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A kind of multilayer easily conductive aluminum substrate and preparation method thereof

A technology of aluminum substrate and graphene layer, which is applied in coating, semiconductor devices, metal material coating process, etc., can solve the problems of low efficiency, high initial cost, and low production efficiency of high-power LEDs, and achieve outstanding energy-saving effects , increase the insulation effect, the effect of high yield

Inactive Publication Date: 2017-11-14
李小鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Disadvantages of LED: high initial cost, poor color rendering, low efficiency of high-power LED, constant current drive (requires a dedicated drive circuit)
The use of aluminum substrates has become a common method at present, but it has the problems of low production efficiency, high manufacturing cost, and low heat dissipation efficiency

Method used

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  • A kind of multilayer easily conductive aluminum substrate and preparation method thereof

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Embodiment 1

[0031] A multi-layer easy conductive aluminum substrate, comprising an aluminum substrate layer, a graphene layer, a heat dissipation silica gel layer and a fluorite layer, a graphene layer is arranged on the surface of the aluminum substrate layer, and a heat dissipation silica gel layer is loaded on the upper end of the graphene layer, The upper end of the heat dissipation silica gel layer is respectively provided with a graphene layer and a fluorite layer on the upper end of the graphene layer.

[0032] Wherein, the graphene layer is formed by graphene sol coating.

[0033] Wherein, the preparation method of described graphene sol coating film is as follows:

[0034] (1) Preparation of graphene oxide sol: Grind graphite oxide into a fine powder with a particle size of 1-40 microns, and prepare a suspension with a concentration of 0.5-6 mg / ml with a solvent. After ultrasonic treatment for 10-120 minutes, Remove unstable impurities in the suspension to obtain graphene oxide ...

Embodiment 2

[0039] A method for preparing a multilayer easily conductive aluminum substrate, the steps of which are as follows:

[0040] (1) Degreasing and decontamination: Wash the surface of the aluminum substrate with a neutral detergent to remove surface oil, then wash with absolute ethanol three times, distilled water three times, and dry;

[0041] (2) Bottom graphene coating: Dip and pull the washed aluminum substrate at a pulling speed of 100-600mm / min, dipping speed of 400-600mm / min, dipping time of 1min, interval of 5min, pulling The number of times is 10 times. After the pulling is completed, dry the aluminum substrate at 60-100°C;

[0042] (3) Preparation of thermally conductive silica gel layer: Coat the surface of thermally conductive silica gel with an inorganic adhesive, and adhere it to the surface of the graphene layer;

[0043] (4) Preparation of graphene film layer: evenly spray graphene sol on the surface of thermal silica gel, dry naturally, and dry at 30-60°C;

[0...

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Abstract

The invention relates to the technical field of LED lighting, and particularly relates to a multilayer high-conductivity aluminum substrate and a preparation method thereof. The multilayer high-conductivity aluminum substrate comprises an aluminum substrate layer, a graphene layer, a heat dissipation silica gel layer and a fluorspar layer, wherein the surface of the aluminum substrate layer is provided with the graphene layer, the heat dissipation silica gel layer is loaded on the upper end of the graphene layer, and the upper end of the heat dissipation silica gel layer is respectively provided with the graphene layer and the fluorspar layer on the upper end of the graphene layer. The invention also provides a preparation method of the aluminum substrate. The multilayer high-conductivity aluminum substrate not only has good heat conducting property, but also has good electrical conductivity, low resistance rate and excellent insulating effect, and meets energy-saving effect. The preparation method provided by the invention is simple and easy to operate, has high cost ratio, and is environmentally friendly and pollution-free, and low-cost.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a multilayer conductive aluminum substrate and a preparation method thereof. Background technique [0002] With the continuous development of the industry, breakthroughs in technology, and vigorous promotion of applications, the luminous efficiency of LEDs is also constantly improving, and the price is constantly falling. The emergence of new combined tube cores has also continuously increased the power of a single LED tube (module). Through continuous efforts in research and development by peers, breakthroughs in new optical designs, and development of new lamp types, the situation of single products is expected to be further reversed. The improvement of the control software also makes the use of LED lighting more convenient. These gradual changes all reflect the broad prospects of LED light-emitting diodes in lighting applications. [0003] LED is called the fourth-gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/64H01L33/48H01L33/62H01L33/00C23C18/00
CPCC23C18/00H01L33/0062H01L33/48H01L33/62H01L33/641H01L33/647H01L2933/0033H01L2933/0075
Inventor 缪希希
Owner 李小鹏