摘要
树脂本身强度及树脂与碳纤维之间的界面强度是影响连续碳纤维增强热塑性复合材料力学性能的重要因素。为了提高连续碳纤维增强聚丙烯基(CF/PP)热塑性树脂基复合材料的力学性能,本文通过添加马来酸酐接枝聚丙烯(PP-g-MAH)及氨基化纳米二氧化硅(SiO_(2)-NH_(2))对高熔指PP进行改性,先后通过熔融浸渍和热压成型,制备连续碳纤维增强聚丙烯热塑性树脂基复合材料。结果表明:添加PP-g-MAH与SiO_(2)-NH_(2)使PP的结晶度提升2.5%,拉伸强度提升4.8%,弯曲强度提升5.3%;CF/PP复合材料的弯曲强度和层间剪切强度分别达到543.7 MPa和17.2 MPa,分别提升112.2%和66.0%。
The strength of the resin itself and the interface strength between the resin and carbon fiber are im-portant factors affecting the mechanical properties of continuous carbon fiber reinforced thermoplastic composites.In order to improve the mechanical properties of continuous carbon fiber reinforced polypropylene(CF/PP)thermo-plastic resin based composites,this paper modified high melt index PP by adding maleic anhydride grafted polypro-pylene(PP-g-MAH)and aminated nano silica(SiO_(2)-NH_(2)).Continuous carbon fiber reinforced polypropylene thermoplastic resin based composites were prepared by melt impregnation and hot pressing.The results showed that the addition of PP-g-MAH and SiO_(2)-NH_(2) increased the crystallinity of PP by 2.5%,the tensile strength by 4.8%,and the bending strength by 5.3%;the bending strength and interlayer shear strength of CF/PP composite materials were increased by 112.2%and 66.0%,respectively,to 543.7 MPa and 17.2 MPa.
作者
王海旭
孙进
赵巍
时振堂
潘雨曦
刘程
蹇锡高
WANG Haixu;SUN Jin;ZHAO Wei;SHI Zhentang;PAN Yuxi;LIU Cheng;JIAN Xigao(Department of Polymer Materials,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China;Technology Innovation Center of High Performance Resin Materials,Dalian 116012,China;Sinopec(Dalian)Petrochemical Research Institute Co.,Ltd.,Dalian 116041,China)
出处
《复合材料科学与工程》
北大核心
2025年第6期41-47,共7页
Composites Science and Engineering
基金
中国石化科技部项目(222027)。
关键词
连续碳纤维增强热塑性树脂基复合材料
聚丙烯
力学性能
氨基化纳米二氧化硅
马来酸酐接枝聚丙烯
continuous carbon fiber reinforced thermoplastic composite
polypropylene
mechanical property
aminoated silica nanoparticle
maleic anhydride grafted polypropylene
