A method for reducing the thermal resistance of liquid metal heat conducting sheet
A technology of liquid metal and liquid metal alloy, which is applied in the direction of heat exchange materials, chemical instruments and methods, semiconductor devices, etc., can solve the problems of different effects of heat conduction sheets, affecting the application effect, uneven pressure, etc.
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[0045] The preparation method of the liquid metal alloy includes the following steps: weighing the raw material of the liquid metal alloy according to the composition formula, mixing it uniformly and adding it into the crucible; raising the temperature to 250-300°C, keeping it warm for 2-8 hours, and then cooling to At room temperature, the obtained liquid metal alloy is placed in a container protected by an inert atmosphere for later use.
[0046] As a preferred embodiment, the pretreatment process of the liquid metal alloy is: stirring the liquid metal alloy at room temperature for a certain period of time.
[0047] As a preferred embodiment, the stirring speed is 10-100 rpm, and the stirring time is 0.5-2 hours.
[0048] The stirring time can be, for example, 0.5 hour, 0.6 hour, 0.7 hour, 0.8 hour, 0.9 hour, 1 hour, 1.2 hour, 1.3 hour, 1.4 hour, 1.5 hour, 1.6 hour, 1.7 hour, 1.8 hour, 1.9 hour, 2 hours.
[0049] As a preferred embodiment, the stirring speed is 10-100 rpm,...
Embodiment approach
[0055] In a preferred embodiment, the grammage of the glass fiber mesh cloth is 110-200 g / square meter.
[0056] As a preferred embodiment, the method for reducing the thermal resistance of the liquid metal alloy heat conducting sheet includes the following steps:
[0057] (1) Stir the liquid metal alloy at room temperature for 0.5 to 2 hours at a stirring speed of 10-100rpm.;
[0058] (2) Clean the glass fiber mesh cloth with acetone and ethanol successively at the same time;
[0059] (3) Smear the liquid metal alloy pretreated in step (1) on the glass fiber mesh cloth cleaned in step (2).
[0060] Wherein, when applying in step (3), use a cotton swab to wipe the surface of the glass fiber mesh cloth several times, so that the liquid metal alloy is fully in contact with the mesh cloth.
[0061]The applicant unexpectedly found that by applying the liquid metal alloy on the glass fiber mesh cloth with a grammage of 110-200g / square meter and a thickness of 0.01-0.2 mm after pr...
Embodiment 1
[0066] A method for reducing the thermal resistance of a liquid metal heat conducting sheet, comprising the following steps:
[0067] (1) Stir the liquid metal alloy at room temperature for 1 hour, and the stirring speed is 80rpm.;
[0068] (2) Clean the glass fiber mesh cloth with acetone and ethanol successively at the same time;
[0069] (3) Smear the liquid metal alloy pretreated in step (1) on the glass fiber mesh cloth cleaned in step (2).
[0070] The liquid metal alloy is composed of gallium, indium and tin.
[0071] The mass percentage of described gallium, indium, tin is:
[0072] Indium 21%;
[0073] Gallium 60%;
[0074] Tin remaining amount.
[0075] The preparation method of the liquid metal alloy includes the following steps: weighing the raw material of the liquid metal alloy according to the composition formula, mixing it uniformly and adding it into the crucible; raising the temperature to 280°C, keeping it warm for 5 hours, and then cooling to room temp...
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Abstract
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