聚硼硅氮烷陶瓷前驱体分子结构设计和合成*

聚硼硅氮烷是制备高性能硅硼 碳氮（SiBCN）复相陶瓷的主要聚合物前驱体，在耐高温、抗氧化高性能陶瓷领域中具有重要的研究价值。本文分4个方面，即基于硼吖嗪的聚硼硅氮烷、侧基含有环硼氮烷或单硼烷的聚硼硅氮烷、基于多官能硼烷构筑的聚硅氮烷和含硼聚硅基碳化二亚胺，从聚硼硅氮烷分子结构设计、改性、合成及在多维尺寸材料中初步应用的角度综述了该领域国内外研究的新进展，指出了聚硼硅氮烷陶瓷前驱体设计合成研究发展中值得关注的新方向。

Molecular Design and Synthesis of Polyborosilazane Precurosors for SiBCN Ceramics

As important polymeric precursors for siliconboron carbonotide(SiBCN) ceramics applied in high temperature and high oxidation corrosive environments,polyborosilazane precursors with excellent yield of ceramic and process ability have attracted much attention over the last two decades.The recent progress in molecular design and synthesis of polyborosilazane precurosors for SiBCN ceramics is reviewed.Especially the borazine modified polyborosilazane,monofunctional borane modified polyborosilazane on side chain,multi-functional borane based polyborosilazane and boron-cantaining polycarbodiimides are illustrated in view of the molecular design and synthesis,respectively.Accordingly,the new research ideas,such as synthesis of hyperbranched polyborosilazane precursors and preparation of siliconboron carbonotide based micro/nano electromachincal systems(M/NEMS) are proposed based on the progress of polyborosilazane precurosors derived SiBCN ceramics and nanotechnology.