JP6962321B2 - 導電性接着剤 - Google Patents
導電性接着剤 Download PDFInfo
- Publication number
- JP6962321B2 JP6962321B2 JP2018519575A JP2018519575A JP6962321B2 JP 6962321 B2 JP6962321 B2 JP 6962321B2 JP 2018519575 A JP2018519575 A JP 2018519575A JP 2018519575 A JP2018519575 A JP 2018519575A JP 6962321 B2 JP6962321 B2 JP 6962321B2
- Authority
- JP
- Japan
- Prior art keywords
- fine particles
- conductive adhesive
- metal fine
- protective layer
- amine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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- 239000000853 adhesive Substances 0.000 title claims description 96
- 230000001070 adhesive effect Effects 0.000 title claims description 96
- 239000010419 fine particle Substances 0.000 claims description 195
- 229910052751 metal Inorganic materials 0.000 claims description 136
- 239000002184 metal Substances 0.000 claims description 136
- 150000001412 amines Chemical class 0.000 claims description 123
- 239000011241 protective layer Substances 0.000 claims description 92
- 239000002245 particle Substances 0.000 claims description 91
- 125000004432 carbon atom Chemical group C* 0.000 claims description 58
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 31
- 239000000194 fatty acid Substances 0.000 claims description 31
- 229930195729 fatty acid Natural products 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 239000002904 solvent Substances 0.000 claims description 19
- 150000004665 fatty acids Chemical class 0.000 claims description 18
- 238000005245 sintering Methods 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000002923 metal particle Substances 0.000 claims description 4
- 229910001111 Fine metal Inorganic materials 0.000 claims 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 73
- 229910052709 silver Inorganic materials 0.000 description 73
- 239000004332 silver Substances 0.000 description 73
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 60
- 125000005262 alkoxyamine group Chemical group 0.000 description 43
- 239000000203 mixture Substances 0.000 description 40
- 239000011248 coating agent Substances 0.000 description 26
- 238000000576 coating method Methods 0.000 description 26
- 238000003756 stirring Methods 0.000 description 25
- -1 hydroxy fatty acids Chemical class 0.000 description 23
- 239000000463 material Substances 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 13
