WO2022230961A1 - 有機絶縁体、金属張積層板および配線基板 - Google Patents
有機絶縁体、金属張積層板および配線基板 Download PDFInfo
- Publication number
- WO2022230961A1 WO2022230961A1 PCT/JP2022/019184 JP2022019184W WO2022230961A1 WO 2022230961 A1 WO2022230961 A1 WO 2022230961A1 JP 2022019184 W JP2022019184 W JP 2022019184W WO 2022230961 A1 WO2022230961 A1 WO 2022230961A1
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- WO
- WIPO (PCT)
- Prior art keywords
- organic insulator
- organic
- antioxidant
- mass
- resin
- Prior art date
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 87
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 66
- 229920005989 resin Polymers 0.000 claims abstract description 58
- 239000011347 resin Substances 0.000 claims abstract description 58
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 41
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 28
- 239000011888 foil Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 239000002530 phenolic antioxidant Substances 0.000 claims abstract description 14
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 11
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 30
- 239000004713 Cyclic olefin copolymer Substances 0.000 claims description 30
- 239000000945 filler Substances 0.000 claims description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- -1 amine compound Chemical class 0.000 claims description 14
- 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 class 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 claims description 11
- SKDGWNHUETZZCS-UHFFFAOYSA-N 2,3-ditert-butylphenol Chemical class CC(C)(C)C1=CC=CC(O)=C1C(C)(C)C SKDGWNHUETZZCS-UHFFFAOYSA-N 0.000 claims description 9
- 229920001187 thermosetting polymer Polymers 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 40
- 239000003063 flame retardant Substances 0.000 description 15
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 13
- 239000000178 monomer Substances 0.000 description 13
- 238000005259 measurement Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 239000011889 copper foil Substances 0.000 description 10
- 239000011342 resin composition Substances 0.000 description 10
- 150000002978 peroxides Chemical class 0.000 description 9
- 230000009477 glass transition Effects 0.000 description 8
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000008096 xylene Substances 0.000 description 5
- 238000000441 X-ray spectroscopy Methods 0.000 description 4
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 239000002966 varnish Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- VEBCLRKUSAGCDF-UHFFFAOYSA-N ac1mi23b Chemical compound C1C2C3C(COC(=O)C=C)CCC3C1C(COC(=O)C=C)C2 VEBCLRKUSAGCDF-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 150000001412 amines Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 description 2
- HGCIXCUEYOPUTN-UHFFFAOYSA-N cyclohexene Chemical compound C1CCC=CC1 HGCIXCUEYOPUTN-UHFFFAOYSA-N 0.000 description 2
- LPIQUOYDBNQMRZ-UHFFFAOYSA-N cyclopentene Chemical compound C1CC=CC1 LPIQUOYDBNQMRZ-UHFFFAOYSA-N 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 2
- 125000003518 norbornenyl group Chemical group C12(C=CC(CC1)C2)* 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- RRKODOZNUZCUBN-CCAGOZQPSA-N (1z,3z)-cycloocta-1,3-diene Chemical compound C1CC\C=C/C=C\C1 RRKODOZNUZCUBN-CCAGOZQPSA-N 0.000 description 1
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- YXHRTMJUSBVGMX-UHFFFAOYSA-N 4-n-butyl-2-n,4-n-bis(2,2,6,6-tetramethylpiperidin-4-yl)-2-n-[6-[(2,2,6,6-tetramethylpiperidin-4-yl)amino]hexyl]-1,3,5-triazine-2,4-diamine Chemical compound N=1C=NC(N(CCCCCCNC2CC(C)(C)NC(C)(C)C2)C2CC(C)(C)NC(C)(C)C2)=NC=1N(CCCC)C1CC(C)(C)NC(C)(C)C1 YXHRTMJUSBVGMX-UHFFFAOYSA-N 0.000 description 1
- UDMMZSJNHAWYKX-UHFFFAOYSA-N 4-phenylbicyclo[2.2.1]hept-2-ene Chemical compound C1C(C=C2)CCC21C1=CC=CC=C1 UDMMZSJNHAWYKX-UHFFFAOYSA-N 0.000 description 1
- INYHZQLKOKTDAI-UHFFFAOYSA-N 5-ethenylbicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(C=C)CC1C=C2 INYHZQLKOKTDAI-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- CFBGXYDUODCMNS-UHFFFAOYSA-N cyclobutene Chemical compound C1CC=C1 CFBGXYDUODCMNS-UHFFFAOYSA-N 0.000 description 1
- OOXWYYGXTJLWHA-UHFFFAOYSA-N cyclopropene Chemical compound C1C=C1 OOXWYYGXTJLWHA-UHFFFAOYSA-N 0.000 description 1
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- ORECYURYFJYPKY-UHFFFAOYSA-N n,n'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexane-1,6-diamine;2,4,6-trichloro-1,3,5-triazine;2,4,4-trimethylpentan-2-amine Chemical compound CC(C)(C)CC(C)(C)N.ClC1=NC(Cl)=NC(Cl)=N1.C1C(C)(C)NC(C)(C)CC1NCCCCCCNC1CC(C)(C)NC(C)(C)C1 ORECYURYFJYPKY-UHFFFAOYSA-N 0.000 description 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000000269 nucleophilic effect Effects 0.000 description 1
- OTLDLKLSNZMTTA-UHFFFAOYSA-N octahydro-1h-4,7-methanoindene-1,5-diyldimethanol Chemical compound C1C2C3C(CO)CCC3C1C(CO)C2 OTLDLKLSNZMTTA-UHFFFAOYSA-N 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 238000005143 pyrolysis gas chromatography mass spectroscopy Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XBFJAVXCNXDMBH-UHFFFAOYSA-N tetracyclo[6.2.1.1(3,6).0(2,7)]dodec-4-ene Chemical compound C1C(C23)C=CC1C3C1CC2CC1 XBFJAVXCNXDMBH-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/036—Multilayers with layers of different types
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0373—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement containing additives, e.g. fillers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4626—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials
- H05K3/4632—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials laminating thermoplastic or uncured resin sheets comprising printed circuits without added adhesive materials between the sheets
Definitions
- the present disclosure relates to organic insulators, metal-clad laminates and wiring boards using the same.
