PVP-based amphiphilic anti-icing coating and preparation method thereof

Abstract

The invention belongs to the field of organic materials, in particular to a PVP-based amphiphilic anti-icing coating and a preparation method thereof. The amphiphilic anti-icing coating based on PVP includes the following components by mass: 100 parts of PDMS; 5-15 parts of amphiphilic polymer based on PVP; 0-15 parts of photothermal material; 2-5 parts of crosslinking agent 1-2 parts of catalyst; in the present invention, PDMS is a hydrophobic segment in the amphiphilic polymer, and PVP is a hydrophilic segment. After cross-linking with the PDMS matrix to form a coating, the surface will produce a microphase separation structure, and at the same time The fluorine-containing FA segment has the characteristics of low surface energy, which greatly reduces the ice shear strength; most preferably, the addition of photothermal materials can efficiently absorb sunlight and convert it into heat energy, so the introduction of photothermal materials into amphiphilic polymer coatings The layer can use its photothermal effect to rapidly heat up under the light, which further improves the anti-deicing effect of the coating.

Description

technical field [0001] The invention belongs to the field of organic materials, in particular to a PVP-based amphiphilic anti-icing coating and a preparation method thereof. Background technique [0002] Icing on equipment operating in the air will seriously affect the operation safety of the equipment, resulting in huge economic losses. For example, icing on transmission lines will pose a serious threat to the normal operation of electric power, railways, and network communication systems; icing on the surface of aircraft will increase flight resistance and fuel consumption, and can reduce performance by up to 50%, and even cause devastating damage. air crash. In order to prevent ice damage, many anti-icing or deicing methods have been developed. Traditional deicing methods include chemical methods, mechanical removal methods, surface electric heating methods, etc. The disadvantages of these methods are high economic cost and large energy consumption. , destroy the surfac...

AI Technical Summary

Problems solved by technology

However, the lubricating layer in SLIPS is easily carried away by water droplets or replaced by ice, resulting in significantly reduced anti-icing performance and poor durability after several icing / deicing cycles

Moreover, the preparation process of the above anti-icing coating is complicated and the cost is high, which restricts its large-scale application

[0004] Therefore, the field of coating anti-icing still faces many challenges, such as: (1) During the process of ice formation on a solid surface, the physical process of ice nucleation and the thermodynamics of phase transition are very complex and need further study; (2) The passive Anti-icing methods cannot achieve optimal anti-icing performance; (3) the relationship between surface wettability transitions and external environmental conditions needs further study; (4) anti-deicing materials do not have sufficient durability for practical applications

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