预氧化工艺对静电纺PAN纳米纤维毡结构和性能的影响  

Effect of the Pre-oxidation Condition on the Structure and Property of Electrospinning Polyacrylonitrile Fibers Web

作　　者：覃小红[1] 赵从涛[1] 杨恩龙[1] 王善元[1] 

机构地区：[1]东华大学纺织学院,上海201620

出　　处：《东华大学学报（自然科学版）》2008年第5期522-527,539,共7页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金资助项目(10602014)

摘　　要：通过静电纺丝法制得聚丙烯腈(PAN)纳米纤维毡,再经过预氧化得到预氧化毡.分析了在预氧化毡制备过程中温度和升温速度对预氧化毡的结构和性能的影响.研究结果表明:随着温度的升高,预氧化毡的拉伸性能和含水率逐渐增强,质量损失率和环化度在220～250℃之间快速提高;随着升温速度的增加,质量损失率和断裂强力逐渐增加,而含水率在5℃/min时最高.Polyacrylonitrile （PAN） fibers web was fabricated by electrospinning, and then was preoxidated. Effects of the temperature and pre-heating rate on the structure and property of pre-oxidation web were discussed. The results showed that with the increasing temperature, the tensile properties and moisture content gradually increased. Mass toss rate and cyclization index were also found to qucikly increase in the range 220 - 250 ℃. With the increasing heating rate, mass loss rate and breaking strength gradually increased and the moisture content reached its maximum at 5 ℃/min.

关 键 词：聚丙烯腈(PAN) 静电纺丝 预氧化 环化度 碳纳米纤维毡 

分 类 号：TQ342.74[化学工程—化纤工业]