Controllable dielectric performance of polymer composites via the Coulomb-blockade effect with core-shell structured nano-particles

被引:39
作者
Yang, Dan [1 ,2 ]
Huang, Shuo [2 ,3 ]
Ruan, Mengnan [2 ,3 ]
Wu, Yibo [1 ,2 ]
Li, Shuxin [1 ,2 ]
Wang, Hao [1 ,2 ]
Zhang, Jinyu [1 ]
Ma, Haonan [1 ]
Guo, Wenli [1 ,2 ]
Zhang, Liqun [3 ]
机构
[1] Beijing Inst Petrochem Technol, Dept Mat Sci & Engn, Beijing 102617, Peoples R China
[2] Beijing Key Lab Special Elastomer Composite Mat, Beijing 102617, Peoples R China
[3] Beijing Univ Chem Technol, Dept Mat Sci & Engn, Beijing 100029, Peoples R China
基金
中国国家自然科学基金; 北京市自然科学基金;
关键词
HIGH-ENERGY DENSITY; HIGH PERMITTIVITY; BARIUM-TITANATE; POLY(DOPAMINE) FUNCTIONALIZATION; BREAKDOWN STRENGTH; TIO2; NANOPARTICLES; BIOMIMETIC METHOD; NANOCOMPOSITES; RUBBER; FILMS;
D O I
10.1039/c7tc00978j
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Designed core-shell structured titanium dioxide-poly(dopamine)-silver (TiO2-PDA-Ag) particles were prepared via self-polymerization of poly(dopamine) and electroless plating of nano-silver particles. The poly(dopamine) layer was used not only to improve the interfacial interaction between TiO2 and the nitrile-butadiene rubber (NBR) matrix but also as chemisorption sites for silver ions. Then the TiO2-PDA-Ag particles were introduced into the NBR matrix to prepare dielectric composites. The effect of the nano-Ag content on morphology, dielectric properties, and electrical properties of the composites was thoroughly investigated. It was found that the Coulomb-blockade effect of nano-Ag particles led to the composites with relatively low dielectric loss and relatively high electrical breakdown strength. This simple and effective approach provides a promising route to adjust the dielectric properties of dielectric composites via the Coulomb-blockade effect.
引用
收藏
页码:7759 / 7767
页数:9
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