Long-time super-hydrophobic wear resistant ceramic coating

A wear-resistant ceramic and super-hydrophobic technology, used in coatings, ceramic products, devices for coating liquids on surfaces, etc. the effect of increasing the surface gas reserves

Active Publication Date: 2017-05-03
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to use ceramic materials with excellent properties to prepare coatings with long-term wear resistance and superhydrophobic durability, solve the problems of poor hydrophobic durability and poor wear resistance existing on superhydrophobic surfaces, and overcome the problems of ceramic coatings at the same time. Hydrophilic and brittle defects of the layer itself

Method used

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  • Long-time super-hydrophobic wear resistant ceramic coating
  • Long-time super-hydrophobic wear resistant ceramic coating
  • Long-time super-hydrophobic wear resistant ceramic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Ceramic coating preparation

[0039] (1) Metal substrate surface pretreatment:

[0040] Use sand blasting technology to derust the surface of the steel plate, put it into 80% ethanol solution for ultrasonic cleaning, remove the surface grease, dust and other impurities, take it out and dry it naturally, and keep it for later use;

[0041] (2) Preparation of bottom layer and surface emulsion:

[0042] Evenly disperse 2 parts of dopamine and 5 parts of carbon nanotubes in 100 parts of water and magnetically stir for 60 minutes, add 40 parts of alumina ceramic emulsion to the above mixed solution under ultrasonic conditions, and obtain a uniform bottom emulsion after 60 minutes of ultrasonic dispersion . Electron microscopy comparative analysis was carried out before and after hydration of the ceramic particles in the bottom emulsion, and the results are shown in the attached Figure 1a and attached Figure 1b . Add 30 parts of polytetrafluoroethylene (PTFE) emulsio...

Embodiment 2

[0057] 1. Ceramic coating preparation

[0058] (1) Metal substrate surface pretreatment:

[0059] Use sandblasting technology and chemical etching to derust the surface of the steel plate, put it into 80% ethanol solution for ultrasonic cleaning, remove the surface grease, dust and other impurities, take it out and dry it naturally, and keep it for later use;

[0060] (2) Preparation of bottom layer and surface emulsion:

[0061] 3 parts of KH570, 5 parts of titanium nanowires and 5 parts of zinc oxide nanowires were uniformly dispersed in 80 parts of water solvent and magnetically stirred for 60 minutes, and 20 parts of alumina ceramic emulsion and 10 parts of nanometer yttrium oxide were added to the In the above mixed solution, a uniform bottom emulsion was obtained after 60 minutes of ultrasonic dispersion. Add 40 parts of polyvinylidene fluoride (PVDF) emulsion to 60 parts of water for magnetic stirring, the operating temperature is about 25°C at room temperature, and t...

Embodiment 3

[0074] 1. Ceramic coating preparation

[0075] (1) Metal substrate surface pretreatment:

[0076] Use 240-mesh sandpaper steel plate surface for derusting treatment, put it into 80% ethanol solution for ultrasonic cleaning, remove surface grease, dust and other impurities, take it out and dry it naturally, and keep it for later use;

[0077] (2) Preparation of bottom layer and surface emulsion:

[0078] 3 parts of KH560 and 9 parts of carbon nanofibers were uniformly dispersed in 50 parts of water solvent and magnetically stirred for 60 minutes, and 20 parts of alumina ceramic emulsion and 20 parts of nano-zirconia dispersion were added to the above mixed solution under ultrasonic conditions, After 60 minutes of ultrasonic dispersion, a uniform bottom emulsion was obtained. Add 20 parts of perfluoroethylene propylene copolymer (FEP) emulsion into water and carry out magnetic stirring. The operating temperature is about 25°C at room temperature, and the stirring time is 3 hou...

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Abstract

The invention discloses a long-time super-hydrophobic wear resistant ceramic coating, which solves the problems of poor durability and the like of a super-hydrophobic ceramic coating. Specifically, ceramic emulsions, nanofiber fillers, water and surface active agents are prepared into bottom emulsions, low-surface energy high-molecular polymer emulsions are used as surface emulsions, the bottom emulsions are quickly sprayed layer by layer at high temperature, the water is used as pore forming materials at the moment so as to quickly volatilize, so that uniform pore structures are constructed at the bottom, and a structural support with good mechanical strength is provided for preparing the durable super-hydrophobic coating; the surface emulsions are sprayed at high pressure and then are injected into the pore structures, so that the adhesion of low-surface energy materials and base materials is greatly increased; and the fibrosis effect of low-surface energy high-molecular polymer is achieved by virtue of high-temperature calcination, so that a fiber net structure is constructed on the surface of the ceramic coating, the super hydrophobicity of the coating is increased, the brittleness of the ceramic coating is improved, and the wear resistance of the coating is increased.

Description

technical field [0001] The invention relates to a superhydrophobic ceramic coating. Background technique [0002] In recent years, superhydrophobic surfaces (the contact angle to water is greater than 150° and the rolling angle is less than 10°) have attracted widespread attention due to their good properties such as anti-corrosion, drag reduction, self-cleaning, and anti-icing. Through the study of super-hydrophobic surfaces in nature, it is found that the super-hydrophobic properties of the surface can be realized by modifying the surface with low surface energy substances with multi-level rough structure. [0003] Although many superhydrophobic surfaces have been prepared by many methods, the application of superhydrophobic surfaces in actual life and production is greatly limited due to the defects of poor hydrophobic durability and poor wear resistance of coatings. [0004] Studies have shown that there are two main reasons for the poor hydrophobic durability and poor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D5/00B05D7/00C04B38/02C04B35/10C04B35/622
CPCB05D5/00B05D7/14B05D7/546B05D2601/20B05D2601/28C04B35/10C04B35/62222C04B38/02C04B2235/3225C04B2235/3244C04B2235/3284C04B2235/404C04B2235/422C04B2235/5248C04B2235/5288
Inventor 汪怀远刘战剑张曦光王池嘉吕重江朱艳吉
Owner NORTHEAST GASOLINEEUM UNIV
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