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Heat-conducting insulating composite material and preparation method thereof

A composite material, heat conduction and insulation technology, applied in the direction of coating, etc., to achieve good thermal conductivity and insulation, reduce waste, and reduce costs

Inactive Publication Date: 2022-03-25
苏州艾乐格新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a thermally conductive and insulating composite material and its preparation method. The preparation method of the present invention simplifies the operation steps, improves the production efficiency, reduces unnecessary waste, and reduces the cost. And it is convenient for customers to use in automatic production; the heat-conducting and insulating composite material prepared by the present invention has small thickness, small thickness tolerance, high surface smoothness, uniform performance and no need for protective film protection. The dry film has excellent performance when the thickness is very thin Excellent thermal conductivity, the thermal conductivity is greater than 1w / mk, the dielectric strength is greater than 4kv / mil, and it can still maintain good thermal conductivity and insulation in high temperature environments, and the product has good stability

Method used

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  • Heat-conducting insulating composite material and preparation method thereof
  • Heat-conducting insulating composite material and preparation method thereof
  • Heat-conducting insulating composite material and preparation method thereof

Examples

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Embodiment 1

[0065] The present embodiment provides a preparation method of a thermally conductive and insulating composite material, which includes the following steps:

[0066] (1) Unwind the polyimide film to the coating head of the coating equipment, and evenly coat the thermally conductive silicone rubber on one side of the insulating film;

[0067] (2) The insulating film coated in step (1) is transported into an oven to be fully baked, and is wound up after leaving the oven.

[0068] Among them, the coating process is blade coating, the blade is a comma blade; the coating speed is 5m / min; the minimum gap between the comma blade and the coating roller of the coating equipment is 0.02mm.

[0069] The preparation raw materials of thermally conductive silicone rubber include A component and B component, and the mass ratio of A component and B component is 1:1. By mass percentage, component A includes 15% vinyl polysiloxane, 80% thermally conductive filler alumina, 100ppm platinum catal...

Embodiment 2

[0074] The present embodiment provides a preparation method of a thermally conductive and insulating composite material, which includes the following steps:

[0075] (1) After the polyimide film is treated with corona and sticky dust, it is unwound to the coating head of the coating equipment, and the thermally conductive silicone rubber is evenly coated on one side of the insulating film;

[0076] (2) The insulating film coated in step (1) is transported into an oven to be fully baked, and is wound up after leaving the oven.

[0077] Among them, the coating process is scraping, and the scraper is a comma scraper; the coating speed is 5m / min; the minimum gap between the comma scraper and the coating roller of the coating equipment is 0.02mm;

[0078] The preparation raw materials of thermally conductive silicone rubber include A component and B component, and the mass ratio of A component and B component is 1:1. By mass percentage, component A includes 15% vinyl polysiloxane,...

Embodiment 3

[0083] The present embodiment provides a preparation method of a thermally conductive and insulating composite material, which includes the following steps:

[0084] (1) After the polyimide film is treated with corona and sticky dust, it is unwound to the coating head of the coating equipment, and the thermally conductive silicone rubber is evenly coated on both sides of the insulating film;

[0085] (2) The insulating film coated in step (1) is transported into an oven to be fully baked, and is wound up after leaving the oven.

[0086] Among them, the coating process is scraping, and the scraper is a comma scraper; the coating speed is 10m / min; the minimum gap between the comma scraper and the coating roller of the coating equipment is 0.05mm;

[0087] The preparation raw materials of thermally conductive silicone rubber include A component and B component, and the mass ratio of A component and B component is 1:1. By mass percentage, component A includes 15% vinyl polysiloxa...

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Abstract

The invention discloses a heat-conducting insulating composite material and a preparation method thereof. The preparation method of the heat-conducting insulating composite material comprises the following steps: 1) uniformly coating one side or two sides of an insulating film with heat-conducting silicone rubber; and 2) baking and rolling the insulating film coated with the heat-conducting silicone rubber in the step 1) to obtain the heat-conducting insulating composite material. According to the preparation method, the operation steps are simplified, the production efficiency is improved, unnecessary waste is reduced, the cost is reduced, and automatic production and use of customers are facilitated; the prepared heat-conducting insulating composite material is small in thickness, small in thickness tolerance, high in surface flatness and uniform in performance, does not need to be protected by a protective film, has excellent heat-conducting property, the heat conductivity coefficient is larger than 1 w / mk, the insulating strength is larger than 4 kv / mil, good heat conductivity and insulativity can still be kept in a high-temperature environment, and the product stability is good.

Description

technical field [0001] The invention relates to the technical field of thermally conductive insulating materials, in particular to a thermally conductive and insulating composite material and a preparation method thereof. Background technique [0002] With the rapid development of the electronics industry, the functions of electronic products have become more powerful, and at the same time they have become lighter and lighter to carry, smaller and smaller in size, and more and more powerful in function. The heat dissipation requirements of electronic components are getting higher and higher. [0003] The existing thermal conductive material based on thermal conductive silicone rubber is realized based on the calendering extrusion process, which is subject to the conditions of the equipment itself and the process requirements of the preparation, the thickness is greater than 100 μm, and the thickness tolerance is about ±30 μm. With the development of new application designs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D183/07C09D183/05C09D7/61C08L79/08C08L67/02
CPCC08J7/0427C09D183/04C09D7/61C08J2379/08C08J2483/07C08J2483/05C08K2003/2227C08J2367/02C08L83/04C08K3/22
Inventor 周园淇张君宝
Owner 苏州艾乐格新材料有限公司
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