预氧丝体密度对聚丙烯腈基碳纤维本体性能的影响  

Effect of Pre-Oxidized Fiber Density on the Properties of Polyacrylonitrile-Besed Carbon Fibers

作　　者：钱鑫 皇静 张永刚 杨建行 

机构地区：[1]中国科学院宁波材料技术与工程研究所碳纤维制备技术国家工程实验室,浙江宁波315201

出　　处：《合成纤维》2014年第6期24-26,共3页Synthetic Fiber in China

基　　金：浙江省重点科技创新团队项目(2011R50013);国家重点基础研究发展计划资助项目(2011CB605602)

摘　　要：通过调整预氧化温度及走丝速度,研究了两者对聚丙烯腈基预氧丝体密度的影响,并进一步研究了预氧丝体密度对碳纤维体密度、拉伸强度及拉伸模量的影响。结果表明:提高预氧化温度有利于预氧丝体密度的增加,而走丝速度提高后预氧丝体密度有所下降;碳纤维体密度会随着预氧丝体密度的增加而降低;随着预氧丝体密度的提高,碳纤维拉伸强度出现先上升后下降的趋势,但是预氧丝体密度对拉伸模量影响不大。The effects of pre-oxidation temperature and fiber running speed on the density of pre-oxidized fiber were researched, and the effects of pre-oxidized fiber density on the density, tensile strength and tensile modulus of carbon fiber were also studied. Results showed that a higher pre-oxidation temperature led to an increase in the density of pre-oxidized fiber. However, the pre-oxidized fiber density decreased with the improvement of fiber running speed. When the density of pre-oxidized fiber increased, the density of carbon fiber gradually decreased, and the tensile strength of carbon fibers increased firstly which was followed by a decline. However, the effect of pre-oxidized fiber density was not obvious.

关 键 词：聚丙烯腈基碳纤维 预氧化 体密度 拉伸强度 拉伸模量 

分 类 号：TQ342.742[化学工程—化纤工业]