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Enhancement of water barrier properties and tribological performance of hybrid glass fiber/epoxy composites with inclusions of carbon and silica nanoparticles

机译:具有碳和二氧化硅纳米粒子夹杂物的杂种玻璃纤维/环氧复合材料的水阻隔性能和摩擦学性能的增强

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摘要

Water barrier properties and tribological performance (hardness and wear behavior) of new hybrid nanocomposites under dry and wet conditions were investigated. The new fabricated hybrid nanocomposite laminates consist of epoxy reinforced with woven and nonwoven tissue glass fibers and two different types of nanoparticles, silica (SiO2) and carbon black nanoparticles (C). These nanoparticles were incorporated into epoxy resin as a single nanoparticle (either SiO2 or C) or combining SiO2 and C nanoparticles simultaneously with different weight fractions. The results showed that addition of carbon nanoparticles with 0.5 and 1 wt% resulted in maximum reduction in water uptake by 28.55% and 21.66%, respectively, as compared with neat glass fiber reinforced epoxy composites. Addition of all studied types and contents of nanoparticles improves hardness in dry and wet conditions over unfilled fiber composites. Under dry conditions, maximum reduction of 47.26% in weight loss was obtained with specimens containing 1 wt% carbon nanoparticles; however, in wet conditions, weight loss was reduced by 17.525% for specimens containing 0.5 wt% carbon nanoparticles as compared with unfilled fiber composites. Diffusion coefficients for different types of the hybrid nanocomposites were computed using Fickian and Langmuir models of diffusion. Copyright (C) 2017 John Wiley & Sons, Ltd.
机译:研究了新型杂化纳米复合材料在干湿条件下的阻水性能和摩擦学性能(硬度和磨损性能)。新制备的混合纳米复合材料层压板由机织和非织造组织玻璃纤维增强的环氧树脂和两种不同类型的纳米颗粒——二氧化硅(SiO2)和炭黑纳米颗粒(C)组成。将这些纳米颗粒作为单个纳米颗粒(SiO2或C)或以不同重量分数同时将SiO2和C纳米颗粒结合到环氧树脂中。结果表明,与纯玻璃纤维增强环氧树脂复合材料相比,添加质量分数为0.5%和1%的碳纳米颗粒后,吸水率分别降低了28.55%和21.66%。与未填充的纤维复合材料相比,添加所有研究类型和含量的纳米颗粒可提高干燥和潮湿条件下的硬度。在干燥条件下,含1 wt%碳纳米颗粒的试样的失重率最大降低47.26%;然而,在潮湿条件下,与未填充的纤维复合材料相比,含有0.5 wt%碳纳米颗粒的试样的重量损失减少了17.525%。使用Fickian和Langmuir扩散模型计算了不同类型杂化纳米复合材料的扩散系数。版权所有(C)2017约翰威利父子有限公司。

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