基于汽车前端框架用玻纤增强PP复合材料力学性能研究  

Study on the Mechanical Properties of Glass Fiber Reinforced Polypropylene Composite Based on the Front End Frame of a Vehicle

作　　者：朱春龙[1] 李怀栋[2] 付发祥 周顶顶 王博 

机构地区：[1]上海大众汽车有限公司,上海201805 [2]南京工业大学材料学院,江苏南京210009 [3]南京京锦元科技实业有限公司,江苏南京211200

出　　处：《塑料工业》2015年第7期89-92,112,共5页China Plastics Industry

摘　　要：采用双螺杆挤出机挤出造粒的方式,研究了双螺杆挤出工艺、长玻纤含量、聚丙烯接枝马来酸酐(PP-gMAH)用量和树脂牌号对玻纤增强聚丙烯(PP)复合材料性能的影响,以及玻纤(GF)/PP/PP-g-MAH的微观形态。结果表明:随着螺杆捏合块组合剪切力的增强、螺杆转速的提高以及PP-g-MAH用量的增加,复合材料的力学性能呈现先增加后减小的趋势,材料断面呈韧性断裂。基体树脂PP的熔体质量流动速率越大,复合材料的力学性能越好。当GF/PP/PP-g-MAH/其他助剂质量比为50/46/3/1时,复合材料的性能最优,能够满足汽车前端模块对该材料的性能要求。By the twin-screw extruder processing, the effects of extrusion process, the content of long glass fiber （GF） and maleic anhydride grafted polypropylene （PP-g-MAH） and resin grade on properties of glass fiber reinforced polypropylene composite were investigated. The microstructure of GF/PP/PP-g-MAH composites was also investigated. The results showed that： with the increase of the shearing stress of the screw kneading block combinations or the screw rotation speed or the content of PP-g-MAH, the mechanical properties of the composite were increased first and decreased then. The fracture of the composite was ductile fracture. With the increase of the melt flowing rate of the resin, the mechanical properties of the composite increased. With the mass ratio of GF/PP/PP-g-MAH/other reagents was 50/46/3/1, the mechanical properties of the composite were the best, which could meet the performance requirements of the front end module of a vehicle.

关 键 词：玻璃纤维 聚丙烯 玻纤含量 聚丙烯接枝马来酸酐 加工工艺 

分 类 号：TQ327.1[化学工程—合成树脂塑料工业]