樹脂組成物としてプロピレン単位の含有率T1(質量%)とエチレン単位の含有率T2(質量%)の比T1/T2が0.30~0.70となるよう、オレフィン系樹脂成分を含有することが好ましい。
[Olefin resin component]
The resin composition for sliding members of the present invention contains a non-crosslinked olefinic resin component containing propylene units and ethylene units. In the resin composition for sliding members of the present invention, the ratio T1/T2 of the propylene unit content T1 (% by mass) and the ethylene unit content T2 (% by mass) is 0.30. It is preferable to contain an olefin-based resin component so that the value becomes 0.70.
オレフィン系樹脂成分は、プロピレン単位とエチレン単位を含む非架橋のオレフィン系樹脂成分であれば特に限定されないが、上記したT1/T2を制御しやすい観点から、本発明に係るオレフィン系樹脂成分は、下記成分(A)と成分(B)を含有することが好ましい。これらの成分(A)及び成分(B)の詳細については後述する。
成分(A):プロピレン系重合体
成分(B):エチレン系重合体
The olefin-based resin component is not particularly limited as long as it is a non-crosslinked olefin-based resin component containing propylene units and ethylene units. It is preferable to contain the following component (A) and component (B). Details of these components (A) and (B) will be described later.
Component (A): Propylene polymer Component (B): Ethylene polymer
上記の成分(A)と成分(B)とを含有するオレフィン系樹脂成分におけるプロピレン単位の含有率T1とエチレン単位の含有率T2は、例えば、以下のようにして求められる。
成分(A)として、成分(A-1)、成分(A-2)……………成分(A-n)を含み、成分(B)として、成分(B-1)、成分(B-2)……………成分(B-n)を含むオレフィン系樹脂成分において、各成分のオレフィン系樹脂成分100質量%の含有率(質量%)、各々の成分中のプロピレン単位の含有率(質量%)、エチレン単位の含有率(質量%)を、
成分(A-1)のオレフィン系樹脂成分中の含有率:M(A-1)質量%
成分(A-2)のオレフィン系樹脂成分中の含有率:M(A-2)質量%
: :
成分(A-n)のオレフィン系樹脂成分中の含有率:M(A-n)質量%
成分(B-1)のオレフィン系樹脂成分中の含有率:M(B-1)質量%
成分(B-2)のオレフィン系樹脂成分中の含有率:M(B-2)質量%
: :
成分(B-n)のオレフィン系樹脂成分中の含有率:M(B-n)質量%
成分(A-1)中のプロピレン単位の含有率:P(A-1)質量%
成分(A-2)中のプロピレン単位の含有率:P(A-2)質量%
: :
成分(A-n)中のプロピレン単位の含有率:P(A-n)質量%
成分(A-1)中のエチレン単位の含有率:E(A-1)質量%
成分(A-2)中のエチレン単位の含有率:E(A-2)質量%
: :
成分(A-n)中のエチレン単位の含有率:E(A-n)質量%
成分(B-1)中のプロピレン単位の含有率:P(B-1)質量%
成分(B-2)中のプロピレン単位の含有率:P(B-2)質量%
: :
成分(B-n)中のプロピレン単位の含有率:P(B-n)質量%
成分(B-1)中のエチレン単位の含有率:E(B-1)質量%
成分(B-2)中のエチレン単位の含有率:E(B-2)質量%
: :
成分(B-n)中のエチレン単位の含有率:E(B-n)質量%
とすると、オレフィン系樹脂成分としてのプロピレン単位の含有率T1とエチレン単位の含有率T2は以下の通り算出される。
T1={M(A-1)×P(A-1)+M(A-2)×P(A-2)+……………+M(A-n)×P(A-n)+M(B-1)×P(B-1)+M(B-2)×P(B-2)……………+M(B-n)×P(B-n)}/100
T2={M(A-1)×E(A-1)+M(A-2)×E(A-2)+……………+M(A-n)×E(A-n)+M(B-1)×E(B-1)+M(B-2)×E(B-2)……………+M(B-n)×E(B-n)}/100
The propylene unit content T1 and the ethylene unit content T2 in the olefin resin component containing the component (A) and the component (B) are obtained, for example, as follows.
Component (A) includes component (A-1), component (A-2) ………… component (An), and component (B) includes component (B-1), component (B- 2) In the olefinic resin component containing the component (Bn), the content (% by mass) of 100% by mass of the olefinic resin component of each component, the content of propylene units in each component ( mass%), the content of ethylene units (mass%),
Content of component (A-1) in olefin resin component: M (A-1) % by mass
Content of component (A-2) in olefin resin component: M (A-2) % by mass
: :
Content of component (An) in olefin resin component: M (An) mass %
Content of component (B-1) in olefin resin component: M (B-1) % by mass
Content of component (B-2) in olefin resin component: M (B-2) % by mass
: :
Content of component (Bn) in olefin resin component: M (Bn) % by mass
Propylene unit content in component (A-1): P(A-1)% by mass
Content of propylene units in component (A-2): P(A-2)% by mass
: :
Content of propylene units in component (An): P (An) mass %
Ethylene unit content in component (A-1): E (A-1)% by mass
Ethylene unit content in component (A-2): E (A-2)% by mass
: :
Ethylene unit content in component (An): E (An) mass%
Propylene unit content in component (B-1): P (B-1) % by mass
Content of propylene units in component (B-2): P(B-2)% by mass
: :
Content of propylene units in component (Bn): P(Bn)% by mass
Ethylene unit content in component (B-1): E (B-1) % by mass
Ethylene unit content in component (B-2): E (B-2) mass%
: :
Ethylene unit content in component (Bn): E (Bn) mass %
Then, the propylene unit content T1 and the ethylene unit content T2 as the olefinic resin component are calculated as follows.
T1={M(A-1)×P(A-1)+M(A-2)×P(A-2)+…………+M(A-n)×P(A-n)+M( B-1)×P(B-1)+M(B-2)×P(B-2)…………+M(B-n)×P(B-n)}/100
T2={M(A-1)×E(A-1)+M(A-2)×E(A-2)+…………+M(An)×E(An)+M( B-1)×E(B-1)+M(B-2)×E(B-2)…………+M(B-n)×E(B-n)}/100
前述の通り、本発明の摺動部材用樹脂組成物におけるT1/T2は0.30~0.70、好ましくは0.35~0.70、より好ましくは0.35~0.68であるので、本発明の摺動部材用樹脂組成物に含まれるオレフィン系樹脂成分のT1/T2は、0.30~0.70、特に0.35~0.70、とりわけ0.35~0.68であることが好ましい。 As described above, T1/T2 in the resin composition for sliding members of the present invention is 0.30 to 0.70, preferably 0.35 to 0.70, more preferably 0.35 to 0.68. , T1/T2 of the olefin resin component contained in the resin composition for sliding members of the present invention is 0.30 to 0.70, particularly 0.35 to 0.70, and particularly 0.35 to 0.68. Preferably.
