LI Xiaohong, XU Zhaofang, SHUAI Shuyi, CHEN Lu, YANG Bo, CHEN Qi, LI Yang

(School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang 550025, Guizhou, China)

Abstract: As a polymer precursor of SiC，hyperbranched polycarbosilanes (HBPCS) have been widely applied to the fabrication of SiC ceramics and SiC matrix composites, due to their excellent properties, such as self-crosslinking, low viscosity, high ceramic yields and functional terminal groups. In the present work, the structures, crosslinking methods and applications of HBPCS were reviewed systematically. The development direction of HBPCS in the near future was prospected. Functionalization requirement and application properties of the HBPCS were the main object of future synthesis and application. Crosslinking method would be developed in the direction of low temperature, fast, anaerobic and low cost.
Key words: hyperbranched polycarbosilane; crosslinking methods; monomer; structure; applications