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Preparation method of super-hydrophobic wear-resistant coating containing buffer structure

A technology of wear-resistant coating and buffer structure, applied in coatings, chemical instruments and methods, and devices for coating liquids on surfaces, etc., can solve the problems of poor corrosion resistance of coatings and limited pipelines, and achieve excellent wear resistance. And the effect of corrosion resistance, easy operation and simple preparation process

Active Publication Date: 2022-05-27
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the above methods are limited for practical application in pipelines due to the poor erosion resistance of the coating

Method used

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  • Preparation method of super-hydrophobic wear-resistant coating containing buffer structure
  • Preparation method of super-hydrophobic wear-resistant coating containing buffer structure
  • Preparation method of super-hydrophobic wear-resistant coating containing buffer structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A preparation method of a superhydrophobic wear-resistant coating containing a buffer structure, comprising the following steps:

[0044] Step 1: Preparation of modified TiO 2 particles

[0045]Disperse 0.2 g of lauric acid powder in 15 ml of absolute ethanol, and perform ultrasonic treatment for 10 min to obtain a lauric acid solution. 300 μL of tetraethyl titanate was slowly dropped into the lauric acid solution, and the first magnetic stirring was carried out. The rotating speed of the first magnetic stirring was 400 rpm and the time was 20 min. Then, 200 μL of deionized water and 10 μL of HCl were sequentially added to the solution, and the concentration of HCl was 0.2 mol / L, and then a second magnetic stirring was performed. The rotational speed of the second magnetic stirring was 700 rpm and the time was 20 min. TiO 2 solution. Finally, the modified TiO 2 The solution is centrifuged in a centrifuge to obtain modified TiO 2 particles. The rotational speed of...

Embodiment 2

[0057] A preparation method of a superhydrophobic wear-resistant coating containing a buffer structure, comprising the following steps:

[0058] Step 1: Preparation of modified TiO 2 particles

[0059] Disperse 0.2 g of lauric acid powder in 20 ml of absolute ethanol, and perform ultrasonic treatment for 10 min to obtain a lauric acid solution. 320 μL of tetraethyl titanate was slowly dropped into the lauric acid solution, and the first magnetic stirring was carried out. The rotating speed of the first magnetic stirring was 400 rpm and the time was 30 min. Then, 200 μL of deionized water and 10 μL of HCl were added to the solution in turn, and the concentration of HCl was 0.3 mol / L, and then a second magnetic stirring was performed. The rotation speed of the second magnetic stirring was 800 rpm and the time was 20 min. TiO 2 solution. Finally, the modified TiO 2 The solution is centrifuged in a centrifuge to obtain modified TiO 2 particles. The rotational speed of the c...

Embodiment 3

[0067] A preparation method of a superhydrophobic wear-resistant coating containing a buffer structure, comprising the following steps:

[0068] Step 1: Preparation of modified TiO 2 particles

[0069] Disperse 0.2 g of lauric acid powder in 10 ml of absolute ethanol, and perform ultrasonic treatment for 10 min to obtain a lauric acid solution. 300 μL of tetraethyl titanate was slowly dropped into the lauric acid solution, and the first magnetic stirring was carried out. The rotating speed of the first magnetic stirring was 400 rpm and the time was 30 min. Then, 250 μL of deionized water and 10 μL of HCl were added to the solution in turn, and the concentration of HCl was 0.2 mol / L, and then a second magnetic stirring was performed. The rotation speed of the second magnetic stirring was 800 rpm and the time was 15 min. TiO 2 solution. Finally, the modified TiO 2 The solution is centrifuged in a centrifuge to obtain modified TiO2 particles. The rotational speed of the cen...

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Abstract

The invention discloses a preparation method of a super-hydrophobic wear-resistant coating containing a buffer structure, which comprises the following steps: (1) dispersing lauric acid powder in absolute ethyl alcohol, firstly dropwise adding tetraethyl titanate, then adding deionized water and HCl, and magnetically stirring to prepare a modified TiO2 solution; carrying out centrifugal treatment on the modified TiO2 solution to obtain modified TiO2 particles, and carrying out vacuum drying for later use; (2) pre-cleaning the test piece, preparing a PDMS coating on the surface of the test piece, and carrying out high-temperature curing treatment; (3) precoating epoxy resin on the PDMS coating by using a spin coater; and mixing the modified TiO2 particles with carbon nanotubes, stirring and grinding, then spraying the mixture onto the PDMS coating by using a spray gun, and then putting the PDMS coating into a drying oven for high-temperature heavy pressing to obtain the super-hydrophobic wear-resistant coating. The prepared super-hydrophobic wear-resistant coating containing the buffer structure has excellent wear resistance, corrosion resistance and hydrophobic resistance reduction effects, is high in hardness, does not show brittle damage under particle impact, and can provide safety guarantee for submarine gas pipeline transportation.

Description

technical field [0001] The invention relates to a preparation method of a super-hydrophobic wear-resistant coating containing a buffer structure, in particular to a preparation method of constructing a super-hydrophobic wear-resistant coating with a "meniscus" buffer effect on the surface of a metal material, which belongs to a novel function material preparation technology. Background technique [0002] Various special coating techniques have been developed to protect subsea gas pipelines. Aluminium coatings are one of the most economical corrosion and wear protection systems in the marine environment because an aluminium oxide film is easier to form. However, alumina protective coatings have their inherent limitations, such as numerous pores formed during anodization, which limit their long-term protective ability. In recent years, high-performance polymers and composites have been increasingly used in the field of pipeline engineering. Among them, thermosetting polymer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/12B05D3/00B05D3/02B05D3/04B05D7/00B05D7/22B05D7/24C01G23/053
CPCB05D1/12B05D3/002B05D3/0254B05D3/0413B05D7/225B05D7/54B05D7/24C01G23/0536B05D2401/00
Inventor 边江臧雪瑞曹学文冯佳鑫王秋妍梁法春
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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