<成分(A):プロピレン系重合体>
オレフィン系樹脂成分に用いられる成分(A)のプロピレン系重合体は、特に限定されず、プロピレン単独重合体、プロピレン系共重合体(プロピレン単位と他の単量体単位とのブロック共重合体又はランダム共重合体)等、いずれであっても使用することができる。
ここで、プロピレン系共重合体とは、プロピレン単位の含有率が50質量%以上であるものを意味する。
<Component (A): Propylene-based polymer>
The propylene-based polymer of component (A) used in the olefin-based resin component is not particularly limited, and may be a propylene homopolymer, a propylene-based copolymer (a block copolymer of propylene units and other monomer units, or random copolymer) and the like can be used.
Here, the propylene-based copolymer means a copolymer having a propylene unit content of 50% by mass or more.
成分(A)のプロピレン系重合体がプロピレン系共重合体である場合、プロピレンと共重合する他の単量体としては、エチレン、1-ブテン、2-メチルプロピレン、1-ペンテン、3-メチル-1-ブテン、1-ヘキセン、4-メチル-1-ペンテン、1-オクテン、1-デセン等の炭素数2又は4~12のα-オレフィン;シクロペンテン、ノルボルネン、テトラシクロ[6,2,11,8,13,6]-4-ドデセン等の環状オレフィン;5-メチレン-2-ノルボルネン、5-エチリデン-2-ノルボルネン等のノルボルネン;1,4-ヘキサジエン、メチル-1,4-ヘキサジエン、7-メチル-1,6-オクタジエン等のジエン;塩化ビニル、塩化ビニリデン、アクリロニトリル、酢酸ビニル、アクリル酸、メタクリル酸、マレイン酸、アクリル酸エチル、アクリル酸ブチル、メタクリル酸メチル、無水マレイン酸、スチレン、メチルスチレン、ビニルトルエン、ジビニルベンゼン等のビニル単量体等が挙げられるが、これらに特に限定されない。これらの他の共重合成分は、1種を単独で用いてもよく、2種以上を併用してもよい。 When the propylene-based polymer of component (A) is a propylene-based copolymer, other monomers to be copolymerized with propylene include ethylene, 1-butene, 2-methylpropylene, 1-pentene, 3-methyl -α-olefins having 2 or 4 to 12 carbon atoms such as 1-butene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decene; cyclopentene, norbornene, tetracyclo[6,2,11, Cyclic olefins such as 8,13,6]-4-dodecene; norbornenes such as 5-methylene-2-norbornene and 5-ethylidene-2-norbornene; 1,4-hexadiene, methyl-1,4-hexadiene, 7- Dienes such as methyl-1,6-octadiene; vinyl chloride, vinylidene chloride, acrylonitrile, vinyl acetate, acrylic acid, methacrylic acid, maleic acid, ethyl acrylate, butyl acrylate, methyl methacrylate, maleic anhydride, styrene, methyl Vinyl monomers such as styrene, vinyltoluene, and divinylbenzene may be used, but are not particularly limited thereto. These other copolymerization components may be used singly or in combination of two or more.
成分(A)のポリプロピレン系重合体は、メルトフローレート(MFR;ASTM D 1238、230℃、荷重21.2N)が0.3~26g/10分であることが好ましく、より好ましくは0.3~15g/10分である。このようなMFRを有する成分(A)のポリプロピレン系重合体を使用することにより、良好な成形性と優れた外観を確保することができる。 The polypropylene-based polymer of component (A) preferably has a melt flow rate (MFR; ASTM D 1238, 230° C., load 21.2 N) of 0.3 to 26 g/10 minutes, more preferably 0.3. ~15 g/10 min. Good moldability and excellent appearance can be ensured by using the component (A) polypropylene polymer having such MFR.
また、成分(A)のプロピレン系重合体は、密度(JIS K7112)が0.85~0.92g/cm3の範囲内にあることが好ましい。 Further, the propylene-based polymer of component (A) preferably has a density (JIS K7112) within the range of 0.85 to 0.92 g/cm 3 .
成分(A)のプロピレン系重合体は、公知の製造方法で得ることができる。その製造方法は、例えば特開昭50-108385号公報、特開昭50-126590号公報、特開昭51-20297号公報、特開昭51-28189号公報、特開昭52-151691号公報に詳細に開示されており、本発明においてもこれらに記載されている技術を利用することができる。 The propylene-based polymer of component (A) can be obtained by a known production method. The manufacturing method, for example, JP-A-50-108385, JP-A-50-126590, JP-A-51-20297, JP-A-51-28189, JP-A-52-151691 , and the techniques described therein can be used in the present invention.
また、成分(A)のプロピレン系重合体は、市販のものを用いてもよい。成分(A)の市販品としては、例えば、プライムポリマー社製のPRIME Polypro(登録商標)、住友化学社製の住友ノーブレン(登録商標)、サンアロマー社製のポリプロピレンブロックコポリマー、日本ポリプロ社製のノバテック(登録商標)PP、三井化学社製のタフマー(登録商標)、ウェイマックス(WAYMAX(登録商標))、LyondellBasell社製のMoplen(登録商標)、ExxonMobil社製のExxonMobil PP、ダウ・ケミカル社製のバーシファイ(登録商標)、Formosa Plastics社製のFormolene(登録商標)、Borealis社製のBorealis PP、LG Chemical社製のSEETEC PP、A.Schulman社製のASI POLYPROPYLENE、INEOS Olefins&Polymers社製のINEOS PP、Braskem社製のBraskem PP、SAMSUNG TOTAL PETROCHEMICALS社製のSumsung Total、Sabic社製のSabic(登録商標)PP、TOTAL PETROCHEMICALS社製のTOTAL PETROCHEMICALS Polypropylene、SK社製のYUPLENE(登録商標)が挙げられる。 A commercially available propylene polymer may be used as the component (A). Examples of commercially available products of component (A) include PRIME Polypro (registered trademark) manufactured by Prime Polymer Co., Ltd., Sumitomo Noblen (registered trademark) manufactured by Sumitomo Chemical Co., Ltd., polypropylene block copolymer manufactured by SunAllomer Co., Ltd., and Novatec manufactured by Nippon Polypro Co., Ltd. (registered trademark) PP, Toughmar (registered trademark) manufactured by Mitsui Chemicals, WAYMAX (registered trademark), Moplen (registered trademark) manufactured by LyondellBasell, ExxonMobil PP manufactured by ExxonMobil, Dow Chemical Versify®, Formolene® from Formosa Plastics, Borealis PP from Borealis, SEETEC PP from LG Chemical, A.I. Schulman社製のASI POLYPROPYLENE、INEOS Olefins&Polymers社製のINEOS PP、Braskem社製のBraskem PP、SAMSUNG TOTAL PETROCHEMICALS社製のSumsung Total、Sabic社製のSabic(登録商標)PP、TOTAL PETROCHEMICALS社製のTOTAL PETROCHEMICALS Polypropylene , and YUPLENE (registered trademark) manufactured by SK.
