Clean and in-situ synthesis of copper-epoxy nanocomposite as a matrix for dielectric composites with improved dielectric performance

被引：31
作者：
Li, Gang [1 ]
Yu, Shuhui [1 ]
Sun, Rong [1 ]
Lu, Daniel [1 ]
机构：
[1] Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2015年 / 110卷
基金：
中国国家自然科学基金;
关键词：
Nano composites; Polymer-matrix composites (PMCs); Electrical properties; POLYMER COMPOSITES; SILVER NANOPARTICLES; RAFT POLYMERIZATION; CONSTANT; PARTICLES; SIZE; PERMITTIVITY; MONODISPERSE; OXIDATION; BEHAVIOR;
D O I：
10.1016/j.compscitech.2014.12.010
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
A Cu-epoxy nanocomposites has been developed by in-situ formation of metal nanoparticles within the epoxy matrix and utilized as a new matrix to enhance the dielectric properties of composites. By using an in-situ and clean thermal reduction method, monodisperse Cu nanoparticles with size around 100 nm were generated and uniformly dispersed in epoxy matrices. BaTiO3 ceramic particles with high dielectric constant were incorporated into this Cu-epoxy matrix and the dielectric properties of as-prepared BT/Cu-epoxy composites were investigated. The result showed that the Cu-epoxy matrices effectively enhanced the dielectric constant while maintaining the low dielectric loss for the BT/Cu-epoxy composites as compared with the BT/epoxy composite. In addition, compared with the BT/Cu/epoxy nanocomposite obtained by ex-situ (simple blending) techniques, the in-situ BT/Cu-epoxy composites exhibited comparable dielectric constant while much lower dielectric loss. The improved dielectric performance of nanocomposites was attributed to the excellent dispersion of Cu nanoparticles as well as the strong interfacial interaction between Cu nanoparticles and epoxy matrix in the in-situ Cu-epoxy matrices. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：95 / 102
页数：8
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