聚乙二醇改性对聚丙烯腈树脂及纺丝液性能的影响  

Influence of Polyethylene Plycol Modification on Properties of Polyacrylonitirle Resin and Its Spinning Solution

作　　者：史纪友[1,2] 吕春祥[2,3] 张寿春[2,3] 周普查[2,3] 贺福[2,3] 

机构地区：[1]中国科学院研究生院,北京100039 [2]碳纤维制备技术国家工程实验室,太原030001 [3]中国科学院山西煤炭化学研究所炭材料重点实验室,太原030001

出　　处：《材料导报》2011年第10期32-35,共4页Materials Reports

基　　金：国家自然科学基金项目(50602045)

摘　　要：通过在聚合前加入聚乙二醇-600(PEG-600)对丙烯腈-衣康酸二元共聚的聚丙烯腈(PAN)纺丝液进行了改性。采用乌氏粘度计、红外光谱仪、接触角测量仪、毛细管流变仪研究了PEG-600用量对PAN树脂的分子量、亲水性以及纺丝液流变性能的影响。结果表明,随PEG-600用量的增加,PAN树脂的分子量逐渐降低,与未改性的PAN树脂相比,其亲水性先减小后增加;由于随PEG-600用量的增加,树脂的分子量降低以及PEG-600的增塑作用增强使纺丝液的非牛顿指数n逐渐增加,流变稳定性更好。Polyacrylonitrile spinning solution produced by acrylonitrile-itaconic acid binary copolymer-ization was modified by adding polyethylene glycol-600 before polymerization. The influences of PEG-600 content on the viscosity average molecular weight, hydrophilicity and contact angle of PAN resin were characterized by ubbelohde viscometer, contact angle and capillary rheorneter. The results show that, when the PEG-600 increases, the viscosity average molecular weight of PAN resin decreases; compared with the PAN resin without PEG-600, the hydrophilieity of the modified PAN resin decreases at first, then increases, because of the PEG-600 degree increases, the lower of the viscosity average molecular weight of the PAN resin and the increase of the plasticized effect of PEG-600, the nonNewtonian index of spinning solution increases, the rehology stability of spinning solution changes for the better.

关 键 词：聚乙二醇 聚丙烯腈 粘均分子量 接触角 

分 类 号：TQ340.61[化学工程—化纤工业]