上記の成分(A)のプロピレン系重合体は、1種のみを用いてもよく、組成や物性の異なるものを2種以上組み合わせて用いてもよい。 The propylene-based polymer of component (A) may be used alone, or may be used in combination of two or more with different compositions and physical properties.
[成分(B):エチレン系重合体]
オレフィン系樹脂成分に用いられる成分(B)のエチレン系重合体は、特に限定されず、エチレン単独重合体、エチレン系共重合体(エチレン単位と他の単量体単位とのブロック共重合体又はランダム共重合体)等、いずれであっても使用することができる。
ここで、エチレン系共重合体は、エチレン単位の含有率が50質量%以上であるものを意味する。
[Component (B): ethylene polymer]
The ethylene-based polymer of component (B) used in the olefin-based resin component is not particularly limited, and may be an ethylene homopolymer, an ethylene-based copolymer (a block copolymer of ethylene units and other monomer units, or random copolymer) and the like can be used.
Here, the ethylene-based copolymer means one having an ethylene unit content of 50% by mass or more.
成分(B)のエチレン系重合体がエチレン系共重合体である場合、エチレンと共重合する他の単量体としては、プロピレン、1-ブテン、1-ペンテン、1-ヘキセン、1-オクテン、4-メチル-1-ペンテン、1-ヘプテン等の炭素数3~20のα-オレフィン;1,4-ペンタジエン、1,4-ヘキサジエン、1,5-ヘキサジエン、1,7-オクタジエン、1,9-デカンジエン、3,6-ジメチル-1,7-オクタジエン、4,5-ジメチル-1,7-オクタジエン、5-メチル-1,8-ナノジエン、ジシクロペンタジエン、5-エチリデン-2-ノルボルネン、5-ビニル-2-ノルボルネン、2,5-ノルボルナジエン、4-エチリデン-8-メチル-1,7-ナノジエン等の非共役ポリエンが挙げられるが、これらに特に限定されない。これらの他の共重合成分は、1種を単独で用いてもよく、2種以上を併用してもよい。 When the ethylene-based polymer of component (B) is an ethylene-based copolymer, other monomers to be copolymerized with ethylene include propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, α-olefins having 3 to 20 carbon atoms such as 4-methyl-1-pentene and 1-heptene; 1,4-pentadiene, 1,4-hexadiene, 1,5-hexadiene, 1,7-octadiene, 1,9 -decanediene, 3,6-dimethyl-1,7-octadiene, 4,5-dimethyl-1,7-octadiene, 5-methyl-1,8-nanodiene, dicyclopentadiene, 5-ethylidene-2-norbornene, 5 -vinyl-2-norbornene, 2,5-norbornadiene, 4-ethylidene-8-methyl-1,7-nanodiene, and other non-conjugated polyenes, but are not particularly limited thereto. These other copolymer components may be used singly or in combination of two or more.
エチレン系重合体としては、エチレン単独重合体、エチレン・α-オレフィン共重合体が好ましい。 As the ethylene polymer, an ethylene homopolymer and an ethylene/α-olefin copolymer are preferable.
エチレン系重合体は、密度(JIS K6922)が0.91~0.97g/cm3であることが好ましい。また、成分(B)の少なくとも一部として、密度0.94~0.97g/cm3のポリエチレンを含有することで、摺動部材用樹脂組成物として優れた摺動性と摩耗性が得られやすくなる傾向がある。 The ethylene polymer preferably has a density (JIS K6922) of 0.91 to 0.97 g/cm 3 . Further, by containing polyethylene having a density of 0.94 to 0.97 g/cm 3 as at least a part of the component (B), excellent slidability and abrasion resistance can be obtained as a resin composition for sliding members. tends to be easier.
エチレン系重合体は、密度の観点で、高密度ポリエチレン(HDPE)、中密度ポリエチレン(MDPE)、低密度ポリエチレン(L-LDPE、LDPE)、エチレンプラストマー、エチレンエラストマーに分類できる。 Ethylene-based polymers can be classified into high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (L-LDPE, LDPE), ethylene plastomers, and ethylene elastomers in terms of density.
なお、本明細書中、高密度ポリエチレンは密度0.94g/cm3以上(0.98g/cm3未満)のポリエチレン系重合体、中密度ポリエチレンは密度0.93g/cm3以上0.94g/cm3未満のポリエチレン系重合体、低密度ポリエチレンは密度0.91g/cm3以上~0.93g/cm3未満のポリエチレン系重合体、エチレンプラストマーは密度0.89g/cm3以上0.91g/cm3未満のポリエチレン系重合体、エチレンエレストマーは密度0.89g/cm3未満(0.85g/cm3以上)のポリエチレン系重合体を意味する。この中でも、摺動性の観点から高密度ポリエチレン(HDPE)が好ましい。 In this specification, high-density polyethylene is a polyethylene-based polymer having a density of 0.94 g/cm 3 or more (less than 0.98 g/cm 3 ), and medium-density polyethylene is a density of 0.93 g/cm 3 or more and 0.94 g/cm 3 or more. cm 3 or less, low-density polyethylene is a polyethylene polymer with a density of 0.91 g/cm 3 or more and less than 0.93 g/cm 3 , ethylene plastomer is a density of 0.89 g/cm 3 or more and 0.91 g A polyethylene polymer having a density of less than 0.85 g/cm 3 and an ethylene elastomer mean a polyethylene polymer having a density of less than 0.89 g/cm 3 (0.85 g/cm 3 or more). Among these, high-density polyethylene (HDPE) is preferable from the viewpoint of slidability.
本発明においては、エチレン系重合体が、非架橋状態で存在するため、エチレン系重合体が架橋状態で存在する場合と比較し、共連続構造を維持しやすく、所望の摺動性を得ることができる。 In the present invention, since the ethylene polymer exists in a non-crosslinked state, it is easier to maintain the co-continuous structure and obtain the desired slidability compared to the case where the ethylene polymer exists in a crosslinked state. can be done.
成分(B)のエチレン系重合体は、メルトフローレート(MFR;ASTM D1238、230℃、荷重21.2N)が0.1~13g/10分であることが好ましく、より好ましくは0.1~12g/10分である。このようなMFRを有する成分(B)のエチレン系重合体を使用することにより、ポリプロピレン系樹脂材料より成形された別部材と融着しやすくなり、ウェザーストリップ用摺動部材等の用途に好適に用いることができる。 The ethylene polymer of component (B) preferably has a melt flow rate (MFR; ASTM D1238, 230° C., load 21.2 N) of 0.1 to 13 g/10 min, more preferably 0.1 to 12 g/10 minutes. By using the ethylene-based polymer of component (B) having such an MFR, it becomes easier to fuse with another member molded from a polypropylene-based resin material, making it suitable for applications such as sliding members for weather strips. can be used.
