期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 5, 期 31, 页码 7759-7767出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7tc00978j
关键词
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资金
- National Natural Science Foundation of China [51503019, 51373026, 51573020]
- Beijing Natural Science Foundation [2162014]
- Beijing Science and Technology Project of Beijing Municipal Education Commission [KM201710017005]
- Youth Backbone Personal Project of Beijing [2014000020124G085]
- Innovation Promotion Project of Beijing Municipal Commission of Education [TJSHG201310017034]
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.
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