PAN/DMSO/H_2O溶液的流变学性质  

Reological behaviors of PAN/DMSO/H_2O solution

作　　者：徐海峰[1] 杜卫平[1] 谭连江[1] 陈慧芳[1] 潘鼎[1] 

机构地区：[1]东华大学材料学院,上海201620

出　　处：《合成技术及应用》2008年第4期20-23,共4页Synthetic Technology & Application

基　　金：国家973项目(2006CB605303);国家自然基金项目(50333050);上海市基础理论项目(07DJ14002)

摘　　要：用HAAKE公司RS150L型流变仪对聚丙烯腈(PAN)/二甲基亚砜(DMSO)/去离子水(H_2O)溶液的流变行为进行了测试。结果表明:PAN/DMSO/H_2O溶液受到剪切作用再经过短时间松弛后有较好的保持取向的能力;随着温度的降低,溶液的粘、弹性模量都会升高;结合溶液凝胶点的判定和logG′-logG″图,对体系在不同温度时的状态和均一性进行了研究。The rheological behaviors of PAN/DMSO/H2O solution were tested by HAAKE RS150 L rheometer. It has been shown that： PAN/DMSO/H2O solution maintains the oritaintion well when it is sheared and goes through relaxation for a short time; the viscous-elastic modulus of solution increase with the decrease of temperature. According to the gel point and log G′-log G″ plots, the state and homogeneity of the system were researched at different temperatures.

关 键 词：聚丙烯腈 流变 取向 模量 均一性 

分 类 号：TQ340.141[化学工程—化纤工业]