著者

立山 博

出版者

The Clay Science Society of Japan

雑誌

粘土科学 (ISSN:04706455)

巻号頁・発行日

vol.34, no.3, pp.157-164, 1994-12-30 (Released:2011-09-20)

参考文献数

13

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The morphology of the colloidal particles influences the properties of suspensions, particularly the viscosity and plasticity that seem to increase with the presence of platelike colloidal particles. Shear stress is calculated against shear rate in dilute clay-water suspensions on the basis of Simha's theory, which indicates that the rheological behavior ofplatelike particles is different from that of spherical particles. In the case of condensed suspensions, platelike particles are flocculated into some different associations, then the rheological behaviour of the suspensions becomes very complicated. Normarized orientational function is used to predict the properties of flocculated structure in the present report. Shear stress is simulated using the equation of total energy dissipation rate based on the Michael's theory.

著者

中村 浩之 陳 運法 木村 邦夫 立山 博 広末 英晴

出版者

公益社団法人日本セラミックス協会

雑誌

日本セラミックス協会学術論文誌 : Nippon Seramikkusu Kyokai gakujutsu ronbunshi (ISSN:18821022)

巻号頁・発行日

vol.105, no.1227, pp.1037-1041, 1997-11-01

被引用文献数

4 5

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Preparation of coated particles by an injection method was presented. The raw material of a coating layer is injected into a core particle suspension in which a precipitant is dissolved. By this method, some coated particles including titania hydrate-coated calcium carbonate powders and alumina hydrate-coated SiC whiskers were prepared. It was noticeable that CaCO_3, which is soluble in the raw material of titania hydrate, could be coated with titania hydrate. Furthermore, it was shown that aluminum nitrate and aluminum chloride as well as aluminum sulfate were useful as the raw material salts. Homogeneous nucleation and coalescence of the homogeneous nuclei onto the coating layers were expected to be included in the coating process.