Long-acting anti-icing coating as well as preparation method and application thereof

An anti-icing and coating technology, used in polyurea/polyurethane coatings, coatings, devices for coating liquids on surfaces, etc. problems, to achieve the effect of reducing the friction coefficient, delaying volatilization, and good wear resistance of the coating

Active Publication Date: 2021-02-09
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem to be solved: In view of the above technical problems, in order to avoid the poor wear resistance of the superhydrophobic anti-icing coating and the insufficient service life of the lubricating coating, the present invention provides a long-acting anti-icing coating and its preparation method and application. Easy to operate, low cost, simple and effective, the prepared coating has both anti-icing and durable wear resistance

Method used

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  • Long-acting anti-icing coating as well as preparation method and application thereof
  • Long-acting anti-icing coating as well as preparation method and application thereof
  • Long-acting anti-icing coating as well as preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0028] In this embodiment, a modified nano-silica nano-solution is used. Include the following steps:

[0029] (1) Preparation of modified porous silica powder: mix ethanol, deionized water, and ammonia water in a ratio of 20:4:1, stir evenly, add 1vol.% nano-chain silica sol solution dropwise, and then add 0.6vol.% TEOS is used as a cross-linking agent, and then 0.6vol.% n-octyltriethoxysilane is added for surface modification. Finally, the beaker is sealed and stirred for 24 hours to obtain modified nano-SiO 2 solution. Move the solution into an oven at 120°C, dry it completely, and sieve it with a 200-mesh sieve to obtain the modified porous powder;

[0030] (2) Preparation of oil storage powder: Mix 1 g of the modified porous powder prepared in step (1) with 4 g of simethicone oil with a viscosity of 500 CS, stir thoroughly for 10 min, then place it in an autoclave and pressurize to 0.5MPa, keep for 10 minutes, and then ultrasonic for 10 minutes, you can get the oil sto...

Embodiment 2

[0037] In this embodiment, a modified silicon dioxide nanometer solution is used. Include the following steps:

[0038] (1) Preparation of modified porous silica powder: mix ethanol, deionized water, and ammonia water in a ratio of 20:4:1, stir evenly, add 1vol.% nano-chain silica sol solution dropwise, and then add 0.6vol.% TEOS is used as a cross-linking agent, and then 0.6vol.% n-octyltriethoxysilane is added for surface modification. Finally, the beaker is sealed and stirred for 24 hours to obtain modified nano-SiO 2 solution. Move the solution into an oven at 120°C, dry it completely, and sieve it with a 200-mesh sieve to obtain the modified porous powder;

[0039] (2) Preparation of anti-icing coating: mix 10g of butyl acetate and 10g of fluorocarbon resin to obtain a resin solution, then add the modified porous powder prepared in step (1) to the resin solution, ultrasonically mix for 1min, and mix Add 3.33g polyisocyanate in the solution as curing agent, then stir to...

Embodiment 3

[0045] In this embodiment, a modified nano-silica nano-solution is used. Include the following steps:

[0046] (1) Preparation of modified porous silica powder: mix ethanol, deionized water, and ammonia water in a ratio of 20:4:1, add 1vol.% nano-chain silica sol solution dropwise after stirring evenly, and then Add 0.6vol.% TEOS as a cross-linking agent, then add 0.6vol.% n-octyltriethoxysilane for surface modification, and finally, seal the beaker and stir for 24 hours to obtain modified nano-SiO 2 solution. Move the solution into an oven at 120°C, dry it completely, and sieve it with a 200-mesh sieve to obtain the modified porous powder;

[0047] (2) Preparation of oil storage powder: Mix 1 g of modified porous powder prepared in step (1) with 8 g of simethicone oil with a viscosity of 500 CS, stir thoroughly for 10 min, then place it in an autoclave and pressurize to 0.5MPa, keep for 10 minutes, and then ultrasonic for 10 minutes, you can get the oil storage powder.

...

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Abstract

The invention discloses a long-acting anti-icing coating as well as a preparation method and application thereof, and belongs to the technical field of coating preparation. The preparation method comprises the steps of firstly, carrying out hydrophobic and oleophylic modification on porous powder, then carrying out oil storage treatment to enable silicone oil to fully enter pores of the porous powder, then mixing a diluent, resin, a curing agent and the modified porous powder according to a certain proportion to obtain an anti-icing coating, and carrying out drop coating, blade coating or spincoating on the anti-icing coating, and curing the coating to obtain the long-acting anti-icing coating. The anti-icing coating prepared by the invention has anti-icing property and durable wear resistance, is strong in paint film adhesion, easy in method operation, low in cost, simple and effective, is suitable for various substrate materials, and can be applied to the surface of an aircraft, theinner wall of refrigeration equipment and outdoor facilities in cold regions.

Description

technical field [0001] The invention belongs to the technical field of coating preparation, and in particular relates to a long-acting anti-icing coating and its preparation method and application. Background technique [0002] Based on the concept of bionics, people first observed the special micro-nano composite structure on the surface of the lotus leaf, thus proposing the concept of super-hydrophobic, and further prepared a super-hydrophobic coating. This extremely water-repelling surface can be used in anti-icing, self-cleaning, corrosion protection, enhanced heat transfer, and underwater drag reduction. However, the common disadvantage of this kind of interface is that due to the roughness of the surface, the surface will still freeze under the environment of humidity condensation; and the microstructure of the coating surface is easily damaged, the wear resistance is poor, and the ice layer will contact the surface. The rough structure forms a mechanical interlock, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D175/04C09D7/62C09D7/65B05D7/24B05D7/00B05D7/14
CPCC09D127/12C09D175/04C09D7/62C09D7/65C09D7/70B05D7/24B05D7/00B05D7/14C08K2201/011B05D2203/35B05D2203/30C08L83/04C08K9/06C08K7/26
Inventor 张友法肖振余新泉
Owner SOUTHEAST UNIV
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