The unique properties of 4 thermal conductive materials can solve the heat dissipation problem of high-power LED lighting
In high-power LED lighting solutions, the design challenges encountered are heat dissipation design and overheat protection. Compared with other light sources, the power and thermal management system required by the LED light source converts most of the electrical energy provided to the LED into heat. Without proper thermal management, this heat will directly affect the life and color output of the LED, and affect the overall . Solving the heat dissipation problem of LED lighting fixtures is an important link in the design of lighting fixtures that cannot be slackened.
The role of thermally conductive materials commonly used in LED lighting fixtures in lamps is mainly divided into: structural thermally conductive materials and filling thermally conductive materials. In addition to the function of the structural heat-conducting material as the housing of the lamp, it also serves as the heat dissipation of the LED light source, such as: heat-conducting plastic. The filling heat-conducting material is mainly used between the heating element and the heat-dissipating element, as the connection and heat conduction between the two. Since the thermal interface material has low thermal conductivity relative to the heating element and the metal heat sink, the choice of the thermally conductive material is also crucial, which determines the speed of heat transfer.
The following are 4 kinds of thermal conductive materials used in high-power LED cooling solutions:
1. Thermally conductive silicone sheet:
Fill the air gap between the heating element and the heat sink or the metal base to achieve the heat transfer between the heating part and the heat dissipation part. At the same time, it also plays the role of insulation and shock absorption, which can meet the design requirements of miniaturization and ultra-thinness, and is easy to use Sex is one of the best.
2. Thermally conductive silicone grease:
It has excellent thermal conductivity, electrical insulation, stability in use, and high and low temperature resistance. It is a commonly used thermal conductive material for high-power LED lighting fixtures.
3. Thermally conductive double-sided adhesive:
The bonding between the heating fin and the heat sink, with high performance and high adhesion, can replace screwing, simple and convenient to use, which is beneficial to improve production efficiency.
4. Thermally conductive silica gel standing agent:
The one-component silicone standing agent cured at room temperature is non-corrosive to most metals. It has excellent resistance to cold and heat, solvent resistance, water resistance, aging resistance, electrical insulation, and excellent moisture resistance, shock resistance, and Leakage performance.
