The ice covering of transmission lines tends to cause flashover along the surface, and even topple the tower in serious cases, which seriously threatens the safe operation of the power grid. Here, a dual active and passive anti-icing strategy was designed. The active deicing was achieved by photothermal effect, and passive anti-icing was based on superhydrophobicity. On the one hand, the semi-embedded candle ash gives the surface excellent photothermal characteristics, which can quickly melt the ice through sunlight; On the other hand, the superhydrophobic coating based on candle ash demonstrates excellent passive anti-icing performance, which reduces ice adhesion as small as 3.0 kPa and delayed freezing time as long as 1096 s. Furthermore, the semi-embedded structure enables the superhydrophobic coating excellent anti-abrasion ability and outstanding self-cleaning property. This combination of active and passive anti-icing strategies provides a reference for the current anti-icing and deicing methods of transmission lines.
Guiqun Liu,Boyu Zhang,Heming Wang,Qisheng Ma,Guanglei Lv,Xiaoli Zhang,Yishan Wu,Ding Li
In the present study, Ni-P-CS composite coating was prepared on Q235 carbon steel surface by electroless plating method. Candle soot (CS) is the soot produced by incomplete combustion of candles, and it is mainly composed of amorphous carbon and carbon nanoparticles. The results show that: the results indicated that the corrosion resistance of the Ni-P deposit improved with the incorporation of candle soot (CS). The electrochemical test of Q235 carbon steel, Ni-P and Ni-P-CS with 3.5% NaCl solution was performed at room temperature. The test results show that the protection efficiency of the new coating (Ni-P-CS) reaches 78.5%. Compared with the Ni-P coating with the protection efficiency of 47.08%, its corrosion resistance increased by 31.42 percentage points. This study demonstrates for the first time that Ni-P-CS composite coating is a feasible method for metal corrosion prevention, with inexpensive raw materials and easy preparation. It provides a novel idea for petroleum, chemical and other metal anticorrosion fields.
危险品化学品经营许可证（带存储）