General knowledge of coatings: application and development trend of nano materials in coatings

It is suggested that the application of nano materials in coatings is not only to improve the decoration and corrosion resistance of coatings, but also to endow coatings with various functions and special properties 1： Photocatalytic coating Photocatalysis with nano titanium dioxide is a new air purification technology which is booming It can decompose or oxidize all kinds of organic or inorganic pollutants at room temperature by using ultraviolet light including sunlight, so as to remove these pollutants from the air This technology is characterized by low energy consumption, easy operation and high degree of purification, especially for some special pollutants Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Coatings home news: nano materials used in coatings, not only to improve the decorative coating, corrosion resistance, especially to give coatings a variety of functional and special properties 1： Photocatalysis coating with nano titanium dioxide is a new air purification technology which is booming It can decompose or oxidize all kinds of organic or inorganic pollutants at room temperature by using ultraviolet light including sunlight, so as to remove these pollutants from the air This technology has the characteristics of low energy consumption, easy operation and high degree of purification, especially for some special pollutants, it has a more prominent removal effect than other methods, and there is no secondary pollution, so it has a wide application prospect Under the situation that the world environmental pollution problem has been paid more and more attention by the governments of all countries, this technology has become a hot spot in the high-tech competition of western countries, and the development of this industry has made great progress in the past ten years in China, and the technology level of some products has been in the forefront of the world At present, in the theoretical research of photocatalysis technology, many developed countries and China have invested heavily in the research and development work, and vigorously promoted its industrialization, and achieved actual results Among them, nano photocatalysis coating has been used in hospitals, tunnels, acoustic walls and residential buildings, etc., which can be used in various occasions of indoor pollution control and the effect is outstanding There are dozens of other products using photocatalysis technology, mainly used in industries related to people's livelihood, such as textile, sewage treatment, air purification, food packaging, electrical appliances, furniture, tableware, public facilities, etc 2： In some western countries, nanocomposite architectural coatings have been widely used in interior wall coatings The application of nano materials in latex paint in China is more extensive and in-depth than that in foreign countries Dozens of patents have been applied in China, and the technical level of nano composite latex paint ranks in the forefront of the world 3： Gx-sio2 is mixed with transparent varnish by transparent wear-resistant coating, ceramic coating and nano non stick coating, which can greatly improve the hardness, scratch resistance and wear resistance of the coating The wear resistance of the coating is 30 times higher than that of the traditional coating The improvement of coating performance is mainly due to the fact that gx-sio2 is a very hard material, and the ultrafine particles make the coating surface more uniform than the traditional coating additives The wear-resistant coating can be made into water-based or solvent based The wear-resistant coating containing gx-sio2 can be widely used in high temperature resistant, wear-resistant aluminum materials, high polished metal surfaces and the surfaces of wood and other flat materials to improve wear resistance and service life At present, this kind of coating is mainly used in curtain wall coating of commercial buildings, anti-static coating of medical machinery, anti-aging coating of outdoor large natural gas, oil storage tank, high temperature resistant non stick coating of cooking utensils and kitchenware, high temperature oxidation resistant coating of metal heating equipment and many other fields The development of ceramic coatings and non stick coatings is first in Europe, America, South Korea and Japan In China, through the unremitting efforts of technicians from all walks of life, the domestic industrial production of ceramic coatings and nano stick coatings has reached a surface hardness of more than 6h, which has also been in the world's leading level The industry representative is Shanghai yichinalong company 4： Another successful example of foreign application of inorganic nano materials in automobile metallic flash finish is luxury car finish Nano titanium dioxide is mixed with aluminum powder pigment or mica pearlescent pigment in the coating The coating has different color with angle When it is used in coating system with glittering aluminum powder or mica pearlescent pigment, it can present a kind of golden red light in the illumination area of the coating, and reflect blue milk light in the side light area, so it can increase the fullness of metal color and visual angle flicker This makes the coating widely used in high-grade car coatings BASF company has produced a variety of metal flash finish containing nano-to2 At present, Ford, Chrysler, Toyota, Mazda and other famous automobile manufacturing companies have used the car metal flash finish containing to2 Some domestic scientific research institutes and enterprises have started the research in this field and made substantial progress 5： As an important optical pigment, the UV shielding characteristics of nano-to2 have been widely concerned Because the polymer resin used as the base material of the coating will degrade the molecular chain and affect the physical properties of the coating film due to the long-term exposure of the ultraviolet light in the sun, the traditional UV absorbers are mainly organic matters, but the life of the organic UV absorbers is short and toxic, while the nano-to2 particles are a stable and non-toxic UV absorbers The coating prepared by the composite of inorganic nano materials and resin is coated on the solid surface, and the nano "mattress" can alleviate the high-speed impact of atoms or molecular clusters This technology can be used to prepare nano scale surface coating NSF in the United States recently also proposed a project application The main point is to study the performance of coatings containing inorganic nano compounds Through fine dispersion control, the interface interaction between nano particles and resin matrix, the film's impermeability, thermal stability, oxygen resistance, tensile property and low temperature resistance are studied, so as to further develop high performance for aircraft, space and related industries Coating provides basis to greatly reduce maintenance costs In terms of electrical properties, electrostatic shielding coating and electrical insulation coating have made breakthroughs Researchers in the United States, Japan and other countries use nano titanium dioxide, tin dioxide, chromium trioxide and resin as electrostatic shielding coating; nano barium titanate and resin as high dielectric insulation coating; nano Fe3O4 and resin as magnetic coating At present, the preparation technology in this area has made a breakthrough and entered the industrialization stage 6： The application prospect of nano materials in the coating industry is broad, but some areas need to be further studied and promoted The industry colleagues have a long way to go, because the application of nano materials is not limited to the coating industry Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,