Structure, mechanical and thermal properties of BMI/E-44/CNTs ternary composites via amination method  

作　　者：Youliang Cheng Bingbing Xia Changqing Fang Lu Yang 

机构地区：[1]Packaging Engineering and Digital Media Technology, Xi'an University of Technology, Xi'an. 710048. China

出　　处：《Journal of Materials Science & Technology》2017年第10期1187-1194,共8页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 51172180 and 51372200);the Scientific Research Plan Project of Shaanxi Education Department (Grant No. 16JK1551);the Science and Technology Plan of Xi’an (Grant No. CXY1430(9));the China Postdoctoral Science Foundation Funded Project (Grant No. 2016M592824)

摘　　要：Multi-walled carbon nanotubes（CNTs） were modified by an amination treatment with hexamethylenediamine（HMD）, and then bismaleimide（BMI）/epoxy（E-44）/CNTs ternary composites were prepared using modified CNTs as the reinforcement via a simple mixing and curing molding method. The results show that the surfaces of CNTs are grafted polymer with the thickness of 3 nm and the dispersity of surface grafted carbon nanotubes（SG-CNTs） in the resin composites can be improved. The prepared composites contain C-C, C-N, C=O and-COOH groups and can keep a smooth surface. In addition, the composites have the flexural strength of 152 MPa, the tensile strength of 73 MPa and the impact strength of 87 k J m^（-2）,respectively, when the weight ratio of BMI to E-44 is 1：8 and the content of SG-CNTs is 2 wt%. However,the thermal stability of the composites with SG-CNTs is a little lower than that of the composites without SG-CNTs.Multi-walled carbon nanotubes（CNTs） were modified by an amination treatment with hexamethylenediamine（HMD）, and then bismaleimide（BMI）/epoxy（E-44）/CNTs ternary composites were prepared using modified CNTs as the reinforcement via a simple mixing and curing molding method. The results show that the surfaces of CNTs are grafted polymer with the thickness of 3 nm and the dispersity of surface grafted carbon nanotubes（SG-CNTs） in the resin composites can be improved. The prepared composites contain C-C, C-N, C=O and-COOH groups and can keep a smooth surface. In addition, the composites have the flexural strength of 152 MPa, the tensile strength of 73 MPa and the impact strength of 87 k J m^（-2）,respectively, when the weight ratio of BMI to E-44 is 1：8 and the content of SG-CNTs is 2 wt%. However,the thermal stability of the composites with SG-CNTs is a little lower than that of the composites without SG-CNTs.

关 键 词：Surface grafted carbon nanotubes Composite materials Mechanical properties Thermal properties 

分 类 号：TB332[一般工业技术—材料科学与工程]