また、成分(B)のエチレン系重合体は、市販のものを用いてもよい。成分(B)の市販品としては、例えば、日本ポリエチレン社製ノバテック(登録商標)シリーズ、旭化成ケミカルズ社製クレオレックス(登録商標)シリーズ、JSR社製のJSR EP、三井化学社製の三井EPT(登録商標)、住友化学社製のエスプレン(登録商標)、ARLANXEO社製のKeltan(登録商標)が挙げられる。 A commercially available ethylene polymer may be used as the component (B). Commercially available products of component (B) include, for example, Novatec (registered trademark) series manufactured by Japan Polyethylene Corporation, Creolex (registered trademark) series manufactured by Asahi Kasei Chemicals, JSR EP manufactured by JSR, and Mitsui EPT manufactured by Mitsui Chemicals ( (registered trademark), Esprene (registered trademark) manufactured by Sumitomo Chemical Co., Ltd., and Keltan (registered trademark) manufactured by ARLANXEO.
上記の成分(B)のエチレン系重合体は、1種のみを用いてもよく、組成や物性の異なるものを2種以上組み合わせて用いてもよい。 The ethylene-based polymer of component (B) may be used alone, or two or more of which have different compositions and physical properties may be used in combination.
[ポリオルガノシロキサン]
本発明の摺動部材用樹脂組成物に含まれるポリオルガノシロキサンの分子構造におけるシロキサン主鎖に結合する置換基の種類は特に限定されないが、ジメチルシリコーン(ジメチルポリシロキサン)、メチルフェニルシリコーン、あるいはアルキル変性シリコーンが好適に用いられる。
[Polyorganosiloxane]
The type of substituents bonded to the siloxane main chain in the molecular structure of the polyorganosiloxane contained in the resin composition for sliding members of the present invention is not particularly limited, but dimethyl silicone (dimethylpolysiloxane), methylphenyl silicone, or alkyl Modified silicone is preferably used.
ポリオルガノシロキサンは、本発明の摺動部材用樹脂組成物を構成するその他の材料と十分に混合させるために、プロピレン系重合体やエチレン系重合体のマスターバッチとして用いることが好ましい。マスターバッチとして使用できるプロピレン系重合体としては、例えば、前述の成分(A)のプロピレン系重合体を用いることができる。 Polyorganosiloxane is preferably used as a masterbatch of a propylene-based polymer or an ethylene-based polymer in order to sufficiently mix with other materials constituting the resin composition for sliding members of the present invention. As a propylene-based polymer that can be used as a masterbatch, for example, the propylene-based polymer of component (A) described above can be used.
ポリオルガノシロキサンは、動粘度(JIS Z8803,25℃)が100,000cSt以上であるものが好ましく、この動粘度の上限については特に制限されない。ポリオルガノシロキサンの動粘度が高いほど耐傷付き性、耐摩耗性向上の効果が高く好ましい。 The polyorganosiloxane preferably has a kinematic viscosity (JIS Z8803, 25° C.) of 100,000 cSt or more, and the upper limit of this kinematic viscosity is not particularly limited. The higher the kinematic viscosity of the polyorganosiloxane, the higher the effect of improving the scratch resistance and wear resistance, which is preferable.
ポリオルガノシロキサンは市販品として入手することができる。該当する市販品としては、例えば、デュポン・東レ・スペシャルティ・マテリアル社製「DOW CORNING TORAYTM(登録商標)」シリーズ、「バーシファイ(登録商標)」シリーズ、「DOW CORNINGTM(登録商標)」シリーズ、信越化学工業社製「X-22-2101」が挙げられ、これらの中から該当品を適宜選択して使用することができる。 Polyorganosiloxanes are commercially available. Applicable commercial products include, for example, DuPont Toray Specialty Materials "DOW CORNING TORAYTM (registered trademark)" series, "Versify (registered trademark)" series, "DOW CORNINGTM (registered trademark)" series, Shin-Etsu Chemical "X-22-2101" manufactured by Kogyosha Co., Ltd. can be mentioned, and the applicable product can be appropriately selected and used from among these.
ポリオルガノシロキサンは1種のみを用いても、2種以上を任意の組み合わせ及び比率で用いてもよい。 Polyorganosiloxane may use only 1 type, or may use 2 or more types by arbitrary combinations and a ratio.
[配合割合]
本発明の摺動部材用樹脂組成物は、オレフィン系樹脂成分100質量部に対してポリオルガノシロキサンを5~15質量部含有することが好ましい。ポリオルガノシロキサンの含有量の下限を5質量部以上とすることで、摺動耐久性が一層向上し、ウェザーストリップの摺動部材等の用途において水の除去性能に一層優れたものとなり、また摺動時の異音の発生が一層低減される。ポリオルガノシロキサンの含有量の下限は8質量部以上とすることがより好ましい。また、ポリオルガノシロキサンの含有量の上限を15質量部以下とすることで、摺動部材用樹脂組成物の成形性が一層良好となり、またブリードの発生を抑制できる傾向にある。ポリオルガノシロキサンの含有量の上限は13質量部以下とすることがより好ましい。
[Blending ratio]
The resin composition for sliding members of the present invention preferably contains 5 to 15 parts by mass of polyorganosiloxane with respect to 100 parts by mass of the olefinic resin component. By setting the lower limit of the polyorganosiloxane content to 5 parts by mass or more, the sliding durability is further improved, and the water removal performance in applications such as sliding members of weather strips is further improved. The occurrence of abnormal noise during operation is further reduced. More preferably, the lower limit of the polyorganosiloxane content is 8 parts by mass or more. Further, by setting the upper limit of the polyorganosiloxane content to 15 parts by mass or less, the moldability of the resin composition for sliding members is further improved, and the occurrence of bleeding tends to be suppressed. More preferably, the upper limit of the polyorganosiloxane content is 13 parts by mass or less.
オレフィン系樹脂成分100質量部における成分(A)のプロピレン系重合体の含有割合は25~60質量%であることが好ましく、より好ましくは25~50質量%であり、更に好ましくは30~50質量%である。また、オレフィン系樹脂成分100質量部における成分(B)のエチレン系重合体の含有割合は40~75質量%であることが好ましく、より好ましくは50~75質量%であり、更に好ましくは50~70質量%である。 The content of the propylene-based polymer of component (A) in 100 parts by mass of the olefin-based resin component is preferably 25 to 60 mass%, more preferably 25 to 50 mass%, and still more preferably 30 to 50 mass%. %. In addition, the content of the ethylene-based polymer of component (B) in 100 parts by mass of the olefin-based resin component is preferably 40 to 75% by mass, more preferably 50 to 75% by mass, and still more preferably 50 to 75% by mass. 70% by mass.
