论文部分内容阅读
采用正压过滤法制备了多壁碳纳米管(MWCNTs)网格(巴基纸),并采用真空辅助RTM工艺制备了MWCNTs网格/环氧树脂复合材料。通过SEM、FTIR、拉伸测试等对MWCNTs网格的微观形貌和性能进行了表征,并研究了MWCNTs网格/环氧复合材料的拉伸性。结果表明,所制备的功能化MWCNTs网格比较均匀,拉伸强度在22~32MPa之间,拉伸模量约为1GPa,相比未功能化处理的MWCNTs网格,强度最大提高了约167%。功能化MWCNTs网格/环氧树脂复合材料的拉伸强度和拉伸模量可达到152MPa和6.48GPa,相比空白环氧树脂提高了约1倍以上,拉伸试样断面SEM表明,环氧树脂对功能化MWCNTs网格的浸润效果良好,界面结合紧密,有效地提高了复合材料的力学性能。
Multi-walled carbon nanotubes (MWCNTs) grids (Baji paper) were prepared by a positive pressure filtration method and MWCNTs grid / epoxy composites were prepared by vacuum-assisted RTM process. The morphology and properties of the MWCNTs grids were characterized by SEM, FTIR and tensile test. The tensile properties of the MWCNTs grid / epoxy composites were also investigated. The results show that the prepared MWCNTs mesh is more uniform, the tensile strength is between 22 MPa and 32 MPa, and the tensile modulus is about 1 GPa. Compared with the unfunctionalized MWCNTs, the intensity of MWCNTs increases about 167% . The tensile strength and tensile modulus of the functionalized MWCNTs / epoxy composites can reach 152MPa and 6.48GPa, respectively, which is about one times higher than that of the blank epoxy resin. The cross-sectional SEM of the tensile specimen shows that the epoxy The resin has good wetting effect on the functionalized MWCNTs meshes, and the interface is close and effectively improves the mechanical properties of the composites.