WO2016167328A1 - コンデンサ用二軸延伸ポリプロピレンフィルム - Google Patents
コンデンサ用二軸延伸ポリプロピレンフィルム Download PDFInfo
- Publication number
- WO2016167328A1 WO2016167328A1 PCT/JP2016/062038 JP2016062038W WO2016167328A1 WO 2016167328 A1 WO2016167328 A1 WO 2016167328A1 JP 2016062038 W JP2016062038 W JP 2016062038W WO 2016167328 A1 WO2016167328 A1 WO 2016167328A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- polypropylene film
- biaxially stretched
- ethylene
- stretched polypropylene
- Prior art date
Links
- -1 polypropylene Polymers 0.000 title claims abstract description 213
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 212
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 212
- 239000003990 capacitor Substances 0.000 title claims abstract description 106
- 229920005989 resin Polymers 0.000 claims abstract description 113
- 239000011347 resin Substances 0.000 claims abstract description 113
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000005977 Ethylene Substances 0.000 claims abstract description 57
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 19
- 229920001577 copolymer Polymers 0.000 claims description 91
- 229910052751 metal Inorganic materials 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 35
- 238000002844 melting Methods 0.000 claims description 25
- 230000008018 melting Effects 0.000 claims description 25
- 239000013078 crystal Substances 0.000 claims description 20
- 238000002425 crystallisation Methods 0.000 claims description 16
- 230000008025 crystallization Effects 0.000 claims description 16
- 230000004927 fusion Effects 0.000 claims description 11
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims description 9
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims description 9
- 238000004736 wide-angle X-ray diffraction Methods 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 abstract description 25
- 239000010408 film Substances 0.000 description 223
- 238000000034 method Methods 0.000 description 63
- 229920001384 propylene homopolymer Polymers 0.000 description 31
- 229920001519 homopolymer Polymers 0.000 description 29
- 239000000203 mixture Substances 0.000 description 21
- 238000010438 heat treatment Methods 0.000 description 20
- 238000002156 mixing Methods 0.000 description 17
- 238000005259 measurement Methods 0.000 description 16
- 239000003963 antioxidant agent Substances 0.000 description 15
- 239000008188 pellet Substances 0.000 description 15
- 238000007740 vapor deposition Methods 0.000 description 14
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 12
- 238000004804 winding Methods 0.000 description 12
- 229920000642 polymer Polymers 0.000 description 11
- 230000003078 antioxidant effect Effects 0.000 description 10
- 238000009826 distribution Methods 0.000 description 10
- 238000005227 gel permeation chromatography Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 238000004898 kneading Methods 0.000 description 9
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000006116 polymerization reaction Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 7
- 230000007774 longterm Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 238000005481 NMR spectroscopy Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 239000010432 diamond Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000002685 polymerization catalyst Substances 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 239000004793 Polystyrene Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 229920002223 polystyrene Polymers 0.000 description 4
- 229920005653 propylene-ethylene copolymer Polymers 0.000 description 4
- 229920005604 random copolymer Polymers 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000002216 antistatic agent Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- WSSSPWUEQFSQQG-UHFFFAOYSA-N dimethylbutene Natural products CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011104 metalized film Substances 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 238000007788 roughening Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000003878 thermal aging Methods 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- RELMFMZEBKVZJC-UHFFFAOYSA-N 1,2,3-trichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1Cl RELMFMZEBKVZJC-UHFFFAOYSA-N 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- ZVVFVKJZNVSANF-UHFFFAOYSA-N 6-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]hexyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCCCCCCOC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 ZVVFVKJZNVSANF-UHFFFAOYSA-N 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- OKOBUGCCXMIKDM-UHFFFAOYSA-N Irganox 1098 Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NCCCCCCNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OKOBUGCCXMIKDM-UHFFFAOYSA-N 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000003851 corona treatment Methods 0.000 description 2
- 239000003480 eluent Substances 0.000 description 2
- 238000004742 high temperature nuclear magnetic resonance Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- SNVLJLYUUXKWOJ-UHFFFAOYSA-N methylidenecarbene Chemical compound C=[C] SNVLJLYUUXKWOJ-UHFFFAOYSA-N 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 229920003196 poly(1,3-dioxolane) Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920005606 polypropylene copolymer Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000930 thermomechanical effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- KJYSXRBJOSZLEL-UHFFFAOYSA-N (2,4-ditert-butylphenyl) 3,5-ditert-butyl-4-hydroxybenzoate Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OC(=O)C1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 KJYSXRBJOSZLEL-UHFFFAOYSA-N 0.000 description 1
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 1
- QSRJVOOOWGXUDY-UHFFFAOYSA-N 2-[2-[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 QSRJVOOOWGXUDY-UHFFFAOYSA-N 0.000 description 1
- VFBJXXJYHWLXRM-UHFFFAOYSA-N 2-[2-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]ethylsulfanyl]ethyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCCSCCOC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 VFBJXXJYHWLXRM-UHFFFAOYSA-N 0.000 description 1
- WPMYUUITDBHVQZ-UHFFFAOYSA-M 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=CC(CCC([O-])=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-M 0.000 description 1
- 241000251468 Actinopterygii Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241001315609 Pittosporum crassifolium Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000011954 Ziegler–Natta catalyst Substances 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
- 230000001070 adhesive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012685 gas phase polymerization Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- RYPKRALMXUUNKS-UHFFFAOYSA-N hex-2-ene Chemical compound CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical class CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- DJWFNQUDPJTSAD-UHFFFAOYSA-N n-octadecyloctadecanamide Chemical class CCCCCCCCCCCCCCCCCCNC(=O)CCCCCCCCCCCCCCCCC DJWFNQUDPJTSAD-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical class CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical class [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920005630 polypropylene random copolymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003140 primary amides Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 150000003334 secondary amides Chemical class 0.000 description 1
- 125000000467 secondary amino group Chemical class [H]N([*:1])[*:2] 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
-
- 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
- C08J5/18—Manufacture of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/54—Electroplating of non-metallic surfaces
- C25D5/56—Electroplating of non-metallic surfaces of plastics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/32—Wound capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/16—Capacitors
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a biaxially stretched polypropylene film for a capacitor.
- the biaxially stretched polypropylene film has excellent electrical characteristics such as voltage resistance and low dielectric loss characteristics, and high moisture resistance.
- Biaxially stretched polypropylene film is preferably used as a dielectric film for capacitors such as high-voltage capacitors, various switching power supplies, filter capacitors such as converters and inverters, and smoothing capacitors in electronic and electrical equipment, taking advantage of these characteristics. It's being used.
- Polypropylene films have also begun to be used as capacitors for inverter power supply devices that control drive motors of electric vehicles and hybrid vehicles, for which demand is increasing in recent years.
- capacitors used for automobiles are always exposed to high temperatures, and therefore, they are required to stably function as capacitors without causing dielectric breakdown even at high temperatures.
- Patent Document 1 discloses a resin obtained by blending polymethylpentene with a polypropylene resin
- Patent Documents 2 to 4 disclose using a resin obtained by blending a polypropylene resin with a 4-methyl-1-pentene copolymer.
- Patent Document 5 a copolymer of propylene and ⁇ -olefin can be cited (Patent Document 5).
- Patent Document 5 also regards the copolymerization of ethylene and propylene as “prone to decrease in pressure resistance characteristics at high temperatures”, and so far ethylene-propylene copolymer has been used as a raw material for capacitor films. Not enough consideration has been given.
- the main object of the present invention is to provide a biaxially stretched polypropylene film for a capacitor that is excellent in dielectric breakdown resistance even at high temperatures (for example, 100 ° C. or higher) and that can be made extremely thin.
- the present inventors are excellent in stretchability and mechanical strength, but because the raw material resin pellets have a low melting point, dielectric breakdown resistance at high temperatures due to a delay in the crystallization of the molten resin
- Intensive research has been conducted on ethylene-propylene copolymers with the problem of reduced properties.
- a polypropylene resin having a specific ethylene unit content not only conventional film-forming properties and stretchability are imparted, but also the obtained biaxially stretched film is contrary to conventional knowledge. It has been found that the heat of fusion is kept high and the withstand voltage characteristics are remarkably improved.
- the present invention has been completed based on such findings.
- Item 1 A biaxially stretched polypropylene film comprising a polypropylene resin having an ethylene unit, The ethylene unit content is 7.5 mol% or less based on the total amount of propylene units and ethylene units detected from the film. Biaxially oriented polypropylene film for capacitors.
- the polypropylene resin contains an ethylene-propylene copolymer, The weight average molecular weight (Mw) of the ethylene-propylene copolymer is 250,000 to 800,000, Item 2.
- Mw weight average molecular weight
- Item 3 The biaxially stretched polypropylene film for capacitors according to Item 2, wherein the content of the ethylene-propylene copolymer is 5% by mass or more and 50% by mass or less in the polypropylene resin.
- Item 4 The biaxially oriented polypropylene film for capacitors according to Item 2 or 3, wherein the melting point of the ethylene-propylene copolymer is 110 ° C. or higher and 170 ° C. or lower.
- Item 5 The biaxially stretched polypropylene film for capacitors according to any one of Items 2 to 4, wherein the crystallization temperature of the ethylene-propylene copolymer is 85 ° C. or higher and 110 ° C. or lower.
- Item 6 The biaxially stretched polypropylene film for capacitors according to any one of Items 1 to 5, wherein the heat of fusion of the polypropylene film is 90 J / g or more.
- Item 7 The crystallite size calculated using the Scherrer equation from the half-value width of the ⁇ crystal (040) plane reflection peak measured by the wide-angle X-ray diffraction method of the polypropylene film is 10.0 nm or more and 16.3 nm or less.
- Item 7 The biaxially stretched polypropylene film for capacitors according to any one of Items 1 to 6.
- Item 8 The biaxially stretched polypropylene film for capacitors according to any one of Items 1 to 7, wherein a metal film is formed on one or both surfaces of the biaxially stretched polypropylene film.
- Item 9 A capacitor obtained using the biaxially stretched polypropylene film for capacitors according to any one of Items 1 to 8.
- Item 10 Biaxial stretching for a capacitor, including a step (A) of melting and molding a polypropylene resin to obtain a cast raw sheet of polypropylene resin, and a step (B) of biaxially stretching the obtained cast raw sheet A method for producing a polypropylene film, The manufacturing method whose polypropylene resin has an ethylene unit and whose content rate of an ethylene unit is 7.5 mol% or less with respect to the total amount of the propylene unit and ethylene unit detected from a film.
- Item 11 The polypropylene resin in step (A) contains an ethylene-propylene copolymer, Item 11.
- Item 12 A biaxially stretched polypropylene film containing a polypropylene resin having an ethylene unit, used as a capacitor film, Use of a polypropylene film in which the content of ethylene units is 7.5 mol% or less based on the total amount of propylene units and ethylene units detected from the film.
- Item 13 A biaxially stretched polypropylene film containing a polypropylene resin having an ethylene unit, used as a capacitor film, The usage method of a polypropylene film whose content rate of an ethylene unit is 7.5 mol% or less with respect to the total amount of the propylene unit and ethylene unit detected from a film.
- the biaxially oriented polypropylene film for capacitors of the present invention is excellent in dielectric breakdown resistance even under high temperature conditions.
- the biaxially stretched polypropylene film for capacitors of the present invention can be made thin, and it can be expected to reduce the size and weight of the obtained capacitor.
