Silazanes were divided into chain-silazane, cyclo-silazane and poly-silazane according to the material variety and synthesis method. Because of the specific property of Si—N and N—H bonds, silazanes have more and more important applications to the preparation of preceramics, heat-resisting material, glow discharge and high performance liquid chromatography. This review mainly outlines the progress in study of silazane synthesis and application.

Key words: poly-silazane, preceramic, heat-resisting rubber, cyclo-silazane