Heat dissipation coatings, which enhance the thermal performance of an object by increasing the radiation efficiency of its surface (especially by increasing the efficiency of infrared radiation). It has a low cost and is simple to implement. Radiation cooling coatings are applied directly to the surface of the object to be cooled, and can radiate heat from the object to the atmosphere at 8-13.5 μm infrared wavelengths, reducing the surface and internal temperature of the object and cooling it significantly. The paint is not affected by the surrounding medium and can be used in a vacuum environment. The paint can also increase the performance of self-cleaning, insulation, corrosion resistance, water resistance, acid and alkali resistance while playing the role of radiation cooling.

Common heat dissipation methods include.

1. conduction heat dissipation: the heat is transferred to the lower temperature object by means of contact.

2、Evaporative heat dissipation: the way in which heat generators dissipate heat through the evaporation of liquid from their surfaces.

3. Convection heat dissipation: heat dissipation by means of fluid flow to exchange heat.

4、Radiation heat dissipation: Heat is transferred in the form of radiation to the surrounding environment at a lower temperature.

Graphene has a water-repellent, conductive and flaky structure and when applied to a substrate in the form of a coating, it forms a dense and strong net that isolates water from the coating and reduces the contact of water vapour with the substrate. The electrical conductivity of graphene also acts as a cathodic protection, and the addition of graphene dispersions to heat dissipation coatings increases the protection performance by more than five times compared to ordinary coatings.

Applications for graphene dispersions in heat dissipation coatings are:

Thermal coatings with graphene dispersions are used in a wide range of metal components such as electrical and electronic components, LED lamp shades, radiators, generators, automotive component lights, etc.

Properties of graphene heat dissipation coatings:

Graphene dispersion technology: High quality graphene is dispersed in aqueous resins to produce aqueous thermal coatings.

High infrared emissivity: Infrared emissivity up to 0.95.

Excellent heat transfer efficiency: more than 10 times more heat dissipation and 70% to 80% more heat transfer efficiency.

The coating has good mechanical properties: adhesion of 0. Resistant to cold and thermal shock of -20°C~150°C.

Good temperature resistance: high temperature resistance up to 300℃, no peeling, no yellowing, no cracking in long-term use.

Various construction methods:Suitable for spraying process, dipping, scraping, brushing and rolling.

A wide choice of substrates: common metal, ceramic and plastic substrates can be constructed.