单壁碳纳米管增韧长丝缠绕玻璃纤维/环氧基圆柱复合材料

Zeynep Ay Solak, Osman Kartav, M. Tanoğlu
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摘要

在本研究中,研究了在环氧树脂中加入纳米填料(用乙氧基化醇化学气相沉积生长的SWCNTs非共价功能化)对长丝缠绕玻璃纤维(GF)基圆柱形复合材料(GFCCs)性能的影响。为此,使用机械搅拌和压延(3辊碾磨)技术,将SWCNTs以0.05和0.1%重量% (wt.%)的浓度分散在环氧树脂中。表征了swcnts加入环氧树脂混合物的流变行为,以确定共混物在长丝缠绕工艺中的适用性。结果表明,在给定浓度下添加SWCNTs对树脂的粘度值没有显著影响。此外,还对滴在GF上的SWCNTs /环氧共混物进行了接触角测量,以评估GF在相关浓度的SWCNTs存在下的润湿性行为。最后,研究人员观察到,GF的润湿性行为并未受到SWCNTs存在的合理影响。采用双悬臂梁(DCB)、弯曲和短梁剪切(SBS)试验对参考和swcnts改性的GFCC试件进行了试验,以评估swcnts的存在对GFCC层间断裂韧性和面外性能的影响。在扫描电镜下对DCB和SBS试验后的断口进行了分析,揭示了增韧机理和填料形貌。因此,尽管SWCNTs掺入在gfcc的最外层,但研究发现,由于SWCNTs的存在,弯曲复合材料样品的层间剪切强度(ILSS)值和I型层间断裂韧性值分别提高了22%和216%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhancement of filament wound glass fiber/epoxy-based cylindrical composites by toughening with single-walled carbon nanotubes
In this study, the effect of incorporating nano-sized fillers (noncovalently functionalized with ethoxylated alcohol chemical-vapor-deposition-grown SWCNTs) within an epoxy resin on the performance of filament wound glass fiber (GF)-based cylindrical composites (GFCCs) was investigated. For this purpose, SWCNTs were dispersed with the concentration of 0.05 and 0.1 weight percent (wt.%) within an epoxy resin using mechanical stirring and calendaring (3-roll-milling) techniques. The rheological behavior of the SWCNT incorporated epoxy mixture was characterized to determine the suitability of blends for the filament winding process. It was revealed that the viscosity value of the resin was not significantly affected by the addition of SWCNTs in given concentrations. Moreover, contact angle measurements were also performed on the SWCNT/epoxy blends dropped on the GF for the evaluation of the wettability behavior of the GF in the presence of the SWCNTs in relevant concentrations. Eventually, it was observed that the wettability behavior of GF was not reasonably affected by the presence of the SWCNTs. The double cantilever beam (DCB), flexural, and short beam shear (SBS) tests were performed on the reference and SWCNT-modified GFCC specimens to evaluate the effects of the SWCNT presence on the interlaminar fracture toughness and out-of-plane properties of GFCCs. The fractured surfaces after the DCB and SBS tests were analyzed under the scanning electron microscopy to reveal the toughening mechanisms and the filler morphologies. Consequently, although SWCNT incorporation was on the outermost layer of GFCCs, it was found that the interlaminar shear strength (ILSS) values and Mode I interlaminar fracture toughness values of the curved composite samples were improved up to 22 and 216%, respectively, due to the presence of the SWCNTs.
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