Preparation and Dielectric Properties of Nanocomposites with Double Cross-linking Network Structure

doi:10.7503/cjcu20200740

Abstract

Abstract:

A kind of BaTiO₃/poly（aryl ether ketone） nanocomposite（BT-BCB/c-DPAEK） with double cross-linking network was obtained by controlling the reaction temperature and time according to the difference of activation energy of functional groups. It was found that BT-BCB/c-DPAEK composite film had better mechanical and thermal properties than pure polymer film and the composite films without crosslinking treatment or with single crosslinking treatment. At the same time， due to the improvement of the interface between the two phases of the composite and the limitation of the polymer molecular chain movement at high temperature， BT-BCB/c-DPAEK showed excellent energy storage performance. Especially at 150 ℃ and 300 MV/m， it still maintained an discharge energy density of 1.75 J/cm³ and a discharge efficiency as high as 80%.

Key words: Poly（aryl ether ketone）, Composite, Double cross-linking network, Dielectric property, Energy storage

CLC Number:

O631

TrendMD:

DING Jiale, JIN Lan, CUI Zengduo, ZHANG Haibo, ZHANG Yunhe, JIANG Zhenhua. Preparation and Dielectric Properties of Nanocomposites with Double Cross-linking Network Structure[J]. Chem. J. Chinese Universities, 2021, 42(6): 2015.

Figures/Tables 11

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