In the present work, carbon nanotubes (CNT) reinforced industrial waste fly ash -based polymer nanocomposites are fabricated. Strong interfacial bonding between CNT-fly ash and epoxy was confirmed by SEM technique. Low water absorption of about 0.17% was observed from 20 vol % CNT reinforced nanocomposite sample. However, the water absorption slightly increases with the increase of CNT contents in fly ash-based nanocomposites due to hydrophilic and polar characteristics of CNT. Flexural strength of nanocomposites increases with increase of CNT amount. The enhancement in flexural strength is attributed to the high dispersion of the CNT in epoxy polymer and weakening of Vander Walls forces. Nanocomposites sheets exhibited a high dielectric constant of 38 at 100 Hz. Dielectric constant was drastically decreased from 38 to 10 for 5% CNT filled nanocomposites. Such behavior was attributed to the conducting nature of CNT and creation of space charge distribution in polymer matrix.

在目前的工作中，制备了碳纳米管 (CNT) 增强的工业废物飞灰基聚合物纳米复合材料。SEM 技术证实了 CNT-粉煤灰和环氧树脂之间的强界面结合。从 20 vol% CNT 增强纳米复合材料样品中观察到约 0.17% 的低吸水率。然而，由于碳纳米管的亲水性和极性特性，吸水率随着粉煤灰基纳米复合材料中碳纳米管含量的增加而略有增加。纳米复合材料的弯曲强度随着 CNT 数量的增加而增加。弯曲强度的增强归因于 CNT 在环氧聚合物中的高度分散和范德壁力的减弱。纳米复合材料片在 100 Hz 下表现出 38 的高介电常数。对于 5% CNT 填充的纳米复合材料，介电常数从 38 急剧下降到 10。这种行为归因于 CNT 的导电性质和聚合物基质中空间电荷分布的产生。