A novel precursor route for the production of Si-B-N ceramic fibers

作者：Zhao, Xi; Han, Keqing^*; Peng, Yuqing; Yuan, Jia; Li, Shutong; Yu, Muhuo

来源：Materials Letters, 2011, 65(17-18): 2717-2720.

DOI：10.1016/j.matlet.2011.05.042

• Ceramics
• Polymers
• Polycondensation
• Melt-spinning
• Pyrolysis
• SiBN

A novel polymeric precursor to SiBN ceramic fiber was synthesized by reaction of tetramethylaminosilane ((CH(3)NH)(4)Si) and trimethylaminoboraoe ((CH(3)NH)(3)B). It was shown that the polymer contains an Si-N-B bridge bond connecting the linear silicon and borazon ring parts. This structure imparts sufficient viscosity for the material to be processed by melt spinning, so that for the first time it was easily spun into green fibers using laboratory scale equipment. SiBN ceramic fibers with diameter 35 gm were obtained after pyrolysis at 1600 degrees C in an NH(3) atmosphere. The thermal decomposition behavior of the polymer during pyrolysis was also investigated.

• 出版日期2011-9
• 单位东华大学