- a cyclic olefin copolymer as described in Patent Document 1 has been used as an insulating material for wiring boards and the like used in the field of such electronic components.
- Such insulating materials are used, for example, in copper-clad substrates having copper foil laminated on their surfaces and high-frequency wiring substrates.
- the organic insulator of the present disclosure has an organic resin phase as a main component, and the organic resin phase contains at least a nitrogen atom-containing antioxidant (A) and a phenolic antioxidant (B).
- a metal-clad laminate of the present disclosure includes the above organic insulator and a metal foil laminated on at least one surface of the organic insulator.
- a wiring board according to the present disclosure includes a plurality of insulating layers made of the above organic insulator, and metal foil arranged between the insulating layers.
- the organic insulator of the present disclosure contains an organic resin as a main component.
- This organic resin contains a nitrogen atom-containing antioxidant (A) and a phenolic antioxidant (B).
- the organic resin as a main component means that the ratio of the organic resin contained in the organic insulator is 60% by mass or more.
- antioxidants (A) containing nitrogen atoms include hindered amine compounds.
- a di-t-butylphenol derivative can be mentioned as a phenolic antioxidant (B).
- the di-t-butylphenol derivative is preferably a compound containing a di-t-butylhydroxyphenyl group in its structure.
- the nitrogen-based antioxidant (A) weakens its antioxidant effect or undergoes a reaction that loses its activity.
- the phenolic antioxidant (B) containing di-t-butylphenol is capable of reacting even at high temperatures and has the function of reactivating the deactivated nitrogenous antioxidant (A). Therefore, oxidation of the organic insulator can be further prevented, and increases in relative permittivity and dielectric loss tangent can be suppressed.
- the phenol-based antioxidant (B) alone has a large polarity, it is difficult to mix with the organic resin and has a weak antioxidant effect.
- the presence of the nitrogen-based antioxidant (A) and the phenol-based antioxidant (B) facilitates miscibility with the organic resin, thereby exhibiting a greater antioxidant effect.
- the organic insulator when the organic insulator is left at a high temperature of, for example, 125°C for a long period of time, it is possible to suppress oxidation of the organic resin, which is the main component of the organic insulator. Thereby, it is possible to suppress an increase in the dielectric loss tangent (Df) particularly in a high temperature environment.
- Df dielectric loss tangent
- the two antioxidants (A) and (B) in the organic insulator it is possible to suppress a decrease in the glass transition point (Tg) of the organic resin.
- the ratio (A/B) between the nitrogen-based antioxidant (A) and the phenol-based antioxidant (B) is preferably 0.5 or more and 3.1 or less in mass ratio.
- the dielectric loss tangent (Df) of the organic insulator after being left at 125° C. for 2000 hours can be reduced to 0.0045 or less.
- the ratio (A/B) between the nitrogen-based antioxidant (A) and the phenol-based antioxidant (B) is 0.5 or more and 3.0 or less in mass ratio.
- the dielectric loss tangent (Df) of the organic insulator after being left at 125° C. for 2000 hours can be reduced to 0.0038 or less.
- the total amount of the nitrogen-based antioxidant (A) and the phenol-based antioxidant (B) is 0.7 parts by mass or more and 4.5 parts by mass or less with respect to 100 parts by mass of the organic resin. is good.
- the dielectric loss tangent (Df) after the organic insulator is left at 125° C. for 2000 hours can be suppressed to 0.0045 or less.
- the total amount of the nitrogen-based antioxidant (A) and the phenol-based antioxidant (B) is 0.9 parts by mass or more and 2.1 parts by mass or less with respect to 100 parts by mass of the organic resin. good.
- the dielectric loss tangent (Df) at 125° C. after leaving the organic insulator for 2000 hours can be reduced to 0.0037 or less.
- the content of nitrogen-based antioxidant (A) and phenol-based antioxidant (B) contained in the organic resin can be measured, for example, by pyrolysis gas chromatography-mass spectrometry (GC-MS). That is, the components contained in the resin are analyzed from the gas generated by burning the organic resin at 600° C. in a helium stream.
