JPWO2016043145A1 - 導電性組成物及びその製造方法 - Google Patents
導電性組成物及びその製造方法 Download PDFInfo
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- JPWO2016043145A1 JPWO2016043145A1 JP2016548872A JP2016548872A JPWO2016043145A1 JP WO2016043145 A1 JPWO2016043145 A1 JP WO2016043145A1 JP 2016548872 A JP2016548872 A JP 2016548872A JP 2016548872 A JP2016548872 A JP 2016548872A JP WO2016043145 A1 JPWO2016043145 A1 JP WO2016043145A1
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Abstract
Description
酸化グラフェンの平均粒子径は、大塚電子(株)製ゼータ電位・粒径測定アナライザELS−Zにより、光散乱法で測定した。ナノアルミナとナノダイヤモンドの平均粒子径は、製造メーカーが技術資料に記載した値である。
仁科マテリアル社製の酸化グラフェン水分散液(固形分濃度0.5%、平均粒径11μm)、セルロースナノファイバー水分散液、スギノマシン社製、商品名"ビンフィスWma−10002"(固形分2%)、水分散ポリエステル樹脂、東洋紡社製、商品名"バイナロールMD−1200"(固形分34%)を加え、水で希釈して固形分濃度8.0%に調整し、超音波分散処理を30分間行って組成物の水分散液を調製した後、遠心脱泡を行なって混合水分散液を調製した。実施例1〜6の組成比は表1に示す。なお、セルロースナノファイバーを含まない組成である比較例1〜2も表1に示す。表中の質量比は、水分散性ポリエステル樹脂1質量部当たりの質量部を示す。ガラス板(26×24mm)を80℃に熱したホットプレートに乗せ、500μlの混合水分散液を滴下し、試料が固まるまで静置してから、100℃のオーブンで30分間熱処理することにより、ガラス板上コーティングした本発明の薄膜を得た。表面抵抗を測定し、その値から体積抵抗値を算出した。これらの薄膜の質量比と体積抵抗値を表1に示す。
還元剤としてピロガロールを水分散性ポリエステル樹脂1質量部当たり0.05質量部加えたほかは実施例1〜6、比較例1〜2と同様にして混合水分散液を調製した。実施例7〜8の組成比は表2に示す。ガラス板(たて26mm、よこ24mm)を70℃に熱したホットプレートに乗せ、500μlの混合水分散液を滴下し、試料が固まるまで静置してから、100℃オーブンで60分、さらに150℃で1時間熱処理した。得られた薄膜の表面抵抗を測定し、その値から体積抵抗値を算出した。これらの薄膜の質量比と体積抵抗値を表2に示す。
Claims (12)
- セルロースナノファイバーと微小粒子を含む導電性組成物であって、
(A)セルロースナノファイバー、及び、
(B)グラフェン、酸化グラフェン及びそれらの誘導体から選ばれる少なくとも一種類の無機粉体、
を含むことを特徴とする導電性組成物。 - 前記(B)成分の無機紛体は、平均粒子径が2μm以上である請求項1に記載の導電性組成物。
- 前記(A)成分と(B)成分の合計質量を100質量%としたとき、前記(A)成分は5〜98質量%、前記(B)成分は2〜95質量%である請求項1又は2に記載の導電性組成物。
- 前記導電性組成物には、さらに(C)成分として還元剤を含む請求項1〜3のいずれかに記載の導電性組成物。
- 前記導電性組成物に、さらに(D)成分として、陰イオン性分散剤を含有する請求項1〜4のいずれかに記載の導電性組成物。
- 前記導電性組成物に、さらに(E)成分としてポリマーを含有する請求項1〜5のいずれかに記載の導電性組成物。
- 前記(E)成分のポリマーの屈折率が1.45〜1.60である請求項6に記載の導電性組成物。
- (A)セルロースナノファイバー、及び、(B)グラフェン、酸化グラフェン及びそれらの誘導体から選ばれる少なくとも一種類の無機粉体を含み、これに水又は水・親水性溶媒分散液を加えて分散液とし、前記分散液から水又は水・親水性溶媒を除去して請求項1〜7のいずれかに記載の導電性組成物を製造することを特徴とする導電性組成物の製造方法。
- 前記水・親水性溶媒分散液から水又は水・親水性溶媒を除去した後、80〜200℃で熱処理することにより所定の形状に整える請求項8に記載の導電性組成物の製造方法。
- 前記(B)成分に酸化グラフェン及び/又はそれらの誘導体を含み、さらに(C)成分として還元剤を含む組成物を、80〜200℃で熱処理することにより導電性を上げる請求項8又は9に記載の導電性組成物の製造方法。
- 前記水又は水・親水性溶媒分散液から水又は水・親水性溶媒を除去した後、(E)成分であるポリマーを含浸する請求項8〜10のいずれかに記載の導電性組成物の製造方法。
- 前記(E)成分であるポリマーを含浸した後に前記(E)成分を硬化させる請求項11に記載の導電性組成物の製造方法。
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US20160340520A1 (en) | 2016-11-24 |
JPWO2016043146A1 (ja) | 2017-08-03 |
US20160319176A1 (en) | 2016-11-03 |
JP6913307B2 (ja) | 2021-08-04 |
US9862840B2 (en) | 2018-01-09 |
WO2016043145A1 (ja) | 2016-03-24 |
WO2016043146A1 (ja) | 2016-03-24 |
JP6748990B2 (ja) | 2020-09-02 |
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