摘要
研究钛酸钾晶须（TK）增强聚醚砜（PES）复合材料的流变性能及形态．结果表明，PES／TK复合材料各个样品的熔体皆为非牛顿流体，在低剪切应力时呈现剪切增稠趋势，在高剪切应力区呈现剪切变稀趋势，75／25样品为假塑性流体．PES及其复合材料的粘流活化能较大，表观粘度对温度极为敏感；晶须的含量增加，PES／TK复合材料的粘流活化能升高；晶须含量及温度不同时，流动状态也不同．
A series of poly(ether sulfone)/potassium titanate whisker (PES/TK) composites was prepared by means of twin-screw extruder. The rheological behavior and morphology were characterized by means of Rheometer(XYL-Ⅱ) and SEM respsctively. The results showed that PES and its composites with TK were Non-Newtonian fluid, and they exhibited shearing thickening trend at low shearing stress, exhibited shearing thining trend at high shearing stress. Viscos flowing activation energy of PES/TK was increased with TK content. The flowing morphology of PES/TK of which the TK content was different was different. Tile flowing morphology of the same PES/TK composites changed with the change of temperature. Viscos flowing activation energies of PES and PES/TK were over 100 kJ/mol, so their melting viscosity could be apparently decreased by raising temperature.
出处
《吉林大学自然科学学报》
CAS
CSCD
1998年第1期80-84,共5页
Acta Scientiarum Naturalium Universitatis Jilinensis
基金
国家自然科学基金
关键词
聚醚砜
钛酸钾
晶须
流变
形态
复合材料
poly(ether sulfone), potassium titanate whisker, rheology, morphology
