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。
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.
出处
《合成纤维工业》
CAS
CSCD
1995年第5期25-29,共5页
China Synthetic Fiber Industry
基金
国家自然科学基金
中国石化总公司资助
关键词
PAN
流变性
表观粘度
活化能
分子量
高聚物
PAN
rhoelogical properties
apparent viscosity
dieswell
activation energies
