PVP-based amphiphilic ice-resistant coating and preparation method thereof

Abstract

The invention belongs to the field of organic materials, and particularly relates to a PVP-based amphiphilic ice-resistant coating and a preparation method thereof. The PVP-based amphiphilic ice-resistant coating is prepared from the following components in parts by mass: 100 parts of PDMS; 5 to 15 parts of a PVP-based amphiphilic polymer; 0-15 parts of a photo-thermal material; 2-5 parts of a crosslinking agent; and 1-2 parts of a catalyst. PDMS in the amphiphilic polymer is a hydrophobic chain segment, PVP is a hydrophilic chain segment, after PVP is crosslinked with a PDMS matrix to form acoating, a micro-phase separation structure is generated on the surface, and meanwhile, a fluorine-containing FA chain segment has the characteristic of low surface energy, so that the ice shearing strength is greatly reduced. Most preferably, due to the addition of the photo-thermal material, sunlight can be efficiently absorbed and converted into heat energy, the photo-thermal material is introduced into an amphiphilic polymer coating, the temperature can be rapidly increased under illumination by utilizing the photo-thermal effect of the coating, and the ice preventing and removing effectsof the coating are further improved.

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. , destroying the sur...

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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