- a capacitor obtained by using the biaxially stretched polypropylene film for capacitors of the present invention can be expected to be suitably used as a high-capacitance capacitor to which a high voltage is applied at a high temperature.
- the biaxially stretched polypropylene film for capacitors of the present invention is characterized by containing the above-described polypropylene resin having an ethylene unit.
- the biaxially stretched polypropylene film for capacitors of the present invention will be described in detail.
- the biaxially stretched polypropylene film for capacitors of the present invention is also simply referred to as the polypropylene film of the present invention.
- the polypropylene resin used for forming the biaxially stretched polypropylene film for capacitors of the present invention has an ethylene unit.
- a polypropylene resin an ethylene-propylene copolymer having an ethylene unit may be used alone, and as described later, a blend containing (1) a propylene homopolymer and (2) an ethylene-propylene copolymer Resin may be used.
- the resin component constituting the biaxially stretched polypropylene film for capacitors of the present invention is preferably a combination of the two types of resin components (1) propylene homopolymer and (2) ethylene-propylene copolymer.
- the content of ethylene units contained in the polypropylene resin is 7.5 mol% or less, preferably 7 mol% or less, more preferably 6 mol% or less, based on the total amount of propylene units and ethylene units detected from the film.
- the ethylene unit content in the polypropylene resin exceeds 7.5 mol%, the melting point of the obtained film is significantly lowered, and as a result, the voltage resistance of the film at high temperatures tends to be lowered.
- the content rate of the ethylene unit in polypropylene resin is a trace amount, the polypropylene film excellent in the dielectric breakdown-proof characteristic is obtained.
- the lower limit of the ethylene unit content is preferably more than zero, more preferably 0.0001 mol%, still more preferably 0.0005 mol%, still more preferably 0.001 mol%, 0.005 mol% is even more preferable.
- the ethylene unit content is preferably 4 mol% or less, more preferably 3 mol% or less, still more preferably 2 mol% or less, still more preferably 1 mol% or less, still more preferably 0.5 mol% or less, and 09 mol% or less is particularly preferable. In these cases, the haze of the biaxially stretched polypropylene film for capacitors is in the desired range, the element winding processability is likely to be good, and the dielectric breakdown resistance is further improved.
- the propylene homopolymer may be used alone as long as it is a propylene homopolymer having the following physical properties described below. Moreover, what is obtained by mixing 2 or more types of propylene homopolymers may be used.
- the weight average molecular weight (Mw) of the propylene homopolymer is preferably 250,000 to 450,000.
- Mw weight average molecular weight
- an appropriate resin fluidity can be obtained at the time of biaxial stretching, and the thickness of the cast original fabric sheet can be easily controlled. It is preferable to use a polypropylene resin having the above weight average molecular weight (Mw) because it becomes easy to obtain an ultrathin biaxially stretched polypropylene film suitable for, for example, a small and high capacity type capacitor.
- the weight average molecular weight (Mw) of the propylene homopolymer is more preferably 270,000 or more and 290,000 or more from the viewpoints of thickness uniformity, mechanical properties, thermo-mechanical properties, etc. of the biaxially stretched polypropylene film. More preferably.
- the weight average molecular weight (Mw) of the polypropylene resin is more preferably 400,000 or less from the viewpoint of the fluidity of the polypropylene resin and the stretchability when obtaining an ultrathin biaxially stretched polypropylene film.
- the molecular weight distribution (Mw / Mn) calculated as a ratio of the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the propylene homopolymer is preferably 7 or more and 12 or less. Further, the molecular weight distribution (Mw / Mn) is more preferably 7.3 or more, and further preferably 7.5 or more. Furthermore, the molecular weight distribution (Mw / Mn) is more preferably 11 or less, and further preferably 10 or less.
- Use of such a propylene homopolymer is preferable because an appropriate resin fluidity can be obtained during biaxial stretching, and it is easy to obtain a very thin biaxially stretched propylene film having no thickness unevenness. Such polypropylene is also preferable from the viewpoint of voltage resistance of the biaxially stretched polypropylene film.
- the weight average molecular weight (Mw) and number average molecular weight (Mn) of the propylene homopolymer can be measured by a gel permeation chromatography (GPC) method.
- the GPC apparatus used in the GPC method is not particularly limited, and is a commercially available high-temperature GPC measuring instrument capable of analyzing the molecular weight of polyolefins, for example, a high-temperature GPC measuring instrument with a built-in differential refractometer (RI) manufactured by Tosoh Corporation. HLC-8121GPC-HT or the like can be used.
- a GPC column manufactured by Tosoh Corporation, with three TSKgel GMHHR-H (20) HT connected is used, the column temperature is set to 140 ° C., and trichlorobenzene is used as an eluent. Measured at a flow rate of 1.0 ml / min.
- a calibration curve is prepared using standard polystyrene, and the weight average molecular weight (Mw) and the number average molecular weight (Mn) can be obtained by polystyrene conversion.
- the melt flow rate (MFR) at 230 ° C. and a load of 2.16 kg of the propylene homopolymer contained in the polypropylene resin, which is a blend resin, is preferably 7 g / 10 min or less from the viewpoint of stretchability of the resulting film. 6 g / 10 min or less is more preferable, and 5 g / 10 min or less is more preferable. Further, from the viewpoint of increasing the accuracy of the thickness of the biaxially stretched polypropylene film of the present invention, it is preferably 0.3 g / 10 min or more, more preferably 0.5 g / 10 min or more, and 1 g / 10 min or more. More preferably, it is more preferably 3 g / 10 minutes or more.
- the MFR can be measured according to JIS K 7210-1999.
- propylene homopolymer examples include propylene homopolymers such as isotactic polypropylene and syndiotactic polypropylene, and copolymers of propylene and ethylene.
- the propylene homopolymer is preferably isotactic polypropylene, and more preferably isotactic polypropylene obtained by homopolymerizing polypropylene in the presence of an olefin polymerization catalyst. preferable.
- the mesopentad fraction ([mmmm]) of the propylene homopolymer is preferably 94% or more and 99% or less.
- the mesopentad fraction is more preferably 95% or more and 98.5% or less.
- the mesopentad fraction ([mmmm]) is an index of stereoregularity that can be obtained by high temperature nuclear magnetic resonance (NMR) measurement.
- NMR nuclear magnetic resonance
- measurement can be performed using a high temperature Fourier transform nuclear magnetic resonance apparatus (high temperature FT-NMR), JNM-ECP500 manufactured by JEOL Ltd.
- the observation nucleus is 13 C (125 MHz), the measurement temperature is 135 ° C.
- ODCB ortho-dichlorobenzene
- the measurement method by high temperature NMR can be performed, for example, by referring to the method described in “Japan Analytical Chemistry / Polymer Analysis Research Council, New Edition Polymer Analysis Handbook, Kinokuniya, 1995, p. 610”. it can.
- the pentad fraction representing the degree of stereoregularity is a combination of the quintet (pentad) of the consensus “meso (m)” arranged in the same direction and the consensus “rasemo (r)” arranged in the opposite direction (mmmm and mrrm). Etc.) based on the integrated value of the intensity of each signal derived from.
- Each signal derived from mmmm, mrrm, etc. can be attributed with reference to, for example, “T. Hayashi et al., Polymer, 29, 138 (1988)”.
- Propylene homopolymer can be produced using a conventionally known method.
- the polymerization method include a gas phase polymerization method, a bulk polymerization method, and a slurry polymerization method.
- the polymerization may be one-stage polymerization using one polymerization reactor, or may be multistage polymerization using two or more polymerization reactors. Moreover, you may superpose
- a conventionally known Ziegler-Natta catalyst can be used as the polymerization catalyst, and the polymerization catalyst may contain a promoter component and a donor.
- the molecular weight, molecular weight distribution, stereoregularity and the like of the propylene homopolymer can be controlled by appropriately adjusting the polymerization catalyst and other polymerization conditions.
- the ethylene-propylene copolymer contained in the polypropylene resin may be any copolymer such as a random copolymer, a block copolymer, or a graft copolymer. Among these, a random copolymer is preferable.
- the content of ethylene units contained in the ethylene-propylene copolymer is set so as to be the content of ethylene units relative to the total amount of propylene units and ethylene units detected from the film.
- the content of ethylene units contained in the ethylene-propylene copolymer is preferably more than zero in the ethylene-propylene copolymer, more preferably 0.05 mol% or more, further preferably 0.08 mol% or more, 0 More preferably, 1 mol% or more.
- the ethylene unit content is preferably 20 mol% or less, more preferably 10 mol% or less, further preferably 9 mol% or less, and particularly preferably 8 mol% or less.
- the ethylene unit content is determined, for example, using a Fourier transform nuclear magnetic resonance apparatus (FT-NMR) or the like. More specifically, in the present invention, high temperature FT-NMR VNMRS-400 manufactured by Varian is used, and the observation nucleus can be measured at 13 C (100.6 MHz).
- FT-NMR Fourier transform nuclear magnetic resonance apparatus
- Measured mode can be reverse gated decoupling
- shift standard can be propylene unit 5 chain (mmmm) (21.86ppm).
- the ethylene unit content (mol%) can be determined from, for example, “Y.-D. Zhang et al., Polym. J., Vol. 35, from the signal integral value of methylene carbon based on two head-to-tail linkages. It can be calculated with reference to the description such as “Page 551 (2003)”.
- the MFR of the ethylene-propylene copolymer at 230 ° C. and a load of 2.16 kg is preferably 0.1 g / 10 min or more and 6 g / 10 min or less from the viewpoint of film forming property and crystal refining, and 0.3 g / 10 It is more preferably from 5 g / 10 min to 5 g / 10 min, further preferably from 0.3 g / 10 min to 2 g / 10 min, particularly preferably from 0.3 g / 10 min to 1 g / 10 min. preferable.
- the melting point of the ethylene-propylene copolymer is preferably 100 ° C. or higher, more preferably 110 ° C. or higher, further preferably 120 ° C. or higher, and more preferably 130 ° C. or higher from the viewpoint of improving the dielectric breakdown resistance of the resulting film under high temperature conditions. Particularly preferred.
- the melting point of the ethylene-propylene copolymer is preferably 170 ° C. or lower, more preferably 165 ° C. or lower, and further preferably 160 ° C. or lower from the viewpoint of improving the stretchability of the film.
- the crystallization temperature of the ethylene-propylene copolymer is preferably 85 ° C. or higher from the viewpoint of improving the dielectric breakdown resistance of the resulting film under high temperature conditions and improving the crystallinity of the resin in the film. The above is more preferable, and 90 ° C. or higher is more preferable.
- the crystallization temperature of the ethylene-propylene copolymer is preferably 110 ° C. or lower, more preferably 108 ° C. or lower, and further preferably 107 ° C. or lower from the viewpoint of improving the stretchability of the film.
- the melting point and the crystallization temperature of the ethylene-propylene copolymer can be measured using an input compensation differential scanning calorimeter (DSC) (manufactured by Perkin Elmer, Diamond DSC) under the following conditions.
- DSC differential scanning calorimeter
- Resin pellets are heat-treated at a heating rate of 20 ° C./min, and kept at a constant temperature at 280 ° C. for 5 minutes. Subsequently, cooling is performed at a temperature drop rate of 20 ° C./min, and the crystallization peak at that time is determined as the crystallization temperature. Subsequently, the sample is cooled to 30 ° C., held at a constant temperature for 5 minutes, and then heat-treated again at a temperature rising rate of 20 ° C./min. The 2nd Heating melting peak at that time can be determined as the melting point.
