胡建建,牟世伟,唐彬彬,彭雨晴,韩克清,余木火
HU Jian-jian,MOU Shi-wei,TANG Bin-bin,PENG Yu-qing,HAN Ke-qing,YU Mu-huo

• 1:东华大学纤维材料改性国家重点实验室
• 2:材料科学与工程学院

摘要(Abstract)：

以柔性链遥爪聚合物[双(3-氨丙基)封端的聚二甲基硅氧烷(BTA-PDMS)]为扩链剂,对聚硅硼氮烷进行扩链反应改性,既可以提高其相对分子质量,又在刚性分子链中引入柔性链段,这显著改善了前驱体聚合物纤维的柔韧性,有望实现易退绕的目的。
In this paper, polyborosilazane was modified by chain-extending reaction using a flexible teleche-lic polymer, bis(3-aminopropyl)-terminated polydimethylsiloxane(BTA-PDMS), as chain extender. As a re-sult, flexible molecular chains was introduced into the precursor along with higher molecular weight. Themothed is expected to improve the flexibility of the precursor fibers which could be suitable for preparationof continuous SiBN ceramic fibers.

关键词(KeyWords)： 聚硅硼氮烷;前驱体纤维;柔性遥爪聚合物;扩链反应改性;高温陶瓷纤维
polyborosilazane,precursor fiber,flexible telechelic polymer,chain-extending reaction,hightemperature ceramic fiber

Abstract:

Keywords:

基金项目(Foundation): 国家自然基金项目(90916025)

作者(Author): 胡建建,牟世伟,唐彬彬,彭雨晴,韩克清,余木火
HU Jian-jian,MOU Shi-wei,TANG Bin-bin,PENG Yu-qing,HAN Ke-qing,YU Mu-huo

DOI: 10.16090/j.cnki.hcxw.2014.03.005

参考文献(References)：

• [1]P Baldus,M Jansen,D Sporn.Ceramic fibers for matrix composites in high-temperature engineapplications[J].Science,1999,285(5428):699-703.
• [2]S Bernard,M Weinmann,P Gerstel,et al.Boron-modified polysilazane as a novel single-source precursor for SiBCN ceramic fibers:synthesis,melt-spinning,curing and ceramic conversion[J].Journal of Materials Chemistry,2005,15:289-299.
• [3]彭雨晴,韩克清,王连军,等.前驱体聚合物转化法制备SiBN(C)陶瓷纤维研究进展[J].中国材料进展,2012,31(10):1-7.
• [4]T Wideman,E Cortez,E E Remsen,et al.Reactions of monofunctional boranes with hydridopolysilazane:synthesis,characterization,and ceramic conversion reactions of new processible precursors to SiNCB ceramic materials[J].Chemistry of Materials,1997,9:2 218-2 230.
• [5]T Wideman,E E Remsen,E Cortez,et al.Amine-modified polyborazylenes:Second-generation precursors to boron nitride[J].Chemistry of Materials,1998,10:412-421.
• [6]M Jansen.Highly stable ceramics through single source precursors[J].Solid State Ionics,1997,101-103:1-7.
• [7]Y Tang,J Wang,X D Li,et al.Polymer-derived SiBN fiber for hightemperature structure/functional applications[J].Chemisrty A European Journal,2010,16:6 458-6 462.