摘要
以聚丙烯(PP)为基体、微晶纤维素(MCC)为增强材料、马来酸酐接枝聚丙烯(PP-g-MA)为相容剂,利用双螺杆挤出机制备了PP/MCC/PP-g-MA复合材料,同时研究了该复合材料的力学性能。随后分别选用三元乙丙橡胶(EPDM)和乙烯-辛烯共聚物(POE)对PP/MCC/PP-g-MA复合材料进行增韧改性,考察了两种增韧剂的增韧效果。结果表明:加入PP-g-MA后,PP/MCC复合材料的力学性能明显提高。另外,增韧剂的引入使PP/MCC/PP-g-MA复合材料的冲击性能显著改善,其中POE对复合材料的增韧效果优于EPDM。但是增韧剂的引入会造成复合材料的拉伸强度、弹性模量和弯曲强度分别出现不同程度的下降,其中EPDM增韧复合材料的上述性能下降幅度相对较小。
With polypropylene（PP） as the matrix, micro-crystalline cellulose（MCC） as the reinforcing material, and maleic anhydride-grafted polypropylene（PP-g-MA） as the compatibilizer, the PP/MCC/PP-g-MA composites were prepared through twin screw extruder, and the mechanical properties of the composites were studied. Then the ethylene propylene diene terpolymer（EPDM） and ethylene-octene copolymer（POE） were introduced in the composites（serving as toughening agent）, and the toughening efficiency of the two kinds of toughening agents were compared. The results show that the mechanical properties of PP/MCC composites improves obviously with the addition of PP-g-MA. Moreover, the impact properties of PP/MCC/PP-g-MA composites increase significantly after adding toughening agent, and POE is more effective than EPDM to improve the toughness of the composites. But the tensile strength, elastic modulus and bending strength of the composites decrease with the addition of toughening agents, and the properties of the composites toughened by EPDM declines at a slower rate than that of the composites toughened by POE.
出处
《塑料科技》
CAS
北大核心
2016年第7期27-31,共5页
Plastics Science and Technology
基金
福建省科技厅引导性项目(2016H0031)
南平市科技计划产业支撑项目(N2015H02)
关键词
微晶纤维素
聚丙烯
复合材料
力学性能
Micro-crystalline cellulose
Polypropylene
Composite
Mechanical properties
