KAGAKU KOGAKU RONBUNSHU
Online ISSN : 1349-9203
Print ISSN : 0386-216X
ISSN-L : 0386-216X
Mechanical Properties of Surface Composite Particles Coated with Finer Particles
Tomoyuki UchiyamaMasaru OtaniYukiaki OtomuraKunio Shinohara
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1996 Volume 22 Issue 3 Pages 655-661

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Abstract

The effect of the coated composite surface of particles on the mechanical properties of the powder bed was investigated. Polyethylene-silica surface composite powder was prepared at several coating ratios with Hybridizer. Various tests on mechanical properties of the powder bed were carried out with the prepared powder, and the following results were obtained : The ultimate tensile strength depends only on the conhesive force between particles, and the contact probability model of composite particles led to good agreement between the experimental and calculated values.
The coefficient of internal friction and cohesive shear strength were influenced due to the interlocking effect of the surface roughness of composite particles. The effects of coating particles became small with dynamic properties like angle of repose. It is possible to control the mechanical properties in a stepwise fashion by changing the coating ratio of the particles.

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© by THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN
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