Depending on the wavelength, the spectrum of solar radiation can be divided into seven segments of radiation - x-rays, gamma rays, visible light, radio waves, microwaves, infrared radiation and visible light. The human eye can only perceive "visible radiation". We call it light. Its unusually striking example is the rainbow, where a very ordinary white color is decomposed into certain segments. Whether it's an infrared camera.
Infrared radiation was discovered at the very beginning of the 19th century. It represents
is electromagnetic radiation, occupying the spectral range that lies in the border between the red light that we can see and shortwave radiation. Today, do-it-yourself infrared cameras are increasingly being made. Infrared radiation can be divided into three ranges:
- Longwave.
- Midwave.
- Shortwave.
Artificial sources of such waves can be incandescent lamps, ceramic or metal stoves, gas burners, spirals, etc. At present, the infrared camera is widelyapplied in a variety of areas of our
daily life. This includes cosmetology, electronics, medicine, and the food industry. Based on infrared radiation, many third-party devices are made - currency detectors, remote controls, heaters and searchlights.
A promising and actual direction of application of the thermal energy of these waves is drying and sterilization of various products and materials. The infrared drying chamber helps to dry and disinfect paints and varnishes and foodstuffs. The industry mainly uses three drying methods:
- Thermoradiation method (using infrared radiation).
- Convective method (using hot air).
- Combined.
The infrared camera helps with any type of enamels and paints, including water-soluble and acrylic. In the process of such drying, paint and varnish materials pass from a liquid to a solid state, chemists call this curing. During drying in a convective chamber, the top layer of the coating first dries up and heats up, subsequently preventing the solvent from escaping.
In order to correctly choose an infrared drying device, you need to pay attention to many factors that can affect the process. First of all, this is the maximum possible heating that an infrared camera can tolerate. In addition, the maximum heating of the substrate of one or anothermaterial, the power that the energy source has, as well as the mass and size of the product being dried.
Among other things, do not forget that the drying time directly depends on the color that the paint has and its composition. This is due to the fact that different materials have different reflectivity. Light tones of paint do not absorb rays and reflect only part of them, which is why they will take a little longer to dry. At the same time, metallic paints can enhance this effect. They contain aluminum particles that reflect rays like a mirror. Dark paints dry much faster.
