SiBN三元陶瓷纤维的聚硼硅氮烷裂解转化制备和性能

崔永杰,刘勇,彭帅,韩克清,余木火

Preparation and Property of SiBN Ternary Ceramic Fibers Prepared by Polyborosilazane-Derived Method

Yongjie CUI,Yong LIU,Shuai PENG,Keqing HAN,Muhuo YU

表1 PBSZ初生纤维、不熔化纤维及不同裂解温度得到的SiBN纤维的力学性能

Table 1 Mechanical property of PBSZ green fibers, cured fibers and pyrolyzed fibers

Sample	Strength /cN	Elongation /%	Diameter /μm	Tensile strength /GPa
PBSZ green fibers	6.91	5.1	20	0.22
Cured fibers	8.79	4.2	19	0.31
Pyrolyzed fibers in 1100℃	13.39	1.9	14	0.87
Pyrolyzed fibers in 1400℃	14.01	1.1	14	0.91