Thermal radiation film

Thermal radiation plates are based on high emissivity materials and enhance infrared radiation efficiency through microstructure surface treatment. They possess directional heat dissipation, thermal energy redistribution, and environmental adaptability, achieving efficient long-distance heat transfer and system thermal balance.

Production process:

1. Substrate pretreatment process: Surface polishing, degreasing, and activation treatment are performed on metal substrates to enhance coating adhesion and remove impurities.
2. Micro arc oxidation process: Place the metal substrate in the electrolyte and apply high voltage to generate a hard oxide film containing alpha and gamma aluminum oxide on its surface, thereby increasing the emissivity.
3. Sol gel coating process: the sol solution containing silica is coated on the surface of the oxide film, and the nanometer scale sol film is formed through the balance of gravity and surface tension to optimize the far-infrared radiation performance.
4. Pulse electroplating process: High emissivity metals (such as manganese) and their oxide particles are electroplated onto the surface of the substrate using pulse current, forming a dispersed island shaped thermal radiation structure.
5. Laser etching process: using laser to etch microstructures on the surface of the substrate, increasing the effective radiation area and reducing reflectivity, and enhancing thermal radiation directionality.

6. Vacuum coating process: In a vacuum environment, high emissivity metals (such as silver) are evaporated onto the surface of the substrate to form a dense metal film layer, which improves the overall radiation efficiency.
   

Application Scenario:

• Spacecraft temperature control: replaces traditional heat dissipation plates, reduces reliance on complex liquid cooling systems, reduces the weight of satellites/deep space probes, and enhances payload capacity.
• Outdoor electronic devices: provide passive heat dissipation for exposed devices such as 5G base stations and photovoltaic inverters, reduce active heat dissipation energy consumption, and adapt to dusty/high humidity environments.

• Precision instrument protection: suppresses the interference of infrared thermal radiation on optical lenses and lasers, ensures measurement accuracy, and extends the stable operation time of high-precision equipment.