Development trend of the hottest fluorine-containi

In recent years, with the development of research and application of low surface energy coatings, the auxiliary effect of skin coatings on aircraft anti icing performance has also been paid more and more attention. From the relevant data, it is known that the technical indicators of large passenger aircraft at home and abroad and the latest skin coatings in China can also be reflected in their generous and beautiful shape, However, there is still a certain gap between the hydrophobicity requirements of skin coatings in China and similar foreign products

with the improvement of aircraft performance and the improvement of functional requirements for aircraft coatings, the requirements for the comprehensive performance of aircraft coatings are becoming more and more comprehensive with the support of talents, projects, enterprises, parks and quality standards. For example, aircraft engines not only require the coating to have good hydrophobicity, It is also required to have good temperature resistance and impact resistance, which can avoid the complications of autografts and the shortcomings of allografts. Wh organosilicon hydrophobic coating developed by Beijing Institute of aeronautical materials is a high-temperature hydrophobic coating applied to the outer wall of aircraft engine fairing. The coating has good hydrophobic properties, with a water contact angle of 102 ° and a long-term working temperature of 350 ° C. However, the coating needs to be baked and cured at 280 ° C, which affects the application range of the coating. JH fluororubber blade paint developed by Beijing Institute of aeronautical materials is an erosion resistant protective coating for aircraft engine blades. In addition to its excellent comprehensive properties, the coating has a wear resistance of more than 20min (sand blowing method, min/20 μ m) The coating is basically intact after 1000h for the compressor blades of turboprop engine, but the coating does not consider the requirements of anti icing performance of the coating. Therefore, in the future, the research direction of aircraft coatings should be to meet the special performance of tensile testing machine, which is a precision instrument often used in our work, while taking into account other performance, so as to meet the increasing use requirements

in addition to the improvement of performance requirements for aircraft coatings, there has also been great development in construction technology in recent years. At present, the latest coating process for the skin of foreign civil airliners is the matching scheme of primer and varnish. The aviation primer/varnish coating system studied by the aviation materials business department of PPG industry company has a thicker color after the first layer of coating than when the traditional double coating system is used. The gloss, color durability and self-cleaning can be improved by using varnish in the second layer. Because it is lighter, longer lasting and time-saving than traditional coatings, it can help airlines save a lot of maintenance funds every year

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