Heat Reflection Rare Earth Heat Insulation Coating for Commercial Glass Roofing

Product Description

Introduction:
Utilizing the unique electronic structure and physical and chemical properties of rare earths, Rare Earth Coating (RE coating) innovatively uses  nano-rare earth materials to replace traditional ATO and ITO and other transparent thermal insulation materials, and finally achieve 95% infrared / ultraviolet heat insulation effect, which can be directly coated on the glass surface. The temperature can be quickly cooled within 3 hours, and the maximum temperature can be reduced by 7 to 15 degrees, which can save energy by 25%-40%. The performance index of thermal insulation rare earth glass coating far exceeds that of traditional glass insulation products, and is better than similar foreign products, creating a new category. At the technical level, it has completely subverted the thermal insulation performance of traditional glass coating materials.

Technical Principles:
There are three main ways of heat transmission: heat conduction, heat convection, and heat radiation. Thermal conduction refers to heat transfer through a fixed medium, and the heat transfer rate depends on the thermal conductivity of the material. Compared with heat conduction, thermal convection refers to the transfer of heat through a flowing medium, and thermal radiation refers to the transmission of energy by high-temperature objects in the form of electromagnetic waves, which does not rely on the transmission medium itself, which is also the main way for the sun to transmit energy to the earth. For glass, the main forms of heat transmission are heat conduction and heat radiation. At present, double-layer glass is commonly used in residential buildings, and an air layer with lower thermal conductivity is sandwiched between the glass layers, which has a better barrier effect on heat conduction. Therefore, the current poor thermal insulation performance of residential building glass is mainly due to poor barrier performance to sunlight and heat radiation. The spectrum of sunlight is mainly concentrated in the range of 200-2500 nm. The range of 200-400 nm is ultraviolet, whose energy accounts for 5% of the total energy of sunlight, and the range of 400-720 nm is visible light, and its energy accounts for 45% of the total energy of sunlight. In the range of 720-2500 nm, infrared rays account for half of the total energy of sunlight. Infrared rays are invisible to the human eye. Therefore, if the infrared rays are effectively blocked without affecting the transmission of visible light, the heat insulation performance of the glass will be greatly improved.
Traditional technologies such as pasting solar film on the glass surface reduce the infrared transmittance through the principle of light wave reflection to achieve the glass heat insulation effect. Depending on the quality of the product, the barrier rate ranges from 30% to 70%, and it will also cause varying degrees of light pollution.
The free electrons of rare earth thermal insulation materials originate from the nature of rare earth ions and have excellent infrared absorption properties. Under the condition of sunlight, infrared light can be directly absorbed through the LSP R effect, and the radiant energy can be converted into physical heat energy, which is taken away by air convection in large quantities without affecting the transmission of visible light. Therefore, this type of material perfectly meets the needs of transparent insulation materials. In addition, due to the nature of rare earth materials, the formed rare earth insulation materials also have acid resistance, alkali resistance, and super high temperature resistance. Therefore, these materials have excellent aging resistance and stability.

From a technical perspective, we have solved the three pain points of traditional low-e glass and film:
1. Coated metal layer relies on light wave reflection principle. No spectral selectivity
    Our solution: "targeted" shielding sunlight. RE coating does not react with weak ultraviolet,   visible light and far-infrared bands. You can still enjoy the warm winter sun
    
2. The film can only be affixed indoors. It is difficult to exchange heat out after entering the room
     Our solution: can be painted on the outside of glass

3. The low-e coating layer and the film decay quickly. It cannot last long
     Our solution: we use the principle of rare earth absorbing coating on the surface of the stealth fighter, which greatly improves the stability of the material. The RE coating is durable for 10 years