- the weight average molecular weight (Mw) of the ethylene-propylene copolymer is preferably from 250,000 to 800,000, more preferably from 450,000 to 700,000.
- the molecular weight distribution (Mw / Mn) of the ethylene-propylene copolymer is preferably 3 or more, 12 or less, more preferably 4 or more and 11 or less, further preferably 5 or more and 10 or less, and more preferably 5 or more. It is still more preferably 8 or less, and particularly preferably 5 or more and 6.9 or less. It is preferable to use such an ethylene-propylene copolymer because appropriate resin fluidity can be obtained at the time of biaxial stretching, and it is easy to obtain a very thin biaxially stretched propylene film having no thickness unevenness. Such polypropylene is also preferable from the viewpoint of voltage resistance of the biaxially stretched polypropylene film.
- weight average molecular weight (Mw) and number average molecular weight (Mn) can be measured by the same method as the weight average molecular weight (Mw) and number average molecular weight (Mn) of the “propylene homopolymer”.
- the content of the ethylene-propylene copolymer in the polypropylene resin is preferably 5 to 50% by mass, more preferably about 10 to 45% by mass, and further preferably about 15 to 40% by mass. 30 to 40% by mass is particularly preferable.
- the content ratio of the ethylene-propylene copolymer in the polypropylene resin is 5% by mass or more, the effect of including the ethylene-propylene copolymer appears clearly.
- it by setting it as 50 mass% or less, the fall of the heat resistance when a film is formed can be suppressed, and as a result, the dielectric breakdown resistance under high temperature can be improved.
- Two types of resin components constituting the polypropylene film of the present invention are the above-mentioned (1) propylene homopolymer (hereinafter also referred to as (1) resin) and (2) ethylene-propylene copolymer (hereinafter also referred to as (2) resin).
- the mass ratio is in the above range, the dielectric breakdown resistance at high temperatures can be further improved.
- the content of ethylene units contained in the blend resin is 7.5 mol% or less, preferably 7 mol% or less, more preferably 6 mol% or less, based on the total amount of propylene units and ethylene units detected from the film.
- the ethylene unit content in the polypropylene resin exceeds 7.5 mol%, the melting point of the obtained film is significantly lowered, and as a result, the voltage resistance of the film at high temperatures tends to be lowered.
- the content rate of the ethylene unit in polypropylene resin is a trace amount, the polypropylene film excellent in the dielectric breakdown-proof characteristic is obtained.
- the lower limit of the ethylene unit content is preferably more than zero, more preferably 0.0001 mol%, still more preferably 0.0005 mol%, still more preferably 0.001 mol%, 0.005 mol% is even more preferable.
- the ethylene unit content is preferably 4 mol% or less, more preferably 3 mol% or less, still more preferably 2 mol% or less, still more preferably 1 mol% or less, and even more preferably 0.5 mol% or less. 0.09 mol% or less is particularly preferable. In these cases, the haze of the biaxially stretched polypropylene film for capacitors is in a desired range, the element winding processability is likely to be good, and the dielectric breakdown resistance is easily improved.
- the constituent components of the polypropylene resin are a propylene homopolymer and an ethylene-propylene copolymer. Therefore, it is preferable that the polypropylene resin is a mixture of a propylene homopolymer and an ethylene-propylene copolymer in a dry or molten state.
- Examples of the mixing method include, but are not limited to, a method in which polymer powder or pellets of propylene homopolymer and ethylene-propylene copolymer are dry blended with a mixer, a method in which the polymer powder or pellets are melt-kneaded with a kneader to obtain a polypropylene resin, etc. May be mixed according to any mixing method.
- the heat of fusion of the film is preferably 90 J / g or more from the viewpoint of improving the heat resistance and voltage resistance of the film. Moreover, it is more preferable that it is 95 J / g or more, and it is still more preferable that it is 100 J / g or more. Moreover, based on the theoretical limit of a polypropylene crystal, the upper limit of the heat of fusion is 207 J / g. Furthermore, from the viewpoint of stretchability of the film, it is preferably 150 J / g or less, more preferably 140 J / g or less, and particularly preferably 120 J / g or less.
- heat of fusion of film refers to the biaxially stretched film, using the input compensation type differential scanning calorimeter (DSC) (manufactured by Perkin Elmer, Diamond DSC) in the same manner as the DSC measurement described above.
- DSC differential scanning calorimeter
- the heat treatment at 20 ° C./min can be calculated as the heat of fusion per sample weight from the area integral value of the 1st Heating melting peak at that time.
- the crystallite size of the film is preferably 16.3 nm or less, more preferably 16.0 nm or less, and further preferably 15.0 nm or less, from the viewpoints of voltage resistance, dielectric breakdown resistance, leakage current suppression, and the like of the obtained film. preferable.
- a polypropylene film with a crystallite size in the above range no current passes through the crystal, so its morphological characteristics (for example, water is difficult to penetrate into fine sand). The effect reduces the leakage current.
- heat resistance, voltage resistance, and long-term heat resistance and voltage resistance are excellent.
- the crystallite size of the film is preferably 10.0 nm or more, more preferably 11.0 nm or more, and further preferably 12.0 nm or more from the viewpoint of maintaining the mechanical strength and melting point of the polypropylene film.
- the crystallite size of the film is preferably 16.3 nm or less from the viewpoint of maintaining the mechanical strength and melting point of the polypropylene film.
- crystallite size of the film means a crystallite size calculated by using the Scherrer equation from the half width of the ⁇ crystal (040) plane reflection peak measured by the wide-angle X-ray diffraction method of the polypropylene film.
- the “crystallite size” can be determined as follows. First, wide angle X-ray diffraction of a biaxially stretched polypropylene film or a metallized film thereof is performed, and the half width of the diffraction reflection peak of the obtained ⁇ crystal (040) plane is obtained.
- the crystallite size is obtained using the Scherrer equation shown in the following equation (I).
- D K ⁇ / ( ⁇ cos ⁇ ) (I) [In formula (I), D is the crystallite size (nm), K is a constant (shape factor), ⁇ is the X-ray wavelength used (nm), ⁇ is the half-value width of the diffraction reflection peak of the ⁇ crystal (040) plane , ⁇ is the diffraction Bragg angle of the ⁇ crystal (040) plane]
- a discontinuous X-ray diffraction apparatus MiniFlex300 (trade name) manufactured by Rigaku Corporation is used. X-rays generated at an output of 30 kV and 10 mA are used.
- CuK ⁇ rays (wavelength 0.15418 nm) monochromatized by a light-receiving monochromator are collimated by a slit and irradiated to a measurement film.
- the diffraction intensity is measured by using a scintillation counter and scanning with 2 ⁇ / ⁇ interlocking using a goniometer.
- the integrated powder X-ray analysis software PDXL attached as standard to the apparatus, the half width of the diffraction reflection peak of the ⁇ crystal (040) plane is obtained using the obtained data.
- a resin other than the above-mentioned propylene homopolymer and ethylene-propylene copolymer may be mixed within a range not impairing the effects of the present invention.
- the “other resin” is not particularly limited, and a conventionally known resin that is suitable for a capacitor application can be appropriately used in the present invention.
- Other resins include, for example, polypropylene such as long chain branched polypropylene and ultrahigh molecular weight polypropylene; polyolefins composed of olefins such as ethylene, 1-butene, isobutene, 1-pentene, 1-methylpentene, or the olefin and propylene.
- Copolymer ; Copolymer of ⁇ -olefins such as ethylene-butene copolymer; Vinyl monomer-diene monomer random copolymer such as styrene-butadiene random copolymer; Styrene-butadiene-styrene block And vinyl monomers-diene monomers-vinyl monomer copolymers such as copolymers.
- the amount of such other resin is preferably 10 parts by mass or less, more preferably 5 parts by mass or less, with respect to 100 parts by mass of the polypropylene resin.
- the polypropylene film of the present invention may contain at least one additive as necessary in addition to the above-described polypropylene resin.
- the additive is not particularly limited as long as it is an additive used for a polypropylene resin.
- Such additives include, for example, stabilizers such as antioxidants, chlorine absorbers, ultraviolet absorbers, lubricants, plasticizers, flame retardants, antistatic agents, colorants and the like. You may add such an additive in a polypropylene resin within the range which does not impair the effect of this invention.
- the “antioxidant” is not particularly limited as long as it is normally used for polypropylene. Antioxidants are generally used for two purposes. One purpose is to suppress thermal deterioration and oxidation deterioration in the extruder, and the other purpose is to contribute to the suppression of deterioration and the improvement of capacitor performance in the long-term use as a film capacitor.
- An antioxidant that suppresses thermal degradation and oxidative degradation in the extruder is also referred to as a “primary agent”, and an antioxidant that contributes to improvement of capacitor performance is also referred to as a “secondary agent”. Two types of antioxidants may be used for these two purposes, and one type of antioxidant may be used for the two purposes.
- the polypropylene resin is, for example, 2,6-di-tertiary-butyl-para-cresol (generic name: BHT) as a primary agent, based on the polypropylene resin (100 mass). Part), about 1000 ppm to 4000 ppm. Most of the antioxidant for this purpose is consumed in the molding process in the extruder, and hardly remains in the film after film formation (generally, the residual amount is less than 100 ppm).
- BHT 2,6-di-tertiary-butyl-para-cresol
- a hindered phenol-based antioxidant having a carbonyl group can be used as the secondary agent.
- the hindered phenol-based antioxidant having a carbonyl group that can be used in the present invention is not particularly limited.
- triethylene glycol-bis [3- (3-tertiary-butyl-5-methyl-4-hydroxyphenyl] ) Propionate] (trade name: Irganox 245)
- 1,6-hexanediol-bis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] (trade name: Irganox 259)
- Pentaerythrityl tetrakis [3- (3,5-di-tertiarybutyl-4-hydroxyphenyl) propionate] (trade name: Irganox 1010)
- 2,2-thio-diethylenebis [3- (3 5-di-tertiary-butyl-4-hydroxyphenyl) propionate] product) :
- pentaerythryl tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate has a high molecular weight, is highly compatible with polypropylene, has low volatility and is excellent in heat resistance. ] Is most preferred.
- the hindered phenol-based antioxidant having a carbonyl group is preferably not less than 2000 ppm and not more than 7000 ppm, more preferably not less than 3000 ppm and not more than 7000 ppm, based on the total amount of polypropylene resin, considering that it is consumed in the extruder. Contained in polypropylene resin in an amount.
- the polypropylene resin does not contain a primary agent
- more hindered phenol antioxidants having a carbonyl group can be used.
- the hindered phenol-based antioxidant having a carbonyl group in the extruder increases the consumption amount of the hindered phenol-based antioxidant having a carbonyl group. It is preferable to add in the following amounts.
- the biaxially stretched polypropylene film may contain one or more hindered phenolic antioxidants (secondary agents) having a carbonyl group for the purpose of suppressing deterioration that progresses with time during long-term use.
- the content of the secondary agent in the film is preferably 1000 ppm or more and 6000 ppm or less, and preferably 1500 ppm or more and 6000 ppm or less, based on the total amount of the polypropylene resin.
