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

• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2017,（10）
• 页码范围: 1187-1194
• 页数: 8页
• 语种: 英文

摘要

Multi-walled carbon nanotubes (CNTs) were modified by an amination treatment with hexamethylenediamine (HMD),and then bismaleimide (BMl)/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 kJ 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.