- 238000003786 synthesis reaction Methods 0.000 description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 12
- 229910052737 gold Inorganic materials 0.000 description 12
- 239000010931 gold Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 12
- 239000006228 supernatant Substances 0.000 description 12
- BMVXCPBXGZKUPN-UHFFFAOYSA-N 1-hexanamine Chemical compound CCCCCCN BMVXCPBXGZKUPN-UHFFFAOYSA-N 0.000 description 11
- 125000000217 alkyl group Chemical group 0.000 description 10
- 238000007747 plating Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000003495 polar organic solvent Substances 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 8
- QOHMWDJIBGVPIF-UHFFFAOYSA-N n',n'-diethylpropane-1,3-diamine Chemical compound CCN(CC)CCCN QOHMWDJIBGVPIF-UHFFFAOYSA-N 0.000 description 8
- FAXDZWQIWUSWJH-UHFFFAOYSA-N 3-methoxypropan-1-amine Chemical compound COCCCN FAXDZWQIWUSWJH-UHFFFAOYSA-N 0.000 description 7
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 description 7
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 description 7
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 7
- 230000001965 increasing effect Effects 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 229940116411 terpineol Drugs 0.000 description 7
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 6
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 6
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 239000005642 Oleic acid Substances 0.000 description 6
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 6
- 235000021313 oleic acid Nutrition 0.000 description 6
- XFNJVJPLKCPIBV-UHFFFAOYSA-N trimethylenediamine Chemical compound NCCCN XFNJVJPLKCPIBV-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 150000001298 alcohols Chemical class 0.000 description 5
- IUNMPGNGSSIWFP-UHFFFAOYSA-N dimethylaminopropylamine Chemical compound CN(C)CCCN IUNMPGNGSSIWFP-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- XNGYKPINNDWGGF-UHFFFAOYSA-L silver oxalate Chemical compound [Ag+].[Ag+].[O-]C(=O)C([O-])=O XNGYKPINNDWGGF-UHFFFAOYSA-L 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 4
- VHYUNSUGCNKWSO-UHFFFAOYSA-N 3-propan-2-yloxypropan-1-amine Chemical compound CC(C)OCCCN VHYUNSUGCNKWSO-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 125000002947 alkylene group Chemical group 0.000 description 4
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 4
