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采用一种新型简易的化学气相沉积法(CVD)直接在泡沫镍表面均匀地沉积生长碳纳米管(CNTs),然后通过真空导入模塑成型工艺(VIMP)将选定的环氧树脂体系填入表面负载CNTs的泡沫镍孔洞,制备CNTs-泡沫镍/环氧树脂复合材料。利用FE-SEM、TEM和Raman对在不同反应温度条件下泡沫镍表面形貌和所生成CNTs的形貌、结构及石墨化程度进行了表征,并采用动态机械分析仪(DMA)研究了CNTs对泡沫镍/环氧树脂复合材料阻尼性能的影响。结果表明:当反应温度为680℃时,在泡沫镍表面可获得较好的CNTs沉积效果,且所生成的CNTs石墨化程度和纯度较高且直径尺寸较为均匀。同时所制备的CNTs-泡沫镍/环氧树脂复合材料比泡沫镍/环氧树脂复合材料,最大损耗因子tanδ_(max)从0.69提高到0.78,玻璃化转变温度Tg从60℃偏移到68℃,有效阻尼温域ΔT从39℃扩宽到44℃,整体阻尼性能提高了18.9%。
Carbon nanotubes (CNTs) were uniformly deposited directly on the surface of nickel foam by a new simple chemical vapor deposition (CVD) method, and the selected epoxy resin system was filled into a vacuum injection molding process (VIMP) Foam nickel foams with CNTs supported on the surface were prepared CNTs-foamed nickel / epoxy composites. The morphology, structure and graphitization of the foams were characterized by FE-SEM, TEM and Raman at different reaction temperatures. The dynamic mechanical analysis (DMA) Effect of Foam Nickel / Epoxy Resin on Damping Properties. The results show that when the reaction temperature is 680 ℃, better deposition of CNTs can be obtained on the surface of nickel foam, and the graphitization degree and purity of the resulting CNTs are higher and their diameters are more uniform. At the same time, the maximum loss factor tanδ max increased from 0.69 to 0.78 and the glass transition temperature Tg shifted from 60 ℃ to 68 ℃ compared with that of the foam nickel / epoxy composites. , The effective damping temperature range ΔT widened from 39 ℃ to 44 ℃, the overall damping performance increased by 18.9%.