Mechanical Properties and Fracture Mechanism of a Glass Fiber Reinforced Polypropylene Composites
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2020年第3期
论文作者：娄淑梅 YIN Wenying MA Xiaodong YUAN Jianjun 王清标
文章页码：629 - 634
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.
娄淑梅1,2，YIN Wenying1,2，MA Xiaodong1,2，YUAN Jianjun1,2，王清标2,3
1. Department of Mechanical and Electrical Engineering, Shandong University of Science and Technology2. National Engineering Laboratory for Coalmine Backfilling Mining, Shandong University of Science and Technology3. Department of Resource and Civil Engineering, Shandong University of Science and Technology
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.
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