Preparation method of super-hydrophobic coating with anti-icing/deicing function

Abstract

The invention relates to a preparation method of a super-hydrophobic coating with an anti-icing / deicing function. The preparation method comprises the following steps: (1) synthesizing layered basic zinc acetate powder by a hydrothermal method; (2) modifying layered basic zinc acetate with polydopamine; (3) preparing an aluminum phosphate binder; (4) preparing an ethanol solution of the ball-milled carbon nanotubes; (5) uniformly mixing the substances in proportion and adding a water repellent agent; and (6) spraying to prepare the coating. The coating has the electrothermal effect, the photothermal effect, the super-hydrophobic performance and the acid and alkali resistance at the same time, and can be suitable for multiple environments. In the daytime, the coating is rapidly heated to remove ice (photo-thermal) under direct sunlight radiation, in the night, ice (electric heating) can be rapidly removed by loading small voltage at the two ends of the coating, during snowing, electric heating and photo-thermal work simultaneously, and electric energy consumption can be greatly reduced. In addition, when it rains, accumulated water on the super-hydrophobic surface quickly rolls away from the surface, and therefore the freezing area on the surface of the coating under the low-temperature condition can be effectively reduced.

Description

A kind of preparation method of superhydrophobic coating with anti-icing / de-icing function technical field [0001] The invention belongs to the field of deicing, in particular to electrothermal, photothermal deicing technology. Background technique The problem of icing on aircraft wings, highways, wind turbine blades and high-voltage power lines has caused people's daily life. It is imperative to develop high-efficiency, low-energy and environmentally friendly anti-icing / de-icing solutions. At present, to solve the icing problem Two strategies are proposed, namely active de-icing and passive anti-icing. Among them, active deicing mainly uses electric heat [Journal of Colloid and Interface Science. 2017, 506:429], Photothermal [ACS Applied Materials & Interfaces. 2020, 12(41):46981], Mechanical and Chemical Deicing [ACS Applied Materials & Interfaces. 2016, 8, 14169], while passive anti-icing uses superhydrophobic surfaces (SHSs) imitating lotus leaf structure [A...

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Problems solved by technology

Passive anti-icing methods are prone to failure in extremely harsh environments (low temperature and high humidity) [Chemical Reviews. 2015, 115, 8230; Advanced Materials. 2014, 26, 6872]

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