Graphene Institute has developed technology for new type heaters based on graphene added to polymer compositions. They have the ability to operate at low voltages and low currents (voltage no more than 48V, currents 1-1.5A). Herewith the surface temperature of the heaters can vary within 45-2800C and is controlled by the current value. It should be especially accented that the current-voltage characteristics of graphene compounds are nonlinear and strongly depend on temperature, which makes it possible to control heating modes due to self-limitation (dependence of specific resistance on temperature). The efficiency of heaters, as shown by numerous experiments, is 40% to 23% higher than that of existing ceramic, infrared heaters and convectors. In addition, they are lightweight and can be manufactured in-house based on components provided by our company.
1. Graphene heaters based on application of graphene film layers on glass and ceramics
The special compounds are developed that make it possible to apply layers of polymer-graphene compounds on the surface of solid (for example, glass), ceramic and other building materials (ceramic tiles, asphalt, etc.). The main advantage is that the application can be carried out by your own, adjusting the electrical conductivity of the layers, thereby regulating the temperature of the heating element. Ease of use: on any surface of any orientation. Resistance to humidity and ambient temperature; can be used both indoors and outdoors. Some of heaters are shown below.
2. Flexible graphene heaters
In addition to heaters on solid substrates, the Graphene Institute has developed flexible graphene heaters that can be used as a heated part of clothing and shoes, flexible heating panels for home, office and industrial premises.
Correct application of graphene compounds to substrates (solid or flexible) allows for uniform heating (uniform temperature distribution over the surface), as shown in the figure below.
Example of use of graphene heated coatings for road construction: