聚丙烯腈湿法纺丝中纤维结构的形成研究

材料导报, 2005, 19(7): 111-114.

聚丙烯腈湿法纺丝中纤维结构的形成研究

王延相 ^1, , 王成国 ^2, , 朱波 ^3, , 季保华 ^4, , 王强 ^5,

1.山东大学碳纤维工程技术研究中心,济南,250061

2.山东大学碳纤维工程技术研究中心,济南,250061

3.山东大学碳纤维工程技术研究中心,济南,250061

4.山东大学碳纤维工程技术研究中心,济南,250061

5.山东大学碳纤维工程技术研究中心,济南,250061

基金项目: 国家高技术研究发展计划(863计划)(2002AA304130)

关键词：聚丙烯腈 , 拉伸倍数 , 蒸汽热定形 , 结晶度 , 晶粒尺寸

The Formation of Structure of PAN Fibers in Wet-spinning Process of DMSO and Water System

借助于扫描电镜、透射电镜和小角X射线衍射方法,研究了聚丙烯腈湿法纺丝中形成的纤维的结构,结果发现:初生纤维是一种高度溶胀立体网络状的冻胶体,立体网络骨架由大分子链束集组成,大分子链间的缠结是骨架的物理交联点,原丝聚集态结构由里向外由3层组成:外表层是极薄的、密实的皮膜,从皮膜向里是柱状皮层,再向里是芯层.纤维沿径向分布的各层具有不同的取向度,随着凝固率和拉伸率的增加,结晶度增加.同时提高凝固液浓度,增加拉伸倍数,增大拉伸速度,可使晶粒增长.

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材料期刊网

聚丙烯腈湿法纺丝中纤维结构的形成研究

The Formation of Structure of PAN Fibers in Wet-spinning Process of DMSO and Water System

参考文献