- Film capacitors containing hindered phenolic antioxidants with carbonyl groups that have good compatibility with polypropylene at the molecular level and in the optimum specified range are very high temperatures while maintaining high withstand voltage performance. In the long-term test, it is preferable because the electrostatic capacity is not decreased (deterioration does not proceed) and long-term durability is improved.
- Chlorine absorbent is not particularly limited as long as it is normally used for polypropylene.
- Examples of the chlorine absorbent include metal soaps such as calcium stearate.
- ultraviolet absorber is not particularly limited as long as it is normally used for polypropylene.
- ultraviolet absorbers include benzotriazole (such as Tinuvin 328 manufactured by BASF), benzophenone (such as Cysorb UV-531 manufactured by Cytec), and hydroxybenzoate (such as UV-CHEK-AM-340 manufactured by Ferro).
- “Lubricant” is not particularly limited as long as it is usually used for polypropylene.
- examples of lubricants include primary amides (such as stearic acid amides), secondary amides (such as N-stearyl stearic acid amides), ethylene bisamides (such as N, N'-ethylene bisstearic acid amides), and the like.
- Plasticizer is not particularly limited as long as it is usually used for polypropylene.
- a plasticizer a polypropylene random copolymer etc. can be illustrated, for example.
- “Flame retardant” is not particularly limited as long as it is usually used for polypropylene.
- Examples of the flame retardant include halogen compounds, aluminum hydroxide, magnesium hydroxide, phosphates, borates, and antimony oxides.
- the “antistatic agent” is not particularly limited as long as it is usually used for polypropylene.
- examples of the antistatic agent include glycerin monoester (glycerin monostearate and the like), ethoxylated secondary amine and the like.
- the “colorant” is not particularly limited as long as it is usually used for polypropylene.
- Examples of the colorant include cadmium and chromium-containing inorganic compounds to azo and quinacridone organic pigments.
- the method for mixing the propylene homopolymer and the ethylene-propylene copolymer of the polypropylene resin used in the present invention is not particularly limited.
- a method of dry blending each resin in powder form or pellet form with a mixer or the like, powder form or pellet form examples thereof include a method of obtaining a polypropylene resin by melt-kneading each resin in a kneader.
- mixer there is no particular limitation on the mixer that can be used, and a Henschel mixer, a ribbon blender, a Banbury mixer, etc. can be used. Moreover, there is no restriction
- the kneading temperature is not particularly limited as long as even good kneading can be obtained, but it is generally in the range of about 200 to 300 ° C, preferably about 230 to 270 ° C. Kneading at an excessively high temperature is not preferable because the resin may be deteriorated. In order to suppress deterioration during resin kneading and mixing, an inert gas such as nitrogen may be purged into the kneader. The melt-kneaded resin is pelletized to an appropriate size using a known granulator, whereby mixed polypropylene raw material resin pellets can be obtained.
- the total ash due to the polymerization catalyst residue and the like contained in the polypropylene resin is as small as possible in order to improve electrical characteristics.
- the total ash content is preferably 200 ppm or less, more preferably 120 ppm or less, and particularly preferably 100 ppm or less, based on the polypropylene resin (100 parts by mass).
- the biaxially stretched polypropylene film of the present invention can be obtained by biaxially stretching the above polypropylene resin according to a usual method.
- polypropylene resin pellets, dry-mixed polypropylene resin pellets and / or powder, or mixed polypropylene resin pellets prepared by previously melt-kneading hereinafter also referred to as polypropylene resin composition
- polypropylene resin composition mixed polypropylene resin pellets prepared by previously melt-kneading
- An anti-sheet can be formed.
- the thickness of the cast original sheet is preferably about 0.05 mm to 2 mm, and more preferably about 0.1 mm to 1 mm.
- the biaxially stretched polypropylene film can be produced by subjecting the polypropylene cast original fabric sheet to stretching treatment. Stretching is performed biaxially orienting vertically and horizontally biaxially, and examples of the stretching method include simultaneous or sequential biaxial stretching methods, and a sequential biaxial stretching method is preferred.
- the sequential biaxial stretching method for example, the cast raw sheet is first maintained at a temperature of preferably about 100 to 180 ° C. (more preferably about 100 to 160 ° C.), and is passed between rolls provided with a speed difference in the flow direction. 3-7 times and immediately cool to room temperature. Subsequently, the stretched film is guided to a tenter and stretched about 3 to 11 times in the width direction at a temperature of 140 ° C. or higher (more preferably 160 ° C. or higher), and then relaxed and heat-set, and wound. The wound film can be cut to a desired product width after being subjected to an aging treatment in an atmosphere of about 20 to 45 ° C.
- the thickness of the biaxially stretched polypropylene film is preferably 1 to 30 ⁇ m, more preferably 1 to 20 ⁇ m, further preferably 1 to 15 ⁇ m, from the viewpoint of obtaining a small and large capacity capacitor element. Even more preferred is 1 to 5 ⁇ m, particularly preferred is 1 to 3 ⁇ m. It is more preferable to use a biaxially stretched polypropylene film having a thickness of 1.5 ⁇ m or more. Moreover, it is desirable that the biaxially stretched polypropylene film to be used is extremely thin, and the thickness thereof is more preferably 7 ⁇ m or less, further preferably 5 ⁇ m or less, and particularly preferably 3 ⁇ m or less. The thickness of the film can be measured in accordance with JIS-C2330 using, for example, a paper thickness measuring instrument, a micrometer (JIS-B7502) or the like.
- the surface of the biaxially stretched polypropylene film is preferably provided with an appropriate surface roughness that improves the winding properties and also improves the capacitor characteristics.
- the biaxially stretched polypropylene film of the present invention may have either a single layer structure or a multilayer structure, but preferably has a single layer structure.
- the biaxially stretched polypropylene film preferably has a surface roughness of 0.03 ⁇ m or more and 0.08 ⁇ m or less in centerline average roughness (Ra) on at least one surface, and a maximum height (Rz, It is preferable that the surface is finely roughened to 0.3 ⁇ m or more and 0.8 ⁇ m or less as Rmax) in the old JIS definition.
- Ra and Rz are in the above-mentioned preferable ranges, the surface can be a finely roughened surface, and during capacitor processing, it is difficult to cause winding wrinkles in element winding processing, and the surface can be preferably wound up. it can. Furthermore, since uniform contact is also possible between the films, the voltage resistance and the voltage resistance over a long period of time can be improved.
- Ra and Rz are, for example, stylus type surface roughness meters that are generally widely used by a method defined in JIS-B0601: 2001, etc. The value measured using a stylus type surface roughness meter (for example, a diamond needle). More specifically, “Ra” and “Rz” are, for example, a method defined in JIS-B0601: 2001 using a three-dimensional surface roughness meter Surfcom 1400D-3DF-12 manufactured by Tokyo Seimitsu Co., Ltd. It can be determined in compliance.
- various known roughening methods such as an embossing method and an etching method can be employed, and among them, a roughening using ⁇ crystals that do not require the incorporation of impurities, etc.
- the surface method is preferred.
- the production rate of ⁇ crystals can be generally controlled by changing the casting temperature and the casting speed.
- the melting / transition ratio of the ⁇ crystal can be controlled by the roll temperature in the longitudinal stretching process, and fine roughening can be achieved by selecting optimum production conditions for these two parameters of ⁇ crystal formation and its melting / transition.
- Surface property can be obtained.
- the haze of the biaxially stretched polypropylene film for capacitors according to this embodiment is preferably 1.0 to 3.0%.
- the surface of the polypropylene film has an appropriate roughness and smoothness, so that it has a good element winding workability and is easy to improve the dielectric breakdown resistance.
- the standard deviation ⁇ is 0 to 0.00. 2 is preferable. In this case, the element winding workability is further improved.
- the biaxially stretched polypropylene film can be subjected to corona discharge treatment online or offline after the stretching and heat setting processes for the purpose of enhancing the adhesive properties in the subsequent processes such as the metal vapor deposition process.
- the corona discharge treatment can be performed using a known method.
- As the atmospheric gas it is preferable to use air, carbon dioxide gas, nitrogen gas, and a mixed gas thereof.
- the biaxially stretched polypropylene film of the present invention can be provided with electrodes on one side or both sides.
- a method of forming a metal film (preferably a metal vapor deposition film) on one or both sides of a biaxially stretched polypropylene film can be mentioned.
- the method for providing the metal vapor deposition film on the biaxially stretched polypropylene film include a vacuum vapor deposition method and a sputtering method, and the vacuum vapor deposition method is preferable from the viewpoint of productivity and economy.
- a metal vapor deposition film by a vacuum vapor deposition method it carries out by selecting suitably from well-known systems, such as a crucible system and a wire system.
- a metal constituting the metal vapor deposition film it is possible to use a single metal such as zinc, lead, silver, chromium, aluminum, copper, nickel, a mixture or alloy composed of a plurality of kinds of metals selected from these metals. it can. From the standpoints of environment, economy, and film capacitor performance, especially temperature characteristics and frequency characteristics of capacitance and insulation resistance, a simple metal or metal selected from zinc and aluminum as the metal constituting the metal deposition film It is preferable to employ a mixture or an alloy.
- the film resistance of the metal vapor deposition film is preferably about 1 to 100 ⁇ / ⁇ from the viewpoint of the electrical characteristics of the capacitor. A higher value within this range is desirable from the viewpoint of self-healing (self-healing) characteristics, and the film resistance is more preferably 5 ⁇ / ⁇ or more, and further preferably 10 ⁇ / ⁇ or more. Further, from the viewpoint of safety as a capacitor element, the membrane resistance is more preferably 50 ⁇ / ⁇ or less, and further preferably 30 ⁇ / ⁇ or less.
- the film resistance of a metal vapor deposition film can be measured during metal vapor deposition, for example, by a four-terminal method known to those skilled in the art. The film resistance of the metal vapor deposition film can be adjusted by adjusting the output of the evaporation source, for example.
- an insulating margin is formed without depositing a certain width from one end of the film so that a capacitor is formed when the film is wound. Furthermore, in order to strengthen the bonding between the metallized polypropylene film and the metallicon electrode, it is preferable to form a heavy edge structure at the end opposite to the insulation margin, and the film resistance of the heavy edge is usually about 1 to 8 ⁇ / ⁇ . It is preferably about 1 to 5 ⁇ / ⁇ .
- the thickness of the metal film is not particularly limited, but is preferably 5 nm to 200 nm.
- the margin pattern of the metal vapor deposition film to be formed is not particularly limited, but from the viewpoint of the security of the film capacitor, a pattern including a so-called special margin such as a fish net pattern or a T margin pattern is preferable. It is preferable to form a metal vapor-deposited film with a pattern including a special margin on one side of a biaxially stretched polypropylene film because the security of the obtained film capacitor is improved and the breakdown and short-circuit of the film capacitor can be suppressed.
- a known method such as a tape method in which masking is performed with a tape at the time of vapor deposition or an oil method in which masking is performed by application of oil can be used without any limitation.
- the biaxially stretched polypropylene film provided with electrodes is processed into a metallized polypropylene film capacitor through a winding process of winding along the long direction of the film. That is, in the present invention, two metallized polypropylene films prepared as described above are paired and wound so that metal vapor deposition films and polypropylene films are alternately laminated. Thereafter, a metallized polypropylene film capacitor is obtained by forming a pair of metallicon electrodes on both end faces by metal spraying to produce a film capacitor element.
