张飒,王建江,赵芳
ZHANG Sa,WANG Jian-jiang,ZHAO Fang

• 1:陆军工程大学石家庄校区

摘要(Abstract)：

通过调节静电纺丝过程环境因素制备了CoAc_2/PAN前驱体纤维,再经过热处理得到Co/C复合纳米纤维,分析了预氧化温度对纤维形貌与结构的影响。研究结果表明:当预氧化温度为160℃时,纤维中的PAN未形成稳定的耐热梯形结构,在碳化时纤维扭曲,生成枝节状物质;当预氧化温度为230℃时,碳化后可得到表面光滑、均匀,结构完好的Co/C复合纳米纤维;当预氧化温度为300℃时,纤维中的聚合物大分子遭到破坏,导致后续的碳化结晶过程无法正常进行,纤维形成颗粒聚集态。
CoAc_2/PAN nanofibers were prepared by adjusting the environmental factors of electrospinning,and then the Co/C composite nanofibers were obtained through the heat treatment process. Effects of the pre-oxidation temperature on the morphology and structure of nanofibers were discussed. The results show that when the temperature is 160 ℃, the PAN in the fibers can't form a stable structure, the fibers are twisted during carbonization, and dendritic substance is formed. When the temperature is 230 ℃, after carbonization, Co/C composite nanofibers with smooth surface and good structure are prepared. When the temperature is 300 ℃, the polymer macromolecules in the fiber are destroyed, resulting in abnormal carbonization fibers are aggregated by particles.

关键词(KeyWords)： 静电纺丝;预氧化;形貌;复合纳米纤维
electrospinning;pre-oxidation;morphology;composite nanofiber

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张飒,王建江,赵芳
ZHANG Sa,WANG Jian-jiang,ZHAO Fang

DOI: 10.16090/j.cnki.hcxw.20190114.009

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