オレフィン系樹脂成分は、その全量100質量%が成分(A)と成分(B)の合計100質量%より構成されることが好ましい。成分(A)は、成分(A)と成分(B)との合計100質量%に対し、より好ましくは25~60質量%であり、更に好ましくは30~50質量%である。また、成分(B)は、成分(A)と成分(B)との合計100質量%に対し、より好ましくは40~75質量%であり、更に好ましくは50~70質量%である。 It is preferable that 100% by mass of the total amount of the olefinic resin component is composed of 100% by mass of the total of component (A) and component (B). Component (A) is more preferably 25 to 60% by mass, still more preferably 30 to 50% by mass, based on the total 100% by mass of component (A) and component (B). Component (B) is more preferably 40 to 75% by mass, still more preferably 50 to 70% by mass, based on the total 100% by mass of component (A) and component (B).
ポリオルガノシロキサンは、成分(A)と成分(B)との合計100質量部に対し5~15質量部、特に8~13質量部含有されることが好ましい。 Polyorganosiloxane is preferably contained in an amount of 5 to 15 parts by weight, particularly 8 to 13 parts by weight, per 100 parts by weight of components (A) and (B) combined.
上記した配合割合で各成分を含有することで、ガラス窓に対する追従性と高荷重下での摺動性をより高水準で達成しやすくなる。 By containing each component in the above-described blending ratio, it becomes easier to achieve a higher level of conformability to a glass window and slidability under a high load.
[その他の成分]
本発明の摺動部材用樹脂組成物には、本発明の目的を損なわない範囲で、必要に応じて、オレフィン系樹脂成分及びポリオルガノシロキサン以外の他の成分(本明細書において、単に「その他の成分」と称することがある。)を含有していてもよい。その他の成分としては、成分(A),(B)以外の樹脂やエラストマー(本明細書においてはこれらをまとめて単に「その他の樹脂」と称することがある。)や各種添加剤が挙げられる。
[Other ingredients]
The resin composition for sliding members of the present invention may optionally contain components other than the olefinic resin component and the polyorganosiloxane (hereinafter simply referred to as "other may be referred to as "components of"). Other components include resins and elastomers other than components (A) and (B) (in this specification, these may be collectively referred to simply as "other resins") and various additives.
本発明の摺動部材用樹脂組成物が含有し得るその他の樹脂としては、ポリオレフィン樹脂(ただし、前記成分(A)、成分(B)に該当するものを除く。)、ポリエステル樹脂、ポリアミド樹脂、スチレン樹脂、アクリル樹脂、ポリカーボネート樹脂、ポリ塩化ビニル樹脂等の樹脂;ポリアミド・ポリオール共重合体等のポリアミド系エラストマー;ポリ塩化ビニル系エラストマー及びポリブタジエン系エラストマー、これらの水添物や、酸無水物等により変性して極性官能基を導入させたもの、更に他の単量体をグラフト、ランダム及び/又はブロック共重合させたもの等が挙げられる。上記で挙げたその他の樹脂は1種のみを含有しても2種以上を含有してもよい。 Other resins that may be contained in the resin composition for sliding members of the present invention include polyolefin resins (excluding those corresponding to the components (A) and (B)), polyester resins, polyamide resins, Resins such as styrene resins, acrylic resins, polycarbonate resins, and polyvinyl chloride resins; polyamide-based elastomers such as polyamide-polyol copolymers; polyvinyl chloride-based elastomers and polybutadiene-based elastomers, hydrogenated products thereof, acid anhydrides, etc. modified with a polar functional group, and those obtained by grafting, random and/or block copolymerizing other monomers. The other resins listed above may contain only one type or two or more types.
これらの中でも、ポリオレフィン樹脂としては、エチレン、プロピレン、1-ブテン等の炭素数2~4のα-オレフィンの単独あるいはこれらを主成分とする共重合体が挙げられる。これらポリオレフィン樹脂としては、具体的には、ポリ-1-ブテン等の単独重合体に限らず、炭素数2~4のα-オレフィンを主成分とする限り、他の炭素数5~20のα-オレフィンあるいは酢酸ビニル、塩化ビニル、アクリル酸、メタクリル酸、スチレン等のビニル化合物との共重合体をも含むものである。更には、無水マレイン酸、マレイン酸、アクリル酸等の不飽和カルボン酸あるいはその誘導体でグラフト変性されたグラフト共重合体でもよい。更にこれらのポリオレフィン樹脂は混合物であってもよい。 Among these, examples of polyolefin resins include α-olefins having 2 to 4 carbon atoms such as ethylene, propylene and 1-butene, and copolymers thereof as main components. Specifically, these polyolefin resins are not limited to homopolymers such as poly-1-butene, and other α-olefins having 5 to 20 carbon atoms as long as they are mainly composed of α-olefins having 2 to 4 carbon atoms. - Also includes copolymers with olefins or vinyl compounds such as vinyl acetate, vinyl chloride, acrylic acid, methacrylic acid, styrene. Furthermore, graft copolymers graft-modified with unsaturated carboxylic acids such as maleic anhydride, maleic acid and acrylic acid or their derivatives may also be used. Furthermore, these polyolefin resins may be mixtures.
本発明の摺動部材用樹脂組成物がその他の樹脂を含む場合、本発明の摺動部材用樹脂組成物中のその他の樹脂の含有量は、その合計で、成分(A)と成分(B)の合計100質量部に対して、30質量部以下とすることが好ましく、20質量部以下とすることがより好ましい。 When the resin composition for sliding members of the present invention contains other resins, the total content of the other resins in the resin composition for sliding members of the present invention is the total of component (A) and component (B). ) is preferably 30 parts by mass or less, more preferably 20 parts by mass or less, with respect to the total 100 parts by mass.
また、本発明の摺動部材用樹脂組成物が含有し得る添加剤としては、ポリオルガノシロキサンと共に用いられる滑剤の他、酸化防止剤、結晶核剤等の成形加工助剤、紫外線吸収剤、ヒンダードアミン系化合物等の光安定剤、耐加水分解改良剤、顔料、染料等の着色剤、帯電防止剤、導電剤、難燃剤、補強剤、充填剤、可塑剤、離型剤、発泡剤等が挙げられる。 Additives that may be contained in the resin composition for sliding members of the present invention include lubricants used together with polyorganosiloxane, antioxidants, molding processing aids such as crystal nucleating agents, ultraviolet absorbers, and hindered amines. Light stabilizers such as system compounds, hydrolysis resistance modifiers, coloring agents such as pigments and dyes, antistatic agents, conductive agents, flame retardants, reinforcing agents, fillers, plasticizers, release agents, foaming agents, etc. be done.
本発明の摺動部材用樹脂組成物には、酸化防止剤として、ジチオカルバミン酸塩系酸化防止剤、ヒンダードフェノール系酸化防止剤、イオウ系酸化防止剤、リン系酸化防止剤等を配合することができる。
これらの酸化防止剤は1種を単独で用いてもよく、2種以上を併用してもよい。
The resin composition for a sliding member of the present invention may contain, as an antioxidant, a dithiocarbamate-based antioxidant, a hindered phenol-based antioxidant, a sulfur-based antioxidant, a phosphorus-based antioxidant, or the like. can be done.
