JP5841319B2 - 重合体微粒子および導電性微粒子 - Google Patents
重合体微粒子および導電性微粒子 Download PDFInfo
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- JP5841319B2 JP5841319B2 JP2010179716A JP2010179716A JP5841319B2 JP 5841319 B2 JP5841319 B2 JP 5841319B2 JP 2010179716 A JP2010179716 A JP 2010179716A JP 2010179716 A JP2010179716 A JP 2010179716A JP 5841319 B2 JP5841319 B2 JP 5841319B2
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- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
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- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
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- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
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- ZARXZEARBRXKMO-UHFFFAOYSA-N n,n-bis(ethenyl)aniline Chemical compound C=CN(C=C)C1=CC=CC=C1 ZARXZEARBRXKMO-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- BSIDXUHWUKTRQL-UHFFFAOYSA-N nickel palladium Chemical compound [Ni].[Pd] BSIDXUHWUKTRQL-UHFFFAOYSA-N 0.000 description 1
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 1
- 239000010956 nickel silver Substances 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
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- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001490 poly(butyl methacrylate) polymer Polymers 0.000 description 1
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- AXZWODMDQAVCJE-UHFFFAOYSA-L tin(II) chloride (anhydrous) Chemical compound [Cl-].[Cl-].[Sn+2] AXZWODMDQAVCJE-UHFFFAOYSA-L 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
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- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- DVFZJTWMDGYBCD-VAWYXSNFSA-N triethoxy-[(e)-hex-1-enyl]silane Chemical compound CCCC\C=C\[Si](OCC)(OCC)OCC DVFZJTWMDGYBCD-VAWYXSNFSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
- 229960000834 vinyl ether Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- Conductive Materials (AREA)
- Non-Insulated Conductors (AREA)
- Graft Or Block Polymers (AREA)
Description
本発明の重合体微粒子は、重合体微粒子を荷重負荷速度0.2275gf/secで圧縮する圧縮試験において、重合体微粒子全体が破壊する本破壊挙動を示す前に、予め重合体微粒子の一部が破壊される予備的破壊挙動を示すものである。好ましくは、本発明の重合体微粒子は、コア粒子と該コア粒子の表面に設けられたシェル層とを有するコア・シェル構造の粒子である。
接続領域率(%)=[(A−B)/C]×100
第一弾性限界率(%)=(A/C)×100
、R:粒子の半径(mm)である。)
重合体微粒子の変動係数(%)=100×粒子径の標準偏差/平均粒子径
本発明の導電性微粒子では、上記本発明の重合体微粒子(以下、基材粒子と称することもある)を核として、表面に導電性金属層が形成されている。
本発明の異方性導電材料は、上記本発明の導電性微粒子を含有してなるものである。異方性導電材料としては、具体的には、異方性導電フィルム、異方性導電ペースト、異方性導電接着剤、異方性導電インクなど、相対向する基材間や電極端子間に設けることで電気的な接続を可能にするものが挙げられる。また、本発明の導電性微粒子を用いた異方性導電材料は、導通スペーサーおよびその組成物などの液晶表示素子用導通材料も包含するものである。
(重合体微粒子の作製)
冷却管、温度計、滴下口を備えた四つ口フラスコに、イオン交換水840.0部と、25%アンモニア水12.0部、メタノール360.0部を入れ、攪拌下、滴下口から3−メタクリロキシプロピルトリメトキシシラン(信越化学工業(株)製「KBM503」)70.0部を添加して、3−メタクリロキシプロピルトリメトキシシランを加水分解、縮合反応させて、ポリシロキサン粒子の乳濁液を調製した。
重合体微粒子(1)に水酸化ナトリウムによるエッチング処理を施した後、二塩化スズ溶液によるセンシタイジングを施し、次いで、二塩化パラジウム溶液によるアクチベーティングを行い、パラジウム核を形成させた。このようにしてパラジウム核を形成させた重合体微粒子(1)を無電解ニッケルメッキ浴に浸漬してニッケルメッキ層を形成させた後、金置換メッキを行い、その後、イオン交換水で洗浄、メタノール置換を行って、真空乾燥を行い、導電性微粒子(1)を得た。
実施例1で得られたコア粒子(1)をそのまま比較用の重合体微粒子(C1)とした。
Claims (6)
- 重合体微粒子と導電性金属層を有する導電性微粒子であって、
前記重合体微粒子は、コア粒子と該コア粒子の表面に設けられた厚み0.05μm以上のシェル層とを有するものであり、
前記コア粒子はビニル基含有モノマーの重合体又はその焼成体であり、前記シェル層はビニル基含有モノマーの重合体であり、
前記コア粒子および前記シェル層を構成するビニル基含有モノマーはそれぞれ、1分子中にビニル基を含めて2個以上の重合性基を有する架橋性モノマーを少なくとも含んでおり、コア粒子を構成するビニル基含有モノマー中の架橋性モノマーの含有率をXc(質量%)、シェル層を構成するビニル基含有モノマー中の架橋性モノマーの含有率をXs(質量%)としたときに、Xc≧25、Xs≧20であり、かつXc>Xsであり、
前記重合体微粒子を荷重負荷速度0.2275gf/secで圧縮する圧縮試験において、重合体微粒子全体が破壊する本破壊挙動を示す前に、予め重合体微粒子の一部が破壊される予備的破壊挙動を示すことを特徴とする導電性微粒子。 - 前記圧縮試験においてシェル層の破壊の後でコア粒子の破壊が観察される、請求項1に記載の導電性微粒子。
- 前記圧縮試験における予備的破壊挙動の開始点での重合体微粒子の圧縮方向の粒子径をAとし、本破壊挙動の開始点での重合体微粒子の圧縮方向の粒子径をBとし、前記圧縮試験に供する前の重合体微粒子の圧縮方向の粒子径をCとしたときに、下記式で求められる接続領域率が1〜50%である、請求項1または2に記載の導電性微粒子。
接続領域率(%)=[(A−B)/C]×100 - 前記コア粒子の10%K値をYc(kgf/mm2)、前記シェル層の10%K値をYs(kgf/mm2)としたときに、Yc≧800、Ys≧600であり、かつYc>Ysである、請求項1〜3のいずれかに記載の導電性微粒子。
- 表面の少なくとも一部に絶縁性樹脂層を有する、請求項1〜4のいずれかに記載の導電性微粒子。
- 請求項1〜5のいずれかに記載の導電性微粒子を含有してなる異方性導電材料。
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| JP6438194B2 (ja) * | 2013-01-24 | 2018-12-12 | 積水化学工業株式会社 | 基材粒子、導電性粒子、導電材料及び接続構造体 |
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| JP6696721B2 (ja) * | 2013-09-09 | 2020-05-20 | 積水化学工業株式会社 | 基材粒子、導電性粒子、導電材料及び接続構造体 |
| CN108299644A (zh) | 2013-12-09 | 2018-07-20 | 3M创新有限公司 | 可固化倍半硅氧烷聚合物、组合物、制品和方法 |
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| WO2015195391A1 (en) | 2014-06-20 | 2015-12-23 | 3M Innovative Properties Company | Adhesive compositions comprising a silsesquioxane polymer crosslinker, articles and methods |
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