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首页> 外文期刊>SAMPE Journal >Fabrication and Evagyafion of Epoxy Nattocomposites and Carbort/Epoxy Composite Laminates Containing Oxidized Carbon Nanofibers
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Fabrication and Evagyafion of Epoxy Nattocomposites and Carbort/Epoxy Composite Laminates Containing Oxidized Carbon Nanofibers

机译：含氧化碳纳米纤维的环氧纳豆复合材料和Carbort / Epoxy复合层压板的制备与避让

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摘要

Vapor grown carbon nanofibers (VGCF) were dispersed into an epoxy/amine resin at a level of 8 wt% using a high shear, solvent-free process. Six batches of VGCF which differed in the amount of surface oxidation were used in this study, in addition to two control batches of non-oxidized VGCF. The resulting resin mixtures were evaluated for dispersion quality, and then cured under heat and pressure to form solid plaques. Samples were then evaluated for glass transition temperature (TJ, flexure strength, and impact strength. The dispersion quality varied from batch to batch, with batches containing oxidized VGCFs generally containing fewer and smaller agglomerated nanofibers than those containing non-oxidized VGCFs. The Tg values of the nanocomposites were the same or up to 7°C higher than a neat resin sample. Flexure modulus and strength varied from batch to batch, but one batch showed a 237% increase in modulus and 29% increase in flexure strength over neat resin. This same batch also exhibited a 24% increase in Izod impact strength compared to neat resin, although other batches performed more poorly than neat resin. Additional nanofiber/resin mixtures were prepared and used to demonstrate the production of carbon fiber composite laminates using a Resin Film Infusion technique. The impact strength of the carbon fiber laminates containing VGCFs was about 73% higher than those containing no VGCF. However, these results are initial, and fiber volume fraction and void content differences may be partly responsible for variation in impact strength.
机译：使用高剪切，无溶剂工艺，将气相生长的碳纳米纤维（VGCF）以8 wt％的水平分散到环氧/胺树脂中。除了两个对照批次的未氧化VGCF外，本研究中还使用了六批次的表面氧化量不同的VGCF。评价得到的树脂混合物的分散质量，然后在加热和加压下固化以形成固体斑块。然后评估样品的玻璃化转变温度（TJ，挠曲强度和冲击强度）。分散质量随批次而变化，含氧化VGCF的批次通常比不含非氧化VGCF的批次包含更少和更小的团聚纳米纤维。与纯树脂样品相比，纳米复合材料具有相同或高达7°C的弯曲模量和强度随批次的变化而变化，但与纯树脂相比，一个批次的模量和弯曲强度增加了237％，弯曲强度增加了29％。与其他树脂相比，同一批次的伊佐德冲击强度也比纯树脂提高了24％，其他批次的纳米纤维/树脂混合物也被制备并用于证明使用树脂膜生产碳纤维复合材料层压板灌注技术：含VGCF的碳纤维层压板的冲击强度比不含VGCF的碳纤维层压板高约73％。 r，这些结果是初步的，纤维体积分数和空隙率的差异可能部分是冲击强度变化的原因。

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