聚苯胺光热超疏水防冰涂层的制备及其防冰除冰性能

Preparation,Anti-icing and De-icing Performance of Polyaniline Photothermal Superhydrophobic Anti-icing Coating

首先以全氟癸基三乙氧基硅烷(FAS)修饰聚苯胺(PANI)得到改性材料F-PANI,进而与有机硅树脂(SR)复合得到兼具光热与超疏水性能的功能性涂层(F-PANI涂层)。该涂层的接触角为150.8°,滚动角为3°。具有较好的力学性能、自清洁性能和防腐性能。在20℃,1 Sun条件下,F-PANI涂层表面可以在5 min内达到83.5℃。在低温条件下,涂层同样表现出优异的光热性能。在-25℃,1 Sun条件下,涂层表面的水滴在830 s时完全冻结。与SR涂层相比,结冰速度明显延迟。在-15℃,1 Sun条件下,F-PANI涂层具有一定的除霜和除冰能力。

The F-PANI material was synthesized by modifying polyaniline(PANI)with perfluorodecyl triethoxysilane(FAS),which was subsequently blended with silicone resin(SR)to fabricate a functional FPANI coating that exhibits both photo-thermal and superhydrophobic properties.The coating displays a contact angle of 150.8°and a rolling angle of 3°,along with superior mechanical strength,self-cleaning ability,and anti-corrosion performance.Upon exposure to 1 Sun irradiation at 20℃,the F-PANI coating can attain a surface temperature of 83.5℃within five minutes.Additionally,the coating demonstrates excellent photo-thermal features even at low temperatures.By 1 Sun irradiation at-25℃,water droplets on the F-PANI coating were observed to be completely freezed after 830 s,showing a significantly slower freezing rate than the SR coating.Furthermore,the F-PANI coating exhibits defrosting and de-icing capability by 1 Sun irradiation at-15℃.