ドクタープレード法に用いるアルミナスラリーの流動性に及ぼす有機剤の添加効果(<小特集>セラミック材料小特集号)

概要

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The fluidity of alumina slurry and the packing state of green sheets prepared by a doctor blade method were investigated with the variations of added organics, such as the ratio of binder to plasticizer, the degree of polymerization of binder (PVB), and the amount of organics in the alumina slurry. The homogeneous slurries were first prepared from alumina powder, organics, and solvent by ball milling. Then, the viscosity and relative viscosity of sluriies and the relative density of green sheets were measured. The results are summarized as follows : (1) The viscosity of slurry was affected largely by the ratio of binder to plasticizer, the degree of polymerization of PVB, and the amount of organics. (2) The apparent hydrodynamic shape factor (α) of alumina particles calculated from Dougherty-Krieger equation was 6〜8 in the slurry. (3) The packing density of alumina particles in the green sheet changed little with the variation of added organics.
社団法人日本材料学会の論文
1992-05-15