- GC-MS pyrolysis gas chromatography-mass spectrometry
- the antioxidants (A) and (B) are contained more in the surface region than in the internal region of the organic insulator.
- the organic resin is heated in an air atmosphere, the resin and oxygen bond and the polarity becomes stronger.
- more nitrogen-based antioxidant (A) is present in the surface region of the organic resin than in the interior, bonding between the resin and oxygen in the surface region of the organic insulator can be suppressed.
- the surface region of the organic insulator includes the surface of the organic insulator and refers to a range of depth of about 20 ⁇ m from the surface.
- the internal region has a depth of more than 20 ⁇ m from the surface.
- the surface region of the organic insulator preferably has a depth from the main surface in a ratio of 0.05 to 0.3 when the thickness of the organic insulator is 1.
- the internal region of the organic insulator preferably has a thickness ratio in the range of 0.4 to 0.9 when the thickness of the organic insulator is 1.
- the total content ratio of the antioxidants (A) and (B) contained in the internal region is 1.
- the total content of the antioxidants (A) and (B) in the surface region is 2 or more.
- the total content of the antioxidants (A) and (B) in the surface region is preferably 4 or less.
- antioxidants (A) and (B) contained in the organic insulator are obtained as follows. First, the surface of the organic insulator is polished very thinly. X-ray photoelectron spectroscopy (XPS) is then performed on the new surface of the exposed organic insulator.
- XPS X-ray photoelectron spectroscopy
- the contents of the antioxidants (A) and (B) are determined by, for example, comparing the elemental counts indicated by an X-ray spectroscopy (XPS) device between the internal region and the surface region of the organic insulator.
- XPS X-ray spectroscopy
- the content of antioxidants (A) and (B) in the surface region is determined from the average value of the element counts indicated by the X-ray spectroscopic analysis (XPS) device in the range of the surface region described above.
- the content of the antioxidants (A) and (B) in the internal region is the average of the counts obtained by performing X-ray spectroscopy (XPS) at 3 to 5 locations in the central portion in the thickness direction of the organic insulator. Calculate from value.
- the portion containing a large amount of the antioxidants (A) and (B) is preferably the entire surface of the organic insulator, but it may be provided only in the portion where the properties need to be maintained.
- antioxidants (A) and (B) When obtaining the structural formulas of the antioxidants (A) and (B), it is preferable to use a Fourier transform infrared spectrophotometer (FT-IR) and a liquid chromatograph (HPLC).
- FT-IR Fourier transform infrared spectrophotometer
- HPLC liquid chromatograph
- the contents of antioxidants (A) and (B) are compared by the count number of X-ray spectroscopy (XPS). In this case, the higher the count of X-ray spectroscopy (XPS), the higher the content of the antioxidants (A) and (B), and the lower the count, the antioxidants (A) and (B).
- the content shall be low.
- antioxidants (A) and (B) are used in order to contain more of the antioxidants (A) and (B) in the surface region than in the internal region of the organic insulator, for example, when producing a laminate.
- a sheet-like molding containing a large amount of antioxidant is used.
- the antioxidants (A) and (B) are distributed in layers.
- the portion with a high content of the antioxidants (A) and (B) has a layered shape in the surface region of the organic insulator, the antioxidant (A ) and (B) can be provided.
- the volume ratio of the internal region which occupies most of the organic insulator, can be increased.
- the volume ratio of the portions with low content ratios of the antioxidants (A) and (B) increases, the decrease in the glass transition point (Tg) of the organic resin can be suppressed and the heat resistance can be enhanced.
- the thickness of the portion where the portion containing the antioxidants (A) and (B) has a high layered shape depends on the thickness of the organic insulator. , 0.05 to 0.3. Also in this case, the antioxidants (A) and (B) are preferably dispersed uniformly in the surface region and the internal region of the organic insulator. The portion where the antioxidants (A) and (B) are increased is preferably the entire surface of the organic insulator, but depending on the situation, it may be provided only in the portion where it is necessary to maintain the properties.
- the method of mixing each component including the nitrogen-based antioxidant (A) and the phenol-based antioxidant (B) when producing the organic insulator is not particularly limited.
- Mixing methods include, for example, a solution mixing method in which all components are uniformly dissolved or dispersed in a solvent, and a melt blending method performed by heating with an extruder or the like.
- Suitable solvents for use in solution mixing methods include, for example, xylene.
- the mass ratio of the solid content (resin) and solvent is not particularly limited, and is, for example, about 60:40 to 20:80.
- aromatic solvents such as toluene, benzene, and ethylbenzene, hydrocarbon solvents such as normal-hexane, cyclohexane, and methylcyclohexane, ketone solvents such as acetone, and other solvents such as tetrahydrofuran and chloroform may also be used.
- xylene may be used in combination with the other solvents listed above.
- the organic resin for example, a resin composition containing a cyclic olefin copolymer as a main component and containing a peroxide is preferable. A peroxide having a benzene ring is preferred.
