粉共混材料力学性能及流变行为研究
张朋飞;王琳
【期刊名称】《湖南农机》 【年(卷),期】2013(000)007
【摘要】 文章采用熔融共混法制备了聚丙烯/有机微硅粉复合材料。通过毛细管流变仪研究了聚丙烯/有机微硅粉复合材料熔体的流变行为，讨论了不同有机微硅粉添加量对共混材料剪切速率、表观粘度、非牛顿指数的影响；考察了不同组成复合材料的抗冲击强度、拉伸强度、硬度等力学性能。结果表明：随着复合材料中有机微硅粉含量的增加，熔体的假塑性特征逐渐减弱，非牛顿指数逐渐增大。当有机微硅粉含量为1 wt%时，复合材料具有最高的抗冲击强度，比纯聚丙烯材料提高了18.9 kJ/m2；拉伸强度随有机微硅粉的增加而降低。在低含量时有机微硅粉可以作为聚丙烯材料的抗冲击改性剂。%In this article, the composite material of polypropylene/organic micro silicon powder were prepared by melt-blending method.The rheological behavior of melts of polypropylene/organic micro silicon powder was investigated by capil-lary rheometer. The article discusses the influence of different organic micro silicon powder adding quantity for shearing rate and apparent viscosity and non-Newtonian index of blendingmaterial.The article investigates mechanical property of the impact strength, tensile strength and hardness of different composition of composite materials. The results show that the pseudoplastic characteristics of melt will decrease and the non-Newtonian index will increase with increasing the
粉共混材料力学性能及流变行为研究
