Silicon Carbide Base Ceramic Fiber Synthesis from Polycarbosilane-Modified Polymethylsilane Blend Polymers by Melt Spinning

Xin Xing; Lin Liu; Feng Cao; Xiao Dong Li; Zeng Yong Chu; Hai Feng Cheng

doi:10.4028/www.scientific.net/MSF.675-677.139

Paper Titles

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Silicon Carbide Base Ceramic Fiber Synthesis from Polycarbosilane-Modified Polymethylsilane Blend Polymers by Melt Spinning
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Effects of Rare-Earth Oxides Doping on Microstructures and Properties of Al₂O₃/TiAl Composites
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Silicon Carbide Base Ceramic Fiber Synthesis from Polycarbosilane-Modified Polymethylsilane Blend Polymers by Melt Spinning

Abstract:

A melt-spinnable precursor for SiC based fibers was prepared from blend polymers of polycarbosilane (PCS) and modified polymethylsilane (M-PMS). The blend polymers cured at 320°C are different from M-PMS and PCS. The ceramic yield of these blend polymers is about 83%. The C/Si ratio of M-PMS/PCS derived ceramics (pyrolyzed at 1250°C) is linear to the content of MPMS in M-PMS/PCS. After melt spinning, thermal oxidation curing, and pyrolysis, Si-C-O fibers were obtained. The diameter and the tensile strength of the resulted fibers are 16.5μm and 1.62GPa, respectively.

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Materials Science Forum (Volumes 675-677)

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139-142

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.675-677.139

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Online since:

February 2011

Authors:

Xin Xing, Lin Liu, Feng Cao, Xiao Dong Li, Zeng Yong Chu, Hai Feng Cheng

Keywords:

Blend Polymer, Modified Polymethylsilane, Polycarbosilane, Silicon Carbide Fiber

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