Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Preceramic Polymer Technology for High Temperature Ceramic Composite and its Application

초고온복합소재용 프리세라믹폴리머 합성 및 응용기술

  • Lee, Yoonjoo (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Younghee (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Bae, Seong Gun (Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Hyeon Myoung (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Cho, Kwang Youn (Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Kwon, Woo Teck (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Soo Ryong (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Riu, Doh Hyung (Department of Materials Science and Engineering, Seoul National University of Technology) ;
  • Shin, Dong Geun (Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology)
  • Received : 2017.03.29
  • Accepted : 2017.04.30
  • Published : 2017.04.30
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Abstract

The preceramic polymer can realize a variety of complex ceramic structures that can not be obtained by conventional ceramic processes. Polycarbosilane, which is a typical preceramic polymer, can control the molecular structure, molecular weight and molecular weight distribution for preparing complex morphology and microstructure of SiC ceramics, including SiC fiber. In this paper, synthesis and molecular structure control technique of polycarbosilane is explained. The silicon carbide fiber prepared by melt spinning, stabilization and heat treatment, and ceramic fiber composites technology made by PIP process are also discussed. In addition, we introduce an example of the development of a complex silicon carbide material such as a silicon carbide hollow fiber having a nanoporous structure.

프리세라믹폴리머는 기존의 세라믹 공정으로는 얻을 수 없는 다양하고 복잡한 구조의 세라믹 소재를 구현할 수 있다. 대표적인 프리세라믹폴리머인 폴리카보실란은 분자구조 제어를 통해 실리콘과 탄소의 함량비 조절이나 분자구조의 선형성을 향상시키고 분자량 및 분자량분포 제어를 통해 탄화규소섬유를 포함한 다앙한 형상/미세구조의 탄화규소 세라믹을 제조할 수 있다. 본 논문에서는 폴리카보실란의 합성 및 분자구조제어기술과 이를 용융방사 및 안정화, 열처리를 거쳐 제조되는 탄화규소섬유섬유, 그리고 PIP 공정으로 만들어지는 세라믹섬유복합소재 기술에 대하여 논하였다. 더불어 나노다공구조를 갖는 탄화규소 중공사와 같이 폴리카보실란을 이용해 구현할 수 있는 복잡구조의 탄화규소 소재 개발 예를 소개하였다.

Keywords

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