Preparation method of high performance polymer-based composite dielectric material

A high-performance polymer and dielectric material technology, applied in the field of dielectric material preparation, can solve the problems of low dielectric constant, and achieve the effects of good stability, good high temperature resistance, high dielectric constant and mechanical properties

Inactive Publication Date: 2018-12-14
DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dielectric constant of polymer materials is low (ε<10)
Although some polymers have dielectric constants over 10, they are still very low compared to ceramic materials

Method used

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  • Preparation method of high performance polymer-based composite dielectric material

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Effect test

Embodiment 1

[0024] A method for preparing a high-performance polymer-based composite dielectric material, comprising the following steps:

[0025] (1) Mix nano-barium titanate, silane coupling agent and absolute ethanol, ultrasonically treat for 1 hour at a power of 500W, filter after the treatment, and dry the solid to obtain modified nano-barium titanate; wherein, the nano-barium titanate The dosage ratio of barium titanate, silane coupling agent and absolute ethanol is 1g: 0.01mL: 30mL;

[0026] (2) Dissolve the modified nano-barium titanate in an organic solvent, then add maleic anhydride, stir and mix evenly, react at 40°C for 2 hours, filter after the reaction, and dry the precipitate to obtain maleic anhydride Branch modified nano barium titanate; Wherein, the mass ratio of described modified nano barium titanate, maleic anhydride is 1:0.3;

[0027] (3) Mix the maleic anhydride graft-modified nano-barium titanate prepared above with deionized water, then add an emulsifier, stir an...

Embodiment 2

[0030] A method for preparing a high-performance polymer-based composite dielectric material, comprising the following steps:

[0031] (1) Mix nano-barium titanate, silane coupling agent and absolute ethanol, ultrasonically treat for 3 hours at a power of 1000W, filter after the treatment, and dry the solid to obtain modified nano-barium titanate; wherein, the nano-barium titanate The dosage ratio of barium titanate, silane coupling agent and absolute ethanol is 1g: 0.05mL: 30mL;

[0032] (2) Dissolve the modified nano-barium titanate in an organic solvent, then add maleic anhydride, stir and mix evenly, react at 60°C for 5 hours, filter after the reaction, and dry the precipitate to obtain maleic anhydride Branch modified nano barium titanate; Wherein, the mass ratio of described modified nano barium titanate, maleic anhydride is 1:0.5;

[0033] (3) Mix the above-mentioned maleic anhydride graft-modified nano-barium titanate and deionized water, then add an emulsifier, stir ...

Embodiment 3

[0036] A method for preparing a high-performance polymer-based composite dielectric material, comprising the following steps:

[0037] (1) Mix nano-barium titanate, silane coupling agent and dehydrated alcohol, ultrasonically treat for 1.5h under 600W power, filter after the treatment, and dry the solid to obtain modified nano-barium titanate; wherein, the The dosage ratio of nano barium titanate, silane coupling agent and absolute ethanol is 1g: 0.02mL: 30mL;

[0038] (2) Dissolve the modified nano-barium titanate in an organic solvent, then add maleic anhydride, stir and mix evenly, react at 45°C for 3 hours, filter after the reaction, and dry the precipitate to obtain maleic anhydride Branch modified nano barium titanate; Wherein, the mass ratio of described modified nano barium titanate, maleic anhydride is 1:0.35;

[0039] (3) Mix the above-mentioned maleic anhydride graft-modified nano barium titanate and deionized water, then add an emulsifier, stir and mix evenly, add...

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Abstract

The invention discloses a preparation method of a high performance polymer-based composite dielectric material. The preparation method comprises: modifying the surface of nanometer barium titanate through a silane coupling agent, preparing maleic anhydride grafted modified nano-barium titanate, preparing a polyacrylate/maleic anhydride grafted modified nano-barium titanate material through an in-situ polymerization method, mixing and grinding the polyacrylate/maleic anhydride grafted modified nano-barium titanate material and a polyvinylidene fluoride material, putting the powder into a mold and carrying out molding. The dielectric material has high dielectricity, a low loss and good breakdown strength and mechanical properties.

Description

Technical field: [0001] The invention relates to the field of dielectric material preparation, in particular to a preparation method of a high-performance polymer-based composite dielectric material. Background technique: [0002] Miniaturization, high performance and portability are the development direction of consumer electronics in recent years, and the high integration of components in the circuit provides a solution for this development. However, capacitors, which are important energy storage components, are still difficult to achieve a high degree of integration. The existing technical solution is to increase volume specific capacity, develop miniaturized surface mount components, and achieve the purpose of saving circuit board space and reducing mass. To solve the integration of capacitors, it is necessary to develop new capacitors with good processing performance (matched to the preparation process of integrated circuits and printed circuit boards) and high dielect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08L51/10C08F292/00
CPCC08F292/00C08L27/16C08L2201/08C08L51/10
Inventor 董永梅
Owner DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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