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Graphene thermal radiation heat dissipation coating greatly improves LED heat dissipation performance

Graphene thermal radiation heat dissipation coating greatly improves LED heat dissipation performance

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2022-07-20
  • Views:640

(Summary description)In recent years, with the continuous development and improvement of LED technology, its luminous efficiency and luminous flux CRI have been significantly improved, but the accompanying heat dissipation problem is still a hurdle that LED lighting sources and lamps cannot bypass. If it is not handled properly, it will cause the temperature of the section to rise, which will lead to a great reduction in the lifespan and performance of the LED lamps.

Graphene thermal radiation heat dissipation coating greatly improves LED heat dissipation performance

(Summary description)In recent years, with the continuous development and improvement of LED technology, its luminous efficiency and luminous flux CRI have been significantly improved, but the accompanying heat dissipation problem is still a hurdle that LED lighting sources and lamps cannot bypass. If it is not handled properly, it will cause the temperature of the section to rise, which will lead to a great reduction in the lifespan and performance of the LED lamps.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2022-07-20
  • Views:640
Information

In recent years, with the continuous development and improvement of LED technology, its luminous efficiency and luminous flux CRI have been significantly improved, but the accompanying heat dissipation problem is still a hurdle that LED lighting sources and lamps cannot bypass. If it is not handled properly, it will cause the temperature of the section to rise, which will lead to a great reduction in the lifespan and performance of the LED lamps.

In order to better solve the problem of heat dissipation, various enterprises have also launched a series of fierce technical competitions, from the structural design of active heat dissipation or passive heat dissipation, to the introduction and application of new heat dissipation materials, and spare no effort to solve the heat dissipation problem. Although there are various heat dissipation methods, in order to cope with the development trend of high power, light and thin LED products, how to find a simple and convenient heat dissipation method that does not increase the weight of lamps has become the focus of enterprises' thinking, and heat dissipation coatings came into being under this background. .

Graphene thermal radiation cooling coating is a kind of cooling coating that achieves cooling by radiating heat, and the temperature resistance can reach 550 degrees. Infrared wavelengths automatically radiate to the atmospheric space to remove the heat applied to the object, rapidly reducing the surface and internal temperature of the object.

It is understood that radiant heat dissipation coatings were previously mainly used in military machinery, industrial equipment, thermal pipelines, oil tanks and other fields. With the rise of the LED industry, LED has become a new application field of radiant heat dissipation coatings. However, the materials used for LEDs are not very large at present, and more applications are in oil tanks and iron smelting plants, in order to maintain the temperature of crude oil, timely loading and unloading, and reduce its safety hazards to prevent explosions.

Hefei Vigon Material Technology is a high temperature resistant heat radiation coating/heat dissipation coating specially developed by Hefei Microcrystalline Material Technology. This product has a thin coating, and the formed coating film has good stability. It can be used for a long time in an environment above 550 ° C without falling off and yellowing. , cracking, etc. The graphene added in the coating improves the infrared heat radiation effect of the coating film, also improves the heat dissipation performance of the parts after painting, and further makes the corrosion resistance, high temperature resistance and other properties of the parts significantly improved.

Experiments show that the graphene thermal radiation cooling coating has a certain effect on cooling. At present, this product has been applied to LED lamps such as downlights, bulb lamps, and street lamps. Under the premise of reasonable heat dissipation design, LED products sprayed with graphene thermal radiation coatings can be cooled by about 10%. It is mainly used in mid-to-high-end products, which is of great help to improve the quality of products. A temperature difference of 5°C plays an important role in the stability, effectiveness and life of LED work.

Graphene thermal radiation heat dissipation coating has a thermal radiation coefficient of more than 95%, and has high emissivity and emissivity in a fairly wide wavelength range (1-13.5μm), which can significantly improve the heat exchange rate of the object and significantly improve the object's thermal conductivity. Heat output. The heat dissipation and cooling coating can work stably for a long time at high temperature, including thermal stability and chemical stability, good weather resistance, acid resistance and alkali resistance.

In order to test the acid and alkali resistance of the material, after a long-term acid and alkali experiment, and soaked in sodium chloride containing 5% capacity, that is, strong acid and alkali, for 72 hours, no shedding and no bubbles appeared. Since the radiant heat dissipation coating was used in the military field before, it was very careful in material selection. All the raw materials used are related to heat dissipation, so it has a longer lasting heat dissipation effect than the general heat dissipation materials on the market.

In addition, the heat dissipation and cooling coating has high bonding strength with metal or ceramic substrates, good adhesion, sufficient mechanical strength and toughness, and will not peel off in sudden cooling and sudden heating. It has good coating technology, convenient and easy coating construction, wear resistance and impact resistance, long service life, and can protect the equipment for a long time. And there is no harmful substances and radiation before and after construction. A new type of environmentally friendly and energy-saving paint.

The graphene thermal radiation cooling coating adopts a high-performance cooling solution, which has special properties such as high visible light and near-infrared light reflectivity, high thermal infrared emissivity and stability, as well as good physical properties, Chemical properties and good construction of a variety of composites.

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