摘要
To study the effect of some parameters, such as, length and fraction of glass fiber (GF), and the fraction of maleic anhydride grafted polypropylene (PP-g-MAH), on the mechanical properties of glass fiber reinforced polypropylene (GF/PP) composites, tensile tests, bending tests and impact tests were conducted. Scanning electron microscope (SEM) was used to characterize the fracture mechanisms of the composites. The results show that, compared with 3 mm GF, 9 mm GF can significantly improve the strength of the composite better. Addition of PP-g-MAH, a kind of grafting agent, into the PP-30% LGF composite can result in a better mechanical properties because of the strengthening of the bonding interface between the matrix and the fiber. When the mass fraction of GF is 30% and the PP-g-MAH fraction is 6%, the mechanical properties of the composite are the best.
作者
LOU Shumei
YIN Wenying
MA Xiaodong
YUAN Jianjun
WANG Qingbiao
娄淑梅;YIN Wenying;MA Xiaodong;YUAN Jianjun;王清标(Department of Mechanical and Electrical Engineering,Shandong University of Science and Technology,Tai'an 271019,China;National Engineering Laboratory for Coalmine Backfilling Mining,Shandong University of Science and Technology,Tai'an 271019,Chi-na;Department of Resource and Civil Engineering,Shandong University of Science and Technology,Tai'an,271019,China)
基金
Funded by National Natural Science Foundation of China(Nos.51705295,51778351)
the Science and Technology Project for the Universities of Shandong Province (No.J16LA58)
Shandong University of Science and Technology Research Fund (No.2018 TDJH101)