These antioxidants may be used individually by 1 type, and may use 2 or more types together.
本発明の摺動部材用樹脂組成物が酸化防止剤を含有する場合、酸化防止剤の含有量は、成分(A)と成分(B)の合計100質量部に対して、好ましくは0.01~5質量部である。酸化防止剤の含有量が0.01質量部以上であると、耐熱劣化性の改良効果の観点で好ましく、一方、5質量部以下であると、ブリード等の問題を起こしにくい点、組成物の機械的強度の観点等から好ましい。 When the resin composition for a sliding member of the present invention contains an antioxidant, the content of the antioxidant is preferably 0.01 per 100 parts by mass of component (A) and component (B) combined. ~5 parts by mass. When the content of the antioxidant is 0.01 parts by mass or more, it is preferable from the viewpoint of improving the resistance to heat deterioration. It is preferable from the viewpoint of mechanical strength and the like.
また、本発明の摺動部材用樹脂組成物は、意匠性、耐候性の向上のために、カーボンブラック等の着色剤を含有することが好ましく、この場合、着色剤は、成分(A)と成分(B)の合計100質量部に対して0.1~5質量部、特に0.3~3質量部配合することが好ましい。なお、カーボンブラック等の着色剤のような微量配合成分は、ポリオレフィン樹脂等の樹脂のマスターバッチとして配合することが、摺動部材用樹脂組成物への均一分散性の面で好ましい。 Further, the resin composition for sliding members of the present invention preferably contains a coloring agent such as carbon black in order to improve design and weather resistance. It is preferable to add 0.1 to 5 parts by mass, particularly 0.3 to 3 parts by mass, per 100 parts by mass of component (B). It should be noted that it is preferable to mix a trace component such as a colorant such as carbon black as a masterbatch of a resin such as a polyolefin resin in terms of uniform dispersibility in the resin composition for sliding members.
また、本発明の動摺動部材用樹脂組成物は、製造安定性、寸法安定性、難燃性向上のために、充填剤を含有してもよく、この場合、充填剤としては、ガラス繊維、中空ガラス球、炭素繊維、タルク、炭酸カルシウム、マイカ、クレー、チタン酸カリウム繊維、シリカ、金属石鹸、二酸化チタン、カーボンブラック等を挙げることができる(カーボンブラックは着色剤としても充填剤としても使用可能である。)。充填剤を配合する場合、充填剤は、成分(A)と成分(B)の合計100質量部に対して通常0.1~200質量部で用いられる。 Further, the resin composition for a dynamic sliding member of the present invention may contain a filler in order to improve manufacturing stability, dimensional stability and flame retardancy. , hollow glass spheres, carbon fiber, talc, calcium carbonate, mica, clay, potassium titanate fiber, silica, metal soap, titanium dioxide, carbon black, etc. (Carbon black can be used as both a coloring agent and a filler.) available.). When a filler is blended, the filler is usually used in an amount of 0.1 to 200 parts by mass per 100 parts by mass of component (A) and component (B).
[摺動部材用樹脂組成物の成形]
本発明の摺動部材用樹脂組成物の成形には、押出成形、射出成形、圧縮成形、ブロー成形の何れの成形方法も適用できる。
[Molding of Resin Composition for Sliding Member]
Any of extrusion molding, injection molding, compression molding and blow molding can be applied to molding the resin composition for sliding members of the present invention.
[押出成形体]
本発明の摺動部材用樹脂組成物を押出成形することで本発明の押出成形体を製造することができる。
[Extruded body]
The extruded body of the present invention can be produced by extruding the resin composition for sliding members of the present invention.
本発明の摺動部材用樹脂組成物を用いて、他の部材と一体化させた押出成形体、例えば、プロピレン系重合体等の樹脂よりなる基材部と、基材部の一部分に積層されるように設けられた摺動部とを有するウェザーストリップの摺動部を形成する場合、基材部と摺動部の成形順序は、一方を先に成形して後から他方へ成形しても、同時に成形してもよいが、特に共押出成形法が好適である。 An extruded body integrated with another member using the resin composition for a sliding member of the present invention, for example, a substrate portion made of a resin such as a propylene-based polymer, and a part laminated on the substrate portion When forming the sliding portion of the weatherstrip having the sliding portion provided as described above, the molding order of the base portion and the sliding portion may be such that one is molded first and then the other. , may be molded at the same time, but a co-extrusion molding method is particularly suitable.
[摺動部材]
本発明の摺動部材用樹脂組成物よりなる摺動部材は、表面外観、柔軟性、耐候性、耐熱性、耐温水性、耐傷性に優れるため、屋内外で使用される複合樹脂成形品、特に、ルーフモール、ウェザーストリップ、ウインドウモール、フラッシュマウントモール、サイドモール、グラスランチャンネル等の自動車外装部品、座席シートレールの保護カバーやアシストグリップ、シフトノブ等の自動車内装部品、玄関ドアシール、パッキン材などの建築ガスケット、手すり、テーブルエッジ、デスクエッジ等に適するが、とりわけ自動車用ウェザーストリップ等の自動車用モールディング用途に好適に使用される。
[Sliding member]
Sliding members made of the resin composition for sliding members of the present invention are excellent in surface appearance, flexibility, weather resistance, heat resistance, hot water resistance, and scratch resistance. In particular, automotive exterior parts such as roof moldings, weather strips, window moldings, flush mount moldings, side moldings, glass run channels, automotive interior parts such as protective covers for seat rails, assist grips, and shift knobs, entrance door seals, packing materials, etc. It is suitable for architectural gaskets, handrails, table edges, desk edges and the like, but is particularly well suited for use in automotive molding applications such as automotive weatherstrips.
以下、実施例を用いて本発明の具体的態様を更に詳細に説明するが、本発明はその要旨を超えない限り、以下の実施例によって限定されるものではない。尚、以下の実施例における各種の製造条件や評価結果の値は、本発明の実施態様における上限又は下限の好ましい値としての意味をもつものであり、好ましい範囲は前記した上限又は下限の値と、下記実施例の値又は実施例同士の値との組み合わせで規定される範囲であってもよい。 Specific embodiments of the present invention will be described in more detail below using examples, but the present invention is not limited by the following examples as long as the gist thereof is not exceeded. Various production conditions and values of evaluation results in the following examples have the meaning of preferred values of the upper limit or the lower limit in the embodiments of the present invention, and the preferred range is the above-described upper limit or lower limit value. , the range defined by the values in the following examples or a combination of the values in the examples.
〔原材料〕
以下の実施例及び比較例で使用した原材料は以下のとおりである。
〔raw materials〕
Raw materials used in the following examples and comparative examples are as follows.
