Aluminum-based low-expansion and efficient composite heat radiating material for LED (Light-Emitting Diode)

Abstract

The invention relates to a heat radiating material of luminaires, and in particular relates to an aluminum-based low-expansion and efficient composite heat radiating material for a LED (Light-Emitting Diode) and a production method of the heat radiating material. The heat radiating material is prepared from the following raw materials in parts by weight: 72 to 75 parts of aluminum, 10 to 12 parts of zirconium silicate, 1 to 2 parts of strontium oxide, 4 to 5 parts of zinc oxide, 6 to 9 parts of boron carbide, 2 to 3 parts of calcium silicate, 10 to 12 parts of expanded vermiculite powder, 4 to 6 parts of aluminum hydroxide, 3 to 6 parts of magnesium hydrate, 8 to 10 parts of kieselguhr and 4 to 5 parts of auxiliaries. The heat radiating material has good heat conductivity and insulativity by combining the advantages of the aluminum, the zirconium silicate, the boron carbide, the expanded vermiculite powder, the kieselguhr and the like. The heat radiating material obtained in a sintering manner is compact in structure, smooth and clean in surface, firm, wearproof, resistant to temperature change, difficult to imbibe, expand and crack, small in heat expansion coefficient, safe and durable, and has a good heat radiating capability. Thus, the LED luminaire is efficiently protected for a long time, i.e., the damage to a chip, caused by a high temperature, is avoided. As a result, the service life of the LED luminaire is prolonged, and the satisfactory usability of the LED luminaire is realized.

Description

technical field [0001] The invention relates to a heat dissipation material for lamps, in particular to a low-expansion and high-efficiency aluminum-based composite heat dissipation material for LEDs and a production method thereof. Background technique [0002] LED is called the fourth-generation light source, which has the advantages of energy saving, environmental protection, safety, low energy consumption, and high brightness. It is widely used in daily life. The heat dissipation performance of the LED lamp itself is very important, which directly affects the service life of the lamp. and lighting effects. Existing LED heat dissipation materials are mainly made of metal materials such as aluminum and copper. In actual use, there are disadvantages such as cost limitations and insufficient insulation performance. Therefore, it is necessary to improve the formula of the material to achieve a better heat dissipation effect. , Improve the performance of lamps and prolong the...

AI Technical Summary

Problems solved by technology

Existing LED heat dissipation materials are mainly made of metal materials such as aluminum and copper. In actual use, there are disadvantages such as cost limitations and insufficient insulation performance. Therefore, it is necessary to improve the formula of the material to achieve a better heat dissipation effect. , improve the performance of the lamps and prolong the service life