- the cyclic olefin copolymer should preferably be thermosetting. When a material containing a thermosetting cyclic olefin copolymer as a main component is applied to an organic resin, an organic insulator with a low dielectric constant and low dielectric loss tangent in a high frequency region can be obtained. As for dielectric properties, for example, at 125° C., the dielectric constant at 79 GHz is 2.7 or less, and the dielectric loss tangent is 0.0045 or less.
- a cyclic olefin copolymer is a polyolefin copolymer having a cyclic structure.
- cyclic olefin copolymers are copolymers of cyclic olefins and other monomers copolymerizable with the cyclic olefins.
- the ratio of the cyclic olefin to the other monomer is not particularly limited, and for example, the cyclic olefin may be contained in an amount of about 10 to 80% by mass and the other monomer in an amount of about 20 to 90% by mass.
- Cyclic olefins include, for example, norbornene-based monomers, cyclic diene-based monomers, and vinyl alicyclic hydrocarbon-based monomers.
- Specific examples of cyclic olefins include norbornene, vinylnorbornene, phenylnorbornene, dicyclopentadiene, tetracyclododecene, cyclopropene, cyclobutene, cyclopentene, cyclohexene, cyclohexadiene, and cyclooctadiene. These cyclic olefins may be used alone or in combination of two or more.
- thermosetting cyclic olefin copolymer it is preferable to have crosslinkable functional groups in the molecule.
- crosslinkable functional group include groups in which a crosslinking reaction can proceed with radicals derived from a peroxide having a benzene ring. Examples thereof include at least one selected from the group consisting of vinyl groups, allyl groups, acrylic groups and methacrylic groups.
- the resin composition may further contain a monomer having at least two ethylenically unsaturated groups in the molecule.
- Such monomers act as crosslinkers between cyclic olefin copolymers. Since this monomer exists in the resin composition in a state with a small molecular weight, it easily enters between the cyclic olefin copolymers. Furthermore, since it is an organic molecule having two or more ethylenically unsaturated groups, it has the property of being likely to react with the crosslinkable sites of a plurality of adjacent cyclic olefin copolymers. This makes it possible to increase the glass transition point (Tg).
- Examples of monomers include tricyclodecanedimethanol diacrylate, tricyclodecanedimethanol dimethacrylate, and triallyl isocyanurate. Among these, tricyclodecanedimethanol diacrylate is preferred.
- the glass transition point (Tg) becomes 150° C. or higher, and the rate of increase in dielectric loss tangent after being left at high temperature can be reduced.
- the monomer content is preferably 1 part by mass or more and 8 parts by mass or less per 100 parts by mass of the cyclic olefin copolymer.
- the monomer is present between the cyclic olefin copolymers, and two or more ethylenically unsaturated groups form a cured product in which the cyclic olefin copolymers are strongly crosslinked. becomes possible.
- a cured product (organic insulator) having a glass transition point (Tg) of 133° C. or higher, preferably 136° C. or higher after curing.
- Tg glass transition point
- the dielectric constant (Dk) is 2.7 or less at a frequency of 79 GHz at room temperature (25° C.), and the dielectric loss tangent is 0.002 or less under the same conditions.
- Df dielectric loss tangent
- cured products can be obtained.
- thermosetting cyclic olefin copolymer thermosetting COC
- the organic insulator of the present disclosure it is possible to suppress increases in relative permittivity and dielectric loss tangent even when exposed to high temperatures in an air atmosphere. As a result, dielectric properties are stable even in high-temperature environments, so equipment using metal-clad substrates and wiring substrates equipped with this organic insulator can suppress performance deterioration even when used in high-temperature environments. and reliability can be improved.
- the above organic insulators may contain fillers (inorganic particles). Furthermore, the organic insulators described above may contain flame retardants. For example, if the dielectric properties (relative permittivity, dielectric loss tangent) of the organic insulator change significantly in either the measurement frequency or the measurement direction, the wiring board using the organic insulator as the insulation layer will have poor transmission characteristics. easily change over time. Therefore, an organic insulator that has a low relative permittivity and a low dielectric loss tangent and is less likely to change greatly both in the measurement frequency and in the measurement direction is preferable.
- a cyclic olefin copolymer having a crosslinked site with low polarity and little anisotropy and to use a filler and a flame retardant that are isotropic in shape.
- the shape of both components should preferably be a shape with an aspect ratio close to 1.
- the shape of these fillers and flame retardants is preferably spherical or nearly spherical.
- the term "nearly spherical" means that the filler or flame retardant has a curved portion in its contour when the filler or flame retardant is observed. For example, the proportion of curved portions in the contour is 80% or more.
- the filler material silica is preferable. In other words, spherical silica is preferable.
- the flame retardant one containing a bromine component is preferred. In other words, brominated flame retardants are preferred.
- the filler and the flame retardant should preferably be individually dispersed through the organic resin in the organic insulator. In particular, almost all of the flame retardant and filler should be observed as particles with the organic resin interposed therebetween. Almost all of the flame retardants and fillers are observed as particles with the organic resin sandwiched between them, which reduces the anisotropy of the dielectric properties of the organic insulator and makes it possible to increase the isotropy. Become. In this way, it is possible to obtain an organic material having a small frequency dependency of dielectric constant/dielectric loss tangent and a small characteristic difference in the plane direction and thickness direction.
