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分子量80万的PAN溶液流变性质的研究
STUDY ON THE RHEOLOGICAL PROPERIES OF PAN WHOSE■IS 800000
【摘要】 使用毛细管流变仪对粘均分子量80万PAN的DMF溶液(浓度8%)的流变性进行了研究。剪切速率()的对数与表观粘度(η)的对数和孔口胀大比(B)的对数都呈现线性关系。η和B都表现出松弛特性,但松弛时间随和温度(T)而变化的规律并不相同,η和B的活化能随而变化的规律亦不相同。
【Abstract】 The rheological properties of PAN(= 800000)-DMF solution(concent = 8%)are studied with a Capil-lary-Rheometer.The relations between the logarithm of shear rate()and the logarithm of apparent viscosi-ty(η)as well the logarithm of dieswell ratio(B)are lineal. The ηand the Ball show relaxation character,butthe regulations of the changes of the relaxation-times with the changes of and temperature(T)are different.The regulations of the changes of the activation energies(E)of apparent viscosity(η)and dieswell ratio(B)with the changes of are also different.
【关键词】 PAN;
流变性;
表观粘度;
孔口胀大;
活化能;
【Key words】 PAN; rhoelogical properties; apparent viscosity; dieswell; activation energies;
【Key words】 PAN; rhoelogical properties; apparent viscosity; dieswell; activation energies;
【基金】 国家自然科学基金,中国石化总公司资助
- 【文献出处】 合成纤维工业 ,CHINA SYNTHETIC FIBER INDUSTRY , 编辑部邮箱 ,1995年05期
- 【分类号】O631.21
- 【被引频次】6
- 【下载频次】113