Abstract In this study, the effects of polyaniline (PANI) incorporation (3 wt% of PANI) and graphene nanoplatelets (GNPs) loading (0.1–0.7 wt%) on the mechanical, thermal, and electrical performance of epoxy matrix were investigated. The incorporation of 0.3 wt% GNPs optimally enhanced the bending strength, bending modulus, tensile strength, tensile modulus, and impact strength (90 MPa, 1422 MPa, 63 MPa, 602 MPa, and 8.29 kJm−2, respectively). At 0.3 wt% GNPs, the hybridization effect optimally enhanced the glass transition behaviour of the epoxy nanocomposites. The electrical and thermal conductivities of epoxy were improved upon the inclusion of PANI, and this increase was further augmented when the GNPs content increased to 0.3 wt%. However, higher GNPs contents deteriorated the mechanical performance and electrical and heat conduction. Field emission scanning electron microscopy showed good filler distribution and effective interactions among the GNPs, PANI, and epoxy components with appropriate compositions.

中文翻译：

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通过聚苯胺和石墨烯纳米片增强环氧树脂的导电性和导热性的机械增强

摘要 在本研究中，研究了聚苯胺 (PANI) 掺入（PANI 的 3 wt%）和石墨烯纳米片（GNPs）负载（0.1–0.7 wt%）对环氧树脂基体的机械、热和电性能的影响。0.3 wt% GNP 的掺入最佳地增强了弯曲强度、弯曲模量、拉伸强度、拉伸模量和冲击强度（分别为 90 MPa、1422 MPa、63 MPa、602 MPa 和 8.29 kJm-2）。在 0.3 wt% GNP 时，杂化效应最佳地增强了环氧纳米复合材料的玻璃化转变行为。包含 PANI 后环氧树脂的导电性和导热性得到改善，当 GNP 含量增加到 0.3 wt% 时，这种增加进一步增加。然而，较高的 GNPs 含量会降低机械性能以及电和热传导。