摘要
采用ＣＦＴ－５００型毛细管流变仪，研究了不同预热时间下ＰＥＴ、ＰＡ６６的流动曲线，非牛顿指数、熔体表观粘度及粘流活化能。结果表明：高聚物的流变性能与预热时间具有相关性，预热时间延长，熔体非牛顿指数下降，熔体表观粘度下降，粘流活化能增加。
The changes of the fiberforming polymer flow cure,noll-Newton index,melt-viscosity as well as viscousactivation at different preheat time are studied by using capillary rheo instrument model CFT-500.It is shownthat the preheat tirne does affect the fiberforming polymer flowing function. The longer the preheat time is,the lower the non-Newton index changes. The rnelt viscosity decreases and the viscous activation engergy in-creases with increasing preheat time.
出处
《合成纤维工业》
CAS
CSCD
1994年第1期27-30,共4页
China Synthetic Fiber Industry
关键词
预热时间
变性聚酯
涤纶
PA66
PET
preheat time
rheological characteristics
