摘要
采用锥板流变仪研究了本实验室合成的含对羟基苯甲酸、对苯二甲酸、间苯二酚、４，４′－二羟二苯酮共聚酯的流变行为，结果表明，该共聚物具有典型的热致液晶性聚合物的流变特性。
The rheological behavior of the copolyester containing p hydroxybenzoic acid, terephthalic acid, resorcinol and bis(4 hydroxyphenyl)methanone have been studied. The relationship between viscosity and shear rate showed the shear thin effect. At low shear rate (<6 s -1 ), viscosity reduced rapidly as the shear rate increase. At 320 ℃, 2.22 s -1 , the viscosity didn′t change with time before 40 min, then rose slowly, at 53 min reached a maximum value. At 2.22 s -1 , the viscosity was sensitive to the temperature. All results showed that the copolyester possessed the rheological behavior of thermotropic liquid crystalline polymer and shear sensitive.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1997年第2期123-125,共3页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目
关键词
苯酮
液晶共聚酯
流变行为
聚酯
共聚酯
bis(4 hydroxyphenyl)methanone
thermotropic liquid crystalline copolyester
rheological behaviour
shear sensitive
