Dielectric properties and thermal conductivity of epoxy resin composite modified by Zn/ZnO/Al2O3 core–shell particles

• Published in: Polymer bulletin (Berlin, Germany) Germany), 2019-08, Vol.76 (8), p.3957-3970
• Main Authors: Wang, Yang, Zhu, Lingjie, Zhou, Jun, Jia, Beibei, Jiang, Yingye, Wang, Junkai, Wang, Menglan, Cheng, Yonghong, Wu, Kai
• Format: Article
• Language: English
• Subjects: Aluminum oxide; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Composite materials; Core-shell particles; Dielectric loss; Dielectric properties; Epoxy matrix composites; Epoxy resins; Heat conductivity; Heat transfer; Morphology; Multilayers; Organic Chemistry; Original Paper; Particulate composites; Physical Chemistry; Physical properties; Polymer Sciences; Polymers; Soft and Granular Matter; Temperature; Thermal conductivity; Zinc oxide
• ISSN: 0170-0839; 1436-2449
• DOI: 10.1007/s00289-018-2581-x

Herein, the effect of multilayer core–shell-structured Zn/ZnO/Al 2 O 3 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/Al 2 O 3 particles were prepared using hydrolysis process. The Zn/ZnO/Al 2 O 3 /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/Al 2 O 3 /epoxy composites increased 178% by adding 12.0 wt% of Zn/ZnO/Al 2 O 3 particles. The dielectric constant of composites increased obviously with the increased content of Zn/ZnO/Al 2 O 3 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.