CN104073692A - Thermally conductive and insulating aluminum base compound radiating material for LED - Google Patents

Abstract

The invention relates to a radiating material of a lamp and particularly relates to a thermally conductive and insulating aluminum base compound radiating material for an LED and a production method of the radiating material. The radiating material is prepared from the following raw materials in parts by weight: 70-72 parts of aluminum, 12-15 parts of aluminum nitride, 1-3 parts of fibrolite, 2-3 parts of chlorite, 2-4 parts of sodium castor oil sulfonate, 8-10 parts of polyacrylate, 12-15 parts of kaolin, 10-11 parts of zinc oxide, 1-3 parts of trisodium phosphate, 3-4 parts of rosin powder, 1-2 parts of sodium citrate and 4-5 parts of an auxiliary. The radiating material provided by the invention integrates the advantages of components such as aluminum, aluminum nitride and kaolin and has both good thermal conductive and insulating performances. Soaked by a mixed dilute solution sodium citrate and trisodium phosphate, the radiating material is more easily compatible with metal powder. Components such as polyacrylate, rosin powder and the auxiliary can assist formation, improve the sintering effect of a blank and shorten the sintering time. The radiating material is compact in structure, insulative and safe, high in thermal conductivity coefficient, good in mechanical property and durable, and can effectively protect the LED lamp, so that the service life of the lamp is greatly prolonged.

Description

Heat conductive insulating 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 heat conductive insulating 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, heat conductive insulating aluminum-base composite heat sink material for a kind of LED is provided, to improve heat radiation and the use properties of material, extend the work-ing life of light fixture, to achieve these goals, the technical solution used in the present invention is as follows:

Heat conductive insulating 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 70-72, aluminium nitride 12-15, fibrolite 1-3, chlorite 2-3, Viscotrol C sodium sulfonate 2-4, polyacrylic ester 8-10, kaolin 12-15, zinc oxide 10-11, tertiary sodium phosphate 1-3, colophonium powder 3-4, Trisodium Citrate 1-2, 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.

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

(1) first Trisodium Citrate, tertiary sodium phosphate are dropped into 20 times in the water of its total weight parts, and fibrolite, chlorite, kaolin are added in solution and soaked after 10-12h, filter, be washed to neutral rear being dried, gained material is standby;

(2) step (1) gained material and other leftover materials 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 dry at 80-100 ℃, water ratio≤0.02% that keeps 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 ℃, 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, kaolin, zinc oxide, the advantage of the compositions such as chlorite, have good heat conduction and insulating property concurrently, and utilize Trisodium Citrate to mix dilute solution immersion treatment fibrolite with tertiary sodium phosphate, chlorite, kaolin, to improve its surface property, improve the consistency between itself and metal-powder, polyacrylic ester, colophonium powder, the compositions such as auxiliary agent can assistant formation, improve blank sintering effect, shorten sintering time, reach the object of energy-saving consumption-reducing, the heat sink material compact structure that the present invention prepares, insulation safety, thermal conductivity is high, mechanical property is good, 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 72, aluminium nitride 15, fibrolite 3, chlorite 2, Viscotrol C sodium sulfonate 4, polyacrylic ester 10, kaolin 15, zinc oxide 10, tertiary sodium phosphate 3, colophonium powder 4, Trisodium Citrate 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 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, obtain.

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

(1) first Trisodium Citrate, tertiary sodium phosphate are dropped into 20 times in the water of its total weight parts, and fibrolite, chlorite, kaolin are added in solution and soaked after 12h, filter, be washed to neutral rear being dried, gained material is standby;

(2) step (1) gained material and other leftover materials 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 dry at 80-100 ℃, water ratio≤0.02% that keeps material, to after powder grinding distribution 50min, send into compression moulding in mould subsequently, under nitrogen atmosphere with after the temperature sintering 4h 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 improves 13.6% by the intensity of the more conventional aluminium base heat sink material of heat sink material, thermal conductivity improves 28.2%, thermal diffusivity improves 30.6%, heat balance time shorten in average 162min, and light fixture improves 32.1% work-ing life.

Claims (2)

1. heat conductive insulating aluminum-base composite heat sink material for a LED, it is characterized in that, this heat radiation is made by the raw material of following weight part: aluminium 70-72, aluminium nitride 12-15, fibrolite 1-3, chlorite 2-3, Viscotrol C sodium sulfonate 2-4, polyacrylic ester 8-10, kaolin 12-15, zinc oxide 10-11, tertiary sodium phosphate 1-3, colophonium powder 3-4, Trisodium Citrate 1-2, 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. heat conductive insulating aluminum-base composite heat sink material for a kind of LED as claimed in claim 1, its production method is as follows:

(1) first Trisodium Citrate, tertiary sodium phosphate are dropped into 20 times in the water of its total weight parts, and fibrolite, chlorite, kaolin are added in solution and soaked after 10-12h, filter, be washed to neutral rear being dried, gained material is standby;

(2) step (1) gained material and other leftover materials 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 dry at 80-100 ℃, water ratio≤0.02% that keeps 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 ℃, through naturally cooling to room temperature and get final product.