JP2014019599A - 高分散性ナノマテリアルの調製方法 - Google Patents
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Abstract
【解決手段】原末を溶媒に混合し懸濁する懸濁工程と、懸濁工程で得られた懸濁液を濾過する濾過工程と、濾過工程で得られた濾液を直ちにかつ急速に凍結固化する凍結工程と、凍結工程で得られた凍結固化物から真空乾燥により溶媒を昇華除去する真空乾燥工程と、を有することを特徴とする、高分散性ナノマテリアルの調製方法である。特に、常温常圧で個体の溶媒を用いること、懸濁工程で溶媒の融点以下の温度でシャーベット状態で混合させること、濾過工程の前に懸濁液を一旦凍結後再融解すること等により、簡便かつ高収率に液相及び気相のいずれにおいても高分散性を有するナノマテリアルを得ることができる。
【選択図】図12
Description
Claims (9)
- 原末を溶媒に混合し懸濁する懸濁工程と、
前記懸濁工程で得られた懸濁液を濾過する濾過工程と、
前記濾過工程で得られた濾液を直ちにかつ急速に凍結固化する凍結工程と、
前記凍結工程で得られた凍結固化物から真空乾燥により前記溶媒を昇華除去する真空乾燥工程と、
を有することを特徴とする、高分散性ナノマテリアルの調製方法。 - 前記溶媒は、常温常圧で個体である、請求項1に記載の高分散性ナノマテリアルの調製方法。
- 前記溶媒は、ターシャリーブチルアルコール、1,4−ジオキサン、p−キシレン、ジフェニルメタン、シクロヘキサノール、フェノキシエタノール、1,3−ジメトキシベンゼン、ジフェニルエーテル、アセトフェノン、プロピオフェノン、安息香酸ベンジル、p−クロロトルエン又は1,2,4−トリクロロベンゼンである、請求項2に記載の高分散性ナノマテリアルの調製方法。
- 前記懸濁工程は、前記原末を前記溶媒に添加して撹拌しながら前記溶媒の融点以下の温度まで冷却しシャーベット状態で更に混合させることを特徴とする、請求項1〜3のいずれか1項に記載の高分散性ナノマテリアルの調製方法。
- 前記懸濁工程と前記濾過工程の間に、前記懸濁工程で得られた懸濁液を凍結した後再融解する凍結再融解工程を更に有する、請求項1〜4のいずれか1項に記載の高分散性ナノマテリアルの調製方法。
- 前記濾過工程は、フィルターを振動させながら前記懸濁液を濾過することを特徴とする、請求項1〜5のいずれか1項に記載の高分散性ナノマテリアルの調製方法。
- 前記凍結工程及び前記真空乾燥工程に替えて、前記濾過工程で得られた濾液から直ちにかつ急速に臨界点乾燥により前記溶媒を昇華除去する臨界点乾燥工程を更に有する、請求項1に記載の高分散性ナノマテリアルの調製方法。
- 前記溶媒は二酸化炭素、エタン、プロパン、エチレン又はプロピレンである、請求項7に記載の高分散性ナノマテリアルの調製方法。
- 前記ナノマテリアルは、カーボンナノチューブ、フラーレン、カーボンブラック、シリカ、酸化チタン、酸化亜鉛、銀、鉄、アルミナ、酸化セリウム、白金ナノコロイド、量子ドット又はニッケルである、請求項1〜8のいずれか1項に記載の高分散性ナノマテリアルの調製方法。
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Cited By (5)
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JP2017191011A (ja) * | 2016-04-13 | 2017-10-19 | 株式会社村田製作所 | 粉体の評価方法 |
CN107824212A (zh) * | 2017-10-31 | 2018-03-23 | 青岛大学 | 氮掺杂碳‑氧化铈复合材料及其制备与应用 |
WO2018056801A1 (en) * | 2016-09-22 | 2018-03-29 | Universiti Putra Malaysia | Preparation of carbon quantum dots |
WO2019009136A1 (ja) * | 2017-07-05 | 2019-01-10 | 東邦チタニウム株式会社 | 金属粉末、及びその製造方法 |
CN109776444A (zh) * | 2019-03-11 | 2019-05-21 | 中国工程物理研究院化工材料研究所 | 基于自然沉降过程制备高分散daaf纳米粉体的方法 |
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