纳米粘土填充玻璃纤维/环氧聚合物纳米复合材料的弯曲性能

Mohammed Sohail Bakshi, S. Kattimani
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引用次数: 0

摘要

纳米颗粒填充纤维增强聚合物纳米复合材料的弯曲性能对工程应用具有重要意义。将高岭土纳米管(HNTs)有效地掺入环氧树脂中,并用于浸渍单向玻璃纤维(UD)。根据ASTM标准,对纳米复合材料中含有不同负载的HNTs(0、1、2、3 wt. %)的样品进行三点弯曲试验,估计其弯曲性能。采用差示扫描量热法(DSC)对室温和后固化样品进行了测量。研究了HNTs的加入对纳米复合材料玻璃化转变温度(Tg)的影响。结果表明,在1 wt. %的HNTs载荷下,纳米复合材料的抗弯强度和模量达到最大。此外,在这个最佳负载下,Tg有了显著的改善。后固化样品的DSC测量显示,与室温下固化的反样品相比,添加1wt . % HNT时Tg改善10.8%。扫描电子显微镜显示所有样品都有脆性破坏。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Flexural behavior of nanoclay filled glass fiber/epoxy polymer nanocomposites
Flexural behavior of nanoparticle filled fiber reinforced polymer nanocomposite is very significant to the engineering applications. The halloysite nanotubes (HNTs) were effectively incorporated in epoxy resin and used to impregnate the unidirectional (UD) glass fiber. The flexural property was estimated by the three-point bend test as per ASTM standards, for samples containing varied loading of HNTs (0, 1, 2, 3 wt. %) in the nanocomposite. Differential scanning calorimetry (DSC) measurement was carried for room temperature and post cured samples. The effect of the addition of HNTs in shifting the glass transition temperature (Tg) of the nanocomposite was examined. Results show that maximum flexural strength and modulus values are obtained for the loading of 1 wt. % HNTs in the nanocomposite. Additionally, at this optimum loading, the Tg witnessed a notable improvement. DSC measurement of post cured samples revealed a 10.8% improvement in Tg at 1 wt. % HNT addition compared to its counter sample cured at room temperature. Scanning electron microscopy reveals a brittle failure for all the samples.
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