- This organic insulator is made of a cured resin containing a norbornene ring, which has a small polarity and is rigid. Since the cured resin containing the norbornene ring has a three-dimensional structure, the molecules are fixed to each other, so that the molecular motion is suppressed.
- the use of a brominated flame retardant and spherical silica also contributes to the improvement of the properties of this organic insulating material. In this case, it is preferable to use a non-polar flame retardant and isotropic spherical silica that does not exhibit anisotropic properties. Furthermore, almost all of these flame retardants and silica should be dispersed through the organic resin. Thus, the anisotropy of the dielectric properties can be reduced in the organic insulator. In the case of this organic insulator, if the shape is a sheet, the difference in dielectric properties between the plane direction and the thickness direction can be reduced.
- the organic resin may also include a cured cyclic olefin copolymer having nitrogen and di-t-butylphenol structures.
- the state comprising the cured cyclic olefin copolymer with nitrogen and di-t-butylphenol structures may be intramolecular or a mixture of the two molecules.
- Conditions involving cured cyclic olefin copolymers with nitrogen and di-t-butylphenol structures can be detected by pyrolysis GC-MS.
- organic insulator organic resin
- the nucleophilic nitrogen and electrophilic phenol sites are likely to interact with each other and exist close to each other. In this way, the molecules in the organic resin are easily fixed as a steric structure. As a result, the molecules present inside the organic resin are less likely to move even when the frequency of the applied electric power changes, and exhibit a stable dielectric constant and dielectric loss tangent.
- the change in the dielectric property is small means that the change in the dielectric property is small even when the measurement frequency is different.
- the organic insulator is in the form of a sheet, for example, the change in dielectric properties is small between the planar direction (in the XY plane) and the thickness direction (Z direction). That's what it means.
- a metal-clad laminate of the present disclosure includes a metal foil laminated on at least one surface of an organic insulator.
- the metal-clad laminate has dielectric properties exhibited by the above-described organic insulator.
- the metal-clad laminate has properties such as oxidation resistance, adhesiveness with metal foil, and insulating properties that organic insulators have.
- the metal foil is not particularly limited, and examples thereof include copper foil such as electrolytic copper foil and rolled copper foil, aluminum foil, and composite foil obtained by stacking these metal foils. Among these metal foils, copper foil is preferable.
- the thickness of the metal foil is not particularly limited, and is preferably about 5 to 105 ⁇ m, for example.
- the surface roughness Ra of the metal foil is preferably, for example, 0.5 ⁇ m or less, particularly 0.2 ⁇ m or less.
- the surface roughness (Ra) is preferably 0.05 ⁇ m or more for the reason of ensuring the adhesion between the metal foil and the organic insulator.
- a metal-clad laminate is obtained by stacking a desired number of organic insulators and metal foils and molding them under heat and pressure. If the dielectric loss tangent of the metal-clad laminate 100 is, for example, 0.004 or less, sufficient electrical properties such as relative dielectric constant can be exhibited, and thus the metal-clad laminate 100 can be used, for example, as a wiring substrate for high frequencies.
- the wiring board of the present disclosure includes a plurality of insulating layers and metal foils (conductor layers) arranged between the insulating layers, and the insulating layers are preferably made of the above organic insulator.
- the wiring board also has the properties of the organic insulator, such as dielectric properties, oxidation resistance, adhesion to metal foil, flame retardancy, and insulating properties.
- the wiring board can be similarly applied to a wiring board having a cavity structure in addition to a multilayer wiring board in which insulating layers and metal foils are alternately multilayered.
- a wiring board is produced by, for example, laminating an inner layer plate in which a circuit and a through hole are formed on the metal-clad laminate described above and a prepreg, laminating a metal foil on the surface of the prepreg, and then heat (curing) and pressure-molding the laminate. can be obtained. Further, a circuit and through holes may be formed on the metal foil on the surface to form a multilayer printed wiring board.
- the wiring board is produced by, for example, the steps of preparing a resin composition to be the above-described organic insulator, forming a sheet from the resin composition to form a semi-cured insulating sheet, and forming a conductor layer on the surface of the insulating sheet. and a step of applying heat and pressure to the insulating sheet to which the metal foil is attached under predetermined conditions (temperature, pressure and atmosphere). Since the wiring board obtained in this way has an insulating layer made of, for example, the above-described organic insulator, it is suitable as a wiring board for high frequencies with excellent long-term reliability.
- organic insulator of the present disclosure will be specifically described below with reference to examples. The disclosure is not limited to these examples.
- thermosetting cyclic olefin copolymer manufactured by Mitsui Chemicals, Inc.
- crosslinkable functional groups were used as the organic resin.
- Perbutyl D registered trademark, di-t-butyl peroxide, manufactured by NOF Corporation
- the organic resin had a composition in which 1.8 parts by mass of Perbutyl D (peroxide) was added to 100 parts by mass of cyclic olefin copolymer (COC).
