CN104164592A - A light temperature-resistant aluminum-based composite heat dissipation material used for LEDs - Google Patents

Abstract

The invention relates to heat dissipation materials and particularly relates to a light temperature-resistant aluminum-based composite heat dissipation material used for LEDs and a producing method thereof. The heat dissipation material is prepared from following raw materials by weight: 75-80 parts of aluminum, 8-10 parts of magnesium nitride, 1-2 parts of flint clay powder, 2-3 parts of iron oxide red, 3-5 parts of aluminium silicate fibre, 1-2 parts of ceramic fiber, 4-5 parts of molybdenum disulfide, 1-3 parts of alum, 1-3 parts of lithium iron silicate and 4-5 parts of auxiliary agents. The heat dissipation material integrates advantages of the aluminum, the magnesium nitride, the aluminium silicate fibre, the molybdenum disulfide, the lithium iron silicate, and other components, and has good heat conduction and thermal insulation properties. After dipping treatment with a diluted solution of the alum, the flint clay powder, the iron oxide red, and other components are more compatible with other raw materials, and sintering effects and the heat conduction property of the material can be improved. The prepared material has advantages of compact structure, bright and clean surfaces, light weight, good thermal stability, capability of being durable in use, good heat dissipation capability, and capability of effectively protecting LED lamps and largely prolonging the service lifetime of lamps.

Description

Lightweight 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 lightweight 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 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, lightweight heatproof aluminum-base composite heat sink material for a kind of LED is provided, obtain the light material of good heat dispersion, to promote the use properties of LED lamp, to achieve these goals, the technical solution used in the present invention is as follows:

Lightweight heatproof 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 75-80, magnesium nitride 8-10, flint clay powder 1-2, red iron oxide 2-3, aluminum silicate fiber 3-5, ceramic fiber 1-2, molybdenumdisulphide 4-5, alum 1-3, ferrosilicon silicate of lithium 1-3, auxiliary agent 4-5.

Described auxiliary agent is made by the raw material of following weight part: the fluorine carbon emulsion 2-3 of Zinic stearas 1-3, solid content 45%, magnesium salicylate 4-5, Sodium Tetraborate 1-2, inorganic Ge powder 5-8, four acicular type zinc oxide crystal whisker 12-15, preparation method is: first Sodium Tetraborate is dissolved in suitable quantity of water, be prepared into the aqueous solution that concentration is 8-10%, then drop into magnesium salicylate, four acicular type zinc oxide crystal whisker, mixing and ball milling 1-2h, subsequently gained slurry is dried, disperse to be dried after 2-3h with other remaining component mix and blend again, make 300-400 order fine powder, obtain.

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

(1) first by alum and appropriate water mixed dissolution, be prepared into the solution that concentration is 8-10%, and drop into flint clay powder, red iron oxide, aluminum silicate fiber, molybdenumdisulphide, soak cryodrying after 10-12h, gained material is standby;

(2) by after step (1) gained material and other remaining component mix and blend 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, magnesium nitride, aluminum silicate fiber, molybdenumdisulphide, the advantage of the compositions such as ferrosilicon silicate of lithium, have good heat conduction and insulating property concurrently, and utilize the dilute solution immersion treatment flint clay powder of alum, the compositions such as red iron oxide, raw material after processing is more easily compatible with other raw material, improve the sintering effect of material, reach the object that improves material thermal conductivity, the heat sink material compact structure that the present invention prepares, any surface finish, quality is light, Heat stability is good, durable in use, good heat-sinking capability is effectively protected 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, magnesium nitride 10, flint clay powder 2, red iron oxide 3, aluminum silicate fiber 5, ceramic fiber 2, molybdenumdisulphide 5, alum 2, ferrosilicon silicate of lithium 3, auxiliary agent 5.

Described auxiliary agent is made by the raw material of following weight part: the fluorine carbon emulsion 3 of Zinic stearas 3, solid content 45%, magnesium salicylate 5, Sodium Tetraborate 1, inorganic Ge powder 8, four acicular type zinc oxide crystal whisker 15, preparation method is: first Sodium Tetraborate is dissolved in suitable quantity of water, be prepared into concentration and be 8.5% the aqueous solution, then drop into magnesium salicylate, four acicular type zinc oxide crystal whisker, mixing and ball milling 2h, dries gained slurry subsequently, then disperses to be dried after 3h with other remaining component mix and blend, make 400 order fine powders, obtain.

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

(1) first by alum and appropriate water mixed dissolution, be prepared into concentration and be 10% solution, and drop into flint clay powder, red iron oxide, aluminum silicate fiber, molybdenumdisulphide, soak cryodrying after 12h, gained material is standby;

(2) by after step (1) gained material and other remaining component mix and blend 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 6h 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 11.4% by heat sink material density, and thermal conductivity improves 26.4%, and thermal diffusivity improves 27.8%, heat balance time shorten in average 166min, and light fixture improves 30.6% work-ing life.

Claims (2)

1. lightweight heatproof 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 75-80, magnesium nitride 8-10, flint clay powder 1-2, red iron oxide 2-3, aluminum silicate fiber 3-5, ceramic fiber 1-2, molybdenumdisulphide 4-5, alum 1-3, ferrosilicon silicate of lithium 1-3, auxiliary agent 4-5;

Described auxiliary agent is made by the raw material of following weight part: the fluorine carbon emulsion 2-3 of Zinic stearas 1-3, solid content 45%, magnesium salicylate 4-5, Sodium Tetraborate 1-2, inorganic Ge powder 5-8, four acicular type zinc oxide crystal whisker 12-15, preparation method is: first Sodium Tetraborate is dissolved in suitable quantity of water, be prepared into the aqueous solution that concentration is 8-10%, then drop into magnesium salicylate, four acicular type zinc oxide crystal whisker, mixing and ball milling 1-2h, subsequently gained slurry is dried, disperse to be dried after 2-3h with other remaining component mix and blend again, make 300-400 order fine powder, obtain.

2. lightweight 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 by alum and appropriate water mixed dissolution, be prepared into the solution that concentration is 8-10%, and drop into flint clay powder, red iron oxide, aluminum silicate fiber, molybdenumdisulphide, soak cryodrying after 10-12h, gained material is standby;

(2) by after step (1) gained material and other remaining component mix and blend 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.