残余溶剂DMSO对PAN纤维结构及热性能的影响  

EFFECT OF THE REMAINS OF DIMETHYL SULFOXIDE ON THE STRUCTURE AND THERMAL PROPERTIES OF PAN PRECURSOR

作　　者：李常清[1] 徐梁华[1] 王晓玲[1] 刘淑金[1] 曹维宇[1] 陈宏卓[1] 

机构地区：[1]北京化工大学炭纤维及复合材料研究所

出　　处：《高分子材料科学与工程》2003年第4期89-91,共3页Polymer Materials Science & Engineering

摘　　要：在 PAN/ DMSO湿法纺丝体系中 ,改变水洗条件 ,得到含有不同 DMSO含量的聚丙烯腈原丝。通过光学显微镜、X射线衍射、DSC和 TG等分析测试手段 ,研究了残余溶剂二甲基亚砜 (DMSO)对 PAN纤维结构及热性能的影响。在纤维低温热处理过程中 ,原丝中痕量 DMSO的存在 ,可以改变纤维的截面形状、破坏纤维的晶态结构 。PAN precursor containing of different amount of DMSO was obtained by altering water-washing technology in PAN/DMSO wet spinning. It was shown that the remains of DMSO had effect on the structure and thermol properties of PAN fiber, which were determined by optical microscope, X-ray diffractometer, differential scanning calorimeter and thermol gravity. In the process of low-heat-treatment, the trace remains of DMSO in PAN precursor can change the cross section of the fiber, damaging the crystalline structure, decreasing the heat stability of fiber.

关 键 词：残余溶剂 DMSO PAN纤维 结构 热性能 聚丙烯腈纤维 

分 类 号：TQ342.31[化学工程—化纤工业]