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http://dx.doi.org/10.7234/composres.2022.35.1.023

Thermal and Rheological Characterizations of Polycarbosilane Precursor by Solvent Treatment  

Song, Yeeun (Department of Polymer Science and Engineering, Chonnam National University)
Joo, Young Jun (Fibrous Ceramics and Aerospace Materials Center, Korea Institute of Ceramic Engineering and Technology)
Shin, Dong Geun (Fibrous Ceramics and Aerospace Materials Center, Korea Institute of Ceramic Engineering and Technology)
Cho, Kwang Youn (Fibrous Ceramics and Aerospace Materials Center, Korea Institute of Ceramic Engineering and Technology)
Lee, Doojin (Department of Polymer Science and Engineering, Chonnam National University)
Publication Information
Composites Research / v.35, no.1, 2022 , pp. 23-30 More about this Journal
Abstract
Polycarbosilane(PCS) is an important precursor for melt-spinning the silicon carbide(SiC) fibers and manufacturing ceramics. The PCS is a metal-organic polymer precursor capable of producing continuous SiC fibers having excellent performance such as high-temperature resistance and oxidation resistance. The SiC fibers are manufactured through melt-spinning, stabilization, and heat treatment processes using the PCS manufactured by synthesis, purification, and control of the molecular structure. In this paper, we analyzed the effect of purification of unreacted substances and low molecular weight through solvent treatment of PCS and the effect of heat treatment at various temperatures change the polymerization and network rearrangement of PCS. Especially, we investigated the complex viscosity and structural arrangement of PCS precursors according to solvent treatment and heat treatment through the rheological properties.
Keywords
Polycarbosilane; Precursor; Purification; SiC fiber; Thermal and Rheological behaviors;
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Times Cited By KSCI : 1  (Citation Analysis)
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