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Double-layer polymer composite material and preparation method thereof

A double-layer polymer and composite material technology, applied in the field of composite materials, can solve the problems of cumbersome preparation process and small breakdown field strength of polymer dielectric films, and achieve the effect of improving breakdown field strength

Pending Publication Date: 2022-05-13
SHENZHEN INST OF ADVANCED ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current various measures to improve the breakdown field strength of polymer dielectric films are small, and the preparation process is cumbersome

Method used

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  • Double-layer polymer composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation process of composite film in the present embodiment is as follows:

[0034] Step 1: Weigh 1 g of polyetherimide (PEI) and place it in 15 ml of N-methylpyrrolidone and heat and stir at 50° C. until the polyetherimide is completely dissolved to prepare a polyetherimide solution. Weigh 0.5vol.% of n-type organic small molecule semiconductor 1,4,5,8-naphthalene tetracarboxylic anhydride (NTCDA), add it to the polyetherimide solution, and stir at room temperature for 10 hours to prepare n-type Precursor slurry. The preparation method of the p-type precursor slurry is the same as that of the n-type, and the p-type small molecule semiconductor rubrene (Rubrene) is selected, weighing 0.5 vol.%.

[0035] Step 2: Take the p-type precursor slurry prepared in step 1 and pass it through a casting machine to cast a film. First, pour the slurry evenly on a clean refractory quartz glass substrate, adjust the height of the scraper, and start the machine to obtain a sing...

Embodiment 2

[0038] The difference from Example 1 is that 1 vol.% of 1,4,5,8-naphthalene tetracarboxylic anhydride (NTCDA) and 0.5 vol.% of rubrene (Rubrene) were weighed. The double-layer polymer dielectric film obtained in this embodiment is recorded as 0.5RU / 1NT.

Embodiment 3

[0040] The difference from Example 1 is that 2 vol.% of 1,4,5,8-naphthalene tetracarboxylic anhydride (NTCDA) and 0.5 vol.% of rubrene were weighed. The double-layer polymer dielectric film obtained in this embodiment is recorded as 0.5RU / 2NT.

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Abstract

The invention discloses a double-layer polymer composite material and a preparation method thereof.The double-layer polymer composite material comprises a first polymer film and a second polymer film, and the first polymer film is prepared by adding an n-type small organic molecule semiconductor into a polymer matrix; and the second polymer film is prepared by adding a p-type small organic molecule semiconductor into a polymer matrix. According to the double-layer structure polymer composite material provided by the invention, the breakdown field strength of the composite material is improved by utilizing a built-in electric field constructed by a double-layer interface and an electron trap effect of an organic small molecule semiconductor, and the breakdown field strength of the double-layer polymer dielectric film is improved by 100MV / m compared with that of an original pure polyetherimide polymer dielectric film.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a double-layer polymer composite material and a preparation method thereof. Background technique [0002] Polymer dielectric film capacitors are widely used in hybrid electric vehicles, fossil fuel drilling, renewable energy generation, power transmission, healthcare equipment, flexible electronics due to their high breakdown field strength and discharge efficiency and low dielectric loss products and electronic weapon systems. At present, many polymer dielectric film capacitors have the problem of low breakdown field strength. In order to solve this problem, researchers have proposed a variety of solutions. Adding various ceramic powders and blending with other polymers can improve the breakdown field strength of polymer dielectric films. However, after the improvement of the above scheme, the breakdown field strength of the composite material is still ...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08K5/1539C08K5/01C08J7/04H01G4/33
CPCC08J7/0427H01G4/33C08J2379/08C08J2479/08C08K5/1539C08K5/01
Inventor 张斌王大伟陈晓明刘捷孙蓉
Owner SHENZHEN INST OF ADVANCED ELECTRONICS MATERIALS
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