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Composite for use as radiation material for plasma display panel, and radiation panel, plasma display panel and television manufactured by using same

A plasma display and heat dissipation material technology, applied to heat exchange materials, televisions, color televisions, etc., can solve the problems affecting the performance of heat uniformity and heat dissipation, the decline of thermal conductivity, and the consumption of graphite sheets, etc., to achieve low cost, The effect of short production cycle and simple process

Inactive Publication Date: 2011-04-13
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This heat dissipation method requires the use of more graphite sheets. Since the preparation of the graphite layer requires high temperature and high manufacturing costs, it is not desired by the manufacturer to consume a large amount of graphite sheets; on the other hand, due to the gap between the graphite layer and the screen The presence of binders reduces the thermal conductivity, thus affecting the performance of heat uniformity and heat dissipation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The graphite powder with a mass percentage of 50% and the aluminum powder with a mass percentage of 50% are firstly weighed, mixed and stirred evenly to form a mixed powder.

[0028] 10% by mass of ethyl cellulose and 90% by mass of terpineol are weighed, mixed and evenly stirred to form an organic vehicle.

[0029] Weighing 60% by mass of organic vehicle and 40% by mass of mixed powder, mixed and stirred evenly to form graphite-aluminum slurry.

[0030] A dispersant sodium tripolyphosphate and a defoamer polyoxyethylene polyoxypropylene pentaerythritol ether are added to the slurry, wherein the mass percentage of the dispersant and the defoamer is 2%, and the mass percentage of the slurry is 98%.

[0031] Roll again with a three-roll mill to make the average particle size of the slurry particles 25 microns.

[0032] The slurry is coated on the aluminum backplane by spraying with a spray gun, sintered (120° C.), and cooled to obtain a heat dissipation coating.

Embodiment 2

[0034] The graphite powder with a mass percentage of 70% and the tin powder with a mass percentage of 30% are firstly weighed, mixed and stirred evenly to form a mixed powder.

[0035] Weighing 30% by mass of nitrocellulose and 70% by mass of benzyl alcohol, mixing them and stirring evenly to form an organic carrier.

[0036] Weighing 50% by mass of organic vehicle and 50% by mass of mixed powder, mixed and stirred evenly to form graphite-aluminum slurry.

[0037] Add dispersant sodium lauryl sulfate and defoamer polyoxyethylene polyoxypropanolamine ether to the slurry, wherein the mass percentage of dispersant and defoamer is 0.5%, and the mass percentage of slurry is 99.5%

[0038] Roll again with a three-roll mill to make the average particle size of the slurry particles 25 microns.

[0039] The slurry is coated on the aluminum back plate by scraping, sintered (400° C.) and cooled to obtain a heat dissipation coating.

Embodiment 3

[0041] The graphite powder with a mass percentage of 90% and the magnesium powder with a mass percentage of 10% are firstly weighed, mixed and stirred evenly to form a mixed powder.

[0042] The hydroxyethyl cellulose with a mass percentage of 4% and the petroleum ether with a mass percentage of 96% were weighed, mixed and evenly stirred to form an organic vehicle.

[0043]Weigh 40% of the organic vehicle by mass and 60% of the mixed powder by mass, mix and stir evenly to form graphite-aluminum slurry.

[0044] A dispersant methyl amyl alcohol and a defoamer polyoxypropylene glyceryl ether are added to the slurry, wherein the mass percentage of the dispersant and the defoamer is 1%, and the mass percentage of the slurry is 99%.

[0045] Roll again with a three-roll rolling machine, so that the average particle size of the slurry particles is 20 microns.

[0046] The slurry is coated on the aluminum back plate by manual brushing, sintered (250° C.) and cooled to obtain an alum...

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Abstract

The invention provides a composite for use as a radiation material for a plasma display panel, which mainly comprises 40 to 90 mass percent of inorganic powder part A and 10 to 60 percent of organic carrier part B, wherein the part A consists of 50 to 98 mass percent of graphite powder and 2 to 50 mass percent of low-melting-point metal powder; and the part B consists of 70 to 96 mass percent of diluents and 4 to 30 percent of adhesive. The invention also relates to a radiation panel for the plasma display panel, which is made from the composite. The composite and the radiation panel made from the composite provided by the invention have the advantages that: the cost is low; the raw materials are readily available; the process is simple; the production period is short; and the obtained radiation coating has a high conductivity and high bonding force.

Description

technical field [0001] The invention relates to the field of plasma display devices, in particular to a plasma display heat dissipation material composition, a heat dissipation plate prepared using the same, a plasma display and a television. Background technique [0002] The plasma display screen is sealed together by two sheets of glass, and the middle of the glass is divided into many discharge units. Different discharge cells can be urged to discharge and emit light by applying voltage to the electrodes at both ends of the discharge cells. Thus different images are displayed on the screen. [0003] The luminescence of the discharge cell is due to the fact that the high voltage at both ends of the discharge cell excites the inert gas in the discharge cell to become plasma, thereby promoting the phosphor to emit light. The process of exciting the noble gas into a plasma will generate a lot of heat, which will be transferred to the plasma screen composed of two glasses. ...

Claims

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Application Information

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IPC IPC(8): C09K5/14G09F9/313H04N5/64H01J17/49H01J17/16
Inventor 孙猛
Owner SICHUAN COC DISPLAY DEVICES
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