关键词: 反应机理, 红外分光光度法, 纤维, 热重量分析, 碳化硅, 聚碳硅烷, 力学性能

The oxidative stabilization process of polyacrbosilane fibers was monitored by TGA and IR spectra. The reaction mechanism and processing conditions were discussed. By controlling the stabilization extent, the mechanical properties of silicon carbide fibers were improved.

Key words: REACTION MECHANISM, INFRARED SPECTROPHOTOMETRY, FIBERS, THERMOGRAVIMETRY, SILICON CARBIDE, POLYCARBOSILANE, MECHANICAL PROPETIES