摘要
用ＸＬＹ－Ⅱ型流变仪研究了ＰＦ－Ⅱ尼龙的流变行为，得到了熔体表观粘度与温度，剪切应力，剪切速率的流动曲线以及剪切应力与剪切速率的关系。结果表明，ＰＦ－Ⅱ尼龙是非牛顿假塑性流体；表观粘度与温度关系符合Ａｒｈｅｎｉｕｓ方程，随温度升高，非牛顿指数变大，在２１０～２５０℃范围内，其非牛顿指数ｎ为０．４９～０．６５；
The rheological behaviours of PF Ⅱ nylon have been studied by means of XLY Ⅱ rheometer. The curves of lg η a～1/ T , lg η a～lg w, lg η a～lg τ w and lg τ w～lg w have been obtained. The results show that the PF Ⅱ nylon is a non Newtonian and pseudoplastic fluid. The relation between apparent viscosity and temperature follows Arrhenius equation. The non Newtonian indexes are in the range of 0.49～0.65 when the temperatures are in 210～250 ℃ and n increase with the temperature rising.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1997年第2期129-131,共3页
Polymer Materials Science & Engineering
