Improved dielectric, tensile and energy storage properties of surface rubberized BaTiO3/polypropylene nanocomposites

By M. Zheng, Yu-ting Zheng, J. Zha, Y. Yang, Peng Han, Y. Wen, Z. Dang. Nano Energy, 2018

211 citations recorded by the source corpus.

Abstract The low permittivity of the polypropylene (PP) film has become a barrier for the further development of film capacitors with high energy storage density. An advanced strategy of the high-permittivity filler/polymer nanocomposite turns out to be a promising way of solving this problem. In this work, we coated ethylene propylene diene monomer (EPDM) as the shell on the surfaces of BaTiO3 successfully to fabricate core-shell structural nanoparticles. The addition of surface rubberized BaTiO3 into PP matrix promotes the permittivity to about 5.8, while the dielectric loss is barely changed as compared with PP itself. In addition, the elongation at break is as high as 364%, which is over 4 times higher than that of PP. The influences of shell thickness (3 nm, 5 nm and 7 nm) for the nanoparticles and hot-stretching process for the nanocomposite films were also carefully investigated, both of which greatly affected the properties of nanocomposites. Finally, the optimum breakdown strength as high as 370 MV/m is obtained, leading to a maximum energy density of 3.06 J/cm3, which can be attributed to both high breakdown strength and high permittivity of the core-shell structural BaTiO3/PP nanocomposites.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/4db7cceed9262b4882e753af09480846afca7f62

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In Biomedical Engineering

1. Bin Yao
2. Qing Wang
3. He Li
4. Ding Ai
5. Lulu Ren

In Materials Chemistry

1. Bin Yao
2. Qing Wang
3. He Li
4. Ding Ai
5. Lulu Ren

Citations in the corpus

• Ternary polymer nanocomposites with concurrently enhanced dielectric constant and breakdown strength for high‐temperature electrostatic capacitors (2019, background): “To enhance Ue, extensive studies have been carried out to improve K by adding high K ceramic fillers such as barium titanate (BT), barium strontium titanate, and copper titanate calcium into polymer matrices.(27-32) However, the thus-designed polymer composites typically suffer from large reductions”