有机前驱体法制备氮化硼纤维的研究  

Preparation of boron nitride fiber by organic precursor method

作　　者：赵樱淼 段玉婷 沈绥 卢振西 梁兵[2] 龙佳朋[2] Zhao Yingmiao;Duan Yuting;Shen Sui;Lu Zhenxi;Liang Bing;Long Jiapeng(School of Safety and Environmental Engineering,Shenyang University of Chemical Technology,Shenyang 110142;School of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142)

机构地区：[1]沈阳化工大学安全与环境工程学院,沈阳110142 [2]沈阳化工大学材料与工程学院,沈阳110142

出　　处：《化工新型材料》2024年第6期108-112,共5页New Chemical Materials

基　　金：辽宁特聘教授基金项目(512003007021)。

摘　　要：氮化硼(BN)纤维是一种耐热和介电性能优异的陶瓷纤维,目前的主要合成方法为有机前驱体转化法。以聚三甲胺基环硼氮烷为前驱体,通过熔融纺丝、不熔化和力热耦合热解处理,制备出直径均匀的BN纤维。利用扫描电镜(SEM)、X射线衍射(XRD)、X光电子能谱(XPS)、BET比表面积等手段对BN纤维的微观结构、结晶性能、元素组成以及孔隙率进行详细表征。结果表明:1600℃热处理得到的BN纤维,表面光滑,织态结构完整,拉伸强度可达640.3MPa,而1000℃热处理得到的BN纤维,孔隙率高,比表面积最大,比表面积可达362.64m^(2)/g。Boron nitride(BN)fibers is a kind of ceramic fiber with excellent heat resistance and dielectric properties,and the current main synthetic method is the organic precursor conversion method.In this paper,BN fibers with uniform diameter were prepared by melt spinning process,non-melting and force-thermal coupled pyrolysis treatment with polytrimethylamine borazine as precursor.The microstructure,crystalline properties,elemental composition,and porosity of BN fibers were characterized in detail using scanning electron microscopy(SEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and BET specific surface area and other means.The results showed that the BN fibers obtained by heat treatment at 1600℃had a smooth surface,complete weave structure,and tensile strength of up to 640.3MPa,while the BN fibers obtained by heat treatment at 1000℃had high porosity and the maximum specific surface area of up to 362.64m^(2)/g.

关 键 词：有机前驱体法 前驱体 合成 氮化硼纤维 热解 

分 类 号：TQ343.7[化学工程—化纤工业]