Abstract
Herein, the effect of multilayer core–shell-structured Zn/ZnO/Al2O3 particles on thermal conductivity and dielectric properties of epoxy composites was investigated. The core–shell-structured Zn/ZnO particles were obtained by a simple calcination method, and the multilayer core–shell-structured Zn/ZnO/Al2O3 particles were prepared using hydrolysis process. The Zn/ZnO/Al2O3/epoxy composites were fabricated, and atomic force microscopy (AFM) images showed that the fillers were well distributed in epoxy matrix. Thermal conductivity of Zn/ZnO/Al2O3/epoxy composites increased 178% by adding 12.0 wt% of Zn/ZnO/Al2O3 particles. The dielectric constant of composites increased obviously with the increased content of Zn/ZnO/Al2O3 particles, while the dielectric loss is still low. These results illustrate that the combination of the thermal and dielectric properties tuned by multilayer core–shell particles gives potential application in extended domains for epoxy composites.
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