有機ケイ素化合物重合体の熱分解によるβ型炭化ケイ素超微粒子集合体繊維

概要

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Dodecamethylcyclohexasilane was ring-cleavaged and polymerized at 400°C for 48 hours in an autoclave. The polymer was dissolved in benzene and then, the viscous liquid could be obtained. By the treatment of stretching of a glass rod with the surface of the viscous liquid, fibrous material (10-30μ in diameter) could be obtained. The fibrous materials were heat-treated from room temperature up to 1200°C, 1300°C and 1500°C under vacuum, respectively. The obtained fibers were composed of superfine a-SiC particles (30-70 Å) and tensile strength is about 300 Kg/mm<SUP>2</SUP> in the case of 1300°C heat-treated fiber. Tensile strength of 1200°C and 1500°C heat-treated fibers showed approximately same level of that of 1300°C heat-treated fiber. Why such high cohesive power can be appeared is also discussed in this report.
社団法人粉体粉末冶金協会の論文