期刊
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
卷 21, 期 2, 页码 480-487出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TDEI.2013.004166
关键词
Interface; epoxy; BaTiO3 nanoparticles; nanocomposites; processing; coefficient of thermal expansion; energy storage; breakdown strength
资金
- National Science Foundation of China [51107081, 51277117]
- Research Fund for the Doctoral Program of Higher Education [20100073120038, 20120073110031]
- Shanghai Leading Academic Discipline Project [B202]
- Special Fund of the National Priority Basic Research of China [2014CB239503]
- Science and Technology Commission of Shanghai Municipality [11DZ2283000]
- State Key Laboratory of Electrical Insulation and Power Equipment [EIPE13208]
Highly filled dielectric polymer nanocomposites with high dielectric constant nanoparticles (e. g., BaTiO3) have promising application in many fields such as energy storage. The effectiveness of these nanoparticles to increase the dielectric constant and energy density of the resulting nanocomposites has already been demonstrated. However, the role of interface between the nanoparticles and polymer matrix on thermal expansion, energy storage and breakdown strength-the three parameters that are important for practical application of the dielectric polymer nanocomposites, has not been systematically documented. In this contribution, we investigated the effect of six kinds of nanoparticle surface chemistry on the processing, coefficient of thermal expansion, energy storage and breakdown strength of highly filled epoxy/BaTiO3 nanocomposites. It was found that all these aspects, in particular the processability of the nanocomposites, are associated with the nanoparticle surface chemistry. Combining the processability, coefficient of thermal expansion, energy storage and breakdown strength of the nanocomposites, we conclude that the nanoparticles functionalized by silane coupling agents with terminal groups capable of reacting with the epoxy matrix are more suitable for preparing highly filled dielectric polymer nanocomposites.
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