[成分(A):プロピレン系重合体]
<プロピレン単独重合体>
・A-1:日本ポリプロ株式会社製 商品名:ノバテック(登録商標)
MFR(230℃、21.2N):2.5g/10分
密度(JIS K7112):0.90g/cm3
曲げ弾性率(JIS K7171):1400MPa
・A-2:日本ポリプロ株式会社製 商品名:ノバテック(登録商標)
MFR(230℃、21.2N):11g/10分
密度(JIS K7112):0.90g/cm3
曲げ弾性率(JIS K7171):1500MPa
・A-3:日本ポリプロ株式会社製 商品名:ノバテック(登録商標)
MFR(230℃、21.2N):0.4g/10分
密度(JIS K7112):0.90g/cm3
曲げ弾性率(JIS K7171):1950MPa
・A-4:日本ポリプロ株式会社製 商品名:ノバテック(登録商標)
MFR(230℃、21.2N):40g/10分
密度(JIS K7112):0.90g/cm3
曲げ弾性率(JIS K7171):1450MPa
[Component (A): propylene-based polymer]
<Propylene homopolymer>
・A-1: Made by Japan Polypropylene Corporation Product name: Novatec (registered trademark)
MFR (230° C., 21.2 N): 2.5 g/10 minutes Density (JIS K7112): 0.90 g/cm 3
Flexural modulus (JIS K7171): 1400 MPa
・A-2: Made by Japan Polypropylene Corporation Product name: Novatec (registered trademark)
MFR (230° C., 21.2 N): 11 g/10 minutes Density (JIS K7112): 0.90 g/cm 3
Flexural modulus (JIS K7171): 1500 MPa
・A-3: Made by Japan Polypropylene Corporation Product name: Novatec (registered trademark)
MFR (230° C., 21.2 N): 0.4 g/10 minutes Density (JIS K7112): 0.90 g/cm 3
Flexural modulus (JIS K7171): 1950 MPa
・A-4: Made by Japan Polypropylene Corporation Product name: Novatec (registered trademark)
MFR (230° C., 21.2 N): 40 g/10 minutes Density (JIS K7112): 0.90 g/cm 3
Flexural modulus (JIS K7171): 1450 MPa
<プロピレン共重合体>
・A-5:ダウ・ケミカル株式会社製 商品名:バーシファイ(登録商標)
プロピレン・エチレン共重合体
プロピレン単位含有率:80~90質量%
MFR(230℃、21.2N):25g/10分
密度(JIS K7112):0.88g/cm3
曲げ弾性率(JIS K7171):120MPa
・A-6:ダウ・ケミカル株式会社製 商品名:バーシファイ(登録商標)
プロピレン・エチレン共重合体
プロピレン単位含有率:80~90質量%
MFR(230℃、21.2N):2g/10分
密度(JIS K7112):0.87g/cm3
曲げ弾性率(JIS K7171):100MPa
・A-7:三井化学株式会社製 商品名:タフマー(登録商標) XM-7070
プロピレン・1-ブテン共重合体
プロピレン単位含有率:65~75質量%
MFR(230℃、21.2N):7g/10分
曲げ弾性率(JIS K7171):200MPa
<Propylene copolymer>
・A-5: manufactured by Dow Chemical Co., Ltd. Product name: Versify (registered trademark)
Propylene/ethylene copolymer propylene unit content: 80 to 90% by mass
MFR (230° C., 21.2 N): 25 g/10 minutes Density (JIS K7112): 0.88 g/cm 3
Flexural modulus (JIS K7171): 120 MPa
・A-6: manufactured by Dow Chemical Co., Ltd. Product name: Versify (registered trademark)
Propylene/ethylene copolymer propylene unit content: 80 to 90% by mass
MFR (230° C., 21.2 N): 2 g/10 minutes Density (JIS K7112): 0.87 g/cm 3
Flexural modulus (JIS K7171): 100 MPa
・A-7: Made by Mitsui Chemicals, Inc. Product name: Toughmer (registered trademark) XM-7070
Propylene/1-butene copolymer Propylene unit content: 65 to 75% by mass
MFR (230° C., 21.2 N): 7 g/10 minutes Flexural modulus (JIS K7171): 200 MPa
[成分(B):エチレン系重合体]
・B-1:日本ポリケム株式会社製 商品名:ノバテック(登録商標)
高密度ポリエチレン
密度(JIS K6922):0.96g/cm3
MFR(230℃、21.2N):12g/10分
曲げ弾性率(JIS K7171):1000MPa
・B-2:日本ポリケム株式会社製 商品名:ノバテック(登録商標)
高密度ポリエチレン
密度(JIS K6922):0.96g/cm3
MFR(230℃、21.2N):0.3g/10分
曲げ弾性率(JIS K7171):1600MPa
・B-3:旭化成株式会社製 商品名:クレオレックス(登録商標)
高密度ポリエチレン
密度(JIS K6922):0.97g/cm3
MFR(230℃、21.2N):12g/10分
曲げ弾性率(JIS K7171):1120MPa
・B-4:日本ポリケム株式会社製 商品名:ノバテック(登録商標)
低密度ポリエチレン
密度(JIS K6922):0.92g/cm3
MFR(230℃、21.2N):12g/10分
曲げ弾性率(JIS K7171):200MPa
・B-5:三井化学株式会社製 商品名:三井EPT(登録商標)
エチレンエラストマー
エチレン単位含有率:66質量%
プロピレン単位含有率:29質量%
密度(JIS K6922):0.87g/cm3
曲げ弾性率(JIS K7171):<200MPa
[Component (B): ethylene polymer]
・B-1: Made by Japan Polychem Co., Ltd. Product name: Novatec (registered trademark)
High density polyethylene density (JIS K6922): 0.96g/ cm3
MFR (230° C., 21.2 N): 12 g/10 minutes Flexural modulus (JIS K7171): 1000 MPa
・B-2: Made by Japan Polychem Co., Ltd. Product name: Novatec (registered trademark)
High density polyethylene density (JIS K6922): 0.96g/ cm3
MFR (230° C., 21.2 N): 0.3 g/10 minutes Flexural modulus (JIS K7171): 1600 MPa
・B-3: Asahi Kasei Corporation Product name: Creolex (registered trademark)
High density polyethylene density (JIS K6922): 0.97g/ cm3
MFR (230° C., 21.2 N): 12 g/10 minutes Flexural modulus (JIS K7171): 1120 MPa
・B-4: Made by Japan Polychem Co., Ltd. Product name: Novatec (registered trademark)
Low density polyethylene density (JIS K6922): 0.92g/ cm3
MFR (230° C., 21.2 N): 12 g/10 minutes Flexural modulus (JIS K7171): 200 MPa
・B-5: Manufactured by Mitsui Chemicals, Inc. Product name: Mitsui EPT (registered trademark)
Ethylene elastomer Ethylene unit content: 66% by mass
Propylene unit content: 29% by mass
Density (JIS K6922): 0.87g/ cm3
Flexural modulus (JIS K7171): <200 MPa
[ポリオルガノシロキサン]
デュポン・東レ・スペシャルティ・マテリアル社製 商品名:バーシファイ(登録商標)MB50-001G2
ジメチルポリシロキサンマスターバッチ
ジメチルポリシロキサン含有率:50質量%
ジメチルポリシロキサンの動粘度(25℃):1,000,000cSt以上
[Polyorganosiloxane]
DuPont Toray Specialty Materials Product name: Versify (registered trademark) MB50-001G2
Dimethylpolysiloxane masterbatch Dimethylpolysiloxane content: 50% by mass
Dynamic viscosity of dimethylpolysiloxane (25°C): 1,000,000 cSt or more
[その他の成分]
・BF300(充填材、備北粉化工業株式会社製)
・アーモスリップCP(滑剤、ライオン・スペシャリティ・ケミカルズ株式会社製)
・イルガノックス 1010(酸化防止剤、BASFジャパン株式会社製)
・TACKIROL 201(架橋剤、田岡化学工業株式会社製)
・酸化亜鉛(架橋活性化剤、和光純薬工業株式会社製)
・塩化第一スズ(架橋活性化剤、和光純薬工業株式会社製)
[Other ingredients]
・ BF300 (filler, manufactured by Bihoku Funka Kogyo Co., Ltd.)
