Preparation and characterization of N-methylpolyborosilazane as a precursor of SiBN ceramic fibers，ICAFPM 2011先进纤维与聚合物材料国际学术会议（2011.8.15~17，上海）-中国聚合物网,论文下载 -亚博体育

Preparation and characterization of N-methylpolyborosilazane as a precursor of SiBN ceramic fibers

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SiBN ceramic fiber polymer precursor polymerization

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分子表征

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ICAFPM 2011先进纤维与聚合物材料国际学术会议（2011.8.15~17，上海）

简介：

SiBNceramicfiberswithexcellentmechanicalandthermalstabilitycanbeobtainedbyN-methylpolyborosilazaneasthepolymerprecursor.Inthispaper,N-methylpolyborosilazanewaspreparedat150℃underdifferenttimeconditionsandexaminedthemeltspinnabilitybyahanddrawingmethod.Theas-obtainedpolymerprecursorswerecharacterizedbyFTIR,NMR,intrinsicviscosityandTGA,andthemorphologyoffiberwasobservedbySEM.Theresultsshowedthatthepolymerprecursorsobtainedatdifferenttimehadnearlythesamestructure,whichwasalargenetworkstructureconsistedofflexiblelinearstructureresponsibleforthegoodmeltspinnabilityandrigidring,andtheirintrinsicviscosityincreasedwiththeincreaseofthemolecularweightexceptingthepresenceofalargedegreeofcrosslinkinginthepolymer.Thepolymerprecursorobtainedat60hdisplayedagoodmeltspinnabilityandrevealedaceramicyieldof60%upto900℃innitrogenatmosphere.

作者：

DENG Zhihua, HAN Keqing, ZHANG Jing, PENG Yuqing, WANG Zhenghui, YU Muhuo

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2011-10-11 13:19:42

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