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 238000004817 gas chromatography Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000005979 thermal decomposition reaction Methods 0.000 description 4
- MUCMKTPAZLSKTL-UHFFFAOYSA-N (3RS)-3-hydroxydodecanoic acid Natural products CCCCCCCCCC(O)CC(O)=O MUCMKTPAZLSKTL-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UTOXFQVLOTVLSD-UHFFFAOYSA-N 3-propoxypropan-1-amine Chemical compound CCCOCCCN UTOXFQVLOTVLSD-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 150000003141 primary amines Chemical class 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- XBUXARJOYUQNTC-UHFFFAOYSA-N ()-3-Hydroxynonanoic acid Chemical compound CCCCCCC(O)CC(O)=O XBUXARJOYUQNTC-UHFFFAOYSA-N 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- 229940114072 12-hydroxystearic acid Drugs 0.000 description 2
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 description 2
- OHJYHAOODFPJOD-UHFFFAOYSA-N 2-(2-ethylhexoxy)ethanol Chemical compound CCCCC(CC)COCCO OHJYHAOODFPJOD-UHFFFAOYSA-N 0.000 description 2
- BFBKUYFMLNOLOQ-UHFFFAOYSA-N 2-butoxyethanamine Chemical compound CCCCOCCN BFBKUYFMLNOLOQ-UHFFFAOYSA-N 0.000 description 2
- BPGIOCZAQDIBPI-UHFFFAOYSA-N 2-ethoxyethanamine Chemical compound CCOCCN BPGIOCZAQDIBPI-UHFFFAOYSA-N 0.000 description 2
- CPLYLXYEVLGWFJ-UHFFFAOYSA-N 2-hydroxyarachidic acid Chemical compound CCCCCCCCCCCCCCCCCCC(O)C(O)=O CPLYLXYEVLGWFJ-UHFFFAOYSA-N 0.000 description 2
- RPGJJWLCCOPDAZ-UHFFFAOYSA-N 2-hydroxybehenic acid Chemical compound CCCCCCCCCCCCCCCCCCCCC(O)C(O)=O RPGJJWLCCOPDAZ-UHFFFAOYSA-N 0.000 description 2
- GHPVDCPCKSNJDR-UHFFFAOYSA-N 2-hydroxydecanoic acid Chemical compound CCCCCCCCC(O)C(O)=O GHPVDCPCKSNJDR-UHFFFAOYSA-N 0.000 description 2
- JGHSBPIZNUXPLA-UHFFFAOYSA-N 2-hydroxyhexadecanoic acid Chemical compound CCCCCCCCCCCCCCC(O)C(O)=O JGHSBPIZNUXPLA-UHFFFAOYSA-N 0.000 description 2
- JYZJYKOZGGEXSX-UHFFFAOYSA-N 2-hydroxymyristic acid Chemical compound CCCCCCCCCCCCC(O)C(O)=O JYZJYKOZGGEXSX-UHFFFAOYSA-N 0.000 description 2
- KIHBGTRZFAVZRV-UHFFFAOYSA-N 2-hydroxyoctadecanoic acid Chemical compound CCCCCCCCCCCCCCCCC(O)C(O)=O KIHBGTRZFAVZRV-UHFFFAOYSA-N 0.000 description 2
- JZWLIRVAYJRWLN-UHFFFAOYSA-N 2-hydroxytricosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)C(O)=O JZWLIRVAYJRWLN-UHFFFAOYSA-N 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- KDSNLYIMUZNERS-UHFFFAOYSA-N 2-methylpropanamine Chemical compound CC(C)CN KDSNLYIMUZNERS-UHFFFAOYSA-N 0.000 description 2
