【摘要】 采用熔融共混法制备G-MWNT(石墨化碳纳米管)/Fe/ABS新型屏蔽复合材料,研究材料的综合性能及其机理,初步探讨了该材料微观结构与性能之间的关系。G-MWNT质量分数为35%~40%时,对复合材料的抗拉强度、拉伸模量、硬度能起到最大增强效果。而随着G-MWNT含量的增加,复合材料的屏蔽效能明显增强,在50 k~1.5 GHz均有良好的屏蔽性能。此外纳米铁粉能显著增强和改善碳纳米管的电磁屏蔽性能。更多还原

【Abstract】 G-MWNT(graphite multi-wall carbon nanotubes)/Fe/ABS composite is prepared by the way of melt blending.The mechanical properties and shielding effectiveness of the composite are tested,and the effect of G-MWNT content on the performance and microstructure of the ABS composites is investigated.The results indicate that G-MWNT can maximally improve the tensile strength and modulus,and micro-hardness of ABS when the mass ratio of G-MWNT is 35%-40%.The electromagnetic shielding effectiveness of the composite increases obviously with the increase of G-MWNT/Fe mass fraction,and the composite has excellent shielding properties in the waveband range of 50 kHz to 1.5 GHz.The electromagnetic shielding effectiveness can be also remarkably improved by adding Fe nano-powder into the composite.更多还原