Glass fiber reinforced epoxy nanocomposites are synthesized with different weight percentages of MgO nanofillers to improve their mechanical and electrical properties, especially for aerospace and high voltage insulation applications. Static contact angle studies have shown that 3 wt% MgO nanofiller added specimen has a higher contact angle, indicating a better surface profile. Marginal increment in real relative permittivity and dielectric loss tangent have been observed with the inclusion of MgO nanofillers. Pulsed Electro Acoustic (PEA) method was adopted for space charge measurement, which has shown hetero-charge accumulation in all the tested specimens. The amount of accumulated space charge density during poling period is lower and its decay rate during depoling is higher in 3 wt% MgO added specimen. Reduction in initial surface potential and increment in its lst decay rate was noticed after incorporation of MgO nanofillers. 3 wt% specimen has reflected a higher surface potential decay rate with reduced trap depth in comparison with other samples. Dynamic Mechanical Analysis (DMA) studies have shown increased storage modulus with a slight reduction in tan δ value after the inclusion of MgO nanofillers. In addition, the glass transition temperature and the activation energy of 3 wt% specimen were found to be higher compared to other specimens.

玻璃纤维增​​强环氧树脂纳米复合材料是用不同重量百分比的氧化镁纳米填料合成的，以改善其机械和电气性能，尤其适用于航空航天和高压绝缘应用。静态接触角研究表明，添加 3 wt% MgO 纳米填料的试样具有更高的接触角，表明具有更好的表面轮廓。在包含 MgO 纳米填料的情况下，已经观察到实际相对介电常数和介电损耗角正切的边际增量。采用脉冲电声（PEA）方法进行空间电荷测量，在所有测试样品中均显示出异质电荷积累。添加 3 wt% MgO 的样品在极化期间积累的空间电荷密度较低，并且在去极化期间其衰减率较高。加入 MgO 纳米填料后，注意到初始表面电位降低和其第一次衰减率增加。与其他样品相比，3 wt% 的样品反映了更高的表面电位衰减率和更低的陷阱深度。动态机械分析 (DMA) 研究表明，加入 MgO 纳米填料后，储能模量增加，tan δ 值略有降低。此外，与其他样品相比，发现 3 wt% 样品的玻璃化转变温度和活化能更高。动态机械分析 (DMA) 研究表明，加入 MgO 纳米填料后，储能模量增加，tan δ 值略有降低。此外，与其他样品相比，发现 3 wt% 样品的玻璃化转变温度和活化能更高。动态机械分析 (DMA) 研究表明，加入 MgO 纳米填料后，储能模量增加，tan δ 值略有降低。此外，与其他样品相比，发现 3 wt% 样品的玻璃化转变温度和活化能更高。