Preparation and mechanical properties of silicon oxycarbide fibers from electrospinning/sol-gel process

被引：28

作者：

Wang, Xiaofei ^{[1
]}

Gong, Cairong ^{[1
]}

Fan, Guoliang ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Ceramics; Sol-gel chemistry; Electron microscopy; Mechanical properties; GLASS-FIBERS; CERAMIC FIBERS; NANOFIBERS; FABRICATION; COMPOSITES; HYDROLYSIS; PYROLYSIS; ALKOXIDES; ALCOHOL);

D O I：

10.1016/j.materresbull.2011.08.052

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Silicon oxycarbide (SiOC) fibers were produced through the electrospinning of the solution containing vinyltrimethoxysilane and tetraethoxysilane in the course of sol-gel reaction with pyrolysis to ceramic. The effect of the amount of spinning agent Polyvinylpyrrolidone (PVP) on the dope spinnability was investigated. At a mass ratio of PVP/alkoxides = 0.05, the spinning sol exhibited an optimal spinnable time of 50 min and generated a large quantity of fibers. Electrospun fibers were characterized by Fourier transform infrared spectroscopy (FTIR), thermo gravimetric analysis-differential scanning calorimetry (TGA-DSC), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The SEM results revealed that the SiOC fibers had a smooth surface and dense cross-section, free of residue pores and cracks. The XPS results gave high content of SiC (13.99%) in SiOC fibers. The SiOC fibers prepared at 1000 degrees C had a high tensile strength of 967 MPa and Young's modulus of 58 GPa. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2398 / 2402

页数：5

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