한국섬유공학회지 (Textile Science and Engineering)

  • 제56권5호
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  • Pages.327-333
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  • 2019
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
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폴리카보실란으로부터 제조된 SiC 기반 세라믹 섬유의 유연성

Flexibility of SiC-based Ceramic Fibers Synthesized from Polycarbosilane

  • 주영준 (한국세라믹기술원 세라믹 섬유항공소재센터) ;
  • 조광연 (한국세라믹기술원 세라믹 섬유항공소재센터)
  • Joo, Young Jun (Fibrous Ceramics & Aerospace Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Cho, Kwang Youn (Fibrous Ceramics & Aerospace Materials Center, Korea Institute of Ceramic Engineering and Technology)
  • 투고 : 2019.09.01
  • 심사 : 2019.10.19
  • 발행 : 2019.10.31
⟨ 이전 논문 다음 논문 ⟩

초록

Silicon carbide (SiC)-based ceramic fibers are converted from polycarbosilane (PCS) as a ceramic precursor. They are mainly fabricated via processes such as melt-spinning, oxidation-curing, and pyrolysis. The oxidation-curing method not only increases the ceramic yield, but also affects the flexibility of the ceramic fiber as it induces cross-linking in the PCSs. In this study, PCS was oxidation-cured, which depended on the temperature and time variables albeit not the effect of heating rate, and then converted to SiC-based ceramic fiber through pyrolysis. The cured PCS fibers were converted to circular ceramic fibers when the reaction degree (ΔSiH) increased to approximately 0.97; however, the converted SiC-based ceramic fibers showed low flexibility. After the oxidation-curing at $200^{\circ}C$ for 50 min, oxygen content diffused into the core of the PCS fibers. As a result, the reaction degree (${\Delta}SiH$) increased significantly, and flexible SiC-based ceramic fibers were fabricated.

키워드

참고문헌

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