・ Armoslip CP (lubricant, manufactured by Lion Specialty Chemicals Co., Ltd.)
・ Irganox 1010 (antioxidant, manufactured by BASF Japan Ltd.)
・ TACKIROL 201 (crosslinking agent, manufactured by Taoka Chemical Co., Ltd.)
・ Zinc oxide (crosslinking activator, manufactured by Wako Pure Chemical Industries, Ltd.)
・ Stannous chloride (crosslinking activator, manufactured by Wako Pure Chemical Industries, Ltd.)
〔評価方法〕
以下の実施例及び比較例における摺動材料の評価方法は以下の通りである。
〔Evaluation method〕
Evaluation methods for the sliding materials in the following examples and comparative examples are as follows.
[ペレットの製造]
表1に示す成分を表1に示す割合で配合し、同方向二軸押出機(日本製鋼所「TEX30」、L/D=52.5、シリンダブロック数:14)に混合物を投入した。上流部から下流部を120~210℃の範囲で昇温させて溶融混練を行い、ダイスから吐出されるストランドをペレタイザーでカットし、樹脂組成物からなる均一な形状のペレットを得た。
[Production of pellets]
The components shown in Table 1 were blended in the proportions shown in Table 1, and the mixture was put into a co-rotating twin-screw extruder (Japan Steel Works "TEX30", L/D = 52.5, number of cylinder blocks: 14). Melt-kneading was performed by raising the temperature from the upstream portion to the downstream portion in the range of 120 to 210° C., and the strand discharged from the die was cut with a pelletizer to obtain pellets of a resin composition having a uniform shape.
[DuroD硬度]
得られたペレットを用いて、インラインスクリュウタイプ射出成形機(東芝機械社製「IS130」)にて、射出圧力50MPa、シリンダー温度220℃、金型温度40℃の条件下にて射出成形を行い、厚さ2mm×幅120mm×長さ80mmのシートを得た。
このシートについて、ISO 868の規格を参考にしてDuroD硬度を測定した。
DuroD硬度が40~55の範囲にあるものは、摺動部材に求められる追従性に優れるものと評価される。
[DuroD hardness]
Using the obtained pellets, injection molding is performed using an in-line screw type injection molding machine ("IS130" manufactured by Toshiba Machine Co., Ltd.) under the conditions of an injection pressure of 50 MPa, a cylinder temperature of 220 ° C., and a mold temperature of 40 ° C. A sheet of thickness 2 mm×width 120 mm×length 80 mm was obtained.
The DuroD hardness of this sheet was measured with reference to the ISO 868 standard.
Those having a DuroD hardness in the range of 40 to 55 are evaluated as excellent in followability required for sliding members.
[MFR]
得られたペレットについて、メルトインデクサー(機種名「L220」、立山科学工業株式会社製)を用いて、荷重21.2N、測定温度230℃で、MFRを測定した。
[MFR]
The MFR of the obtained pellets was measured using a melt indexer (model name "L220", manufactured by Tateyama Kagaku Kogyo Co., Ltd.) at a load of 21.2 N and a measurement temperature of 230°C.
[動摩擦係数]
得られたペレットを用いて、単軸押出機の樹脂温度を180℃に設定して押出成形し、幅25mm、厚み1mmの摺動材料用試験片を成形した。
得られた試験片について、ASTM D1894の規格を参考し、新東科学会社製HEIDON摩擦試験機を使用して動摩擦係数を測定した。
試験条件は、相手材:ガラス板、速度:100mm/s、距離:6cm、荷重:500g、測定環境温度:23℃とした。この値が小さいほど、高荷重下での摺動性に優れるものと評価される。
[Dynamic friction coefficient]
The obtained pellets were extruded with a single-screw extruder at a resin temperature of 180° C. to form test pieces for sliding materials having a width of 25 mm and a thickness of 1 mm.
The dynamic friction coefficient of the obtained test piece was measured using a HEIDON friction tester manufactured by Shinto Kagaku Co., Ltd. with reference to the ASTM D1894 standard.
The test conditions were as follows: opponent material: glass plate, speed: 100 mm/s, distance: 6 cm, load: 500 g, measurement environment temperature: 23°C. The smaller this value, the better the slidability under high load.
〔評価結果〕
実施例1~6及び比較例1~5における評価結果を表1に示す。
〔Evaluation results〕
Table 1 shows the evaluation results in Examples 1-6 and Comparative Examples 1-5.
表1より、本発明の摺動部材用樹脂組成物は、追従性と高荷重下での摺動性に優れることが分かる。
これに対して比較例1,2はT1/T2が本発明の範囲外であり、DuroD硬度が40~55の範囲内とならず追従性に劣る上に、比較例2では動摩擦係数が大きく、摺動性に劣る。
比較例3~5は、オレフィン系樹脂成分が架橋剤により架橋されており、動摩擦係数が大きく、高荷重下での摺動性に劣る。
From Table 1, it can be seen that the resin composition for sliding members of the present invention is excellent in followability and slidability under high load.
On the other hand, in Comparative Examples 1 and 2, T1/T2 is outside the range of the present invention. Poor slidability.
In Comparative Examples 3 to 5, the olefinic resin component is crosslinked with a crosslinking agent, the coefficient of dynamic friction is large, and the slidability under high load is poor.
Claims (10)
成分(A):プロピレン系重合体
成分(B):エチレン系重合体 The resin composition for sliding members according to any one of claims 1 to 4, wherein the olefin-based resin component contains the following component (A) and component (B).
Component (A): Propylene polymer Component (B): Ethylene polymer
A weatherstrip comprising a substrate and a sliding member made of the resin composition for a sliding member according to any one of claims 1 to 7.
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