- USECIYVEPXUVHT-UHFFFAOYSA-N 2-propan-2-yloxyethanamine Chemical compound CC(C)OCCN USECIYVEPXUVHT-UHFFFAOYSA-N 0.000 description 2
- HMWXCSCBUXKXSA-UHFFFAOYSA-N 2-propoxyethanamine Chemical compound CCCOCCN HMWXCSCBUXKXSA-UHFFFAOYSA-N 0.000 description 2
- IBPVZXPSTLXWCG-UHFFFAOYSA-N 22-hydroxydocosanoic acid Chemical compound OCCCCCCCCCCCCCCCCCCCCCC(O)=O IBPVZXPSTLXWCG-UHFFFAOYSA-N 0.000 description 2
- CWSNHZHHWHLJIM-UHFFFAOYSA-N 3-Hydroxytridecanoic acid Chemical compound CCCCCCCCCCC(O)CC(O)=O CWSNHZHHWHLJIM-UHFFFAOYSA-N 0.000 description 2
- LAIUFBWHERIJIH-UHFFFAOYSA-N 3-Methylheptane Chemical compound CCCCC(C)CC LAIUFBWHERIJIH-UHFFFAOYSA-N 0.000 description 2
- LPUBRQWGZPPVBS-UHFFFAOYSA-N 3-butoxypropan-1-amine Chemical compound CCCCOCCCN LPUBRQWGZPPVBS-UHFFFAOYSA-N 0.000 description 2
- SOYBEXQHNURCGE-UHFFFAOYSA-N 3-ethoxypropan-1-amine Chemical compound CCOCCCN SOYBEXQHNURCGE-UHFFFAOYSA-N 0.000 description 2
- FYSSBMZUBSBFJL-UHFFFAOYSA-N 3-hydroxydecanoic acid Chemical compound CCCCCCCC(O)CC(O)=O FYSSBMZUBSBFJL-UHFFFAOYSA-N 0.000 description 2
- FWZUXWSQLNHYIC-UHFFFAOYSA-N 3-hydroxyheptadecanoic acid Chemical compound CCCCCCCCCCCCCCC(O)CC(O)=O FWZUXWSQLNHYIC-UHFFFAOYSA-N 0.000 description 2
- POMQYTSPMKEQNB-UHFFFAOYSA-N 3-hydroxyoctadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)CC(O)=O POMQYTSPMKEQNB-UHFFFAOYSA-N 0.000 description 2
- NDPLAKGOSZHTPH-UHFFFAOYSA-N 3-hydroxyoctanoic acid Chemical compound CCCCCC(O)CC(O)=O NDPLAKGOSZHTPH-UHFFFAOYSA-N 0.000 description 2
- CBWALJHXHCJYTE-UHFFFAOYSA-N 3-hydroxypalmitic acid Chemical compound CCCCCCCCCCCCCC(O)CC(O)=O CBWALJHXHCJYTE-UHFFFAOYSA-N 0.000 description 2
- FARPMBPKLYEDIL-UHFFFAOYSA-N 3-hydroxyundecanoic acid Chemical compound CCCCCCCCC(O)CC(O)=O FARPMBPKLYEDIL-UHFFFAOYSA-N 0.000 description 2
- JSGVZVOGOQILFM-UHFFFAOYSA-N 3-methoxy-1-butanol Chemical compound COC(C)CCO JSGVZVOGOQILFM-UHFFFAOYSA-N 0.000 description 2
- MFKRHJVUCZRDTF-UHFFFAOYSA-N 3-methoxy-3-methylbutan-1-ol Chemical compound COC(C)(C)CCO MFKRHJVUCZRDTF-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- HTJDQJBWANPRPF-UHFFFAOYSA-N Cyclopropylamine Chemical compound NC1CC1 HTJDQJBWANPRPF-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- WJYIASZWHGOTOU-UHFFFAOYSA-N Heptylamine Chemical compound CCCCCCCN WJYIASZWHGOTOU-UHFFFAOYSA-N 0.000 description 2
