Method for preventing ice from covering surface of power transmission bare conductor
A bare wire and ice-coating technology is applied in the field of effectively suppressing the formation of icing on the surface of bare wires for power transmission. Ultra-hydrophobic, simple process effect
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Embodiment 1
[0018] Put the aluminum wire (length 15cm, Φ2.76mm) in 20wt%, 25wt%, 30wt% mixed acid etchant for 1.5min, then wash it with ultrasonic pure water, dry it at 70°C for 30min, then dip it in 1.5 Wt% or 2.5wt% fluorosilane is low surface energy modification in the solution of fluorosilane FAS-17 for 12h, and then treated at 100°C for 2h to construct a super-hydrophobic coating with micro-nano pore structure on its surface, Surface microstructure of superhydrophobic anti-icing coating (such as image 3 shown). The mixed acid etchant is formed by mixing hydrofluoric acid, hydrochloric acid, nitric acid and sulfuric acid in a volume ratio of 1:3.5:1:1.
Embodiment 2
[0020] The above-mentioned aluminum wire rapidly treated with 25wt% mixed acid etchant, and the super-hydrophobic anti-icing aluminum wire modified with 2.5wt% fluorosilane solution low surface energy and the smooth aluminum wire without any treatment were treated at -6°C In the following low-temperature environment, supercooled water (water temperature 0°C) was used to carry out the water spray ice coating comparison test, and the surface was covered with ice to actually take pictures: The surface of the super-hydrophobic aluminum wire is coated with ice: as figure 1 a is spraying water for 10 minutes, figure 1 b means spraying water for 30 minutes, figure 1 c is spraying water for 60 minutes, figure 1 d is spraying water for 180 minutes; figure 2 Icing the surface of smooth aluminum wire without any treatment: such as figure 2 a is 10min, figure 2 b is 20min, figure 2 c is shown in 30min. It can be seen that the surface of the smooth aluminum wire without any treat...
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