CN104087792A - Insulating temperature-resisting aluminum-based composite heat dispersing material for light emitting diode (LED) - Google Patents

Abstract

The invention relates to lamp heat dispersing materials and particularly relates to an insulating temperature-resisting aluminum-based composite heat dispersing material for a light emitting diode (LED) and a production method thereof. The heat dispersing material is prepared from following raw materials in parts by weight: 88-90 parts of aluminum, 14-17 parts of aluminum nitride, 10-12 parts of magnesium oxide, 4-6 parts of aluminum oxide, 1-3 parts of potassium carbonate, 2-4 parts of sodium dihydrogen phosphate, 8-10 parts of white carbon black, 5-8 parts of hydroxyl silicone oil, 1-2 parts of nekal, 1-3 parts of polyvinylpyrrolidone and 4-5 parts of additives. The heat dispersing material combines the advantages of aluminum, aluminum nitride, magnesium chloride, white carbon black and additives and has both good heat conduction performance and good insulating performance; all the raw materials are mixed and ground in a water solution of potassium carbonate and sodium dihydrogen phosphate, so that the effect of ball milling among the raw materials is very good, the heat dispersing material is easier to mold, and the sintering time is shortened. The heat dispersing material prepared by the method has a compact structure, good thermal stability and light weight, is durable, and has good heat dispersing performance, thereby effectively protecting LED lamps and greatly prolonging the service life of the LED lamps.

Description

Insulation heatproof aluminum-base composite heat sink material for a kind of LED

Technical field

The present invention relates to light fixture heat sink material, be specifically related to insulation heatproof aluminum-base composite heat sink material and production method thereof for a kind of LED.

Background technology

LED be called as the 4th generation light source, there is the advantages such as energy-saving and environmental protection, safety, less energy-consumption, high brightness, be widely used in daily life, the heat dispersion of LED lamp body itself is most important, directly has influence on work-ing life and the illuminating effect of light fixture.Existing LED heat sink material is to be mainly made up of the metallic substance such as aluminium, copper, there is in actual use the shortcomings such as cost restriction, insulating property be inadequate, therefore the formula of necessary improvement material, make material reach more good radiating effect, the use properties of improving light fixture, increases the service life.

Summary of the invention

The object of the invention is to, a kind of LED insulation heatproof aluminum-base composite heat sink material is provided, to improve the use properties of material, reach the object of protection LED light fixture, to achieve these goals, the technical solution used in the present invention is as follows:

Insulation heatproof aluminum-base composite heat sink material for a kind of LED, it is characterized in that, material of the present invention is made up of the raw material of following weight part: aluminium 88-90, aluminium nitride 14-17, magnesium oxide 10-12, aluminum oxide 4-6, salt of wormwood 1-3, SODIUM PHOSPHATE, MONOBASIC 2-4, white carbon black 8-10, hydroxy silicon oil 5-8, pull open powder 1-2, polyvinylpyrrolidone 1-3, auxiliary agent 4-5.

Described auxiliary agent is made up of the raw material of following weight part: polyaluminium sulfate 4-5, animal bone 8-10, sodium sand 1-3, polyimide 4-5, silver-coated copper powder 8-10, magnesium oxide 12-14, Magnesium Carbonate Light 41-45 5-8, preparation method is: first that animal bone is cooling for subsequent use after 800-900 DEG C of temperature lower calcination 10-12h, again polyaluminium sulfate is dissolved in and in suitable quantity of water, is mixed with the aqueous solution that concentration is 4-6%, and the animal bone after calcining and other remaining component are dropped in solution, concentrate drying after mix and blend dispersion 2-3h, grind to form 300-400 order fine powder, to obtain final product.

Insulation heatproof aluminum-base composite heat sink material for described a kind of LED, its manufacture craft comprises following steps:

(1) first salt of wormwood, SODIUM PHOSPHATE, MONOBASIC are dropped into 10 times in the water of its weight part, be stirred to after dissolving completely, add and pull open powder, polyvinylpyrrolidone, dispersed with stirring 30-40min, add again subsequently other remaining component, after mix and blend 1-2h, drop into ball-milling processing in ball mill, make 10000-hole sieve surplus≤0.05% of gained material;

(2) material of step (1) gained is dry at 80-100 DEG C, keep water ratio≤0.02% of material, to after powder grinding distribution 40-50min, send into compression moulding in mould subsequently, under nitrogen atmosphere with after the temperature sintering 4-6h of 650-700 DEG C, through naturally cooling to room temperature and get final product.

