【Deep Coating Society Coating Technology】A heat dissipation coating applied to the heat sink of LED lamp

In today's world energy shortage, energy conservation is an important issue we will face in the future In the field of lighting, the application of LED light-emitting products is attracting the attention of the world, LED has many advantages such as high light efficiency, long service life, energy saving, environmental protection, etc.
, and is more and more widely used in many fields
.
It is a new type of light source in the 21st century, which has the advantages
of high efficiency, long life, and not easy to break, which traditional light sources cannot compare.
When the forward voltage is applied, the light-emitting diode can emit monochromatic, discontinuous light, which is a type of
electroluminescence effect.
Changing the chemical composition of the semiconductor material used can cause the light-emitting diode to emit light in near ultraviolet, visible or infrared light
.
Because LED has low voltage (only 1.
5-3V), can actively emit light and has a certain brightness, brightness can be adjusted by voltage (or current), itself is shock-resistant, anti-vibration, long life, so it has played more and more applications in the field of display, especially in the field of fluorescent lamps, with high brightness, long life of the technical advantages
.
In order to adapt to the development trend of energy conservation and environmental protection, LED is currently used on the market instead of incandescent lamps and fluorescent lamps
.
The heat dissipation body of the traditional LED lamp is made of aluminum material, the structure is single, its strength is average, and the heat dissipation performance is not very good
.

LED lights

As we all know, there are three ways of heat conduction: heat conduction, convection, and radiation
.
If the surface of the metal radiator is coated with a layer of radiation coating, convection + radiation synergy can be realized, which can greatly improve the efficiency of heat dissipation, which is not affected by ambient temperature and air flow rate, and will bring a qualitative leap
in performance.
Graphene has excellent electrical and thermal conductivity, the highest thermal radiation efficiency in common materials, can convert a large amount of heat into far-infrared radiation, applied in the heat sink can improve thermal conductivity and heat dissipation efficiency, very suitable for heat dissipation coatings
.
However, the traditional graphene heat dissipation coating uses organic resin film, which is easy to decompose, age, and even scorch or burn in high temperature and high ultraviolet environment, and the organic resin has low thermal conductivity, which greatly reduces the heat dissipation efficiency and service life
of graphene coatings.