CN203968554U - Double-sided adhesive thermal silicone sheet - Google Patents

Abstract

The utility model relates to a two-sided viscidity heat conduction silica gel piece, including first type rete from the type rete first be equipped with a first viscidity sizing material layer from the type rete first viscidity sizing material layer on be equipped with heat conduction silica gel on be equipped with second viscidity sizing material layer on be equipped with the second and leave the type rete. After the heat-conducting silica gel sheet is adopted, the positioning and reworking operation of a client can be facilitated, the tearing of the material is avoided, the operation is facilitated, and the heat-conducting silica gel sheet can be repeatedly used after being taken down from the shell and the heat dissipation sheet; when the radiator or the shell slides relatively in the assembling process, the heat-conducting silica gel sheet cannot generate position deviation; the double-sided back glue of the heat-conducting silica gel sheet can be used for fixing a radiator, and heat sources such as ICs (integrated circuits) are attached to the radiating fin without additionally designing a fixing structure.

Description

Double-sided adhesive thermal silicone sheet

technical field

The utility model relates to the heat conduction technology of electronic components, in particular to a double-sided viscous heat conduction silica gel sheet.

Background technique

Due to the continuous upgrading of electronic products, the design of products is becoming more and more sophisticated and miniaturized, such as notebook computers, lighting, players, mobile phones, TVs, etc., because the space of products becomes smaller, the problem of heat dissipation becomes more and more serious. For such problems, only by developing a variety of high-performance heat-conducting materials can we deal with various complex heat dissipation problems, find ways to quickly dissipate the heat, or quickly transfer it to the outside of the product to ensure the performance and life of the product. The research and development and promotion of heat conduction materials have been able to achieve the purpose of fast heat dissipation. Many industries now require thermally conductive materials with their own viscosity, which is their annual heat source and heat dissipation device. Many ultra-thin electronic thermally conductive silicone sheets cannot be effectively produced.

Contents of the invention

The technical problem to be solved by the utility model is to provide a double-sided viscous heat-conducting silica gel sheet that can conduct heat for ultra-thin electronics.

The technical solution adopted by the utility model to solve the technical problem is: a double-sided viscous heat-conducting silica gel sheet, including a first release film layer, and a first viscous rubber material layer is arranged on the first release film layer , a heat-conducting silica gel is provided on the first viscous rubber layer, a second viscous rubber layer is provided on the heat-conducting silica gel, and a second release type is provided on the second viscous rubber layer film layer.

More specifically, the rubber of the first adhesive rubber layer and the second adhesive rubber layer is liquid silicone of high temperature vulcanized silicone rubber.

Further specifically, the first release film layer and the second release film layer are PE release films with low peeling force.

More specifically, the peeling force between the first release film layer and the second release film layer is 3-10 g/25mm.

The beneficial effects of the utility model are: after adopting the above-mentioned heat-conducting silica gel sheet, it is convenient for customers to locate and operate in heavy industry, to avoid tearing the material itself, to facilitate operation, and to take it off from the casing and heat sink for reuse; When the device or the shell is relatively sliding, the thermally conductive silicone sheet will not shift in position; the thermally conductive silicone sheet can be double-sided adhesive, so that it can be used to fix the heat sink, and stick the heat source such as IC to the heat sink. There is no need to additionally design a fixed structure.

Description of drawings

Fig. 1 is a structural representation of the utility model.

In the figure: 1. The first release film layer; 2. The first viscous rubber layer; 3. Thermal silica gel; 4. The second viscous rubber layer; 5. The second release film layer.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail.

As shown in Figure 1, a double-sided viscous heat-conducting silicone sheet includes a first release film layer 1, on which a first release film layer 1 is provided with a first adhesive rubber layer 2, on the first release film layer 1 A thermally conductive silica gel 3 is provided on a viscous rubber layer 2, a second viscous rubber layer 4 is provided on the thermally conductive silica gel 3, and a second release film is provided on the second viscous rubber layer 4 Layer 5; the rubber of the first adhesive rubber layer 2 and the second adhesive rubber layer 4 is liquid silicone of high-temperature vulcanized silicone rubber, and the liquid silicone includes an organopolysiloxane composition, an inhibitor agent, catalyst and silicone oil; the first release film layer 1 and the second release film layer 5 are PE release films with low peeling force; the first release film layer 1 and the second release film The peel force of layer 5 is 3-10 g/25mm.

The main components of the heat-conducting silica gel provided by the utility model are metal oxide heat-conducting powder and heat-conducting silicone gel. The heat-conducting powder can be aluminum oxide, magnesium oxide, zinc oxide, aluminum nitride, boron nitride, nitrogen The combination of one or more of silicon carbide, silicon carbide, carbon fiber, and graphene has high thermal conductivity; the viscosity of the organopolysiloxane composition at 25°C before curing is in the range of 10 to 1000 Pa.s.

The preparation method of the double-sided viscous heat-conducting silica gel sheet is characterized in that it comprises the following steps:

First, the treated or untreated heat-conducting powder and heat-conducting silicone gel are mixed evenly in vacuum, and after passing through the calendering equipment, the adhesive layer rubber is sprayed on the upper and lower release films, and heat-cured into a sheet in a molding machine.

It should be emphasized that: the above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modification, equivalent change and Modifications still belong to the scope of the technical solution of the utility model.

Claims (3)

1. A double-sided viscous heat-conducting silicone sheet, characterized in that it includes a first release film layer (1), and a first viscous rubber layer (2) is provided on the first release film layer (1) ), a thermally conductive silica gel (3) is provided on the first viscous rubber layer (2), a second viscous rubber layer (4) is provided on the thermally conductive silica gel (3), and the A second release film layer (5) is provided on the second adhesive rubber layer (4). 2. The double-sided viscous thermally conductive silicone sheet according to claim 1, characterized in that, the first release film layer (1) and the second release film layer (5) are PE release films with low peeling force membrane. 3. The double-sided viscous thermally conductive silicone sheet according to claim 2, characterized in that the peeling force between the first release film layer (1) and the second release film layer (5) is 3-10 g /25mm.