- Chimassorb 2020 hindered amine-based polymer, manufactured by BASF Japan
- Irganox 1010 di-t-butylphenol derivative manufactured by BASF Japan
- a nitrogen-based antioxidant (A) and a phenol-based antioxidant (B) are added to the composition obtained by adding Perbutyl D (peroxide) to the cyclic olefin copolymer, with respect to 100 parts by mass of the organic resin,
- a resin composition was prepared by blending at the ratio shown in Table 1 and stirring at room temperature (25° C.) (Sample No. 1-13).
- the obtained resin composition was dissolved in xylene to obtain a resin varnish.
- the mass ratio of the resin composition and xylene was 40:60.
- the resulting resin varnish was molded into a sheet using a bar coater and dried at 150° C. for 4 minutes to obtain a sheet-shaped molding having a thickness of 15 ⁇ m.
- the obtained sheet-shaped molding (hereinafter sometimes referred to as sheet) was cut into small pieces.
- a laminate was produced by laminating 6 pieces of these small pieces on top of each other and laminating a copper foil having a thickness of 18 ⁇ m on both sides thereof.
- the laminate was heated at 200°C for 120 minutes under a pressure of 4 MPa to obtain a copper-clad laminate having a thickness of about 120 ⁇ m.
- the copper foil was peeled off from the obtained copper-clad laminate to take out the organic insulator, and the dielectric constant Dk and dielectric loss tangent Df of the taken-out organic insulator at 79 GHz were measured by the balanced disk resonator method.
- the dielectric constant Dk and the dielectric loss tangent Df were measured for the samples initially (room temperature of 25° C.) and after being left at 125° C. for 2000 hours. Tables 1 and 2 show the results.
- DMA dynamic viscoelasticity measurement
- the adhesive strength of the copper foil was measured.
- the peel strength of the copper foil was measured by pulling the copper foil perpendicularly from the surface of the organic insulator using an autograph. The number of samples was set to 5, and the average value was obtained. Table 1 shows the results. As is clear from the results in Table 1, Sample No. 1-9 had an initial dielectric constant Dk of 2.72 or less at 79 GHz. All the samples had two glass transition points (Tg) of less than 100°C and 100°C or more, and the glass transition point (Tg) on the high temperature side of 100°C or more was 130°C or more. The peel strength was 0.5 kN/m.
- the ratio (A/B) of the nitrogen-based antioxidant (A) and the phenol-based antioxidant (B) is 0.5 or more and 3.1 or less in mass ratio.
- No. 1-9 had a dielectric constant Dk of 2.74 or less and a dielectric loss tangent Df of 0.0045 or less at 79 GHz after being left at 125° C. for 2000 hours.
- the organic resin used was a thermosetting cyclic olefin copolymer (manufactured by Mitsui Chemicals, Inc.) having a crosslinkable functional group.
- Permyl D registered trademark, dicumyl peroxide, manufactured by NOF Corporation
- the organic resin had a composition in which 1.4 parts by mass of Permyl D (peroxide) was added to 100 parts by mass of cyclic olefin copolymer (COC).
- Chimassorb 944 (hindered amine polymer, manufactured by BASF Japan) was used as the nitrogen-based antioxidant (A).
- Irganox 1010 (a di-t-butylphenol derivative manufactured by BASF Japan) was used as the phenolic antioxidant (B).
- a nitrogen-based antioxidant (A) and a phenol-based antioxidant (B) are added to the composition obtained by adding Permyl D (peroxide) to the cyclic olefin copolymer, with respect to 100 parts by mass of the organic resin, They were blended in proportions of 0.6 parts by mass and 0.3 parts by mass, respectively.
- fillers and flame retardants were added.
- a silica filler (SFP-30M manufactured by Denka) was used as the filler, and a mixture of ethylenebispentabromobenzene and pentabromophenyl ether in a mass ratio of 1:1 was used as the flame retardant.
- the amount of filler and flame retardant added was 50 parts by mass for each 100 parts by mass of the cyclic olefin copolymer.
- Example No. 14-26 This resin varnish was formed into a sheet using a bar coater and dried at 150° C. for 4 minutes to obtain a sheet having a thickness of 40 ⁇ m.
- the resulting sheet was cut into small pieces. Ten of these small pieces were superimposed and laminated, and the laminate was heated at 200° C. for 120 minutes under a pressure of 4 MPa to obtain a cured resin having a thickness of about 120 ⁇ m.
- Nitrogen and phenol detection was performed by pyrolysis GC-MS.
- the detection conditions are as follows. ⁇ Detection conditions> Heating conditions: 600°C (in a helium stream) Pyrolyzer: DOUBLESHOT PYROLIZER PY2020iD manufactured by FRONTIER LAB GC-MS (gas chromatograph mass spectrometer): QP2010Plus manufactured by Shimadzu Corporation
- the shape of the filler was observed with a microscope.
- the dispersed state of the filler was evaluated by observing the cross section of the sample with a scanning electron microscope and identifying whether or not there was agglomeration of multiple fillers in the sample. Specifically, first, the particle size of each filler (silica) present in the sample was obtained from the obtained photograph. At this time, the state in which aggregates are present means a state in which a plurality of fillers are gathered and are in contact with each other. Those extracted as aggregates had a diameter of 10 times or more the average particle diameter of the filler.
