氟化有机硅防覆冰涂层的制备及其性能研究

Study of preparation and properties of fluorinated organosilicon anti-icing coatings

在航空航天、交通运输和电力传输等领域,设施表面结冰会带来严重的危害以及经济损失,成为目前工业界亟待解决的难题。首先合成氟化聚硅氧烷,再引入聚脲结构,固化后制得氟化有机硅防覆冰涂层(FPUI)。通过对涂覆于碳钢上的FPUI进行污染物液滴静态接触角测试以及液滴的冻结时间、冰的粘附强度测试等,对FPUI的防污性能、防覆冰性能分别进行评价。结果表明,FPUI对水的静态接触角、滑动角分别为141.71°和19.04°,对酸、碱、盐等污染物的静态接触角分别为120.37°、130.12°和136.84°。冰柱在FPUI上的粘附强度为60.50kPa,冻结时间为82s。该FPUI涂层表现出优越的防污染物附着及防覆冰效果。

In the fields of aerospace,transportation,power transmission,etc.,icing on the surface of equipment caused serious hazards and economic losses,which has become an urgent problem for the industry.In this work,fluorinated polysiloxanes were first synthesized and then polyurea structures were introduced to produce fluorinated silicone anti-icing coatings(FPUI)after curing.The anti-fouling and anti-icing performance of FPUI were evaluated by static contact angle test of pollutant droplets,droplet freezing time and ice adhesion strength test of FPUI coated on carbon steel,respectively.The results showed that the static contact angle and sliding angle of FPUI to water were 141.71°and 19.04°,respectively,and the static contact angle to pollutants such as acid,alkali,and salt were 120.37°,130.12°,and 136.84°,respectively.The ice adhesion strength of the icicle on the FPUI was 60.50kPa,and the freezing time was 82s.This FPUI coating exhibited superior anti-fouling and anti-icing performance.