PP/LCP复合材料的物性及力学特性

通过对容易再生的PP/LCP复合材料的微观结构、动态粘弹性特性、热膨胀特性以及力学特性进行讨论,明确了PP/LCP虽为不相溶的两相复合材料,但由于PP和LCP相的热膨胀系数不同,使两相具有比较好的界面结合强度。当LCP加入量低于40 ％时,形成以PP为基LCP为纤维状的强化相并沿流动方向分布。LCP的含量高于60 ％后,PP相的存在对复合材料的延性及强度均带来不利影响。 

PHYSICAL AND MECHANICAL PROPERTIES OF PP/LCP COMPOSITES

The microstructure, dynamic visco elasticity, thermal expansion property and mechanical property of easy recycling PP/LCP composites are discussed in this paper. Not only the LCP is not dissolved into PP phase, but also two phases of PP and LCP possess good bonding strength because there were differences in the thermal expansion coefficient between the PP and LCP phases. When the addition content of LCP was less than 40 %, a reinforcement phase with LCP as fiber situatied in PP matrix was formed and distributed in the flow direction. When the addition content of LCP was more than 60 %, the ductile and strength properties would decrease due to the existence of PP phase.