Synthesis and Characterization of Poly B-tri (methylamino) borazine
Many precursor polymers were designed and synthesized to prepare the boron nitride (BN) ceramic fiber or composite materials. Unfortunately most of them are poor processing ability for too high cross-linked structure or too low molecular weight. Here we prepared a precursor polymer poly B-tri (methylamino) borazine (PMAB) which showed favorable melt properties for fiber spinning. The monomer, B- tri (methylamino) borazine (MAB), was prepared by reaction of methylamine with B-tri (chloro) borazine (TCB) at -80℃, and the B-tri (chloro) borazine were synthesized by reaction of solid ammonium chloride and boron trichloride gas at elevated temperatures.
B-tri (methylamino) borazine B-tri (chloro) borazine boron nitride(BN) fiber
BI Hongyan HAN Keqing LI Shutong XIE Weiwei YU Muhuo
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, P. R. China
国际会议
上海
英文
296-298
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）