CN104073693A - Low-cost dense aluminum based composite radiating material for LED - Google Patents

Abstract

The invention relates to light fitting radiating materials and particularly relates to a low-cost dense aluminum based composite radiating material for LED and a production method thereof. The radiating material is prepared from the following raw materials in parts by weight: 80-82 parts of aluminum, 15-18 parts of aluminum nitride, 1-2 parts of barium carbonate, 6-8 parts of calcite, 10-12 parts of talc, 8-10 parts of dicalcium silicate, 3-5 parts of medical stone, 1-2 parts of manganese sulfide, 3-4 parts of zinc sulfate, 1-3 parts of zinc gluconate and 4-5 parts of auxiliaries. The radiating material provided by the invention integrates the advantages of such components as aluminum, aluminum nitride, talc, auxiliaries and the like and has excellent heat conduction and insulation properties; after soaking treatment by a mixed aqueous solution of zinc sulfate and zinc gluconate, such components as barium carbonate, calcite, talc, medical stone and the like are compatible to metal powder more easily, to perfect the sintering effect; the prepared radiating material is dense in structure, smooth in surface, small in mass, low in cost, durable and capable of effectively protecting LED light fittings and greatly prolonging the service life of the light fittings.

Description

Low-cost fine and close 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 low-cost fine and close 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 mainly to be made by metallic substance such as aluminium, copper, there is in actual use the shortcomings such as cost restriction, insulating property be inadequate, so 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, low-cost fine and close aluminum-base composite heat sink material for a kind of LED is provided, to improve the heat dispersion of material, obtain good use properties, to achieve these goals, the technical solution used in the present invention is as follows:

Low-cost fine and close aluminum-base composite heat sink material for a kind of LED, it is characterized in that, material of the present invention is made by the raw material of following weight part: aluminium 80-82, aluminium nitride 15-18, barium carbonate 1-2, calcite 6-8, talcum 10-12, Dicalcium Phosphate (Feed Grade) 8-10, medical stone 3-5, manganese sulfide 1-2, zinc sulfate 3-4, Zinc Gluconate 1-3, auxiliary agent 4-5.

Described auxiliary agent is made by 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 standby after 800-900 ℃ 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, obtain.

Low-cost fine and close aluminum-base composite heat sink material for described a kind of LED, its manufacture craft comprises following steps:

(1) first zinc sulfate, Zinc Gluconate are dropped into 10 times and dissolve completely in the water of its total weight parts, add subsequently barium carbonate, calcite, talcum, Dicalcium Phosphate (Feed Grade), medical stone in solution, soak after 10-12h, filter, be dried, gained material is standby;

(2) step (1) gained material and other remaining component are mixed together after stirring 1-2h, drop into ball-milling processing in ball mill, make 10000-hole sieve surplus≤0.05% of gained material;

(3) material of step (2) gained is sent into compression moulding in mould, under nitrogen atmosphere with after the temperature sintering 4-6h of 650-700 ℃, through naturally cooling to room temperature and get final product.

The invention has the advantages that: compared with conventional aluminum heat exchanging material, on raw material, combine aluminium, aluminium nitride, talcum, the advantage of the compositions such as auxiliary agent, have good heat conduction and insulating property concurrently, and first utilize zinc sulfate, the mixed aqueous solution immersion treatment barium carbonate of Zinc Gluconate, calcite, talcum, the raw materials such as medical stone, improve the surface property of material, promote the consistency of itself and metal-powder, improve sintering effect, the heat sink material compact structure that the present invention prepares, any surface finish, quality is light, cost is low, durable in use, can effectively protect LED light fixture, greatly extend the work-ing life of light fixture.

Embodiment

Embodiment

The present embodiment LED heat sink material is made by following weight part raw material: aluminium 80, aluminium nitride 18, barium carbonate 2, calcite 8, talcum 10, Dicalcium Phosphate (Feed Grade) 10, medical stone 5, manganese sulfide 1, zinc sulfate 4, Zinc Gluconate 2, auxiliary agent 5.

Described auxiliary agent is made by 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 standby after 800-900 ℃ of temperature lower calcination 12h, again polyaluminium sulfate is dissolved in in suitable quantity of water, to be mixed with concentration be 4.8% 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, obtain.

Low-cost fine and close aluminum-base composite heat sink material for described a kind of LED, its manufacture craft comprises following steps:

(1) first zinc sulfate, Zinc Gluconate are dropped into 10 times and dissolve completely in the water of its total weight parts, add subsequently barium carbonate, calcite, talcum, Dicalcium Phosphate (Feed Grade), medical stone in solution, soak after 12h, filter, be dried, gained material is standby;

(2) step (1) gained material and other remaining component are mixed together after stirring 2h, drop into ball-milling processing in ball mill, make 10000-hole sieve surplus≤0.05% of gained material;

(3) material of step (2) gained is sent into compression moulding in mould, under nitrogen atmosphere with after the temperature sintering 5h of 650-700 ℃, 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 12.5% by the density of the more conventional aluminium base heat sink material of heat sink material, thermal conductivity improves 25.7%, thermal diffusivity improves 28.1%, heat balance time shorten in average 150min, and light fixture improves 27.6% work-ing life.

Claims (2)

1. a low-cost fine and close aluminum-base composite heat sink material for LED, it is characterized in that, this heat radiation is made by the raw material of following weight part: aluminium 80-82, aluminium nitride 15-18, barium carbonate 1-2, calcite 6-8, talcum 10-12, Dicalcium Phosphate (Feed Grade) 8-10, medical stone 3-5, manganese sulfide 1-2, zinc sulfate 3-4, Zinc Gluconate 1-3, auxiliary agent 4-5;

Described auxiliary agent is made by 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 standby after 800-900 ℃ 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, obtain.

2. low-cost fine and close aluminum-base composite heat sink material for a kind of LED as claimed in claim 1, its production method is as follows:

(1) first zinc sulfate, Zinc Gluconate are dropped into 10 times and dissolve completely in the water of its total weight parts, add subsequently barium carbonate, calcite, talcum, Dicalcium Phosphate (Feed Grade), medical stone in solution, soak after 10-12h, filter, be dried, gained material is standby;

(2) step (1) gained material and other remaining component are mixed together after stirring 1-2h, drop into ball-milling processing in ball mill, make 10000-hole sieve surplus≤0.05% of gained material;

(3) material of step (2) gained is sent into compression moulding in mould, under nitrogen atmosphere with after the temperature sintering 4-6h of 650-700 ℃, through naturally cooling to room temperature and get final product.