The invention has the advantages that: the advantage that combines the compositions such as aluminium, aluminium nitride, magnesium chloride, white carbon black, auxiliary agent compared with conventional aluminum heat exchanging material on raw material; have good heat conduction and insulating property concurrently; and by all raw materials mixed grinding in the aqueous solution of salt of wormwood, SODIUM PHOSPHATE, MONOBASIC; make stock yard ball milling more abundant; more easy-formation; shorten sintering time; the heat sink material compact structure that the present invention prepares; Heat stability is good; quality is light; durable in use, good heat-sinking capability can effectively be protected LED light fixture, greatly extends the work-ing life of light fixture.

Embodiment

Embodiment

The present embodiment LED heat sink material is made up of following weight part raw material: aluminium 88, aluminium nitride 17, magnesium oxide 10, aluminum oxide 6, salt of wormwood 3, SODIUM PHOSPHATE, MONOBASIC 4, white carbon black 10, hydroxy silicon oil 8, pull open powder 2, polyvinylpyrrolidone 2, auxiliary agent 5.

Described auxiliary agent is made up of the raw material of following weight part: polyaluminium sulfate 5, animal bone 10, sodium sand 3, polyimide 5, silver-coated copper powder 10, magnesium oxide 14, Magnesium Carbonate Light 41-45 5, preparation method is: first that animal bone is cooling for subsequent use after 800-900 DEG C of temperature lower calcination 12h, again polyaluminium sulfate is dissolved in in suitable quantity of water, to be mixed with concentration be 6% the aqueous solution, and the animal bone after calcining and other remaining component are dropped in solution, concentrate drying after mix and blend dispersion 3h, grind to form 400 order fine powders, to obtain final product.

Insulation heatproof aluminum-base composite heat sink material for described a kind of LED, its manufacture craft comprises following steps:

(1) first salt of wormwood, SODIUM PHOSPHATE, MONOBASIC are dropped into 10 times in the water of its weight part, be stirred to after dissolving completely, add and pull open powder, polyvinylpyrrolidone, dispersed with stirring 40min, add again subsequently other remaining component, after mix and blend 2h, drop into ball-milling processing in ball mill, make 10000-hole sieve surplus≤0.05% of gained material;

(2) material of step (1) gained is dry at 80-100 DEG C, keep water ratio≤0.02% of material, to after powder grinding distribution 50min, send into compression moulding in mould subsequently, under nitrogen atmosphere with after the temperature sintering 6h of 650-700 DEG C, through naturally cooling to room temperature and get final product.

The more conventional LED of the prepared heat sink material of the present embodiment reduces by 10.8% by the density of the more conventional aluminium base heat sink material of heat sink material, thermal conductivity improves 30.1%, thermal diffusivity improves 32.4%, heat balance time shorten in average 168min, and light fixture improves 31.5% work-ing life.

Claims (2)

1. an insulation heatproof aluminum-base composite heat sink material for LED, it is characterized in that, this heat radiation is made up of the raw material of following weight part: aluminium 88-90, aluminium nitride 14-17, magnesium oxide 10-12, aluminum oxide 4-6, salt of wormwood 1-3, SODIUM PHOSPHATE, MONOBASIC 2-4, white carbon black 8-10, hydroxy silicon oil 5-8, pull open powder 1-2, polyvinylpyrrolidone 1-3, auxiliary agent 4-5;

Described auxiliary agent is made up of the raw material of following weight part: polyaluminium sulfate 4-5, animal bone 8-10, sodium sand 1-3, polyimide 4-5, silver-coated copper powder 8-10, magnesium oxide 12-14, Magnesium Carbonate Light 41-45 5-8, preparation method is: first that animal bone is cooling for subsequent use after 800-900 DEG C of temperature lower calcination 10-12h, again polyaluminium sulfate is dissolved in and in suitable quantity of water, is mixed with the aqueous solution that concentration is 4-6%, and the animal bone after calcining and other remaining component are dropped in solution, concentrate drying after mix and blend dispersion 2-3h, grind to form 300-400 order fine powder, to obtain final product.

2. insulation heatproof aluminum-base composite heat sink material for a kind of LED as claimed in claim 1, its production method is as follows:

(1) first salt of wormwood, SODIUM PHOSPHATE, MONOBASIC are dropped into 10 times in the water of its weight part, be stirred to after dissolving completely, add and pull open powder, polyvinylpyrrolidone, dispersed with stirring 30-40min, add again subsequently other remaining component, after mix and blend 1-2h, drop into ball-milling processing in ball mill, make 10000-hole sieve surplus≤0.05% of gained material;

(2) material of step (1) gained is dry at 80-100 DEG C, keep water ratio≤0.02% of material, to after powder grinding distribution 40-50min, send into compression moulding in mould subsequently, under nitrogen atmosphere with after the temperature sintering 4-6h of 650-700 DEG C, through naturally cooling to room temperature and get final product.