石墨烯纳米片对碳纤维/聚丙烯复合材料导热及力学性能的影响

玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (1): 11-14.

石墨烯纳米片对碳纤维/聚丙烯复合材料导热及力学性能的影响

夏雪, 梅启林^*, 王聪, 周宵

武汉理工大学材料科学与工程学院,武汉430070

收稿日期:2018-03-09 出版日期:2019-01-28 发布日期:2019-01-28
通讯作者: 梅启林(1970-),男,教授,主要从事树脂基复合材料方面的研究,meiqilin@whut.edu.cn。
作者简介:夏雪(1993-),女,硕士研究生,主要从事树脂基复合材料方面的研究。
基金资助:
国家自然科学基金项目(20111J0056)

INFLUENCES OF GRAPHENE NANOSHEETS ON THERMAL CONDUCTIVITY AND MECHANICAL PROPERTIES OF CARBON FIBER/POLYPROPYLENE COMPOSITES

XIA Xue, MEI Qi-lin^*, WANG Cong, ZHOU Xiao

School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

Received:2018-03-09 Online:2019-01-28 Published:2019-01-28

摘要/Abstract

摘要： 采用熔融共混法制备了聚丙烯(PP)/石墨烯纳米片(GNSs)/碳纤维(CF)复合材料,研究了石墨烯纳米片含量对其导热性能和力学性能的影响。结果表明,石墨烯纳米片和碳纤维混合使用,不仅对导热有明显的协同作用,力学性能也有一定提升。PP/GNSs(3 phr)/CF(2 phr)复合材料热导率为0.42 W/(m·K),相对于纯PP、PP/GNSs(3 phr)复合材料分别提高了110%、31%;该复合材料的拉伸强度和弯曲强度最大相对于纯PP提高了12%和13%,相对于PP/CF(2 phr)复合材料提高了8%和12%。

关键词: 碳纤维, 导热性能, 石墨烯纳米片, 聚丙烯

Abstract: Polypropylene (PP) is a high strength thermoplastic with low thermal conductivity which limits its application in many fields. So it is necessary to improve the thermal conductivity of PP composite material.Graphene nanosheets (GNSs) are a kind of layered micro-scale materials with excellent mechanical properties and thermal conductivity, but few research has been done. Carbon fiber (CF) is a high-strength and high-modulus fiber which can improve the PP/GNSs/CF mechanical properties and thermal conductivity. PP/GNSs/CF composites were prepared by melt blending to study the effect of different GNSs mass fractions on the mechanical properties and thermal conductivity of composites. The results show that the mixed use of GNSs and CF not only has obvious synergistic effect on the thermal conductivity, but also improves the mechanical properties. The thermal conductivity of PP/GNSs (3 phr)/CF (2 phr) composites is 0.42 W/(m·K), which was increased by 110% compared with pure PP. The tensile strength and flexural strength of the composites were increased to 38.0 MPa and 56.7 MPa, respectively, which were increased by 12% and 13%, respectively, compared with pure PP.

Key words: carbon fiber, thermal conductivity, graphene nanosheets, polypropylene

中图分类号:

TB332

夏雪, 梅启林, 王聪, 周宵. 石墨烯纳米片对碳纤维/聚丙烯复合材料导热及力学性能的影响[J]. 玻璃钢/复合材料, 2019, 0(1): 11-14.

XIA Xue, MEI Qi-lin, WANG Cong, ZHOU Xiao. INFLUENCES OF GRAPHENE NANOSHEETS ON THERMAL CONDUCTIVITY AND MECHANICAL PROPERTIES OF CARBON FIBER/POLYPROPYLENE COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2019, 0(1): 11-14.

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