纳米碳材料以其优越的力学性能，高的电热传导特性引起人们极大的关注，首先将纳米碳材料 VGCF加入聚偏二氟乙烯(PVDF)中，然后将其负载到尼龙无纺布上采用共固化工艺制备碳纤维增强环氧树脂基结构阻尼复合材料。通过DMA实验，单悬臂强迫共振实验、电阻率测试、摆锤冲击实验和扫描电子显微镜下的断口形貌观察，测试并分析了复合材料层合板的储能模量和损耗因子的温度谱，共振频率及模态损耗因子、3个方向上电阻率和冲击断裂韧性。分析结果表明，通过在复合材料体系中添加 VGCF可进一步提高层合板的损耗因子和储能模量，同时明显改善复合材料在3个方向上导电性能且不明显降低其冲击断裂韧性。
Nanocarbon materials have aroused great attention due to their unique extraordinary physical proper-ties and electrical and thermal properties.Composites combining nanocarbon materials and resins together ex-hibit excellent mechanical properties and high viscoelastic damping as a result of more interfaces introduced into composites.The paper was mainly studying the effect of nano-material VGCF on the properties of structural damping composites prepared by the co-cured method with polyamide nonwoven fabric (PNF)coated with poly-vinylidene fluoride (PVDF).The effects of VGCF on dynamic mechanical and damping properties of this com-posites were estimated through dynamic mechanical temperature spectra measured by DMA.In addition,the loss factor under different frequency,the conductive resistance in 3 directions and the impact toughness were studied through forced resonance experiment,electrical resistivity tests,pendulum impact experiments and ob-servation of the microstructure with SEM.Results indicated that the damping and storage modulus could be im-proved by loading PVDF with VGCF on the nonwoven fabric with improvement of conductivity in 3 directions except impact toughness.
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