- the above biaxially stretched polyethylene film can be used for a capacitor.
- the film is wound.
- a pair of metallized polypropylene films may be formed so that the metal vapor-deposited portions and the polypropylene films of the polypropylene film on which the metal is vapor-deposited are alternately laminated, and further, the insulating margin portion is on the opposite side. Roll and roll. At this time, it is preferable to laminate a pair of two metallized polypropylene films with a shift of 1 to 2 mm.
- the winding machine to be used is not particularly limited, and for example, an automatic winder 3KAW-N2 manufactured by Minato Seisakusho Co., Ltd. can be used.
- the applied pressure is 2 to 20 kg / cm 2 , although the optimum value varies depending on the thickness of the polypropylene film.
- a film capacitor element is manufactured by spraying metal on both end faces of the wound material to provide metallicon electrodes.
- the metallized polypropylene film capacitor element is further subjected to a predetermined heat treatment. That is, the present invention includes a step of subjecting the film capacitor element to a heat treatment at a temperature of 80 to 125 ° C. under a vacuum of 1 hour or longer (hereinafter sometimes referred to as “thermal aging”).
- the temperature of the heat treatment is usually 80 ° C. or higher and preferably 90 ° C. or higher.
- the temperature of the heat treatment is usually 130 ° C. or lower and preferably 125 ° C. or lower.
- the temperature of the heat treatment When the temperature of the heat treatment is lower than the predetermined temperature, the above effect due to thermal aging cannot be obtained sufficiently. On the other hand, when the temperature of the heat treatment is higher than a predetermined temperature, the polypropylene film may be thermally decomposed or oxidized and deteriorated.
- the method for performing the heat treatment on the film capacitor element may be appropriately selected from known methods including, for example, a method using a thermostatic bath or a method using high-frequency induction heating in a vacuum atmosphere. Specifically, it is preferable to employ a method using a thermostatic bath.
- the time for performing the heat treatment is preferably 1 hour or more, more preferably 10 hours or more from the viewpoint of obtaining mechanical and thermal stability, but it prevents molding defects such as thermal wrinkles and molding. In this respect, it is more preferable that the time be 20 hours or less.
- a lead wire is usually welded to a metallicon electrode of a film capacitor element subjected to heat aging.
- the capacitor element can have a high capacitance.
- the biaxially stretched polypropylene film for capacitors according to the present embodiment is used, variations in film thickness and haze that affect the capacitance value of the element are small. Thereby, the variation in the capacitance value among a plurality of capacitor elements is reduced (that is, the standard deviation is small), and a capacitor element having a high capacitance can be stably supplied. Therefore, the capacitor element obtained by the method of the present invention is a small-sized and large-capacity film capacitor element based on a metallized polypropylene film, and has high voltage resistance at high temperature and long-term durability at high temperature. Is.
- the number average molecular weight (Mn), the weight average molecular weight (Mw), the molecular weight distribution (Mw / Mn), the mesopentad fraction ([mmmm]), the melt flow rate (MFR), and the ethylene unit content, which are each physical property value was measured by the following measuring method.
- Measuring instrument manufactured by Tosoh Corporation, differential refractometer (RI) built-in high-temperature GPC apparatus, HLC-8121GPC-HT type Column: manufactured by Tosoh Corporation, connecting three TSKgel GMHHR-H (20) HT Column temperature: 140 ° C
- Eluent Trichlorobenzene
- Flow rate 1.0 ml / min
- Standard polystyrene made by Tosoh Corporation was used for the production of a calibration curve, and weight average molecular weight (Mw) and number average molecular weight (Mn) were obtained in terms of polystyrene.
- Mw weight average molecular weight
- Mn number average molecular weight
- a molecular weight distribution (Mw / Mn) was obtained using the values of Mw and Mn.
- the molecular weight was converted to the molecular weight of polypropylene using a Q-factor.
- Measuring instrument manufactured by JEOL Ltd., high temperature FT-NMR JNM-ECP500 Observation nucleus: 13 C (125 MHz) Measurement temperature: 135 ° C
- the pentad fraction representing the degree of stereoregularity is a combination of a quintet (pentad) of a consensus “meso (m)” arranged in the same direction and a consensus “rasemo (r)” arranged in the same direction (mmmm or mrrm).
- Etc. was calculated as a percentage (%) from the integrated value of the intensity of each signal.
- attribution of each signal derived from mmmm, mrrm, etc. for example, the description of spectra such as “T. Hayashi et al., Polymer, 29, 138 (1988)” was referred to.
- ethylene unit content was determined using a Fourier transform nuclear magnetic resonance apparatus (FT-NMR) under the following conditions.
- FT-NMR Fourier transform nuclear magnetic resonance apparatus
- Measuring instrument Varian, high temperature FT-NMR VNMRS-400 Observation nucleus: 13 C (100.6 MHz)
- Measurement mode Reverse gated decoupling Shift standard: Propylene unit 5 chain (mmmm) (21.86 ppm)
- the ethylene unit content can be determined, for example, from “Y.-D. Zhang et al., Polym. J., 35, 551” from the signal integration value of methylene carbon based on two head-to-tail linkages. (2003) "etc. and calculated.
- ⁇ Melting point and crystallization temperature The melting point and the crystallization temperature were measured using an input compensated differential scanning calorimeter (DSC) (manufactured by Perkin Elmer, Diamond DSC) under the following conditions.
- DSC differential scanning calorimeter
- Resin pellets or film were heat-treated at a heating rate of 20 ° C./min.
- the heat of fusion of the film was determined from the 1st Heating melting peak area at that time.
- the temperature was kept at 280 ° C. for 5 minutes, followed by cooling at a rate of temperature decrease of 20 ° C./min, and the crystallization peak at that time was determined as the crystallization temperature of the resin pellets.
- the sample was cooled to 30 ° C., held at a constant temperature for 5 minutes, and then heat-treated again at a rate of temperature increase of 20 ° C./min.
- the 2nd Heating melting peak at that time was determined as the melting point of the resin pellet.
- Table 1 shows the physical properties of propylene homopolymer 1 (manufactured by Prime Polymer Co., Ltd.) and propylene homopolymer 2 (manufactured by Korea Oil Chemical Co., Ltd.) used in Examples and Comparative Examples.
- the following value is a value measured according to said measuring method in the form of raw material resin pellets.
- the physical properties of the copolymers used in the examples and comparative examples are shown in Table 2.
- the value of these copolymers shown in Table 2 is the value measured according to said measuring method in the form of the raw material resin pellet.
- the ethylene unit content in Table 2 represents the content in the ethylene-propylene copolymer.
- Copolymer 1 Propylene-ethylene copolymer (manufactured by Prime Polymer Co., Ltd.)
- Copolymer 2 Propylene-ethylene copolymer (manufactured by Prime Polymer Co., Ltd.)
- Copolymer 3 Propylene-ethylene copolymer (manufactured by ExxonMobil)
- Copolymer 4 4-methyl-1-pentene-containing copolymer (MX002O manufactured by Mitsui Chemicals, Inc.)
- Copolymer 5 Propylene-1-butene copolymer (XM7070 manufactured by Mitsui Chemicals, Inc.)
- the dry blend After the dry blend is heated and melted so that the resin temperature becomes 230 ° C., it is extruded from a T die, wound around a metal drum having a surface temperature maintained at 45 ° C., and solidified to form a cast raw sheet having a thickness of about 1 mm. Manufactured. This cast sheet is stretched 5 times in the flow direction at a temperature of 165 ° C. with a biaxial stretching apparatus (KARO IV) manufactured by Bruckner, and then immediately stretched 10 times in the transverse direction to obtain a thickness. A 20 ⁇ m biaxially stretched polypropylene film was obtained.
- KARO IV biaxial stretching apparatus
- the dry blend body which mixed the homopolymer 1 and the copolymer 1 continuously was supplied to the extruder. After the dry blend was melted at a temperature of 250 ° C., it was extruded from a T-die and wound around a metal drum maintained at a surface temperature of 92 ° C. to solidify, thereby producing a cast raw sheet having a thickness of about 125 ⁇ m.
- the cast raw sheet was stretched 5 times in the flow direction at a temperature of 140 ° C., immediately cooled to room temperature, then stretched 10 times in the lateral direction at a temperature of 165 ° C. with a tenter, and a thickness of 2.5 ⁇ m.
- a very thin biaxially oriented polypropylene film was obtained.
- the dry blend body which mixed the homopolymer 1 and the copolymer 1 continuously was supplied to the extruder. After the dry blend was melted at a temperature of 250 ° C., it was extruded from a T-die and wound around a metal drum maintained at a surface temperature of 92 ° C. to solidify, thereby producing a cast raw sheet having a thickness of about 125 ⁇ m.
- the cast original fabric sheet was stretched 5 times in the flow direction at a temperature of 140 ° C., immediately cooled to room temperature, then stretched 10 times in the lateral direction at a temperature of 165 ° C. with a tenter, and a thickness of 2.3 ⁇ m.
- a very thin biaxially oriented polypropylene film was obtained.
- the dry blend body which mixed the homopolymer 1 and the copolymer 2 continuously was supplied to the extruder. After the dry blend was melted at a temperature of 250 ° C., it was extruded from a T-die and wound around a metal drum maintained at a surface temperature of 92 ° C. to solidify, thereby producing a cast raw sheet having a thickness of about 125 ⁇ m.
- the cast original fabric sheet was stretched 5 times in the flow direction at a temperature of 140 ° C., immediately cooled to room temperature, then stretched 10 times in the lateral direction at a temperature of 165 ° C. with a tenter, and a thickness of 2.3 ⁇ m.
- a very thin biaxially oriented polypropylene film was obtained.
- Comparative Example 1 A biaxially stretched polypropylene film having a thickness of 20 ⁇ m was obtained in the same manner as in Example 1 except that the copolymer was not used and only the homopolymer 1 was used as a resin raw material.
- Table 3 shows the blending ratios of the homopolymer and the copolymer used in producing the biaxially stretched polypropylene films of Examples 1 to 8 and Comparative Examples 1 to 4. Moreover, about the obtained biaxially stretched polypropylene film, the ratio of the ethylene unit in polypropylene resin, thickness, crystallite size, heat of fusion, and dielectric breakdown voltage were evaluated with the following measuring methods. The obtained results are shown in Table 3.
- ⁇ Ratio of ethylene unit in polypropylene resin From the homopolymer and copolymer blended in each example and each comparative example, the content ratio of the ethylene unit to the total amount of propylene unit and ethylene unit detected from the film was calculated.
- ⁇ Thickness of film> The thickness of the biaxially stretched polypropylene film was measured according to JIS-C2330 using a micrometer (JIS-B7502).
- Crystallite size of the biaxially stretched polypropylene film was measured using an XRD (wide angle X-ray diffraction) apparatus according to the following.
- Measuring device Disstop X-ray diffractometer “MiniFlex300” manufactured by Rigaku Corporation X-ray generation output: 30KV, 10mA Irradiation X-ray: Monochromator monochromated CuK ⁇ ray (wavelength 0.15418 nm) Detector: scintillation counter Goniometer scan: 2 ⁇ / ⁇ interlocking scan From the obtained data, a diffraction intensity curve was obtained using an analysis computer and integrated powder X-ray analysis software PDXL attached to the equipment standard.
