Several of the most popular functional self-cleani

Several "functional self-cleaning coatings" are put on the market

several "functional self-cleaning coatings" are put on the market

January 6, 2004

environmental pollution in China's cities is intensifying, especially dust pollution and gas pollution. As a major scenic spot of the city, the outer wall of high-rise buildings is being eroded more and more seriously. Building exterior wall coating can beautify the environment and living room, but due to the poor washability of traditional coatings, the walls become mottled within a short time. Therefore,

how to make this architectural landscape in the city last forever? At present, the "self-cleaning coating material" developed by nanotechnology in China will create a cleaner, healthy and beautiful living environment for people

since this year, many scientific research institutions in China have launched their own unique self-cleaning coatings and other products, which has not only improved the washability of

exterior wall coatings from more than 1000 times to more than 10000 times, and the aging time has been extended by more than 2 times, while

and coated on the surface of glass and ceramic tiles -------- Professor Li Qian/Dean of the school of mechanics and Engineering Sciences of Zhengzhou University applied nano thin layers to make self-cleaning glass and ceramic tiles, It can make the dust

adhering to the surface, oil stains, bacteria, etc. under the irradiation of light and the catalysis of nano materials, turn into gas or substances that are easy to be wiped off. The national "863" project undertaken by the advanced coating engineering research center of the Ministry of education of Shanghai Fudan University "Project -

self-cleaning exterior wall architectural coating research and development project. According to the self-cleaning principle of lotus leaves, that is, there are fine and concave convex

uneven nanostructures on the surface of lotus leaves, and advanced technology is used to make the coating form a concave convex shape similar to that of lotus leaves on the coating surface during the drying and film-forming process. This nano coating can not only make dust particles adhere to the coating surface in a suspended state, but also make water and the coating surface The contact angle of is greatly increased, which is conducive to the rolling of water droplets on the coating surface; At the same time, according to the principle of self stratification of the coating, hydrophobic substances are introduced into the acrylic lotion to make the coating automatically stratified during the drying and film-forming process, so that a hydrophobic layer is enriched on the surface of the coating, further ensuring that the accumulated or adsorbed polluting particles are removed from the coating surface under the scouring of wind and rain, so as to achieve the purpose of self-cleaning

at present, this scientific research achievement of Fudan University has been successfully industrialized, and a production line with an annual output of 5000 tons has been established. The products have been successfully applied to the urban reconstruction of Suzhou, the oil storage tank of Yangzi Petrochemical Company, Century Lianhua supermarket, Wuhan Science and Technology Building, etc

the multifunctional nano coating successfully developed by the school of materials of Hunan University adopts an innovative technological route to optimize the nano components of high

performance architectural coatings, obtains architectural coatings with super washing resistance, weather resistance and antibacterial self-cleaning function, and develops industrialized preparation technology

the new nano composite coating can not only maintain the beauty of the building, restore the "green" of the "old and faded" building, but also purify the indoor air when applied to the interior wall of the building

Chengdu Institute of organic chemistry of Chinese Academy of Sciences and Panzhihua Iron and Steel Research Institute of Panzhihua Iron and Steel Group successfully prepared photocatalytic self-cleaning interior wall coatings in the project of "Research on nano Ti02 and its application technology". After adding special nano-TiO2 to the inner wall

latex coating, they can photocatalystically hydrolyze formaldehyde and antibacterial, thus giving the coating

self-cleaning function. Moreover, the production process of the coating is simple, the raw materials are easy to obtain, the construction is simple, and the coating performance is good. It conforms to the national standard GB/T synthetic resin latex interior wall coating, and the cost is low. The test results show that the purification rate of indoor formaldehyde concentration after using this paint is 81.1%, and the formaldehyde concentration after purification reaches

GB/t health awareness of formaldehyde in indoor air will also be further expanded. At the same time, the antibacterial rates against Escherichia coli and Golden Grape ball

bacteria were 51.79% and 61.9% respectively; The photocatalysis self-cleaning ceramic samples developed were irradiated by indoor fluorescent lamp for 1 hour, and the killing rates of Escherichia coli and Staphylococcus aureus on their surfaces were 100% and 99.99% respectively

the Institute of physical and chemical technology of the Chinese Academy of Sciences has also successfully developed a new photocatalyst coating with multiple functions, such as antibacterial, antifogging, mildew proof, self-cleaning, photocatalytic decomposition of pollutants, etc. The main functional components of this kind of coating are nano

ti02 and its silver complex. The antibacterial experiment shows that the antibacterial rate of this coating against Staphylococcus aureus is greater than

99%, and it also has the advantage of rapid film formation at room temperature. The coating can be used on the surface of a variety of materials such as glass, ceramics, plastics, etc., giving these materials multiple functions such as antibacterial, antifogging, mildew proof, self-cleaning, photocatalytic decomposition of pollutants and so on. Because

this coating can be used on many occasions, such as automotive mirrors, automotive glass, glass curtain walls, and the rapid development of China's civil aviation aircraft, especially domestic C919 and ARJ21 large aircraft. It is an indisputable fact that it is used on road traffic signs,

billboards, cars and train bodies

it can be expected that more multifunctional self-cleaning coatings will be put into the market, making the development of architectural coatings enter a new stage, which is the necessity of the development of material science