CN104164631B - A kind of LED aluminum-base composite heat sink material containing modified alumina silicate fibre - Google Patents
A kind of LED aluminum-base composite heat sink material containing modified alumina silicate fibre Download PDFInfo
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- CN104164631B CN104164631B CN201410349555.7A CN201410349555A CN104164631B CN 104164631 B CN104164631 B CN 104164631B CN 201410349555 A CN201410349555 A CN 201410349555A CN 104164631 B CN104164631 B CN 104164631B
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Abstract
The present invention relates to light fixture heat sink material, being specifically related to a kind of LED the aluminum-base composite heat sink material containing modified alumina silicate fibre and production method thereof, this heat sink material is made up of the raw material of following weight portion: aluminum 72 75, aluminium nitride 10 13, lithium oxide 23, bismuth oxide 12, titanium oxide 45, alumina silicate fibre 12 14, alumina powder 58, vinyltrimethoxy silane 24, lithium sulfate 13, sodium carbonate 34, sodium tripolyphosphate 23, auxiliary agent 45；The heat sink material of the present invention has good heat conduction, a heat-sinking capability, and lithium sulfate, sodium carbonate, alumina silicate fibre after the mixing weak solution of sodium tripolyphosphate soaks modification are more easy to and other metal ingredient phase melting, and its capacity of heat transmission is also improved；The heat sink material compact structure that the present invention prepares, any surface finish, heat conductivity is high, and quickly, processing is simple, can be effectively protected LED chip, be greatly prolonged the service life of light fixture in heat radiation.
Description
Technical field
The present invention relates to light fixture heat sink material, be specifically related to a kind of LED the aluminum-base composite heat sink material containing modified alumina silicate fibre and production method thereof.
Background technology
LED is referred to as forth generation light source, has the advantages such as energy-saving and environmental protection, safety, low energy consumption, high brightness, is widely used in daily life, and the heat dispersion of LED lamp itself is most important, directly influences service life and the illuminating effect of light fixture.Existing LED heat sink material is mainly made up of the metal material such as aluminum, copper, exist in actual use cost limit, the insulating properties shortcoming such as not, the formula of the most necessary improvement material, make material reach the best radiating effect, improve the serviceability of light fixture, increase the service life.
Summary of the invention
It is an object of the invention to, it is provided that a kind of LED aluminum-base composite heat sink material containing modified alumina silicate fibre, to improve the heat dispersion of material, improve the service life of LED chip, 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 modified alumina silicate fibre, it is characterized in that, material of the present invention is made up of the raw material of following weight portion: aluminum 72-75, aluminium nitride 10-13, lithium oxide 2-3, bismuth oxide 1-2, titanium oxide 4-5, alumina silicate fibre 12-14, alumina powder 5-8, vinyltrimethoxy silane 2-4, lithium sulfate 1-3, sodium carbonate 3-4, sodium tripolyphosphate 2-3, auxiliary agent 4-5.
Described auxiliary agent is made up of the raw material of following weight portion: butyl stearate 4-5, fluorite fine powder 15-18, zirconium acetate 4-5, glycolic 1-2, iron powder 5-8, potassium fluoroaluminate 6-8, preparation method is: be first dissolved in by glycolic in appropriate water, it is configured to the aqueous solution that concentration is 4-5%, and fluorite fine powder is put in solution, dispersed with stirring filters after uniformly soaking 10-12h, it is dried after being washed to neutrality, gained material mixes with other residual components, and it is heated to 40-50 DEG C, it is cooled to room temperature after constant temperature dispersed with stirring 2-3h, material is ground to form 400-500 mesh fine powder again, obtain.
The described a kind of LED aluminum-base composite heat sink material containing modified alumina silicate fibre, its production method comprises the steps of
(1) first lithium sulfate, sodium carbonate, sodium tripolyphosphate are dissolved in the water of 10 times of its total weight parts, put into alumina silicate fibre subsequently, soak cold drying after 10-12h, by standby after gained material and vinyltrimethoxy silane mixed grinding 4-5h；
(2), after step (1) gained material being mixed 1-2h with the stirring of other residual components, put into ball-milling treatment in ball mill, make 10000-hole sieve surplus≤0.05% of gained material；
(3) material of step (2) gained is sent in mould compressing, after sintering 4-6h with the temperature of 650-700 DEG C under nitrogen atmosphere, through naturally cooling to room temperature and get final product.
It is an advantage of the current invention that: relatively conventional aluminum heat exchanging material combines aluminum on raw material, aluminium nitride, titanium oxide, the advantage of the compositions such as lithium oxide, there is good heat conduction, heat-sinking capability, and utilize lithium sulfate, sodium carbonate, the mixing weak solution of sodium tripolyphosphate carries out immersion treatment to alumina silicate fibre, improve its surface property, it is made not only to be more easy to compatible with other metal ingredient, the capacity of heat transmission can also be improved, auxiliary agent can improve the sintering character of mixing material, prevent material Thermal cracking, the heat sink material compact structure that the present invention prepares, any surface finish, heat conductivity is high, heat radiation is quickly, processing is simple, it can be effectively protected LED chip, thus it is greatly prolonged the service life of light fixture.
