长玻纤增强聚丙烯复合材料的制备及力学性能
刘琳,黄诚珑
同济大学材料科学与工程学院,上海 200092
Preparation and Mechanical Properties of Long Glass Fiber Reinforced Polypropylene Composite
Liu Lin, Huang Chenglong
School of Material Science and Engineering, Tongji University, Shanghai 200092, China
摘要:使用熔融浸渍法制备了长玻璃纤维增强聚丙烯复合材料(LFTPP-G),研究了不同纤维含量、不同牵引速度及不同相容剂马来酸酐接枝聚丙烯(PP-g-MAH)添加量对复合材料力学性能的影响。结果表明,玻璃纤维在复合材料体系中起增强增韧作用,复合材料力学性能随纤维含量增加而升高;提高牵引速度可以提高生产效率,但复合材料的力学性能及纤维分散性能随之降低;相容剂PP-g-MAH的加入改善了玻璃纤维与树脂的界面结合。当使用自制的浸渍装置且玻璃纤维质量分数为50%、牵引速度为30 m/min、相容剂PP-g-MAH质量分数2%时,制得LFTPP-G具有较好的综合力学性能,其缺口冲击强度相较于纯聚丙烯树脂提高了1323%。
Abstract:By using melt impregnation method, long glass fiber reinforced polypropylene composite (LFTPP-G) was prepared. The effects of glass fiber content, pulling speed and compatibilizer PP-g-MAH content on the mechanical properties were investigated. The results show that, glass fiber reinforces and toughens the composite and improves the mechanical properties of LFTPP-G when fiber content increases. Increasing pulling speed can improve the production efficiency but the mechanical properties and fiber dispersion drop along with the speed increases. PP-g-MAH improves the interfacial bonding between the resin martix and glass fiber. When the self-developed impregnation die is used, the glass fiber content is 50wt%, the pulling speed is 30 m/min, the PP-g-MAH content is 2wt%, the comprehensive mechanical properties of LFTPP-G show the best, comparing with neat polypropylene resin, its notched impact strength is improved by 1323%.
关键词:长玻纤增强聚丙烯复合材料;力学性能;纤维分散;界面结合
Keywords:long glass fiber reinforced polypropylene composite; mechanical property; fiber dispersion; interfacial bonding
本文引用格式:
刘琳,黄诚珑.长玻纤增强聚丙烯复合材料的制备及力学性能[J].工程塑料应用,2021,49(3):42-46.
Liu Lin,Huang Chenglong. Preparation and mechanical properties of long glass fiber reinforced polypropylene composite[J]. Engineering Plastics Application,2021,49(3):42-46.
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