IMECH-IR  > 先进制造工艺力学重点实验室
Ni/Al2O3/epoxy high-k composites with ultralow nickel content towards high-performance dielectric applications
Wang, Jing; Shi, Zhicheng; Mao, Fan; Wang, Xin; Zhang K(张坤); Shi, Jing; Shi, ZC; Shi, J (reprint author), Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China.
Source PublicationRSC ADVANCES
2016
Volume6Issue:49Pages:43429-43435
ISSN2046-2069
AbstractNickel/alumina/epoxy three-phase composites consisting of nickel particles dispersed in alumina/epoxy composite matrix were prepared using a facile wet impregnation process. The influences of in situ formed alumina particles (i-Al2O3) and epoxy on the dielectric properties of the composites were investigated in detail. For the composites with nickel contents far below the percolation threshold, the main electrical conduction mechanism is hopping conduction, and the main loss comes from polarizations. Therefore, the formation of alumina and epoxy result in higher permittivity but high loss due to the enhanced interfacial polarization. For the composites with nickel contents below but near the percolation threshold, the main electrical conduction mechanism is metal-like conduction and the main loss comes from eddy currents under high frequency electric field. Accordingly, the i-Al2O3 and filled epoxy between nickel particles could bring both high permittivity and low loss. This paper experimentally shows how the characteristics of the interface between different phases influence the dielectric performances of composites. And the impregnation process is an effective strategy to obtain percolative metal/ceramic/polymer three-phase composites with ultralow metal content, high permittivity and low loss.
DOI10.1039/c6ra06157e
Indexed BySCI ; EI
Language英语
WOS IDWOS:000375611100076
WOS KeywordELECTRICAL PERCOLATION-THRESHOLD ; NEGATIVE PERMITTIVITY BEHAVIOR ; ULTRAHIGH-ENERGY DENSITY ; POLYMER NANOCOMPOSITES ; SELECTIVE REDUCTION ; HYBRID FILMS ; CONSTANT ; STORAGE ; PERMEABILITY ; IMPROVEMENT
WOS Research AreaChemistry, Multidisciplinary
Funding OrganizationThis work was supported by the National Natural Science Foundation of China (51402271, 51401028), Foundation for Outstanding Young Scientist in Shandong Province (BS2014CL003), Project Funded by China Postdoctoral Science Foundation (2014M550375, 2015T80748), Qingdao Science and Technology Plan (14-2-4-118-jch), Fundamental Research Funds for the Central Universities (201413001), Projects Funded by Shandong and Qingdao Postdoctoral Science Foundation.
DepartmentMAM表面与界面改性
Classification二类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/71956
Collection先进制造工艺力学重点实验室
Corresponding AuthorShi, ZC; Shi, J (reprint author), Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China.
Recommended Citation
GB/T 7714
Wang, Jing,Shi, Zhicheng,Mao, Fan,et al. Ni/Al2O3/epoxy high-k composites with ultralow nickel content towards high-performance dielectric applications[J]. RSC ADVANCES,2016,6(49):43429-43435.
APA Wang, Jing.,Shi, Zhicheng.,Mao, Fan.,Wang, Xin.,张坤.,...&Shi, J .(2016).Ni/Al2O3/epoxy high-k composites with ultralow nickel content towards high-performance dielectric applications.RSC ADVANCES,6(49),43429-43435.
MLA Wang, Jing,et al."Ni/Al2O3/epoxy high-k composites with ultralow nickel content towards high-performance dielectric applications".RSC ADVANCES 6.49(2016):43429-43435.
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