TANG Binbin, WANG Huifeng, JIA Jun, HANG Keqing, YU Muhuo

(State Key Laboratory for Modification of Chemical Fiber and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620)

Abstract: The curing of Co-PBSZ green fibers was studied in this paper. Cured fibers were prepared by heating Co-PBSZ green fibers up to 310℃ in NH3 atmosphere for different periods. The structure and property of cured fibers were characterized by Soxhlet extraction method, FTIR, EA, fiber tensile strength test and SEM. The results showed that the structure of cured fibers was different from that of green fibers. The curing degree and the tensile strength of cured fibers increased with the increase of the curing time. The cured fibers exhibited a dense texture and retained the fiber shape without inter-fiber fusion.

Key words: Co-PBSZ; green fiber; curing; SiBN(C) ceramic fiber