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	Fabricating 3D BT-BN/epoxy Composites with High Dielectric Performance
	Xiaodong Zhu; Suibin Luo; Shuhui Yu; Baojin Chu; Rong Sun; Ching-Ping Wong
	2018
会议日期	2018
会议地点	上海
英文摘要	Abstract—Polymer-ceramic composites with high permittivity (εr) have been explored as dielectric materials applied in advanced electric devices. The dielectric loss, which mainly comes from ferroelectric hysteresis and electrical conduction, is usually at an undesired high level. To solve this problem, a new kind of composite system composed of interconnected three dimensional barium titanate and boron nitride (3D BT-BN) scaffold and epoxy was designed and investigated in this study. A significant improvement of the εr and energy storage density (Ud) was achieved. The permittivity is increased from 3.4 for pure epoxy to ~49 at 100 Hz for the composite with filler volume ratio of 21.2 vol%. And, a high breakdown strength (Eb~499.89 kV/cm), high energy density (Ud~190.04×10-3 J/cm3) and charge-discharge efficiency (~70.07 %) are achieved when the composites contain 7.2 vol% of 3D BT-BN. The enhanced energy efficiency was attributed to the high thermal conductivity of the composites. The out-of-plane thermal conductivity of composites was strengthened from 0.8 to 2.3 as the filler loading increased from 7.2 vol% to 21.2 vol%.
内容类型	会议论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/13807]
专题	深圳先进技术研究院_集成所
推荐引用方式 GB/T 7714	Xiaodong Zhu,Suibin Luo,Shuhui Yu,et al. Fabricating 3D BT-BN/epoxy Composites with High Dielectric Performance[C]. 见:. 上海. 2018.

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