Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of interface heat conduction sheet and its preparation method, heat dissipation system

A heat conduction sheet and interface technology, applied in the field of interface heat conduction sheet and its preparation, and heat dissipation system, can solve the problem that the interface heat conduction material cannot meet the thermal conductivity at the same time, and achieve easy industrial production and use, reduce contact thermal resistance, and convenient installation Effect

Active Publication Date: 2016-10-05
HUAWEI TECH CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides an interface heat conduction sheet, which overcomes the problem that the interface heat conduction material in the prior art cannot simultaneously meet the requirements of good thermal conductivity and easy industrial installation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of interface heat conduction sheet and its preparation method, heat dissipation system
  • A kind of interface heat conduction sheet and its preparation method, heat dissipation system
  • A kind of interface heat conduction sheet and its preparation method, heat dissipation system

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] In a second aspect, an embodiment of the present invention provides a method for preparing an interface heat conduction sheet, including the following steps:

[0051] The substrate is fixed in the reaction chamber by a clamp, the reaction chamber is heated to 700-1200°C under a protective gas atmosphere, carbon source gas is introduced, and the reaction is kept at a constant temperature for 2-20 minutes; the substrate is a flexible composite Metal film or flexible graphite, the base material has a first surface and a second surface relative to the first surface, the first surface and the second surface of the base material are loaded with a catalyst, and the flexible composite metal film is surface-coated Flexible metal films coated with nickel, silver or gold;

[0052] After the reaction is completed, cool to room temperature under a protective gas atmosphere to obtain a base material with carbon nanomaterials grown on both the first surface and the second surface, tha...

Embodiment 1

[0085] A method for preparing an interface heat conduction sheet, comprising the steps of:

[0086] (1) Pretreatment of flexible composite metal film: Plating metal nickel on the surface of electrolytic copper foil according to the conventional electroplating method (it can be required that the copper foil manufacturer has prepared the corresponding inert coating treatment) to obtain a nickel-plated electrolytic coating with a thickness of 12um. The copper foil is a flexible composite metal film, which is cleaned by deionization and acetone ultrasonically, and then treated with argon plasma for 1 min after drying; nickel nitrate and deionized water are mixed to prepare a 0.02mol / L nickel nitrate solution; the flexible Soak the composite metal film in nickel nitrate solution for 30s, place the soaked flexible composite metal film in a vacuum drying oven at 90°C for 2 hours, then take it out and put it into a quartz boat, in the constant temperature zone of the quartz reaction tu...

Embodiment 2

[0090] A method for preparing an interface heat conduction sheet, comprising the steps of:

[0091] Take flexible graphite, recommended as highly oriented pyrolytic graphite (Panasonic's PGS graphite film) as the base material, the base material has a first surface and a second surface opposite to the first surface. Put Panasonic's PGS graphite film into a tube-type resistance furnace, heat it to a reaction temperature of about 850°C under the protection of argon, and then feed in hydrogen gas with a flow rate of 300 sccm and argon gas with a flow rate of 1000 sccm, and simultaneously add a concentration of 0.025 g / ml The ferrocene-dissolved xylene solution was continuously fed into the reaction chamber, and the flow rate was controlled at 0.4 mL / min. Under the transport of hydrogen and argon, the ferrocene and xylene reach the position of the PGS graphite film, and the Fe atomic clusters generated by the decomposition of ferrocene will be supported on the first surface and th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

An embodiment of the present invention provides an interface thermal conduction sheet, including a base material and carbon nanowires, the base material has a first surface and a second surface opposite to the first surface, the first surface of the base material Both the surface and the second surface are provided with the carbon nanowires, the carbon nanowires are arranged in an array, wherein the substrate includes a flexible composite metal film, or the material of the substrate includes flexible graphite and solder At least one of alloys, the flexible composite metal film is a flexible metal film coated with nickel, silver or gold on the surface, the interface heat conduction material has good thermal conductivity, can be picked up and placed, and is easy to industrialized production and use. The embodiment of the present invention also provides a method for preparing an interface thermally conductive material, which has high yield, low cost and easy control of product quality. The embodiment of the invention also provides a cooling system.

Description

technical field [0001] Embodiments of the present invention relate to an interface heat conduction sheet, a preparation method thereof, and a heat dissipation system. Background technique [0002] The heat generated by heat-generating components such as chips in electronic equipment usually requires heat dissipation devices to diffuse the heat to the outside. From a microscopic point of view, there are many unevennesses in the contact interface between the heating element and the heat dissipation device. It is necessary to use thermal interface materials (Thermal Interface Materials, TIM) to fill the contact interface between the heating element and the heat dissipation device to reduce the contact thermal resistance. With the development of miniaturization, light weight and high density of electronic equipment. [0003] Existing interface thermally conductive materials, such as thermally conductive silicone grease and phase-change thermally conductive materials, usually ha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L23/373
CPCH01L23/373H01L2924/0002H01L23/42H01L2924/00F28D9/0087
Inventor 徐焰赵仁哲李松林
Owner HUAWEI TECH CO LTD