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- VHRGRCVQAFMJIZ-UHFFFAOYSA-N cadaverine Chemical compound NCCCCCN VHRGRCVQAFMJIZ-UHFFFAOYSA-N 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- VXVVUHQULXCUPF-UHFFFAOYSA-N cycloheptanamine Chemical compound NC1CCCCCC1 VXVVUHQULXCUPF-UHFFFAOYSA-N 0.000 description 2
- NZNMSOFKMUBTKW-UHFFFAOYSA-N cyclohexanecarboxylic acid Chemical compound OC(=O)C1CCCCC1 NZNMSOFKMUBTKW-UHFFFAOYSA-N 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 2
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 2
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- BMFVGAAISNGQNM-UHFFFAOYSA-N isopentylamine Chemical compound CC(C)CCN BMFVGAAISNGQNM-UHFFFAOYSA-N 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229960004488 linolenic acid Drugs 0.000 description 2
- 239000002082 metal nanoparticle Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- GVWISOJSERXQBM-UHFFFAOYSA-N n-methylpropan-1-amine Chemical compound CCCNC GVWISOJSERXQBM-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
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- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
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- C—CHEMISTRY; METALLURGY
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- H01B1/20—Conductive material dispersed in non-conductive organic material
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- C22C—ALLOYS
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Description
しかしながら、接合材料中に20nm程度の粒子を多く配合した場合、膜厚が厚くなるに従って塗膜に応力が発生し、その結果として割れや欠けが生じる。このことから、塗膜の応力が少ない材料の開発が求められている。
NH2−R2−O−R1 …(1)
[式中、R1は炭素数1〜4のアルキル基を示し、R2は炭素数1〜4のアルキレン基を示す。]
さらに、このような焼結体は、高い導電性を備え、接着性に優れることも見出した。本発明は、このような知見に基づいて、さらに検討を重ねることにより完成したものである。
項1. アミンを含む保護層を備え、平均粒子径が30nm〜300nmである金属微粒子Aを含有し、
前記アミンは、炭素数5〜7のモノアルキルアミン及び/又は下記一般式(1)で表されるアルコキシアミンを含み、
NH2−R2−O−R1 …(1)
[式中、R1は炭素数1〜4のアルキル基を示し、R2は炭素数1〜4のアルキレン基を示す。]
前記保護層において、前記炭素数5〜7のモノアルキルアミン及び/又は前記一般式(1)で表されるアルコキシアミンと、これらとは異なるアミンとの比率が、100:0〜10:90の範囲内にある、導電性接着剤。
項2. 前記保護層が、さらに脂肪酸を含む、項1に記載の導電性接着剤。
項3. 溶媒をさらに含む、項1又は2に記載の導電性接着剤。
項4. 項1〜3のいずれかに記載の導電性接着剤の焼結体。
項5. 項4に記載の焼結体により部材間が接着された部分を備えている、回路又は装置。
項6. アミンを含む保護層を備え、平均粒子径が30nm〜300nmである金属微粒子Aを混合する工程を備える、導電性接着剤の製造方法であって、
前記アミンが炭素数5〜7のモノアルキルアミン及び/又は下記一般式(1)で表されるアルコキシアミンを含み、
NH2−R2−O−R1 …(1)
[式中、R1は炭素数1〜4のアルキル基を示し、R2は炭素数1〜4のアルキレン基を示す。]
前記保護層において、前記炭素数5〜7のモノアルキルアミン及び/又は前記一般式(1)で表されるアルコキシアミンと、これらとは異なるアミンとの比率が、100:0〜10:90の範囲内にある、前記金属微粒子Aを用いる、導電性接着剤の製造方法。
