摘要
研究了不同组成的 Ｈ Ｄ Ｐ Ｅ／ Ｍ Ｐ Ｅ／ Ｐ Ａ１０１０ 共混体系熔体的流动曲线，表观粘度与温度、组成的关系，流动指数与剪切应力的关系等流变特性。结果表明，在所研究的剪切应力、剪切速率、温度及组成范围内，该共混体系熔体的ｌｇτ～ｌｇγ Ｐ 关系曲线都不同程度地偏离牛顿流体曲线，为非牛顿流体；由ｌｇηａ ～ｌｇγ Ｐ 和ｌｇηａ ～ｌｇτ的曲线可知，该共混物熔体属于假塑性流体。表观熔体粘度与温度的关系符合阿累尼乌斯方程，与组成的关系偏离对数加和规律，但偏离程度较小。随着剪切应力的提高，流动指数减小。该共混物的表观熔体粘度对温度变化的敏感性比 Ｈ Ｄ Ｐ Ｅ突出。
The rheological behaviors, such as the flow curve, the relationship of η a~ T , composition and the relationship of n ~ τ etc. have been studied on the HDPE/MPE/PA1010 blends melt. It is found that the flow curves of HDPE/MPE/PA1010 blends all deflect straight line of newton fluid at same temperature, so it is non newton fluid. Within the range of τ , , T and composition, the blends belong to pseudoplastic fluid. The relationship of η a~ T fits Arrhenious Equation. The relationship of η a^composition deflects the logarithmic sum rule but small, this shows that compatibility of blends is good. A similar rule has been observed for the relationship of η a^composition with different T and τ . The flow index decreases with increasing τ . The η a of HDPE/MPE/PA1010 blends is more sensitive to the temperature than that of HDPE.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1999年第5期99-101,共3页
Polymer Materials Science & Engineering