Detailed description of the invention
Embodiment
The present embodiment LED heat sink material is made up of following raw material: aluminum 75, aluminium nitride 12, lithium oxide 2, bismuth oxide 1, titanium oxide 5, alumina silicate fibre 14, alumina powder 8, vinyltrimethoxy silane 3, lithium sulfate 2, sodium carbonate 4, sodium tripolyphosphate 3, auxiliary agent 5.
Described auxiliary agent is made up of the raw material of following weight portion: butyl stearate 5, fluorite fine powder 18, zirconium acetate 5, glycolic 2, iron powder 8, potassium fluoroaluminate 6, preparation method is: be first dissolved in by glycolic in appropriate water, it is configured to the aqueous solution that concentration is 5%, and fluorite fine powder is put in solution, dispersed with stirring filters after uniformly soaking 12h, it is dried after being washed to neutrality, gained material mixes with other residual components, and it is heated to 40-50 DEG C, it is cooled to room temperature after constant temperature dispersed with stirring 3h, material is ground to form 500 mesh fine powders again, to obtain final product.
The described a kind of LED aluminum-base composite heat sink material containing modified alumina silicate fibre, its production method comprises the steps of
(1) first lithium sulfate, sodium carbonate, sodium tripolyphosphate are dissolved in the water of 10 times of its total weight parts, put into alumina silicate fibre subsequently, soak cold drying after 12h, by standby after gained material and vinyltrimethoxy silane mixed grinding 5h；
(2), after step (1) gained material being mixed 12h with the stirring of other residual components, put into ball-milling treatment in ball mill, make 10000-hole sieve surplus≤0.05% of gained material；
(3) material of step (2) gained is sent in mould compressing, after sintering 6h with the temperature of 650-700 DEG C under nitrogen atmosphere, through naturally cooling to room temperature and get final product.
The heat conductivity of the heat sink material more conventional LED heat sink material more conventional aluminum base heat sink material obtained by the present embodiment improves 24.4%, and thermal diffusivity improves 26.1%, and heat balance time averagely shortens 144min, and light fixture improves 25.3% service life.
Claims (1)
1. a LED aluminum-base composite heat sink material containing modified alumina silicate fibre, it is characterized in that, this heat sink material is made up of the raw material of following weight portion: aluminum 72-75, aluminium nitride 10-13, lithium oxide 2-3, bismuth oxide 1-2, titanium oxide 4-5, alumina silicate fibre 12-14, alumina powder 5-8, vinyltrimethoxy silane 2-4, lithium sulfate 1-3, sodium carbonate 3-4, sodium tripolyphosphate 2-3, auxiliary agent 4-5；
Described auxiliary agent is made up of the raw material of following weight portion: butyl stearate 4-5, fluorite fine powder 15-18, zirconium acetate 4-5, glycolic 1-2, iron powder 5-8, potassium fluoroaluminate 6-8, preparation method is: be first dissolved in by glycolic in appropriate water, it is configured to the aqueous solution that concentration is 4-5%, and fluorite fine powder is put in solution, dispersed with stirring filters after uniformly soaking 10-12h, it is dried after being washed to neutrality, gained material mixes with other residual components, and it is heated to 40-50 DEG C, it is cooled to room temperature after constant temperature dispersed with stirring 2-3h, material is ground to form 400-500 mesh fine powder again, obtain；
The described LED aluminum-base composite heat sink material containing modified alumina silicate fibre, its production method is as follows:
(1) first lithium sulfate, sodium carbonate, sodium tripolyphosphate are dissolved in the water of 10 times of its total weight parts, put into alumina silicate fibre subsequently, soak cold drying after 10-12h, by standby after gained material and vinyltrimethoxy silane mixed grinding 4-5h；
(2), after step (1) gained material being mixed 1-2h with the stirring of other residual components, put into ball-milling treatment in ball mill, make 10000-hole sieve surplus≤0.05% of gained material；
(3) material of step (2) gained is sent in mould compressing, after sintering 4-6h with the temperature of 650-700 DEG C under nitrogen atmosphere, through naturally cooling to room temperature and get final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410349555.7A CN104164631B (en) | 2014-07-22 | 2014-07-22 | A kind of LED aluminum-base composite heat sink material containing modified alumina silicate fibre |
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| CN201410349555.7A CN104164631B (en) | 2014-07-22 | 2014-07-22 | A kind of LED aluminum-base composite heat sink material containing modified alumina silicate fibre |
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| CN104164631A CN104164631A (en) | 2014-11-26 |
| CN104164631B true CN104164631B (en) | 2016-08-24 |
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| CN101787178B (en) * | 2010-03-09 | 2012-09-05 | 合复新材料科技(无锡)有限公司 | Heat-conduction electric insulation composite material component and manufacturing method thereof |
| CN102030515A (en) * | 2010-10-15 | 2011-04-27 | 广东工业大学 | Low-temperature synthetized aluminum oxide-based ceramic heat dissipation substrate material and preparation method thereof |
| CN102398386B (en) * | 2011-08-31 | 2015-01-28 | 浙江工业大学 | Highly heat-conducting electric insulation composite material |
| CN103682031A (en) * | 2012-09-07 | 2014-03-26 | 茂邦电子有限公司 | Heat radiation baseplate with insulating and radiating layer and manufacturing method thereof |
| CN103435847A (en) * | 2013-09-02 | 2013-12-11 | 上海梵和聚合材料有限公司 | High-heat conductivity composite material for LED (light-emitting diode) lamp, heat-conducting filler and production equipment |
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