項7. アミンを含む保護層を備え、平均粒子径が30nm〜300nmである金属微粒子を準備する工程と、
当該金属微粒子の保護層に含まれるアミンと、炭素数5〜7のモノアルキルアミン及び一般式(1)で表されるアルコキシアミンとを置換して、炭素数5〜7のモノアルキルアミン及び/又は前記一般式(1)で表されるアルコキシアミンと、これらとは異なるアミンとの比率が、100:0〜10:90の範囲内となるように調整し、前記金属微粒子Aを調製する工程と、
をさらに備える、項6に記載の導電性接着剤の製造方法。
項8. 項1〜6のいずれかに記載の導電性接着剤を部材間に配置する工程と、
前記導電性接着剤を加熱して焼結させる工程と、
を備える、部材の接着方法。
NH2−R2−O−R1 …(1)
[式中、R1は炭素数1〜4のアルキル基を示し、R2は炭素数1〜4のアルキレン基を示す。]
本発明の導電性接着剤は、前述の金属微粒子Aを所定の割合で含んでいる。
本発明の金属微粒子Aは、アミンを含む保護層を備えており、平均粒子径が30nm〜300nmである。後述の通り、金属微粒子Aは、金属により構成された粒子(金属粒子)の表層に、当該保護層を有している。
混合した金属微粒子の平均粒子径=2×((A/R1 2+B/R2 2)/(A/R1 3+B/R2 3))…(A)
[式中、小さい平均粒子径の金属微粒子:大きい平均粒子径の金属微粒子の比率をA:B、小さい平均粒子径の金属微粒子の半径をR1、大きい平均粒子径の金属微粒子の半径をR2で表す。]
混合した金属微粒子の平均粒子径=2×((A/R1 2+B/R2 2+C/R3 2)/(A/R1 3+B/R2 3+C/R3 3))…(B)
[式中、小さい平均粒子径の金属微粒子:中間の平均粒子径の金属微粒子:大きい平均粒子径の金属微粒子の比率をA:B:C、小さい平均粒子径の金属微粒子の半径をR1、中間の平均粒子径の金属微粒子の半径をR2、大きい平均粒子径の金属微粒子の半径をR3で表す。]
保護層における脂肪酸としては、特に制限されないが、好ましくはアルキル基の炭素数が3以上18以下の脂肪酸、より好ましくはアルキル基の炭素数が4以上18以下の脂肪酸が挙げられる。脂肪酸の好ましい具体例としては、酢酸、プロピオン酸、酪酸、吉草酸、カプロン酸、カプリル酸、2−エチルヘキサン酸、カプリン酸、ラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、オレイン酸、リノール酸、α−リノレン酸等が挙げられる。また、脂肪酸の具体例としては、シクロヘキサンカルボン酸のような環状アルキルカルボン酸等も挙げられる。これらの中でも、導電性接着剤の焼結体の機械的強度を効果的に高める観点から、カプロン酸、2−エチルヘキシル酸、オレイン酸、リノール酸、α−リノレン酸が好ましい。保護層における脂肪酸は、1種類の脂肪酸から構成されていてもよいし、2種類以上の脂肪酸により構成されていてもよい。
金属微粒子Aの保護層に含まれるアミンは、C5−7モノアルキルアミン及びアルコキシアミン(1)の少なくとも一方を含んでいることを特徴とする。保護層に含まれるアミンとしては、C5−7モノアルキルアミン(特には、炭素数6のモノアルキルアミンが好ましい)及びアルコキシアミン(1)の少なくとも一方を含むものであれば、特に問題なく用いることができる。なお、保護層中におけるアミンは、C5−7モノアルキルアミン及びアルコキシアミン(1)の少なくとも一方のみから形成されていてもよく、それ以外のアミンを含有していてもよい。
また、3−イソプロポキシプロピルアミン、イソブトキシプロピルアミン等のエーテルアミンも例示できる。
本発明の導電性接着剤は、金属微粒子Aに加えて、さらに溶媒を含むことが好ましい。溶媒を含むことにより、流動性が高まり、本発明の導電性接着剤を所望の場所に配置しやすくなる。
本発明に用いる金属微粒子A(例えば、銀微粒子)の製造方法の一例を以下に示す。
「2.金属微粒子Aの製造方法」の欄で述べた保護層における各アミンの前記比率(C5−7モノアルキルアミン及び/又はアルコキシアミン(1)と、これらとは異なるアミンとの比率)が、上記範囲外となるように調整して得られた金属微粒子の当該比率が、上記範囲内となるように調整(置換)する方法について、述べる。
本発明の導電性接着剤の焼結体は、前述の「1.導電性接着剤」で詳述した本発明の導電性接着剤を焼結することにより得られる。本発明の導電性接着剤の焼結体においては、導電性接着剤の保護層を構成している成分が、焼結の際の高熱により、ほとんどが離脱しており、焼結体は、実質的に金属により構成されている。
本発明の回路又は装置は、それぞれ、本発明の焼結体により部材間が接着された部分を備えている。すなわち、本発明の回路又は装置は、前述の「1.導電性接着剤」で詳述した本発明の導電性接着剤を、回路又は装置の部材間に配置し、導電性接着剤を焼結させて、部材間を接着したものである。
・シュウ酸銀((COOAg)2)特許文献1(特許第5574761号公報)に記載の方法で合成した。
・オレイン酸(和光純薬工業株式会社製)
・N,N−ジメチル−1,3−ジアミノプロパン(和光純薬工業株式会社製)
・N,N−ジエチル−1,3−ジアミノプロパン(和光純薬工業株式会社製)
・n−ヘキシルアミン(炭素数6、和光純薬工業株式会社製)
・n−プロピルアミン(炭素数3、和光純薬工業株式会社製)
・n−ブチルアミン(炭素数4、和光純薬工業株式会社製)
・3−メトキシプロピルアミン(炭素数4、和光純薬工業株式会社製)
・2‐(2−エチルへキシルオキシ)エタノール(和光純薬工業株式会社製)
