Synthesis and Characteristics of Zirconium Hybridized Polycarbosilane

지르코늄 혼성 폴리카르보실란의 합성 및 특성

  • Kang, Phil-Hyun (Department of Industrial Chemistry, Graduate School, Chungnam National University) ;
  • Yang, Hyun-Soo (Department of Industrial Chemistry, Graduate School, Chungnam National University)
  • 강필현 (충남대학교 대학원 공업화학과) ;
  • 양현수 (충남대학교 대학원 공업화학과)
  • Received : 1997.12.31
  • Accepted : 1998.07.24
  • Published : 1998.11.10

Abstract

As organosilicon based preceramic polymer, new zirconium hybridized polycarbosilane having a good thermal stability and forming stage was synthesized. Oxidative stability(infusibility) and mechanical property of this polymer during the thermal curing process and heat treatment were examined. Prepared zirconium hybridized polycarbisilane (PZC) was spun into fiber at $250{\sim}270^{\circ}C$. Spinnability of PZC polymer having a molecular weight of 1000 to 1400 and having a dispersity<2 was good. The thermal curing process of the PZC fiber was done at 140 to $200^{\circ}C$. The mechanical properties of PZC ceramic fiber depend on curing temperature of PZC as precursor of PZC ceramic fiber. It was found that the optimum curing temperature was variable with the molecular weight of PZC. The cured PZC fiber need constant gel fraction to have good tensile strength.

Acknowledgement

Supported by : 한국과학재단

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