1. Key Laboratory of Engineering Dielectric and Applications (Ministry of Education), School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China
2. National key laboratory of science and technology on advanced composites in special environments, Harbin Institute of Technology, Harbin, 150080, P. R. China
3. School of Material Science and Engineering, Tiangong University, Tianjin, 300387, P. R. China