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首页> 外文期刊>Materials Science and Engineering >The tensile and thermal properties of modified CNT-reinforced basalt/epoxy composites
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The tensile and thermal properties of modified CNT-reinforced basalt/epoxy composites

机译：改性CNT增强玄武岩/环氧树脂复合材料的拉伸和热性能。

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摘要

In this study, the effect of carbon nanotube (CNT) modification on the tensile and thermal properties of CNT/basalt/epoxy composites was investigated. CNT/basalt/epoxy composites were fabricated by impregnating woven basalt fibers into epoxy resin mixed with CNTs. Three groups of composites were fabricated, consisting of unmodified, acid-modified (oxidized), and silane-modified (silanized) CNTs, each at 1 wt.%. Tensile tests and dynamic mechanical analysis (DMA) were performed on each group of composites to determine the mechanical and thermal properties of the CNT/basalt/epoxy composites, depending on the surface modification of CNTs. The tensile strength and Young's modulus of silanized CNT/basalt/epoxy composites were 34 and 60% greater, respectively, than that of unmodified CNT/basalt/epoxy composites. Also the silanized composites had a higher storage modulus and T_g than unmodified and oxidized composites. The enhancement of the mechanical and thermal properties of silanized CNT/basalt/epoxy composites is attributed to improved dispersibility and strong interfacial interaction between the silane functionalized CNTs and the epoxy in the basalt fabric/epoxy composites.
机译：在这项研究中，研究了碳纳米管（CNT）改性对CNT /玄武岩/环氧树脂复合材料的拉伸和热性能的影响。 CNT /玄武岩/环氧树脂复合材料是通过将编织的玄武岩纤维浸渍到与CNT混合的环氧树脂中制成的。制备了三组复合材料，分别由未改性的，酸改性的（氧化的）和硅烷改性的（硅烷化的）CNT组成，每一种含量为1 wt。％。对每组复合材料进行拉伸测试和动态力学分析（DMA），以确定CNT /玄武岩/环氧复合材料的机械和热性能，具体取决于CNT的表面改性。硅烷化的CNT /玄武岩/环氧树脂复合材料的抗张强度和杨氏模量分别比未改性的CNT /玄武岩/环氧树脂复合材料高34和60％。而且，硅烷化的复合材料比未改性和氧化的复合材料具有更高的储能模量和T_g。硅烷化的CNT /玄武岩/环氧树脂复合材料的机械性能和热性能的提高归因于硅烷官能化的CNT与玄武岩织物/环氧树脂复合材料中的环氧树脂之间的分散性提高和强界面相互作用。

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