- agglomerates means that a plurality of fillers are gathered and in contact with each other, and one or more fillers whose diameter is 10 times or more the average particle diameter of the filler are included in the observed region.
- the shape of the filler is said to be spherical when the outline of the observed filler has no linear part and the entire periphery is curved, and the aspect ratio satisfies the condition of 1.3 or less.
- the aspect ratio is the ratio of the direction of the longest length (diameter) in the filler to the length of the direction perpendicular to the direction of the longest length (diameter).
- the length in the direction perpendicular to the direction indicating the longest length (diameter) is called the shortest diameter.
- the aspect ratio is the relationship of longest diameter L1/shortest diameter L2.
- a polygon is one in which two or more linear portions are found in the observed contour of the filler.
- sample No. 14 to 18 are sample Nos. Compared to 19 to 26, it can be seen that the variation in dielectric loss tangent due to frequency is smaller.
- Table 4 shows the results.
- all measurement wavelengths were 79 GHz.
- the XY direction was measured by the cavity cylindrical resonator method, and the Z direction was measured by the above-mentioned coaxial excitation balanced disk resonator method.
- a dielectric substrate sample
- the dielectric constant and dielectric loss tangent are calculated from the resonance characteristics of the resonator.
- the sample is one sheet of 5 cm square.
- a variation rate of relative permittivity in the XY and Z directions of 1% or less and a variation rate of dielectric loss tangent of 10% or less were considered good.
- the fluctuation rate was calculated from the above formula. Others are the same as the measuring method in Table 3.
- sample No. 14 to 18 are sample Nos. Compared to 19 to 26, it can be seen that the variation of the dielectric loss tangent due to the measurement direction is smaller.
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Abstract
Description
例えば、測定周波数および測定方向のいずれかで、有機絶縁体の誘電特性(比誘電率、誘電正接)の変化が大きい場合には、有機絶縁体を絶縁層に用いた配線基板は、伝送特性が経時的に変化しやすくなる。そのため、比誘電率および誘電正接が低く、測定周波数および測定方向の両方で大きく変化しにくい有機絶縁体がよい。
難燃剤としては、臭素成分を含むものがよい。つまり、臭素系の難燃剤がよい。
さらに、フィラーおよび難燃剤は有機絶縁体中において、有機樹脂を介して個々に分散している状態が良い。特に、難燃剤もフィラーもほぼすべてが有機樹脂を間に挟んで粒子状として観察される状態がよい。難燃剤およびフィラーのほぼすべてが有機樹脂を間に挟んで粒子状として観察される状態となることにより、有機絶縁体の誘電特性の異方性が低減し、等方性を高めることが可能になる。
こうして、比誘電率/誘電正接の周波数依存性が小さく、面方向厚み方向での特性差が小さい有機材料を得ることができる。
また、臭素系の難燃剤と球状のシリカを使用していることも、この有機絶縁材料の特性の向上に寄与している。この場合、難燃剤として非極性のものを用い、シリカも特性の異方性を示さないような等方性の球状シリカを用いるのが良い。さらには、これらの難燃剤およびシリカは、ほぼすべてが有機樹脂を介して分散している状態であるのがよい。
こうして、有機絶縁体内において誘電特性の異方性を低減できる。この有機絶縁体の場合、その形状がシート状である場合、平面方向と厚み方向との間における誘電特性の差を小さくできる。
このような有機絶縁体(有機樹脂)の場合、求核性の窒素と求電子性のフェノールの部位が相互作用し、近接して存在した状態になりやすい。こうして、有機樹脂内の分子が立体構造として固定されやすくなる。
このことで、有機樹脂の内部に存在する分子は、印加される電力の周波数が変化しても動きにくくなり、安定した比誘電率、誘電正接を示すようになる。
フェノール系酸化防止剤(B)としては、Irganox 1010(BASFジャパン社製のジ-t-ブチルフェノール誘導体)を用いた。
液晶ポリマー:RF-705(Panasonic社)
フッ素樹脂:ポリテトラフルオロエチレン(PTFE) (Rogers社のRO3003)
