碳纳米管增强环氧树脂复合材料阻尼性能的研究

Research on Damping Properties of Multi-wall Carbon Nanotube Reinforced Epoxy Resin Composite Materials

采用热压成型法制备出碳纳米管环氧树脂复合材料，并对其分散性能和阻尼性能进行了研究。扫描电镜（SEM）分析表明，通过超声振荡处理和分散剂辅助处理可以将碳纳米管较好地分散在环氧树脂基体材料中。采用自由振动对数衰减率法和动态热机械分析仪（DMTAV）对复合材料的阻尼性能进行了测试，结果表明，在环氧树脂基体中加入碳纳米管能够提高复合材料的阻尼性能，并且随着碳纳米管质量分数的增加，复合材料的阻尼性能不断增强，掺加直径为10-20nm的碳纳米管比掺加直径为30-50nm的碳纳米管能更大地提高复合材料的阻尼性能。

Carbon nanotubes epoxy resin composite materials were prepared by the hot press method, and their dispersibility and damping properties have been researched respectively. Scanning electron microscope（SEM） analysis suggests that carbon nanotubes can be equably dispersed into epoxy resin matrix composite materials. Meanwhile, nat- ural vibration logarithmic decrement ratio and dynamic mechanism thermo analysis（DMTA V ） were used to test the damping properties of CNTs/Ep composite materials. The results show that carbon nanotube can really enhance the damping properties of epoxy resin composite materials, and with the weight ratio of CNTs increase, the damping properties of composite materials continuously increasing. The CNT with diameter of 10-20nm is better than that of 30-50nm in improve the damping properties of CNTs/Ep composite materials.