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在复合材料应用中,复合材料的层间剪切性能仍然是一个亟待解决的问题。本研究中,使用五种不同的多壁碳纳米管(MWCNTs)来提高复合材料的层间剪切性能,其中包括两种直径和长度不同的多壁碳纳米管(MWCNTs-A,MWCNTs-B)和一种定向多壁碳纳米管(MWCNTs-C),还有用MWCNTs-A制备而成的薄膜(MWCNTs-D)以及进行过表面处理的MWCNTs-B(MWCNTs-E)。将以上几种多壁碳纳米管加入到玻璃纤维增强复合材料中,并分别测量其层间剪切强度(ILSS)。研究发现,加入MWCNTs-E的复合材料ILSS提高最多,从24.5MPa提高了8.16%达到26.5MPa。另外,本研究中使用扫描电子显微镜(SEM)对MWCNTs在复合材料中的分散情况进行观察,然后结合复合材料的ILSS值来研究MWCNTs在环氧树脂中的分散性产生的影响。
In composite applications, the interlaminar shear properties of composite materials is still an urgent problem to be solved. In this study, five different multi-walled carbon nanotubes (MWCNTs) were used to improve the interlaminar shear properties of the composites, including two kinds of MWCNTs-A, MWCNTs-B ) And one oriented MWCNTs-C, MWCNTs-D (MWCNTs-D) and MWCNTs-B (MWCNTs-E) with MWCNTs-A. The above multi-walled carbon nanotubes were added to the glass fiber reinforced composites, and their interlaminar shear strength (ILSS) was measured. The study found that, adding MWCNTs-E composite ILSS increased the most, from 24.5MPa increased by 8.16% to 26.5MPa. In addition, the MWCNTs dispersed in the composites were observed by scanning electron microscopy (SEM) in this study. The effects of the dispersion of MWCNTs in the epoxy resin were investigated by combining the ILSS values of the composites.