- the half width of the diffraction reflection peak of the ⁇ crystal (040) plane was calculated. From the half width of the diffraction reflection peak of the obtained ⁇ crystal (040) plane, the crystallite size was determined using the Scherrer formula of the following formula (I). In the present invention, the shape factor constant K is 0.94.
- D K ⁇ / ( ⁇ Cos ⁇ ) (I) [In the formula (I), D is the crystallite size (nm), K is a constant (shape factor), ⁇ is the used X-ray wavelength (nm), ⁇ is the half value of the diffraction reflection peak of the ⁇ crystal (040) plane Width, ⁇ is the diffraction Bragg angle of the ⁇ crystal (040) plane] ⁇ Heat of fusion> Using an input compensation differential scanning calorimeter (DSC) (Diamond DSC, manufactured by Perkin Elmer), the film was heat-treated at a heating rate of 20 ° C./min. The heat of fusion per sample weight was calculated from the area integrated value of the 1st Heating melting peak at that time.
- DSC differential scanning calorimeter
- ⁇ Dielectric breakdown voltage> In accordance with JIS C2330 (2001) 7.4.11.2 B method (plate electrode method), an AC power source was used, and a dielectric breakdown voltage value was measured at 100 ° C. The average breakdown voltage value (V AC ) of 12 measurements is divided by the thickness ( ⁇ m) of the film, and the average value of 8 times excluding the upper 2 times and lower 2 times is obtained as the breakdown voltage ( VAC). / ⁇ m).
- V AC The average breakdown voltage value of 12 measurements is divided by the thickness ( ⁇ m) of the film, and the average value of 8 times excluding the upper 2 times and lower 2 times is obtained as the breakdown voltage ( VAC). / ⁇ m).
- VAC breakdown voltage
- VAC breakdown voltage
- ⁇ Capacitance measurement of capacitor element> A biaxially stretched polypropylene film was subjected to aluminum deposition with a special margin deposition pattern at a deposition resistance of 15 ⁇ / ⁇ to obtain a metallized film. After slitting to a small width, the two metallized films were combined, and 1100 turns were wound using an automatic winder 3KAW-N2 manufactured by Minato Seisakusho Co., Ltd. The element wound element was heat-treated at 120 ° C. while pressing, and then sprayed with zinc metal on the element end face to obtain a flat capacitor. This capacitor element was preheated at 105 ° C. in advance, and the initial capacitance before the test was evaluated at room temperature using an LCR high tester 3522-50 manufactured by Hioki Electric Co., Ltd.
- Examples 1 to 8 since the biaxially stretched polypropylene film of the present invention has an excellent dielectric breakdown voltage even under a high temperature condition of 100 ° C., it has excellent withstand voltage characteristics at high temperatures. It became clear to have.
- Examples 1 to 8 are more in comparison with a film (Comparative Example 1) made of a resin composed only of a homopolymer of propylene that does not contain an ethylene-propylene copolymer that causes a decrease in melting point and crystallization temperature. Contrary to expectations, it can be seen that the voltage resistance at high temperatures is excellent.
- Examples 4, 6 and 7 it is possible to produce an ultrathin film having a thickness of 2.5 ⁇ m or 2.3 ⁇ m from the polypropylene resin of the present invention, and high voltage resistance is maintained. It was.
- the film obtained in Example 6 has a good element winding workability and also has improved dielectric breakdown resistance.
- the biaxially stretched polypropylene film for capacitors according to the present embodiment is a suitable material for producing a capacitor element having stable characteristics.
- the biaxially stretched polypropylene film for capacitors of the present invention is excellent in dielectric breakdown voltage even under high temperature conditions. Therefore, by manufacturing a capacitor using the film, it is expected that the withstand voltage property at a high temperature, particularly the initial withstand voltage property and the long-term withstand voltage property are improved. Furthermore, since the biaxially stretched polypropylene film for capacitors of the present invention is excellent in dielectric breakdown voltage and can be reduced in thickness, it can be preferably used for small and high-capacity capacitors that require high voltage resistance. is there.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
エチレン単位の含有率が、フィルムから検出されるプロピレン単位及びエチレン単位の総量に対して、7.5mol%以下である、
コンデンサ用二軸延伸ポリプロピレンフィルム。
エチレン-プロピレンコポリマーの重量平均分子量(Mw)が25万以上80万以下である、
項1に記載のコンデンサ用二軸延伸ポリプロピレンフィルム。
ポリプロピレン樹脂がエチレン単位を有し、エチレン単位の含有率が、フィルムから検出されるプロピレン単位及びエチレン単位の総量に対して、7.5mol%以下である、製造方法。
項10に記載の製造方法。
項12:コンデンサ用フィルムとして用いる、エチレン単位を有するポリプロピレン樹脂を含む二軸延伸ポリプロピレンフィルムであって、
エチレン単位の含有率が、フィルムから検出されるプロピレン単位及びエチレン単位の総量に対して、7.5mol%以下である、ポリプロピレンフィルムの使用。
項13:コンデンサ用フィルムとして用いる、エチレン単位を有するポリプロピレン樹脂を含む二軸延伸ポリプロピレンフィルムであって、
エチレン単位の含有率が、フィルムから検出されるプロピレン単位及びエチレン単位の総量に対して、7.5mol%以下である、ポリプロピレンフィルムの使用方法。
本発明のコンデンサ用二軸延伸ポリプロピレンフィルムを形成するために用いるポリプロピレン樹脂は、エチレン単位を有する。このようなポリプロピレン樹脂としては、エチレン単位を有するエチレン-プロピレンコポリマーを単独で使用してもよく、また、後述のように、(1)プロピレンホモポリマーと(2)エチレン-プロピレンコポリマーを含有するブレンド樹脂であってもよい。本発明のコンデンサ用二軸延伸ポリプロピレンフィルムを構成する樹脂成分は、上記(1)プロピレンホモポリマーと(2)エチレン-プロピレンコポリマーとの2種類の樹脂成分の組み合わせであることが好ましい。
該ポリプロピレン樹脂がプロピレンホモポリマーとプロピレン-エチレンコポリマーとのブレンド樹脂である場合、プロピレンホモポリマーとしては、後述する以下の物性を有するプロピレンホモポリマーであれば、1種単独で使用してもよく、また、2種以上のプロピレンホモポリマーを混合して得られるものであってもよい。
ポリプロピレン樹脂がブレンド樹脂である場合、ポリプロピレン樹脂に含まれるエチレン-プロピレンコポリマーとしては、ランダムコポリマー、ブロックコポリマー、グラフトコポリマー等のいずれのコポリマーであってもよい。これらの中でも、ランダムコポリマーであることが好ましい。
ポリプロピレン樹脂がブレンド樹脂である場合、ポリプロピレン樹脂中のエチレン-プロピレンコポリマーの含有割合としては、5~50質量%が好ましく、10~45質量%程度がより好ましく、15~40質量%程度がさらに好ましく、30~40質量%程度が特に好ましい。ポリプロピレン樹脂中のエチレン-プロピレンコポリマーの含有割合を5質量%以上に設定することにより、エチレン-プロピレンコポリマーを含有させることによる効果が明瞭に現れる。また、50質量%以下に設定することにより、フィルムを形成したときの耐熱性の低下を抑制することができ、結果として高温下での耐絶縁破壊特性を向上させることができる。また、本発明のポリプロピレンフィルムを構成する樹脂成分が上記(1)プロピレンホモポリマー(以下(1)樹脂ともいう)と(2)エチレン-プロピレンコポリマー(以下(2)樹脂ともいう)との2種類の樹脂成分の組み合わせである場合、上記(1)樹脂と(2)樹脂の質量比率は、(1)樹脂:(2)樹脂=50:50~95:5が好ましく、55:45~90:10がより好ましく、60:40~85:15がさらに好ましく、60:40~70:30が特に好ましい。当該質量比率が上記範囲内であることにより、高温下での耐絶縁破壊特性をより向上させることができる。
フィルムの融解熱量は、フィルムの耐熱性向上および耐電圧性向上のための観点から、90J/g以上であることが好ましい。また、95J/g以上であることがさらに好ましく、100J/g以上であることが一層好ましい。また、ポリプロピレン結晶の理論的限界に基づくと、融解熱量の上限は207J/gである。さらに、フィルムの延伸性の観点から、150J/g以下であることが好ましく、140J/g以下であることがさらに好ましく、120J/g以下であることが特に好ましい。
[式(I)中、Dは結晶子サイズ(nm)、Kは定数(形状因子)、λは使用X線波長(nm)、βはα晶(040)面の回折反射ピークの半価幅、θはα晶(040)面の回折ブラッグ角である]
