Nano coating is a kind of high-tech functional coating, which is the product of nanomaterials and coating. Nano coatings must meet two conditions: first, at least one phase in the size of 1 ~ 100nm; Second, because of the existence of nano phase, the performance of the coating has been significantly improved or has new functions. Scientifically speaking, nano coating should be called NanocompositeCoating, because the coating itself is a kind of composite materials, so it is called nano coating.

Nanomaterials have special properties, such as surface effect, small size effect, optical effect, quantum size effect and macroscopic quantum size effect, which can make coatings obtain new functions. When the particle size enters the nanometer scale, the increase of active center on the surface of the material can improve the reaction ability of chemical catalysis and photocatalysis, and give the coating self-cleaning ability under the action of ultraviolet light and oxygen. The functional groups of the surface active center and the film forming material can be bonded by chemical bonds, which greatly increases the rigidity and strength of the coating, thus improving the scratch resistance of the coating. The surface modification of nanomaterials with high surface energy can obtain the characteristics of both water and oil abomination, which can significantly improve the stain resistance and weather resistance of the coatings used for interior and exterior walls. Some nanomaterials with particle size less than 100nm can absorb and scatter Y rays, which can improve the radiation protection ability of the coating, and can play a radon protection role in the interior and exterior coatings. The use of nanomaterials in the primer can increase the adhesion between the primer and the substrate, improve the mechanical strength, and the strong force and filling effect of the nano pigment and primer, help to improve the interface combination of primer and coating; Nanomaterials can play a role in the surface filling and polishing, improve the gloss of the finish, reduce the resistance; Nano-silica added to exterior wall coating can improve the scrubbing resistance of the coating. When nano titanium dioxide is added to the exterior wall coating, the weatherability of latex paint can be improved to a new level, and the aging resistance of latex paint can be improved greatly. Nano zinc oxide added to the exterior wall coating can make the coating have the function of UV shielding, infrared absorption and sterilization.

Classification of nano coatings

Nano-composite coating

Nano composite coating is made of nano ceramic powder coating material, is a kind of chemical reaction to form high temperature resistant ceramic coating material, the high temperature ceramic powder color is silver gray, containing some elements of silicon, aluminum, titanium and oxygen and other inorganic materials, the temperature ceramic powder can be ceramic powder or high temperature resistant ceramic powder coating material. If the researcher wants to use ceramic powder, it is completely possible to mix the ceramic powder with the researcher's high-temperature coating or high-temperature adhesive and paint it on the surface of the metal or ceramic. At the temperature above 400 degrees, the high-temperature ceramic powder will react internally and form several metal compounds on the surface of the metal or ceramic as dense coating material.

Nano cooling paint

Nano cooling coating refers to the resin, filler, additives and other components used in the coating, dispersed into nano level in the solvent, and has the ability to improve the heat dissipation efficiency, reduce the temperature of the heating body of the special coating. This is to solve the heat dissipation problem of the top ten famous brands of special coatings.

Nano-ceramic coating

Nano ceramic powder coating has excellent thermal insulation effect in high temperature environment, no shedding, no burning, water resistance, moisture resistance, non-toxic, no pollution to the environment. The test shows that the heat can be effectively prevented by applying a few centimeters thick nano-ceramic powder coating outside the heat pipe. Coating in the steel mill and other high temperature furnace, can make the furnace surface temperature control within 50 degrees Celsius, suitable for metallurgical, chemical industrial power plant thermal boiler and coking gas and other thermal equipment and thermal pipe network of high temperature equipment anticorrosion, cooling outside the furnace.

Nanocomposite coatings for optical applications

The biggest characteristic of optical application nano composite coating is that its particle size is far less than the wavelength of visible light, so that this nano coating has very good transparency, can absorb ultraviolet rays to the maximum extent. At present, this coating is the most widely used in automotive finish paint and some buildings, of course, when used, you can add some auxiliary materials in the right amount, such as: TiO2, SiO2, etc.

Wave-absorbing nano-composite coatings

Absorbing nano composite coating is a very fine powder coating, can absorb different wavelengths of radar wave and infrared and electromagnetic wave, this kind of coating in the military application is very wide, it can be painted on aircraft, warships, missiles or submarines, can well avoid enemy radar detection, play a very good stealth role. It is believed that through continuous improvement and development, this kind of coating will be more widely used in the future military.

Nano self-cleaning antibacterial paint

Nano self-cleaning antibacterial coating should be the most closely in contact with us. At present, many family decoration will use this coating, which has good self-cleaning function, can ensure indoor clean at the maximum strength, especially can be used in the bathroom, kitchen or ground easy to dirty places, but also has a good sterilization effect. It's a great way to build a healthy life for you and your family.