CN104152752B - A kind of efficient aluminium base composite heat dissipation material of low bulk for LED - Google Patents

Abstract

The present invention relates to light fixture heat sink material, be specifically related to the efficient aluminium base composite heat dissipation material of a kind of LED low bulk and production method thereof, this heat sink material is made up of the raw material of following weight portion: aluminium 72-75, zirconium silicate 10-12, strontium oxide strontia 1-2, zinc oxide 4-5, boron carbide 6-9, calcium silicates 2-3, expanded vermiculite powder 10-12, aluminium hydroxide 4-6, magnesium hydroxide 3-6, diatomite 8-10, auxiliary agent 4-5; Heat sink material of the present invention combines the advantage of the compositions such as aluminium, zirconium silicate, boron carbide, expanded vermiculite powder, diatomite, has good heat conduction and insulating properties concurrently, the material structure densification that sintering obtains; any surface finish; firm wear-resisting, heatproof changes, and is difficult for imbibition cracking; thermal coefficient of expansion is little; safety durable, good heat-sinking capability can be protected LED light fixture for a long time efficiently, prevents the harm of high temperature to chip; improve the service life of light fixture, obtained gratifying serviceability.

Description

A kind of efficient aluminium base composite heat dissipation material of low bulk for LED

Technical field

The present invention relates to light fixture heat sink material, be specifically related to the efficient aluminium base composite heat dissipation material of a kind of LED low bulk and production method thereof.

Background technology

LED be called as the 4th generation light source, there is the advantages such as energy-saving and environmental protection, safety, low 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 service life and the illuminating effect of light fixture. Existing LED heat sink material is to be mainly made up of the metal material such as aluminium, copper, there is in actual use the shortcomings such as cost restriction, insulating properties be inadequate, therefore the formula of necessary improvement material, make material reach more good radiating effect, the serviceability of improving light fixture, increases the service life.

Summary of the invention

The object of the invention is to, provide a kind of LED low bulk efficient aluminium base composite heat dissipation material, improve heat radiation and the temperature capacity of material, extend the service life of light fixture, to achieve these goals, the technical solution used in the present invention is as follows:

A kind of efficient aluminium base composite heat dissipation material of low bulk for LED, it is characterized in that, material of the present invention is made up of the raw material of following weight portion: aluminium 72-75, zirconium silicate 10-12, strontium oxide strontia 1-2, zinc oxide 4-5, boron carbide 6-9, calcium silicates 2-3, expanded vermiculite powder 10-12, aluminium hydroxide 4-6, magnesium hydroxide 3-6, diatomite 8-10, auxiliary agent 4-5.

Described auxiliary agent is made up of the raw material of following weight portion: fluorine carbon emulsion 2-3, the magnesium salicylate 4-5 of zinc stearate 1-3, solid content 45%, Boratex 1-2, inorganic Ge powder 5-8, four acicular type zinc oxide crystal whisker 12-15, preparation method is: first Boratex 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 residual components mix and blend again, make 300-400 order fine powder, to obtain final product.

The efficient aluminium base composite heat dissipation material of low bulk for described a kind of LED, its manufacture craft comprises following steps:

(1) all the components is mixed together after dispersed with stirring 1-2h, drops into ball-milling treatment in ball mill, make 10000-hole sieve surplus≤0.05% of gained material;

(2) material of step (1) gained is sent in mould compressing, under nitrogen atmosphere, to naturally cool to room temperature after the temperature sintering 4-6h of 650-700 DEG C, to be obtained final product.

The invention has the advantages that: the advantage that combines the compositions such as aluminium, zirconium silicate, boron carbide, expanded vermiculite powder, diatomite compared with conventional aluminum heat exchanging material on raw material; have good heat conduction and insulating properties concurrently; the material structure densification that sintering obtains; any surface finish; firm wear-resisting; heatproof changes; be difficult for imbibition cracking; thermal coefficient of expansion is little, and safety durable has good heat-sinking capability simultaneously; can protect efficiently for a long time LED light fixture; prevent the harm of high temperature to chip, in the service life of having improved light fixture, obtained gratifying serviceability.

Detailed description of the invention

Embodiment

The present embodiment LED heat sink material is made up of following weight portion raw material: aluminium 75, zirconium silicate 12, strontium oxide strontia 2, zinc oxide 5, boron carbide 8, calcium silicates 3, expanded vermiculite powder 10, aluminium hydroxide 6, magnesium hydroxide 5, diatomite 10, auxiliary agent 5.

Described auxiliary agent is made up of the raw material of following weight portion: the fluorine carbon emulsion 3 of zinc stearate 3, solid content 45%, magnesium salicylate 5, Boratex 1, inorganic Ge powder 8, four acicular type zinc oxide crystal whisker 15, preparation method is: first Boratex 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 residual components mix and blend, make 400 order fine powders, to obtain final product.

The efficient aluminium base composite heat dissipation material of low bulk for described a kind of LED, its manufacture craft comprises following steps:

(1) all the components is mixed together after dispersed with stirring 2h, drops into ball-milling treatment in ball mill, make 10000-hole sieve surplus≤0.05% of gained material;

(2) material of step (1) gained is sent in mould compressing, under nitrogen atmosphere, to naturally cool to room temperature after the temperature sintering 6h of 650-700 DEG C, to be obtained final product.

The more conventional LED of the prepared heat sink material of the present embodiment improves 25.4% with the thermal conductivity factor of heat sink material, and thermal diffusivity improves 22.3%, thermal coefficient of expansion≤1.2%, and heat balance time shorten in average 158min, light fixture improves 23.2% service life.

Claims (2)

1. the efficient aluminium base composite heat dissipation material of low bulk for LED, it is characterized in that, made by the raw material of following weight portion: aluminium 72-75, zirconium silicate 10-12, strontium oxide strontia 1-2, zinc oxide 4-5, boron carbide 6-9, calcium silicates 2-3, expanded vermiculite powder 10-12, aluminium hydroxide 4-6, magnesium hydroxide 3-6, diatomite 8-10, auxiliary agent 4-5;

Described auxiliary agent is made up of the raw material of following weight portion: fluorine carbon emulsion 2-3, the magnesium salicylate 4-5 of zinc stearate 1-3, solid content 45%, Boratex 1-2, inorganic Ge powder 5-8, four acicular type zinc oxide crystal whisker 12-15, preparation method is: first Boratex 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 residual components mix and blend again, make 300-400 order fine powder, to obtain final product.

2. the efficient aluminium base composite heat dissipation material of low bulk for a kind of LED as claimed in claim 1, its production method is as follows:

(1) all the components is mixed together after dispersed with stirring 1-2h, drops into ball-milling treatment in ball mill, make 10000-hole sieve surplus≤0.05% of gained material;

(2) material of step (1) gained is sent in mould compressing, under nitrogen atmosphere, to naturally cool to room temperature after the temperature sintering 4-6h of 650-700 DEG C, to be obtained final product.