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- 永田 公一
- 京セラ株式会社 大阪玉造事業所 プロセス設計部
書誌事項
- タイトル別名
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- Effect of Poor Solvent Ratio on Rheological Behavior of Alumina Suspension and Properties of Green Sheets
- 貪溶媒比率がアルミナ懸濁液のレオロジー特性とグリーンシート特性に及ぼす影響
- ドンヨウバイ ヒリツ ガ アルミナ ケンダクエキ ノ レオロジー トクセイ ト グリーンシート トクセイ ニ オヨボス エイキョウ
この論文をさがす
説明
The influence of solubilization of the solvents for PVB binder on the rheological behavior and properties of alumina green sheets was investigated. Suspensions of alumina particles were prepared with various ratios of toluene (poor solvent) and n-butanol (good solvent) including PVB binder. Binder solutions of concentration 20 wt% were opaque at less than 5 wt% of n-butanol ratio, where turbidities, viscosities, TI values and thread-forming properties of binder solutions were large. These results indicate that the binder molecule exhibits a thread-like shape in poor solvent.<BR>The amount of binder adsorbed on alumina particles in suspension increased with decreasing the ratio of n-butanol, suggesting that binder at the adsorbed state on alumina particles is more stable than at the state of drifting in the poor bulk solvents. And this result suggests that occupation area of thread-like binder is small in poor solvent.<BR>Viscosities, TI values, sedimentation volumes and thread-forming properties of suspensions increased with decreasing the n-butanol ratio. Bulky cohesion structures of alumina particles in suspension with high TI values are supposed to be maintained in sedimentation cakes. However, the packing degree of green sheet after drying was high. The number of binder segments expanding into bulk solution is expected to be fewer, because hydroxyl groups in PVB binder are adsorbed on alumina particles via hydrogen bonding in poor solvent. Expanding binder segment is easy to shrink while drying. Distance between alumina particles decreases, and, as a result, it is thought that the packing degree of alumina particles became high.
収録刊行物
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- 粉体工学会誌
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粉体工学会誌 46 (10), 756-762, 2009
一般社団法人 粉体工学会
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詳細情報 詳細情報について
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- CRID
- 1390001204513173120
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- NII論文ID
- 10025644261
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- NII書誌ID
- AN00222757
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- COI
- 1:CAS:528:DC%2BD1MXht12gt7bK
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- ISSN
- 18837239
- 03866157
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- NDL書誌ID
- 10463945
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- 本文言語コード
- ja
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- JaLC
- NDLサーチ
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