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.
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)