High-energy-storage-density polyarylene ether nitrile-based composite material and preparation method and application thereof
A high energy storage density, polyarylether nitrile technology, applied in the direction of fixed capacitor dielectric, fixed capacitor parts, etc., can solve the problems of high density, low loss and high dielectric constant of barium titanate
Inactive Publication Date: 2021-05-11
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology
However, the density of barium titanate itself is relatively large (6.017g / cm 3 ), the breakdown strength is small (25kV / mm), and it is not easy to form and process, so it is difficult to meet the comprehensive requirements of thin thickness, light weight, high dielectric constant and low loss of dielectric materials at the same time
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[0039] The specific technical solutions of the present invention are described in conjunction with the examples.
[0040] In this example, 4 kinds of barium titanate (BT: 100nm, 300nm, 500nm, and 2μm) with different particle sizes were selected to be compounded with polyarylether nitrile, and the 300nm filler was selected for further research. Therefore, the preferred 300nm filler is compounded with polyarylether nitrile, and the filler content is changed to prepare BT / PEN composite materials with filler content of 10wt%, 20wt%, 25wt%, 30wt%, 35wt% and 40wt%. The 30wt% composite material was optimized to further study its main dielectric properties such as dielectric constant, dielectric loss, dielectric strength, energy storage density, and charge-discharge efficiency.
[0041] Preparation of modified BT particles, i.e. core-shell polydopamine-coated nanoparticles:
[0042] (1) Take 3g of barium titanate of different particle sizes (BT: 100nm, 300nm, 500nm, and 2μm) and 0.3g...
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Abstract
The invention provides a high-energy-storage-density polyarylene ether nitrile-based composite material and a preparation method and application thereof. The preparation method comprises the steps that firstly, polydopamine is adopted to conduct organic modification on the surface of barium titanate, so that the surface of BT is provided with a polymer modification layer, then BT filler with the surface provided with the polydopamine modification layer is added into a polyarylene ether nitrile matrix, and finally the high-dielectric polyarylene ether nitrile base with obviously enhanced dielectric constant is obtained. According to the preparation method, polydopamine is adopted as a surface modifier, and organic modification treatment is performed on the surfaces of barium titanate particles; the material has organic-philic chemical bonds; the agglomeration among barium titanate particles is reduced; the uniform dispersion characteristic of barium titanate in a polymer matrix is improved; the polyarylene ether nitrile is adopted as a polymer matrix material, and the defect that a traditional capacitor polypropylene polymer dielectric medium is low in heat resistance is overcome.
Description
technical field [0001] The invention relates to a polyarylether nitrile-based composite material with high energy storage density, a preparation method and application thereof, and belongs to the technical field of polymer dielectric materials. Background technique [0002] Capacitor is one of the most basic and very important electronic components in the electronics industry. In recent years, the demand for lightweight and high energy storage density capacitors has been increasing in the field of electronic appliances. In order to adapt to the miniaturization and lightweight development of high energy storage density capacitors, the use of organic thin films with high temperature resistance and high energy storage density as dielectric materials represents the development trend of high energy storage density capacitors today. Due to the advancement of electronic science and technology, the demand for developing light weight, miniaturized and integrated capacitors with high...
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IPC IPC(8): C08L71/10C08K9/10C08K3/24C08J5/18H01G4/06H01G4/12
CPCC08J5/18C08J2371/10C08K3/24C08K9/10C08K2201/003C08K2201/011H01G4/06H01G4/12
Inventor 黄旭蒲琳钰曾晶晶刘敬松
Owner SOUTHWEAT UNIV OF SCI & TECH