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中北大学高分子与生物工程研究所
纸质出版:2008
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丁正亚, 李迎春, 王标兵, 等. 尼龙11/EVOH共混物的流变性能研究[J]. 中北大学学报(自然科学版), 2008,29(6):546-549.
丁正亚, 李迎春, 王标兵, et al. The Rheological Behaviour of PA11/EVOH Blends[J]. 2008, 29(6): 546-549.
使用XLY-Ⅱ型毛细管流变仪研究了尼龙11/EVOH共混物的流变特性.实验结果表明:尼龙11/EVOH共混物为假塑性流体
在195~225℃的非牛顿指数为0.46
0
.63
其表观粘度随着EVOH含量的增加先减小后增加
当EVOH含量为10%时
表观粘度最小.EVOH的加入使体系的粘流活化能增大
故熔体的流变性受温度的影响较大.
The rheological behaviour of PA11/EVOH blends is investigated by means of XLYYⅡrheometer.The results show that PA11/EVOH blends are pseudo plastic fluid.The non-Newtonian indexes are ranged from 0.46 to 0.63 in correspondence with the temperature from 195 ℃ to 225 ℃.The apparent viscosity initially reduces with the incorporation of the EVOH
then increases
and achieves the minimal when the content of EVOH is 10%.With the addition of EVOH
the increasing apparent viscous activation energy of blends indicates that the processing temperature has great influence on their rheological behaviour.
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