METHOD FOR PRODUCING SILICON CARBIDE FIBERS
개요
발명자
Ryota NAITO; Junki SAITO; Ryo IUCHI; Koji YAMAKAWA; Tatsuru GOTO
IPC 분류
CPC 분류
In a method for producing polycarbosilane by a liquid phase-gas phase thermolysis condensation method, provided is a method for producing polycarbosilane for silicon carbide fiber production having fewer processes than known production methods. The method for producing polycarbosilane for silicon carbide fiber production according to an aspect of the present invention includes: a polycarbosilane synthesis step of synthesizing polycarbosilane having a weight average molecular weight of 9000 or greater, the polycarbosilane synthesis step including the processes of: heating a raw material containing a cyclic silane compound at a first temperature to generate a gas phase, heating the gas phase at a second temperature higher than the first temperature to generate polycarbosilane, and by cooling the polycarbosilane to return to the raw material and heating at the first temperature, increasing a molecular weight of the polycarbosilane.
원문 (중국어)
In a method for producing polycarbosilane by a liquid phase-gas phase thermolysis condensation method, provided is a method for producing polycarbosilane for silicon carbide fiber production having fewer processes than known production methods. The method for producing polycarbosilane for silicon carbide fiber production according to an aspect of the present invention includes: a polycarbosilane synthesis step of synthesizing polycarbosilane having a weight average molecular weight of 9000 or greater, the polycarbosilane synthesis step including the processes of: heating a raw material containing a cyclic silane compound at a first temperature to generate a gas phase, heating the gas phase at a second temperature higher than the first temperature to generate polycarbosilane, and by cooling the polycarbosilane to return to the raw material and heating at the first temperature, increasing a molecular weight of the polycarbosilane.