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Polyamide membrane, preparation method thereof and graphite membrane

A polyamide film, polyamide technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as reducing heat dissipation effect, improve appearance, increase free radicals, facilitate gas escape and solvent Volatile effect

Active Publication Date: 2022-05-20
广东鸿翔瑞材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, graphite film and thermally conductive materials are prone to problems such as thermal interface, which reduces the heat dissipation effect

Method used

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  • Polyamide membrane, preparation method thereof and graphite membrane
  • Polyamide membrane, preparation method thereof and graphite membrane
  • Polyamide membrane, preparation method thereof and graphite membrane

Examples

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Effect test

preparation example Construction

[0021] One embodiment of the present application also provides a method for preparing the above-mentioned polyamide membrane, which includes the following steps:

[0022] dissolving the diamine monomer and the dicarboxylic acid monomer in an organic solvent to obtain a reaction solution;

[0023] Adding 3-picoline and triphenyl phosphite into the reaction solution, stirring and reacting under a nitrogen atmosphere to obtain a mixed solution;

[0024] Pour the mixed solution into methanol for precipitation to obtain a solid polyamide composition;

[0025] Dissolving the polyamide composition solid and catalyst in an organic solvent to obtain a polyamide solution;

[0026] Coating the polyamide solution on a support plate to obtain a polyamide coating film;

[0027] The polyamide film is baked and cured to obtain the polyamide film.

[0028] The polyamide solution includes the polyamide polymer and the organic solvent, and the polyamide polymer is dissolved in the organic sol...

Embodiment 1

[0041] Add diamine ENPSDA (0.1mol, 44.22g), dicarboxylic acid NPDA (0.1mol, 21.62g) and solvent NMP (197.52g) into a 500ml reaction flask, stir for 1 hour to dissolve under nitrogen atmosphere, and then add 3-methanol Base pyridine (1mol, 93.13g) and triphenyl phosphite (0.21mol, 65.16g), heat up to 100-110°C, and stir for 12 hours under a nitrogen atmosphere to obtain a mixed solution. Pour the mixed solution into methanol for precipitation, and then filter to obtain a solid, and then use methanol to purify the solid to obtain a polyamide composition solid.

Embodiment 2

[0043]In the 500ml reaction bottle, add diamine ENPSDA (0.09mol, 39.8g), diamine ODA (0.01mol, 2.00g), dicarboxylic acid NPDA (0.1mol, 21.62g) and solvent NMP (190.26g), in a nitrogen environment Stir for 1 hour to dissolve, then add 3-picoline (1mol, 93.13g) and triphenyl phosphite (0.21mol, 65.16g), raise the temperature to 100-110°C, and stir for 12 hours under a nitrogen atmosphere to obtain a mixed solution . Pour the mixed solution into methanol for precipitation, and then filter to obtain a solid, and then use methanol to purify the solid to obtain a polyamide composition solid.

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Abstract

The present application provides a polyamide membrane comprising a polyamide polymer. The polyamide polymer comprises a reaction product of a diamine monomer and a dicarboxylic acid monomer, and the diamine monomer comprises N, N-bis (4-aminophenyl)-N, N-diphenyl-1, 4-phenylenediamine. The polyamide film provided by the invention can be used for preparing a thick graphite film. The invention also provides a graphite film prepared from the polyamide film and a preparation method of the polyamide film.

Description

technical field [0001] The present application relates to the field of heat dissipation materials, in particular to a polyamide film, a graphite film using the polyamide film and a preparation method of the polyamide film. Background technique [0002] Artificial graphite film has become a commonly used heat dissipation material for electronic products because of its high heat dissipation coefficient and low density. Artificial graphite film is usually made of polyamide film after carbonization, graphitization and calendering. The carbon content of the commonly used polyamide film after graphitization is low, and the thickness will be greatly reduced when rolling, so that the thickness of the prepared graphite film is low. The graphite film needs to be used together with a thermally conductive material as a heat dissipation material for electronic products. However, graphite films and thermally conductive materials are prone to problems such as thermal interfaces, which re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08J5/18C08L79/08C01B32/205
CPCC08G73/1067C08J5/18C01B32/205C08J2379/08Y02E60/10
Inventor 李冠纬苏赐祥
Owner 广东鸿翔瑞材料科技有限公司
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