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http://dx.doi.org/10.9766/KIMST.2017.20.5.620

Development of Polymer-derived Silicon Carbide Fiber with Low Oxygen Content Using a Cyclohexene Vapor Process  

Yoon, Byungil (Raw Material R&D Team, DACC Carbon Co., Ltd.)
Choi, Woo Chul (Raw Material R&D Team, DACC Carbon Co., Ltd.)
Kim, Myeong Ju (Raw Material R&D Team, DACC Carbon Co., Ltd.)
Kim, Jae Sung (Raw Material R&D Team, DACC Carbon Co., Ltd.)
Kim, Jung il (Raw Material R&D Team, DACC Carbon Co., Ltd.)
Kang, Hong Gu (Raw Material R&D Team, DACC Carbon Co., Ltd.)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.20, no.5, 2017 , pp. 620-632 More about this Journal
Abstract
A chemical vapor curing method(CVC) was developed to cure polycarbosilane(PCS) fibers by using cyclohexene vapour as a non-oxygen active reactant, instead of air in oder to prepare the silicon carbide(SiC) fiber with low oxygen content. A cross-linked PCS fibers by cyclohexene vapor showed a completely different variation in IR spectra in comparison to the air-cured PCS fiber. CVC method resulted in less than 3 wt% in oxygen content. In this experiment conditions, The average tensile strength and modulus of SiC fiber obtained by CVC had 1995 MPa and 183 GPa respectively, which is higher than that of SiC fiber prepared by air-curing process.
Keywords
SiC Fiber; PCS; Melt Spinning; Air-Oxidation Curing; CVC; Cyclohexene;
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