本発明では、α晶(040)面の回折反射ピークを測定するために、より具体的には、リガク社製のディストップX線回折装置MiniFlex300(商品名)を使用する。出力30kV、10mAで発生させたX線を用いる。受光モノクローメーターで単色化したCuKα線(波長0.15418nm)をスリットで平行化し、測定フィルムに照射する。回折強度は、シンチュレーションカウンターを用い、ゴニオメーターを用いて2θ/θ連動走査して測定する。装置に標準で付属されている統合粉末X線解析ソフトウェアPDXLを用いて、得られたデータを利用して、α晶(040)面の回折反射ピークの半価幅を求める。
本発明の二軸延伸ポリプロピレンフィルムは、単層構造及び多層構造のいずれの構造であってもよいが、単層構造であることが好ましい。
本実施形態に係るコンデンサ用二軸延伸ポリプロピレンフィルムのヘーズは、1.0~3.0%であることが好ましい。ヘーズがこの範囲であることで、ポリプロピレンフィルムの表面は適度な粗さ及び滑らかさを有しているので、良好な素子巻き加工性を有し、しかも、耐絶縁破壊特性も向上しやすい。また、コンデンサ用二軸延伸ポリプロピレンフィルムの幅方向(TD方向)に沿って、例えば等間隔に数点のヘーズを測定した場合(例えば、等間隔に8点)、標準偏差σは0~0.2であることが好ましく、この場合、素子巻き加工性がより向上する。
本発明は、上記の二軸延伸ポリエチレンフィルムをコンデンサに用いることができる。
カラム:東ソー株式会社製、TSKgel GMHHR-H(20)HTを3本連結 カラム温度:140℃
溶離液:トリクロロベンゼン
流速:1.0ml/分
検量線の作製には東ソー株式会社製の標準ポリスチレンを用い、ポリスチレン換算により重量平均分子量(Mw)及び数平均分子量(Mn)を得た。このMwとMnの値を用いて分子量分布(Mw/Mn)を得た。なお、分子量はQ-ファクターを用いてポリプロピレンの分子量へ換算した。
ポリプロピレンを溶媒に溶解し、高温型フーリエ変換核磁気共鳴装置(高温FT-NMR)を用いて、以下の条件で、メソペンタッド分率([mmmm])を求めた。
観測核:13C(125MHz)
測定温度:135℃
溶媒:オルト-ジクロロベンゼン〔ODCB:ODCBと重水素化ODCBの混合溶媒(ODCB/重水素化ODCB=4/1(モル比))〕
測定モード:シングルパルスプロトンブロードバンドデカップリング
パルス幅:9.1μsec(45°パルス)
パルス間隔:5.5sec
積算回数:4500回
シフト基準:CH3(mmmm)=21.7ppm
立体規則性度を表すペンタッド分率は、同方向並びの連子「メソ(m)」と異方向の並びの連子「ラセモ(r)」の5連子(ペンタッド)の組み合わせ(mmmmやmrrm等)に由来する各シグナルの強度積分値より、百分率(%)で算出した。mmmmやmrrm等に由来する各シグナルの帰属に関し、例えば、「T.Hayashi et al.,Polymer,29巻,138頁(1988)」等のスペクトルの記載を参考とした。
JIS K 7210-1999に準拠し、温度230℃、荷重2.16kgにて測定した。
エチレン単位の含有率は、フーリエ変換核磁気共鳴装置(FT-NMR)を用いて、以下の条件で求めた。
観測核:13C(100.6MHz)
測定モード:逆ゲーテッドデカップリング
シフト基準:プロピレン単位5連鎖(mmmm)(21.86ppm)
エチレン単位の含有率(mol%)は、頭-尾結合2連鎖に基づくメチレン炭素のシグナル積分値より、例えば、「Y.-D. Zhang et al.,Polym. J.,35巻,551頁(2003)」等の記載を参考として算出した。
融点、及び結晶化温度は、入力補償型示差走査型熱量計(DSC)(Perkin Elmer社製、Diamond DSC)を用い、以下の条件で測定した。
実施例及び比較例で使用したプロピレンホモポリマー1(プライムポリマー株式会社製)、及びプロピレンホモポリマー2(大韓油化製)の物性を表1に示す。なお、下記値は、原料樹脂ペレットの形態で、上記の測定方法に従い測定した値である。
コポリマー2:プロピレン-エチレンコポリマー(プライムポリマー株式会社製)
コポリマー3:プロピレン-エチレンコポリマー(エクソンモービル社製)
コポリマー4:4-メチル―1-ペンテン含有コポリマー(三井化学(株)製のMX002O)
コポリマー5:プロピレン-1-ブテンコポリマー(三井化学(株)製のXM7070)
実施例1
ホモポリマー1とコポリマー1を、ホモポリマー1/コポリマー1=65/35(質量比)で混合したドライブレンド体を、押出機に供給した。ドライブレンド体を樹脂温度が230℃となるように加熱溶融した後、Tダイから押し出し、表面温度を45℃に保持した金属ドラムに巻きつけて固化させて、厚み約1mmのキャスト原反シートを製造した。このキャスト原反シートを、ブルックナー社製の二軸延伸装置(KARO IV)にて、165℃の温度で、流れ方向に5倍に延伸した後、直ちに横方向に10倍に延伸して、厚み20μmの二軸延伸ポリプロピレンフィルムを得た。
ホモポリマー1とコポリマー1を、ホモポリマー1/コポリマー1=95/5(質量比)で混合した以外は、実施例1と同様の方法により、厚み20μmの二軸延伸ポリプロピレンフィルムを得た。
ホモポリマー1とコポリマー1を、ホモポリマー1/コポリマー1=55/45(質量比)で混合した以外は、実施例1と同様の方法により、厚み20μmの二軸延伸ポリプロピレンフィルムを得た。
ホモポリマー1/コポリマー1=65/35(質量比)で混合したドライブレンド体について、実施例1より厚みの薄いフィルムを作製した。まず、ホモポリマー1及びコポリマー1を連続的に混合したドライブレンド体を、押出機に供給した。ドライブレンド体を250℃の温度で溶融した後、Tダイから押し出し、表面温度を92℃に保持した金属ドラムに巻きつけて固化させて、厚み約125μmのキャスト原反シートを製造した。このキャスト原反シートを140℃の温度で、流れ方向に5倍に延伸し、直ちに室温まで冷却した後、テンターにて165℃の温度で横方向に10倍に延伸して、厚み2.5μmの非常に薄い二軸延伸ポリプロピレンフィルムを得た。
コポリマー1に代えてコポリマー2を用い、ホモポリマー1とコポリマー2を、ホモポリマー1/コポリマー2=65/35(質量比)で混合した以外は、実施例1と同様の方法により、厚み20μmの二軸延伸ポリプロピレンフィルムを得た。
ホモポリマー1/コポリマー1=80/20(質量比)で混合したドライブレンド体を用い、実施例1より厚みの薄いフィルムを作製した。まず、ホモポリマー1及びコポリマー1を連続的に混合したドライブレンド体を、押出機に供給した。ドライブレンド体を250℃の温度で溶融した後、Tダイから押し出し、表面温度を92℃に保持した金属ドラムに巻きつけて固化させて、厚み約125μmのキャスト原反シートを製造した。このキャスト原反シートを140℃の温度で、流れ方向に5倍に延伸し、直ちに室温まで冷却した後、テンターにて165℃の温度で横方向に10倍に延伸して、厚み2.3μmの非常に薄い二軸延伸ポリプロピレンフィルムを得た。
ホモポリマー1/コポリマー2=95/5(質量比)で混合したドライブレンド体を用い、実施例5より厚みの薄いフィルムを作製した。まず、ホモポリマー1及びコポリマー2を連続的に混合したドライブレンド体を、押出機に供給した。ドライブレンド体を250℃の温度で溶融した後、Tダイから押し出し、表面温度を92℃に保持した金属ドラムに巻きつけて固化させて、厚み約125μmのキャスト原反シートを製造した。このキャスト原反シートを140℃の温度で、流れ方向に5倍に延伸し、直ちに室温まで冷却した後、テンターにて165℃の温度で横方向に10倍に延伸して、厚み2.3μmの非常に薄い二軸延伸ポリプロピレンフィルムを得た。
ホモポリマー1に代えてホモポリマー1とホモポリマー2を用い、ホモポリマー1/ホモポリマー2/コポリマー1=40/25/35(質量比)で混合した以外は、実施例1と同様の方法により、厚み20μmの二軸延伸ポリプロピレンフィルムを得た。
コポリマーを使用せず、ホモポリマー1のみを樹脂原料として用いた以外は、実施例1と同様の方法により、厚み20μmの二軸延伸ポリプロピレンフィルムを得た。
コポリマー1に代えてコポリマー3を用い、ホモポリマー1とコポリマー3を、ホモポリマー1/コポリマー3=65/35(質量比)で混合した以外は、実施例1と同様の方法により、厚み20μmの二軸延伸ポリプロピレンフィルムを得た。
コポリマー1に代えてコポリマー4を用い、ホモポリマー1とコポリマー4を、ホモポリマー1/コポリマー4=90/10(質量比)で混合した以外は、実施例1と同様の方法により、厚み20μmの二軸延伸ポリプロピレンフィルムを得た。
コポリマー1に代えてコポリマー5を用い、ホモポリマー1とコポリマー5を、ホモポリマー1/コポリマー5=65/35(質量比)で混合した以外は、実施例1と同様の方法により、厚み20μmの二軸延伸ポリプロピレンフィルムを得た。
各実施例及び各比較例で配合した、ホモポリマー及びコポリマーから、フィルムから検出されるプロピレン単位及びエチレン単位の総量に対するエチレン単位の含有割合を算出した。
二軸延伸ポリプロピレンフィルムの厚みは、マイクロメーター(JIS-B7502)を用いて、JIS-C2330に準拠して測定した。
二軸延伸ポリプロピレンフィルムの結晶子サイズを、XRD(広角X線回折)装置を用いて、以下に従い測定した。
X線発生出力:30KV、10mA
照射X線:モノクローメーター単色化CuKα線(波長0.15418nm)
検出器:シンチュレーションカウンター
ゴニオメーター走査:2θ/θ連動走査
得られたデータから、解析コンピューターを用い、装置標準付属の統合粉末X線解析ソフトウェアPDXLを用い、回折強度曲線を得た。
[式(I)中、Dは、結晶子サイズ(nm)、Kは定数(形状因子)、λは使用X線波長(nm)、βはα晶(040)面の回折反射ピークの半価幅、θはα晶(040)面の回折ブラッグ角である]
<融解熱量>
入力補償型示差走査型熱量計(DSC)(Perkin Elmer社製、Diamond DSC)を用い、フィルムを昇温速度20℃/分で加熱処理した。その際の1st Heating溶融ピークの面積積分値より、サンプル重量あたりの融解熱量を算出した。
JIS C2330(2001)7.4.11.2 B法(平板電極法)にならって、交流電源を使用し、100℃で、絶縁破壊電圧値を測定した。12回の測定の平均絶縁破壊電圧値(VAC)を、フィルムの厚み(μm)で割り、上位2回及び下位2回の値を除いた8回の平均値を、絶縁破壊電圧(VAC/μm)とした。
<ヘーズ測定>
JIS-K7136に準拠し、ヘーズメーター(日本電色工業株式会社製「NDH-5000」)を用いて測定した。
<コンデンサ素子の静電容量測定>
二軸延伸ポリプロピレンフィルムに、特殊マージン蒸着パターンを蒸着抵抗15Ω/□にてアルミニウム蒸着を施し、金属化フィルムを得た。小幅にスリットした後に、2枚の金属化フィルムを相合わせて、株式会社皆藤製作所製、自動巻取機3KAW-N2型を用い、1100ターン巻回を行った。素子巻きした素子は、プレスしながら120℃にて熱処理を施した後、素子端面に亜鉛金属を溶射し、扁平型コンデンサを得た。このコンデンサ素子を、予め105℃にて予熱した後、試験前の初期の静電容量を日置電機株式会社製LCRハイテスター3522-50にて、室温で評価した。
Claims (9)
- エチレン単位を有するポリプロピレン樹脂を含む二軸延伸ポリプロピレンフィルムであって、
エチレン単位の含有率が、フィルムから検出されるプロピレン単位及びエチレン単位の総量に対して、7.5mol%以下である、
コンデンサ用二軸延伸ポリプロピレンフィルム。 - ポリプロピレン樹脂がエチレン-プロピレンコポリマーを含み、
エチレン-プロピレンコポリマーの重量平均分子量(Mw)が25万以上80万以下である、
請求項1に記載のコンデンサ用二軸延伸ポリプロピレンフィルム。 - エチレン-プロピレンコポリマーの含有割合が、ポリプロピレン樹脂中、5質量%以上50質量%以下である、請求項2に記載のコンデンサ用二軸延伸ポリプロピレンフィルム。
- エチレン-プロピレンコポリマーの融点が、110℃以上170℃以下である請求項2又は3に記載のコンデンサ用二軸延伸ポリプロピレンフィルム。
- 上記エチレン-プロピレンコポリマーの結晶化温度が85℃以上110℃以下である、請求項2~4のいずれかに記載のコンデンサ用二軸延伸ポリプロピレンフィルム。
- ポリプロピレンフィルムの融解熱量が90J/g以上である、請求項1~5のいずれかに記載のコンデンサ用二軸延伸ポリプロピレンフィルム。
- ポリプロピレンフィルムの広角X線回折法により測定したα晶(040)面反射ピークの半価幅からScherrerの式を用いて算出した結晶子サイズが、10.0nm以上16.3nm以下である、請求項1~6のいずれかに記載のコンデンサ用二軸延伸ポリプロピレンフィルム。
- 二軸延伸ポリプロピレンフィルムの片面又は両面に金属膜が形成された、請求項1~7のいずれかに記載のコンデンサ用二軸延伸ポリプロピレンフィルム。
- 請求項1~8のいずれかに記載のコンデンサ用二軸延伸ポリプロピレンフィルムを用いて得られるコンデンサ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017512583A JP6766805B2 (ja) | 2015-04-15 | 2016-04-14 | コンデンサ用二軸延伸ポリプロピレンフィルム |
EP16780119.0A EP3284777A4 (en) | 2015-04-15 | 2016-04-14 | Biaxially stretched polypropylene film for capacitor |
KR1020177029682A KR20170137768A (ko) | 2015-04-15 | 2016-04-14 | 콘덴서용 2축 연신 폴리프로필렌 필름 |
CN201680021882.7A CN107531915A (zh) | 2015-04-15 | 2016-04-14 | 电容器用双轴拉伸聚丙烯薄膜 |
US15/566,379 US20180118904A1 (en) | 2015-04-15 | 2016-04-14 | Biaxially stretched polypropylene film for capacitor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015-083639 | 2015-04-15 | ||
JP2015083639 | 2015-04-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016167328A1 true WO2016167328A1 (ja) | 2016-10-20 |
Family
ID=57126271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/062038 WO2016167328A1 (ja) | 2015-04-15 | 2016-04-14 | コンデンサ用二軸延伸ポリプロピレンフィルム |