・ブタノール(和光純薬工業株式会社製)
・ペンタノール(和光純薬工業株式会社製)
銀微粒子1gに対して、メタノール4gを添加し、1分間撹拌した。その後、撹拌しながら濃塩酸100mgを添加し、さらに10分間撹拌を続け、保護層を遊離させた。さらに撹拌を続けながら、48%水酸化ナトリウム水溶液を150mg添加し、pH>7とした。その固液混合物を濾過することで、保護層に含まれるアミンを抽出したメタノール溶液が得られ、ガスクロマトグラフィー用の試料とした。その試料をガスクロマトグラフィー(島津製作所製 GC−2010、カラム:RESTEK製 Rtx−5 Amine)を用いて分析を行い、得られたピーク面積比より保護層に含まれるアミンの比率(GC%)の定量を行った。結果を表1−3に示す。
各実施例及び比較例で得られた各塗膜のせん断強度は、ボンドテスター(西進商事製SS30−WD)を用いてダイシェアテストを実施して測定した。
各実施例及び比較例で得られた各塗膜の表面を目視で観察し、塗膜の割れや欠けの有無を評価した。
磁気撹拌子を入れた50mLガラス製遠沈管に、オレイン酸(0.1g)、N,N−ジエチル−1,3−ジアミノプロパン(3.25g)、及びペンタノール(4.0g)を投入し、1分間程度攪拌したのち、シュウ酸銀(4.0g)を投入し、約10分間攪拌することで、銀微粒子調製用組成物を得た。その後、アルミブロックを備えたホットスターラー(小池精密機器製作所製HHE−19G−U)上に、これらのガラス製遠沈管を立てて設置し、40℃で30分間攪拌し、さらに、90℃で30分間攪拌した。放冷後、磁気撹拌子を取り出し、各組成物にメタノール15gを添加してボルテックスミキサーで攪拌した後、遠心分離機(日立工機製CF7D2)にて3000rpm(約1600×G)で1分間の遠沈操作を実施し、遠沈管を傾けることにより上澄みを除去した。メタノール15gの添加、撹拌、遠心分離、及び上澄み除去の工程を2回繰り返し、製造された銀微粒子1を回収した。合成例1で得られた銀微粒子1を、走査型電子顕微鏡(日立ハイテク製S−4500)にて観察し、画像に含まれる任意の30個の粒子の長辺の長さを測定して、平均値を求めた。平均粒子径は200nmであった。
合成例1で得られた銀微粒子1の分散液(メタノール溶液)を用いて、n−ヘキシルアミン(銀微粒子1Aの調製に使用)、メトキシプロピルアミン(銀微粒子1Bの調製に使用)の各アミンを銀微粒子1の質量の3倍量を添加し、室温で4時間撹拌した。撹拌後、磁気撹拌子を取り出し、各組成物にメタノール15gを添加してボルテックスミキサーで攪拌した後、遠心分離機(日立工機製CF7D2)にて3000rpm(約1600×G)で1分間の遠沈操作を実施し、遠沈管を傾けることにより上澄みを除去した。メタノール15gの添加、撹拌、遠心分離、及び上澄み除去の工程を2回繰り返し、保護層におけるアミンの比率を調整(置換)した銀微粒子1A,1Bを回収した。なお、平均粒子径は変化しなかった。
実施例1では銀微粒子1A、実施例2では銀微粒子1Bを用い、それぞれ、総質量の10%相当のテルピネオールを添加し、各分散液を得た。この液をクラボウ社製のマゼルスターを用い、2回撹拌優先モードにて混合し、各導電性接着剤を調製した。
磁気撹拌子を入れた50mLガラス製遠沈管に、オレイン酸(0.1g)、N,N−ジエチル−1,3−ジアミノプロパン(3.25g)、及びブタノール(6.0g)を投入し、1分間程度攪拌したのち、シュウ酸銀(4.0g)を投入し、約10分間攪拌することで、銀微粒子調製用組成物を得た。その後、アルミブロックを備えたホットスターラー(小池精密機器製作所製HHE−19G−U)上に、これらのガラス製遠沈管を立てて設置し、40℃で30分間攪拌し、さらに、90℃で30分間攪拌した。放冷後、磁気撹拌子を取り出し、各組成物にメタノール15gを添加してボルテックスミキサーで攪拌した後、遠心分離機(日立工機製CF7D2)にて3000rpm(約1600×G)で1分間の遠沈操作を実施し、遠沈管を傾けることにより上澄みを除去した。メタノール15gの添加、撹拌、遠心分離、及び上澄み除去の工程を2回繰り返し、製造された銀微粒子2を回収した。合成例2で得られた銀微粒子2を、走査型電子顕微鏡(日立ハイテク製S−4500)にて観察し、画像に含まれる任意の30個の粒子の長辺の長さを測定して、平均値を求めた。平均粒子径は75nmであった。なお、合成例2で得られた銀微粒子2は、銀微粒子2Cとして、実施例に用いた。
合成例2で得られた銀微粒子2の分散液(メタノール溶液)を用いて、n−ヘキシルアミン(銀微粒子2Aの調製に使用)、メトキシプロピルアミン(銀微粒子2Bの調製に使用)、n−ブチルアミン(銀微粒子2Dの調製に使用)、n−プロピルアミン(銀微粒子2Eの調製に使用)の各アミンを銀微粒子2の質量の3倍量を添加し、室温で4時間撹拌した。撹拌後、磁気撹拌子を取り出し、各組成物にメタノール15gを添加してボルテックスミキサーで攪拌した後、遠心分離機(日立工機製CF7D2)にて3000rpm(約1600×G)で1分間の遠沈操作を実施し、遠沈管を傾けることにより上澄みを除去した。メタノール15gの添加、撹拌、遠心分離、及び上澄み除去の工程を2回繰り返し、保護層における各アミンの比率を調整(置換)した銀微粒子2A〜2Eを回収した。なお、平均粒子径は変化しなかった。
上記で得られた各銀微粒子2A〜2Eを用い、総質量の10%相当のテルピネオールを添加し、各分散液を得た。実施例3では銀微粒子2A、実施例4では銀微粒子2B、比較例1では銀微粒子2C、比較例2では銀微粒子2D、比較例3では銀微粒子2Eを用いた。これらの液をそれぞれクラボウ社製のマゼルスターを用い、2回撹拌優先モードにて混合し、各導電性接着剤を調製した。
