▎ 摘　　要

The effects of ZnO and hollow graphene-oxide (HGO) nanoparticles were studied with respect to thermal conductivity of unsaturated polyester resin (PEST). To this end, simple- and complex-structure nanocomposites were prepared by mixing, lay-up and turning methods and they were subjected to a thermal conduction test. The simple-structure of the nanocomposites consisted of PEST bulk, with a specific volume, including ZnO and/or HGO nanoparticles while the complex-structure samples were made of series or parallel PEST layer, each containing a specific nanoparticle type. To evaluate the interlayer thermal resistance in the complex-structure samples, an analytical model was proposed and its results were coupled with those of the simulated thermal conduction test (using ABAQUS). The effect of the hollow structure of HGO nanoparticles on their unique thermal properties was also evaluated through simulation procedure, under specific conditions, and compared with layer graphene oxide nanoparticles. The obtained results revealed that the three-layer series arrangement of PEST/ ZnO-PEST/HGO-PEST/ZnO had the best thermal conductivity among all prepared samples. Also, using Newton's law of cooling, it was proved that the HGO nanoparticles could act as thermal capacitors in polymer matrices which had a significant impact on their capability to enhance the thermal conductivity of the nanocomposite systems even at very low content.