CN104152763A - Colloidal graphite powder contained aluminum-based composite heat radiating material for LED - Google Patents

Abstract

The invention relates to a lamp heat radiating material and particularly relates to a colloidal graphite powder contained aluminum-based composite heat radiating material for an LED and a production method of the colloidal graphite powder contained aluminum-based composite heat radiating material. The heating radiating material is prepared from the following raw materials in parts by weight: 70-73 parts of aluminum, 10-12 parts of copper, 5-8 parts of silicon, 4-5 parts of colloidal graphite powder, 3-4 parts of nanocarbon, 1-2 parts of sodium dodecyl sulfate, 6-8 parts of gypsum, 4-5 parts of pyrophyllite powder, 8-12 parts of bauxite, 12-15 parts of magnesium powder, 6-8 parts of iron ore concentrate and 4-5 parts of adjuvant. The heat radiating material provided by the invention integrates the advantages of the components such as the aluminum, the copper, the silicon, the bauxite and the colloidal graphite and also has favorable heat conductivity and insulating property; a sodium dodecyl sulfate water solution is used as a medium, so that the compatibility of all the components is more easily realized; the heat radiating material is easy to mold and sinter, compact in structure, smooth and clean on surface, wear-resistant, corrosion-resistant, favorable in mechanical performance, high in heat transfer speed, durable in use and capable of favorably protecting an LED lamp and greatly prolonging the service life of the lamp.

Description

A kind of LED aluminum-base composite heat sink material containing oildag powder

Technical field

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

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, a kind of LED aluminum-base composite heat sink material containing oildag powder is provided, to improve the heat dispersion of material, prolongation LED lamp work-ing life, to achieve these goals, the technical solution used in the present invention is as follows:

A kind of LED aluminum-base composite heat sink material containing oildag powder, it is characterized in that, material of the present invention is made by the raw material of following weight part: aluminium 70-73, copper 10-12, silicon 5-8, oildag powder 4-5, nano-sized carbon 3-4, sodium laurylsulfonate 1-2, gypsum 6-8, pyrophyllite powder 4-5, bauxitic clay 8-12, magnesium powder 12-15, iron ore concentrate 6-8, 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.

Described a kind of LED aluminum-base composite heat sink material containing oildag powder, its manufacture craft comprises following steps:

(1) first sodium laurylsulfonate is dissolved in appropriate water, be mixed with the aqueous solution that massfraction is 10-12%, and drop into other leftover materials and be mixed together after dispersed with stirring 1-2h, material is through oven drying at low temperature, continue to 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 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: the advantage that combines the compositions such as aluminium, copper, silicon, magnesium, gypsum, aluminium vanadine, oildag compared with conventional aluminum heat exchanging material on raw material, have good heat conduction and insulating property concurrently, and take sodium dodecyl sulfate aqueous solution as medium, make between each composition more easily compatiblely, the auxiliary agent wherein adding has and increases the effect melt, improve heat dispersion; Heat sink material moulding prepared by the present invention is easy, and sintering effect is good, the heat sink material compact structure obtaining, any surface finish; wear-and corrosion-resistant, material mechanical performance is good, conducts heat fast; durable in use, can well 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 73, copper 12, silicon 8, oildag powder 5, nano-sized carbon 3, sodium laurylsulfonate 2, gypsum 8, pyrophyllite powder 5, bauxitic clay 10, magnesium powder 15, iron ore concentrate 8, 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.

Described a kind of LED aluminum-base composite heat sink material containing oildag powder, its manufacture craft comprises following steps:

(1) first sodium laurylsulfonate is dissolved in appropriate water, be mixed with massfraction and be 12% the aqueous solution, and drop into other leftover materials and be mixed together after dispersed with stirring 2h, material is through oven drying at low temperature, continue to 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 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 improves 27.4% with the thermal conductivity of heat sink material, and thermal diffusivity improves 23.4%, heat balance time shorten in average 138min, and light fixture improves 22.5% work-ing life.

Claims (2)

1. the LED aluminum-base composite heat sink material containing oildag powder, it is characterized in that, this heat radiation is made by the raw material of following weight part: aluminium 70-73, copper 10-12, silicon 5-8, oildag powder 4-5, nano-sized carbon 3-4, sodium laurylsulfonate 1-2, gypsum 6-8, pyrophyllite powder 4-5, bauxitic clay 8-12, magnesium powder 12-15, iron ore concentrate 6-8, 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. a kind of LED aluminum-base composite heat sink material containing oildag powder as claimed in claim 1, its production method is as follows:

(1) first sodium laurylsulfonate is dissolved in appropriate water, be mixed with the aqueous solution that massfraction is 10-12%, and drop into other leftover materials and be mixed together after dispersed with stirring 1-2h, material is through oven drying at low temperature, continue to 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 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.