ポリフェニレンエーテル:R5410(Panasonic社)
測定結果から15GHz、79GHzの比誘電率および誘電正接の変動率を求め、比誘電率の変動率が0.5%以内で、誘電正接の変動率が10%以内を良とした。
変動率は下記式から算出し、絶対値で表示した。
変動率=[(79GHzの値-15GHzの値)/15GHz]×100
<検出条件>
加熱条件:600℃(ヘリウム気流中)
熱分解装置:FRONTIER LAB製のDOUBLESHOT PYROLIZER PY2020iD
GC-MS(ガスクロマトグラフ質量分析計):島津製作所製のQP2010Plus
フィラーの分散状態は、試料の断面を走査電子顕微鏡により観察し、試料中に複数のフィラーが凝集したものが存在するか否かの同定を行うことにより評価した。
具体的には、まず、得られた写真から試料中に存在する各フィラー(シリカ)の粒径を求めた。このとき、凝集体が存在する状態というのは、複数のフィラーが集まって互いに接触した状態となっているものとした。
凝集体として抽出したものは、その径がフィラーの平均粒径の10倍以上であるものとした。凝集体ありというのは、複数のフィラーが集まって互いに接触した状態となり、その径がフィラーの平均粒径の10倍以上であるものが、観察した領域中に1個以上含まれる場合である。フィラーの形状が球状というのは、観察したフィラーの輪郭中に直線的な箇所が無く、全周が湾曲している場合であり、アスペクト比が1.3以下の条件を満たす場合である。
XY方向およびZ方向の比誘電率の変動率が1%以内、誘電正接の変動率が10%以内を良とした。変動率は前記した式から算出した。その他は、表3の測定方法と同じである。
Claims (12)
- 有機樹脂を主成分とし、該有機樹脂に、少なくとも、窒素原子を含む酸化防止剤(A)とフェノール系酸化防止剤(B)とを含む、有機絶縁体。
- 前記窒素原子を含む酸化防止剤(A)と前記フェノール系酸化防止剤(B)との比率(A/B)が質量比で0.5以上3.1以下である、請求項1に記載の有機絶縁体。
- 前記窒素原子を含む酸化防止剤(A)と前記フェノール系酸化防止剤(B)との比率(A/B)が質量比で0.5以上3.0以下である、請求項2に記載の有機絶縁体。
- 前記窒素原子を含む酸化防止剤(A)と前記フェノール系酸化防止剤(B)との合計量が、有機樹脂100質量部に対して0.9質量部以上4.5質量部以下である、請求項1~3のいずれかに記載の有機絶縁体。
- 前記窒素原子を含む酸化防止剤(A)と、前記フェノール系酸化防止剤(B)との合計量が、有機樹脂100質量部に対して0.9質量部以上2.1質量部以下である、請求項4に記載の有機絶縁体。
- 前記窒素原子を含む酸化防止剤(A)と前記フェノール系酸化防止剤(B)とが、内部領域よりも表面領域において含有割合が高い、請求項1~5のいずれかに記載の有機絶縁体。
- 前記窒素原子を含む酸化防止剤(A)がヒンダードアミン系化合物であり、前記フェノール系酸化防止剤(B)がジ-t-ブチルフェノール誘導体である、請求項1~6のいずれかに記載の有機絶縁体。
- 前記有機樹脂が熱硬化性樹脂を含む、請求項1~7のいずれかに記載の有機絶縁体。
- 前記熱硬化性樹脂の主成分が、環状オレフィンコポリマーである、請求項8に記載の有機絶縁体。
- 球状のシリカフィラーおよび臭素系難燃剤をさらに含有する、請求項1~9のいずれかに記載の有機絶縁体。
- 請求項1~10のいずれかに記載の有機絶縁体と、該有機絶縁体の少なくとも一方の面に積層された金属箔とを備えている、金属張積層板。
- 請求項1~10のいずれかに記載の有機絶縁体により構成されている複数の絶縁層と、該絶縁層間に配置された金属箔とを備えている、配線基板。
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CN202280031704.8A CN117242533A (zh) | 2021-04-28 | 2022-04-27 | 有机绝缘体、覆金属层叠板和布线基板 |
US18/557,742 US20240215160A1 (en) | 2021-04-28 | 2022-04-27 | Organic insulator, metal-clad laminate sheet, and wiring board |
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JP2010100843A (ja) | 2008-09-29 | 2010-05-06 | Mitsui Chemicals Inc | 環状オレフィン共重合体およびその架橋体 |
JP2013071960A (ja) * | 2011-09-27 | 2013-04-22 | Sekisui Chem Co Ltd | 絶縁材料及び積層構造体 |
JP2016074220A (ja) * | 2015-11-20 | 2016-05-12 | 王子ホールディングス株式会社 | 導電性積層体、気泡または亀裂発生低減シート、および気泡または亀裂発生低減方法 |
JP2020015812A (ja) * | 2018-07-25 | 2020-01-30 | 矢崎総業株式会社 | 樹脂組成物及びこれを用いた被覆電線 |
JP2020532604A (ja) * | 2017-08-30 | 2020-11-12 | ダウ グローバル テクノロジーズ エルエルシー | 過酸化物含有ポリオレフィン配合物 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2010100843A (ja) | 2008-09-29 | 2010-05-06 | Mitsui Chemicals Inc | 環状オレフィン共重合体およびその架橋体 |
JP2013071960A (ja) * | 2011-09-27 | 2013-04-22 | Sekisui Chem Co Ltd | 絶縁材料及び積層構造体 |
JP2016074220A (ja) * | 2015-11-20 | 2016-05-12 | 王子ホールディングス株式会社 | 導電性積層体、気泡または亀裂発生低減シート、および気泡または亀裂発生低減方法 |
JP2020532604A (ja) * | 2017-08-30 | 2020-11-12 | ダウ グローバル テクノロジーズ エルエルシー | 過酸化物含有ポリオレフィン配合物 |
JP2020015812A (ja) * | 2018-07-25 | 2020-01-30 | 矢崎総業株式会社 | 樹脂組成物及びこれを用いた被覆電線 |
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US20240215160A1 (en) | 2024-06-27 |
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