静电纺丝法制备SiC纤维  

Fabrication of Silicon Carbide Fibers by Electrospinning

作　　者：张磊[1] 李佳艳[1] 谭毅[1] 孙妍[1] 

机构地区：[1]大连理工大学材料科学与工程学院,大连116024

出　　处：《材料导报》2010年第8期81-83,93,共4页Materials Reports

基　　金：中国博士后基金(20070420204);中国博士后科学基金特别资助(200801384)

摘　　要：以聚碳硅烷(PCS)和聚乙烯吡咯烷酮(PVP)为原料制得前躯体溶液,采用静电纺丝法制备出PCS/PVP前驱体纤维,经高温分解得到SiC纤维。X射线衍射证实纤维中生成了立方结构β-SiC相。采用扫描电子显微镜(SEM)对前驱体纤维及煅烧后SiC纤维的形貌进行了观察,所制备的SiC纤维直径很小,但均匀性不是很高,且表面依附一层非晶形SiO2薄膜层。SiC fibers are obtained by pyrolysising of electrospun polycarbosilane （PCS）/polyvinylpyrrolidone （PVP） precursor fibers after curing process which to prevent fibers melting. The XRD result indicates that the cubic β-SiC phase is successfully synthesized in fibers. The SEM analysis shows the morphology of PCS precursor fibers and SiC fibers. The diameters of the fibers are very small, but the uniformity is poor and the surface are coated with an a- morphous layer of SiO2.

关 键 词：聚碳硅烷 不熔化处理 静电纺丝法 SIC纤维 

分 类 号：TQ174.758.21[化学工程—陶瓷工业]