Highly heat-resistant graphite film metal composite and preparation method thereof

A metal composite material and composite material technology, applied in the field of high heat-resistant graphite film metal composite material and its preparation, can solve the problems of being unable to meet the requirements of the use environment, low cost, poor solvent resistance, and low heat resistance. Achieve good electromagnetic shielding properties, good resistance to conventional solvents and high temperature resistance, and excellent thermal conductivity

Inactive Publication Date: 2017-05-17
CHONGQING YUNTIANHUA HIGH END NEW MATERIALS DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

We know that matrix resins such as polyurethane and polyacrylic resins have poor solvent resistance and low heat resistance, and the conductive adhesives commonly used in the market are relatively expensive due to the use of expensive metal powder, which makes it difficult to use conventional resins or conductive adhesives. Graphite film-copper foil composite materials obtained by glue cannot cope with the increasingly stringent environmental requirements and low cost.

Method used

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  • Highly heat-resistant graphite film metal composite and preparation method thereof
  • Highly heat-resistant graphite film metal composite and preparation method thereof
  • Highly heat-resistant graphite film metal composite and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Add 15 parts of self-made thermoplastic polyimide powder to 80 parts of DMF solvent, stir at room temperature until completely dissolved; then add 5 parts of treated ultrafine artificial graphite powder, and stir at 40°C for 2 hours to obtain Thermoplastic polyimide adhesive; apply the obtained thermoplastic polyimide adhesive on the roughened surface of copper foil with an automatic film coating machine, dry it at 140°C for 5min, and then apply it at 160°C Its rubber surface is pressed with the graphite film to obtain the graphite film copper foil composite material, which is recorded as Example 1.

Embodiment 2

[0040] Add 25 parts of self-made thermoplastic polyimide powder to 70 parts of DMF solvent, stir at room temperature until completely dissolved; then add 4.5 parts of treated ultra-fine artificial graphite powder and 0.5 part of aluminum nitride, in Stir at 50°C for 2 hours to obtain a thermoplastic polyimide adhesive; apply the obtained thermoplastic polyimide adhesive to the roughened surface of copper foil with an automatic film coating machine, and dry it at 140°C for 5 minutes , and then at 160° C., press the rubberized surface with the graphite film to obtain the graphite film-copper foil composite material, which is referred to as Example 2.

Embodiment 3

[0042] Add 20 parts of self-made thermoplastic polyimide powder to 75 parts of DMF solvent, stir at room temperature until completely dissolved; then add 3 parts of treated ultrafine artificial graphite powder, 1 part of carbon nanotube and 1 part of Aluminum nitride was added to it, and stirred at 30°C for 3 hours to obtain a thermoplastic polyimide adhesive; the obtained thermoplastic polyimide adhesive was coated on the roughened surface of the copper foil with an automatic film coating machine, and the Drying treatment at 150°C for 4 minutes, and then pressing the glued surface with the graphite film at 170°C to obtain a graphite-film-copper-foil composite material, which is referred to as Example 3.

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Abstract

The invention discloses a highly heat-resistant graphite film metal composite and a preparation method thereof. The highly heat-resistant graphite film metal composite comprises a graphite film layer, a surface-roughened metal layer and a highly heat-resistant thermoplastic resin layer. A single-layer or multi-layer highly heat-resistant graphite film metal composite is obtained by preparing a highly heat-resistant thermoplastic resin adhesive, treating the surface of the metal layer, preparing the composite and other steps. The preparation method provided by the invention is simple and the prepared highly heat-resistant graphite film metal composite has excellent thermal conductivity and excellent heat resistance and solvent resistance, can be electromagnetically shielded, and is suitable for use in electronic and electric equipment with high heat dissipation and high heat resistance requirements.

Description

technical field [0001] The invention relates to a high heat-resistant graphite film-metal composite material and a preparation method thereof. The high-heat-resistant graphite-metal composite film is suitable for the fields of electronic and electrical equipment requiring high thermal conductivity and high heat resistance. Background technique [0002] With the expansion and popularization of the application range of electronic and electrical equipment, the requirements for the performance and structure of electronic and electrical equipment are becoming more and more stringent and complex, such as higher processing speed, smaller volume, lighter weight, higher The power and better heat dissipation performance, etc., especially with the continuous expansion of the new energy vehicle market in recent years, the demand for fast charging and discharging equipment for automobiles continues to increase, and higher requirements are placed on the thermal conductivity and heat dissip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B15/20B32B15/00B32B37/06B32B37/10B32B37/12B32B38/00B32B38/16C09J179/08C09J11/04
CPCB32B9/007B32B9/041B32B15/00B32B15/20B32B37/06B32B37/10B32B37/1284B32B38/0012B32B38/164B32B2038/168B32B2307/212B32B2307/306B32B2457/00C08K3/04C08K3/28C08K7/24C08K2003/282C09J11/04C09J179/08
Inventor 刘佩珍李鑫蔡航行戴曛晔吕新坤
Owner CHONGQING YUNTIANHUA HIGH END NEW MATERIALS DEV CO LTD
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