Thermostatic pyrolysis process of cured polycarbosilane fiber |
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Authors: | Hao?Wang Email author" target="_blank">Xiao-dong?LiEmail author Ping?Peng Dongpyo?Kim Lan-Young?Hong |
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Affiliation: | (1) CFC Key Lab., National University of Defense Technology, Changsha, 410073 Hunan, P.R. China;(2) Department of Fine Chemical Engineering and Chemistry, Chungnam National University, 305-764 Daejeon, Korea |
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Abstract: | As precursor fiber of advanced SiC fiber, cured polycarbosilane (PCS) fiber is prepared, and thermostatic pyrolysis of this
fiber is studied in detail. Since the weight change is the most important characteristic of the pyrolysis degree of cured
PCS fiber, a precise balance is applied on-line to follow the weight change of the cured PCS fiber, which was carried out
in a standing style furnace. In thermostatic pyrolysis, the degree of pyrolysis, which is characterized by the weight loss
of the fiber, and the properties of the final SiC fibers were found to be strongly dependent on the process conditions such
as N2 flow and the amount of fibers. From much evidence, it is the offgas evacuated in the process that plays an important role
by accelerating pyrolysis and increasing pyrolysis degree. |
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Keywords: | Curing Polycarbosilane Fiber Thermostatic Pyrolysis SiC Fiber |
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