磁気撹拌子を入れた50mLガラス製遠沈管に、オレイン酸(0.06g)、ヘキシルアミン(1.4g)、N,N−ジメチル−1,3−ジアミノプロパン(0.3g)、ブチルアミン(0.6g)及び2−(2−エチルヘキシルオキシ)エタノール(4.0g)を投入し、1分間程度攪拌したのち、シュウ酸銀(4.0g)を投入し、約10分間攪拌することで、銀微粒子調製用組成物を得た。その後、アルミブロックを備えたホットスターラー(小池精密機器製作所製HHE−19G−U)上に、これらのガラス製遠沈管を立てて設置し、40℃で30分間攪拌し、さらに、90℃で30分間攪拌した。放冷後、磁気撹拌子を取り出し、各組成物にメタノール15gを添加してボルテックスミキサーで攪拌した後、遠心分離機(日立工機製CF7D2)にて3000rpm(約1600×G)で1分間の遠沈操作を実施し、遠沈管を傾けることにより上澄みを除去した。メタノール15gの添加、撹拌、遠心分離、及び上澄み除去の工程を2回繰り返し、製造された銀微粒子6を回収した。合成例3で得られた銀微粒子3を、走査型電子顕微鏡(日立ハイテク製S−4500)にて観察し、画像に含まれる任意の30個の粒子の長辺の長さを測定して、平均値を求めた。平均粒子径は20nmであった。
合成例3で得られた銀微粒子3の分散液(メタノール溶液)を用いて、n−ヘキシルアミンを銀微粒子の質量の3倍量を添加し、室温で4時間撹拌した。撹拌後、磁気撹拌子を取り出し、各組成物にメタノール15gを添加してボルテックスミキサーで攪拌した後、遠心分離機(日立工機製CF7D2)にて3000rpm(約1600×G)で1分間の遠沈操作を実施し、遠沈管を傾けることにより上澄みを除去した。メタノール15gの添加、撹拌、遠心分離、及び上澄み除去の工程を2回繰り返し、保護層に含まれるアミンの比率を調整(置換)した銀微粒子3Aを回収した。なお、平均粒子径は変化しなかった。
上記で得られた銀微粒子3Aを用い、総質量の10%相当のテルピネオールを添加し、各分散液を得た。この液をクラボウ社製のマゼルスターを用い、2回撹拌優先モードにて混合し、導電性接着剤を調製した。
上記で得られた各銀微粒子1A,1B,2A,2B,2Cを表2に示す割合で混合し、総質量の10%相当のテルピネオールを添加し、各分散液を得た。この液をクラボウ社製のマゼルスターを用い、2回撹拌優先モードにて混合し、各導電性接着剤を調製した。なお、混合後の平均粒子径は上述した方法により求めた。
上記で得られた各銀微粒子1A,1B,2A,2B,2C,3Aを表3に示す割合で混合し、総質量の10%相当のテルピネオールを添加し、各分散液を得た。この液をクラボウ社製のマゼルスターを用い、2回撹拌優先モードにて混合し、各導電性接着剤を調製した。なお、混合後の平均粒子径は上述した方法により求めた。
Claims (8)
- アミンを含む保護層を備え、平均粒子径が75nm〜300nmである金属微粒子Aを含有し、
前記アミンは、炭素数5〜7のモノアルキルアミンを含み、
前記保護層において、前記炭素数5〜7のモノアルキルアミンと、前記炭素数5〜7のモノアルキルアミンとは異なるアミンとの質量比率が、100:0〜10:90の範囲内にある、導電性接着剤。 - 前記保護層が、さらに脂肪酸を含む、請求項1に記載の導電性接着剤。
- 溶媒をさらに含む、請求項1又は2に記載の導電性接着剤。
- 請求項1〜3のいずれかに記載の導電性接着剤の焼結体。
- 請求項4に記載の焼結体により部材間が接着された部分を備えている、回路又は装置。
- アミンを含む保護層を備え、平均粒子径が75nm〜300nmである金属微粒子Aを混合する工程を備える、導電性接着剤の製造方法であって、
前記アミンが炭素数5〜7のモノアルキルアミンを含み、
前記保護層において、前記炭素数5〜7のモノアルキルアミンと、前記炭素数5〜7のモノアルキルアミンとは異なるアミンとの質量比率が、100:0〜10:90の範囲内にある、前記金属微粒子Aを用いる、導電性接着剤の製造方法。 - アミンを含む保護層を備え、平均粒子径が75nm〜300nmである金属微粒子を準備する工程と、
当該金属微粒子の保護層に含まれるアミンと、炭素数5〜7のモノアルキルアミンとを置換して、前記炭素数5〜7のモノアルキルアミンと、前記炭素数5〜7のモノアルキルアミンとは異なるアミンとの質量比率が、100:0〜10:90の範囲内となるように調整し、前記金属微粒子Aを調製する工程と、
をさらに備える、請求項6に記載の導電性接着剤の製造方法。 - 請求項1〜5のいずれかに記載の導電性接着剤を部材間に配置する工程と、
前記導電性接着剤を加熱して焼結させる工程と、
を備える、部材の接着方法。
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US20200172767A1 (en) | 2020-06-04 |
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EP3467062A4 (en) | 2020-01-15 |
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KR20190011239A (ko) | 2019-02-01 |
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