摘要
采用硅烷偶联剂KH550,KH560和KH570对石墨烯(GNPs)进行表面改性,通过预混、熔融共混、挤出制备了聚丙烯(PP)/改性GNPs复合材料,研究了3种硅烷偶联剂对PP/GNPs复合材料性能的影响。结果表明:与PP/GNPs相比,PP/改性GNPs复合材料的力学性能明显提升,KH560改性PP/GNPs复合材料的拉伸强度、弯曲强度和冲击强度分别提升了11.3%,12.3%和89.4%,起始分解温度提高了31℃,但PP/改性GNPs复合材料的电导率和导热系数提高不明显。
The surface of graphene(GNPs)was modified with silane coupling agents KH550,KH560 and KH570,and polypropylene(PP)/modified GNPs composites were prepared by premixing,melt blending and extrusion.The effects of three coupling agents on the properties of PP/GNPs composites were studied.The results show that compared with PP/GNPs,the mechanical properties of PP/modified GNPs composites are significantly improved,and the tensile strength,flexural strength and impact strength of KH560 modified PP/GNPs composites increase by 11.3%,12.3%and 89.4%,respectively,and the initial decomposition temperature increases by 31℃,but the conductivity and thermal conductivity of PP/modified GNPs composites are not significantly improved.
作者
古莘旺
郭茂
邓林寿
王彩红
鲁圣军
Gu Xinwang;Guo Mao;Deng Linshou;Wang Caihong;Lu Shengjun(School of Materials and Metallurgy,Guizhou University,Guiyang,Guizhou,550025;Guizhou Shengyang Pipeline Technology Co.,Ltd.,Guiyang,Guizhou,550025;School of Chemistry and Chemical Engineering,Guizhou University,Guiding,Guizhou,551302)
出处
《现代塑料加工应用》
CAS
2022年第1期40-43,共4页
Modern Plastics Processing and Applications
基金
贵州省“百层次”创新型人才项目黔科合平台人才﹝2016﹞5653
贵州晟扬管道科技有限公司横向项目(K19-0110-012)。
关键词
聚丙烯
石墨烯
硅烷偶联剂
导热系数
力学性能
polypropylene
graphene
silane coupling agent
thermal conductivity
mechanical property
