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Super-amphiphobic acid-resistant coating and preparation method thereof

An acid-resistant coating and super-amphiphobic technology, applied in coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve the problems of high preparation cost, complicated preparation process, and expensive equipment

Pending Publication Date: 2021-05-18
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a superamphiphobic acid-resistant coating and a preparation method thereof, which solves the problems of complicated preparation process, expensive equipment, high preparation cost and harsh preparation conditions in the prior art, and provides a coating with excellent hydrophobicity , oleophobic and acid-resistant metal surface coatings

Method used

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  • Super-amphiphobic acid-resistant coating and preparation method thereof
  • Super-amphiphobic acid-resistant coating and preparation method thereof

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preparation example Construction

[0028] The invention provides a method for preparing a super amphiphobic acid-resistant coating, comprising the following steps:

[0029] Step 1, modified nano-SiO 2 Particle preparation

[0030] nano-SiO 2 The particles were immersed in an ethanol solution of fluorosilane for modification at room temperature, and the modified nano-SiO 2 After the particles are dried, grind and disperse;

[0031] Step 2, preparation of super amphiphobic acid-resistant coating

[0032] Apply the polyurethane anti-corrosion coating on the surface of the pretreated substrate and dry it. After the coating on the surface of the substrate enters a semi-cured state, use a pneumatic powder spray gun to spray the modified nano-SiO 2 The particles are sprayed on the surface of the semi-cured coating and cured to obtain a super-amphiphobic acid-resistant coating.

[0033] The fluorosilane in the fluorosilane-absolute ethanol modification solution is trimethoxy (1H, 1H, 2H, 2H-heptadecafluorodecyl) s...

Embodiment 1

[0035] A preparation method for a super amphiphobic acid-resistant coating, comprising the following steps:

[0036] Step 1, modified nano-SiO 2 Particle preparation: 1g of nano-SiO with a particle size of 20nm 2 Particles were immersed in 15g mass fraction of 0.5wt% trimethoxy (1H, 1H, 2H, 2H-tridecafluorodecyl) silane in ethanol solution and modified at room temperature for 0.5h, and the modified nano-SiO 2 The particles were dried at 100°C for 4 hours, and ground and dispersed to obtain modified nano-SiO with a particle size of 30nm. 2 particle;

[0037] Step 2, preparation of two-component anti-corrosion coatings: prepare two-component polyurethane coatings with the main agent and curing agent of Shijiazhuang Kaibo Chemical Co., Ltd. model XDY-J801 according to the volume ratio of 6:1. After stirring evenly, add After mixing, XDY-J104 polyurethane diluent with the same volume as the two-component polyurethane coating, after mixing evenly, the anti-corrosion coating can ...

Embodiment 2

[0041] A preparation method for a super amphiphobic acid-resistant coating, comprising the following steps:

[0042] Step 1, modified nano-SiO 2 Particle preparation: 1g of nano-SiO with a particle size of 30nm 2 Particles were immersed in 25g mass fraction of 1.5wt% trimethoxyl (1H, 1H, 2H, 2H-tridecafluorodecyl) silane ethanol solution for modification at room temperature for 1h, and the modified nano-SiO 2 The particles were dried at 150°C for 5 hours, and ground and dispersed to obtain modified nano-SiO with a particle size of 50nm. 2 particle;

[0043]Step 2, the preparation of two-component anti-corrosion coatings: prepare two-component polyurethane coatings with Shijiazhuang Kaibo Chemical Co., Ltd. model XDY-J801 main agent and curing agent according to the volume ratio of 6:1. The volume ratio of component polyurethane paint and XDY-J104 polyurethane thinner is 1:1.5, add XDY-J104 polyurethane thinner, and mix well to get anti-corrosion coating;

[0044] Step 3, p...

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Abstract

The invention discloses a super-amphiphobic acid-resistant coating and a preparation method thereof, and belongs to the technical field of corrosion and protection of metal surfaces. The preparation method comprises the following steps: preparing modified nano SiO2 particles, preparing a super-amphiphobic acid-resistant coating, and curing the coating. The coating has the advantages of simple equipment and process, low cost and the like, and has an industrial large-scale production prospect. The prepared super-amphiphobic acid-resistant coating has excellent hydrophobicity, oleophobicity, adhesive force, flexibility, impact resistance and corrosion resistance, and can be applied to corrosion protection of various kinds of carbon steel.

Description

technical field [0001] The invention belongs to the technical field of corrosion and protection of metal surfaces, and in particular relates to a superamphiphobic acid-resistant coating and a preparation method thereof. Background technique [0002] The surface adhesion of the acid-resistant coating in the prior art is relatively high, and the surface is easy to scale, and further development will form defects or even lead to coating damage. For acidic media such as water-containing oils, the equipment media such as storage and transportation are easily adsorbed on the coating on the metal surface during the transfer process, and even block the flow channel. It is difficult to clean and the cost is high. Improving the hydrophobic and oleophobic properties of metal surface coatings can reduce the corrosion of acidic media such as water-containing oils, but currently there are few coatings with the above-mentioned hydrophobic and oleophobic properties, and their performance is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/62
CPCC08K2201/011C09D5/08C09D175/04C09D7/62C09D7/70C08K9/06C08K7/26
Inventor 胡军刘喻波谭远薛静静曹晓飞马雯甄冠楠
Owner NORTHWEST UNIV
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