Country Status (6)
Country | Link |
---|---|
US (1) | US20180118904A1 (ja) |
EP (1) | EP3284777A4 (ja) |
JP (1) | JP6766805B2 (ja) |
KR (1) | KR20170137768A (ja) |
CN (1) | CN107531915A (ja) |
WO (1) | WO2016167328A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018186424A1 (ja) * | 2017-04-03 | 2018-10-11 | 王子ホールディングス株式会社 | ポリプロピレンフィルム、金属層一体型ポリプロピレンフィルムおよびフィルムコンデンサ |
JP2019044171A (ja) * | 2017-08-29 | 2019-03-22 | 東レ株式会社 | ポリプロピレンフィルム、金属膜積層フィルムおよびフィルムコンデンサ |
JP2020072204A (ja) * | 2017-10-31 | 2020-05-07 | 王子ホールディングス株式会社 | 樹脂フィルム、金属層一体型樹脂フィルム、及び、フィルムコンデンサ |
EP3564009A4 (en) * | 2016-12-28 | 2020-08-12 | Oji Holdings Corporation | BIAXIALLY ORIENTED POLYPROPYLENE FILM, METALLIC FILM AND CONDENSER |
WO2020246322A1 (ja) * | 2019-06-05 | 2020-12-10 | 王子ホールディングス株式会社 | ポリプロピレンフィルムロール及び金属化ポリプロピレンフィルムロール |
WO2022220248A1 (ja) * | 2021-04-12 | 2022-10-20 | 王子ホールディングス株式会社 | 金属化ポリプロピレンフィルム |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111721624B (zh) * | 2020-06-03 | 2023-06-16 | 中广核三角洲(太仓)检测技术有限公司 | 基于结晶度的核电用peek材料热老化机理评估方法 |
CN114179341A (zh) * | 2021-10-28 | 2022-03-15 | 安徽飞达电气科技有限公司 | 一种电容器用双向拉伸聚丙烯薄膜 |
CN116176018B (zh) * | 2023-02-23 | 2023-11-14 | 河北海伟电子新材料科技股份有限公司 | 一种应用于电子防监标签的聚丙烯电容薄膜及其制备方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59171625A (ja) * | 1983-03-18 | 1984-09-28 | Mitsui Petrochem Ind Ltd | 二軸延伸ポリプロピレンフイルムの製造方法及び二軸延伸フイルム |
JPH0551467A (ja) * | 1991-08-22 | 1993-03-02 | Mitsui Toatsu Chem Inc | 高温電気特性に優れたポリプロピレン二軸延伸フイルム |
JP2006083253A (ja) * | 2004-09-15 | 2006-03-30 | Mitsui Chemicals Inc | ポリプロピレン延伸フィルム |
JP2008133351A (ja) * | 2006-11-28 | 2008-06-12 | Prime Polymer:Kk | コンデンサーフィルム用プロピレン系重合体 |
JP2014531480A (ja) * | 2011-08-30 | 2014-11-27 | ボレアリス・アクチェンゲゼルシャフトBorealis Ag | キャパシタフィルムの製造方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11162779A (ja) * | 1997-11-27 | 1999-06-18 | Toray Ind Inc | コンデンサー用ポリプロピレンフィルム |
US6733898B2 (en) * | 2002-08-27 | 2004-05-11 | Sunoco Inc. | Resin compositions for producing biaxially oriented polypropylene films |
ATE474862T1 (de) * | 2004-11-25 | 2010-08-15 | Prime Polymer Co Ltd | Polypropylen und aufbringen des polypropylens auf elektrisches material |
WO2007034915A1 (ja) * | 2005-09-22 | 2007-03-29 | Japan Polypropylene Corporation | プロピレン系樹脂組成物 |
JP5089941B2 (ja) * | 2005-09-22 | 2012-12-05 | 日本ポリプロ株式会社 | 三成分よりなるプロピレン系樹脂組成物 |
JP4784279B2 (ja) * | 2005-11-17 | 2011-10-05 | 王子製紙株式会社 | コンデンサーフィルム |
EP2481767A3 (en) * | 2006-02-17 | 2012-09-05 | Toray Industries, Inc. | Biaxially oriented polypropylene film |
EP1886806B1 (en) * | 2006-07-10 | 2010-11-10 | Borealis Technology Oy | Biaxially oriented polypropylene film |
JP5061842B2 (ja) * | 2006-11-01 | 2012-10-31 | 王子製紙株式会社 | 二軸延伸ポリプロピレンフィルム |
EP1990353B1 (en) * | 2007-05-08 | 2009-08-05 | Borealis Technology Oy | Electrical insulation film |
JP5149240B2 (ja) * | 2009-06-04 | 2013-02-20 | 王子ホールディングス株式会社 | コンデンサー用二軸延伸ポリプロピレンフィルム、その金属蒸着フィルム及びキャスト原反シート |
ES2398714T3 (es) * | 2010-08-06 | 2013-03-21 | Borealis Ag | Película de BOPP con alta resistencia a la ruptura en AC |
CA2927731C (en) * | 2012-08-07 | 2017-04-04 | Borealis Ag | Process for the preparation of polypropylene with improved productivity |
JP5929838B2 (ja) * | 2013-05-30 | 2016-06-08 | 王子ホールディングス株式会社 | コンデンサー用二軸延伸ポリプロピレンフィルム |
JP6260472B2 (ja) * | 2014-06-30 | 2018-01-17 | 王子ホールディングス株式会社 | コンデンサ用二軸延伸ポリプロピレンフィルム |
-
2016
- 2016-04-14 WO PCT/JP2016/062038 patent/WO2016167328A1/ja active Application Filing
- 2016-04-14 CN CN201680021882.7A patent/CN107531915A/zh active Pending
- 2016-04-14 US US15/566,379 patent/US20180118904A1/en not_active Abandoned
- 2016-04-14 JP JP2017512583A patent/JP6766805B2/ja active Active
- 2016-04-14 EP EP16780119.0A patent/EP3284777A4/en not_active Withdrawn
- 2016-04-14 KR KR1020177029682A patent/KR20170137768A/ko not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59171625A (ja) * | 1983-03-18 | 1984-09-28 | Mitsui Petrochem Ind Ltd | 二軸延伸ポリプロピレンフイルムの製造方法及び二軸延伸フイルム |
JPH0551467A (ja) * | 1991-08-22 | 1993-03-02 | Mitsui Toatsu Chem Inc | 高温電気特性に優れたポリプロピレン二軸延伸フイルム |
JP2006083253A (ja) * | 2004-09-15 | 2006-03-30 | Mitsui Chemicals Inc | ポリプロピレン延伸フィルム |
JP2008133351A (ja) * | 2006-11-28 | 2008-06-12 | Prime Polymer:Kk | コンデンサーフィルム用プロピレン系重合体 |
JP2014531480A (ja) * | 2011-08-30 | 2014-11-27 | ボレアリス・アクチェンゲゼルシャフトBorealis Ag | キャパシタフィルムの製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3284777A4 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3564009A4 (en) * | 2016-12-28 | 2020-08-12 | Oji Holdings Corporation | BIAXIALLY ORIENTED POLYPROPYLENE FILM, METALLIC FILM AND CONDENSER |
WO2018186424A1 (ja) * | 2017-04-03 | 2018-10-11 | 王子ホールディングス株式会社 | ポリプロピレンフィルム、金属層一体型ポリプロピレンフィルムおよびフィルムコンデンサ |
JP2019044171A (ja) * | 2017-08-29 | 2019-03-22 | 東レ株式会社 | ポリプロピレンフィルム、金属膜積層フィルムおよびフィルムコンデンサ |
JP7318187B2 (ja) | 2017-08-29 | 2023-08-01 | 東レ株式会社 | ポリプロピレンフィルム、金属膜積層フィルムおよびフィルムコンデンサ |
JP2020072204A (ja) * | 2017-10-31 | 2020-05-07 | 王子ホールディングス株式会社 | 樹脂フィルム、金属層一体型樹脂フィルム、及び、フィルムコンデンサ |
JP7245026B2 (ja) | 2017-10-31 | 2023-03-23 | 王子ホールディングス株式会社 | 樹脂フィルム、金属層一体型樹脂フィルム、及び、フィルムコンデンサ |
JP7489032B2 (ja) | 2017-10-31 | 2024-05-23 | 王子ホールディングス株式会社 | 樹脂フィルム、金属層一体型樹脂フィルム、及び、フィルムコンデンサ |
WO2020246322A1 (ja) * | 2019-06-05 | 2020-12-10 | 王子ホールディングス株式会社 | ポリプロピレンフィルムロール及び金属化ポリプロピレンフィルムロール |
WO2022220248A1 (ja) * | 2021-04-12 | 2022-10-20 | 王子ホールディングス株式会社 | 金属化ポリプロピレンフィルム |
Also Published As
Publication number | Publication date |
---|---|
EP3284777A1 (en) | 2018-02-21 |
CN107531915A (zh) | 2018-01-02 |
JP6766805B2 (ja) | 2020-10-14 |
US20180118904A1 (en) | 2018-05-03 |
KR20170137768A (ko) | 2017-12-13 |
JPWO2016167328A1 (ja) | 2018-02-08 |
EP3284777A4 (en) | 2018-12-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6260472B2 (ja) | コンデンサ用二軸延伸ポリプロピレンフィルム | |
JP6766805B2 (ja) | コンデンサ用二軸延伸ポリプロピレンフィルム | |
JP6217542B2 (ja) | コンデンサ用二軸延伸ポリプロピレンフィルム | |
JP6304470B1 (ja) | 二軸延伸ポリプロピレンフィルム、コンデンサ用金属化フィルム、及び、コンデンサ | |
JP5929838B2 (ja) | コンデンサー用二軸延伸ポリプロピレンフィルム | |
WO2016051496A1 (ja) | コンデンサー用二軸延伸ポリプロピレンフィルム | |
JP6484959B2 (ja) | コンデンサ用二軸延伸ポリプロピレンフィルム | |
JP6365918B1 (ja) | 二軸延伸ポリプロピレンフィルム、金属化フィルム及びコンデンサ | |
JP6515986B2 (ja) | コンデンサ用二軸延伸ポリプロピレンフィルム | |
JP2019140396A (ja) | コンデンサ用二軸延伸ポリプロピレンフィルム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16780119 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2017512583 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2016780119 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15566379 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20177029682 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |