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Method for preparing waterproof and oilproof ceramic coating on surface of base material

A technology for ceramic coatings and substrate surfaces, applied in the direction of coatings, etc., can solve difficult and complex problems in industrial application, and achieve excellent waterproof and oil-proof performance, convenient operation, and good adhesion.

Active Publication Date: 2014-05-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As far as the preparation process of superamphiphobic coatings reported in the literature is concerned, most of them require multiple steps, and some are quite complicated, making industrial application difficult.

Method used

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  • Method for preparing waterproof and oilproof ceramic coating on surface of base material
  • Method for preparing waterproof and oilproof ceramic coating on surface of base material
  • Method for preparing waterproof and oilproof ceramic coating on surface of base material

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Under the protection of nitrogen, tetraethyl orthosilicate component A, silica sol component B, silane coupling agent component C with fluorocarbon chain substitution, and long carbon chain silane coupling agent component D were mixed at 10 Mix evenly at ℃, add catalyst E, hydrolyze and condense at 40℃ for 1 hour to prepare a fluorine-silicon modified ceramic coating, in which the mass ratio of components A, B, C, D, and E is 1:0.20:0.15 :0.05:0.1;

[0028] Spin-coat the fluorine-silicon-modified ceramic coating prepared above to the surface of a glass slide treated by soaking in alkaline absolute ethanol with pH 9 for 3 days, control the spin-coating speed to be 1000rpm, and spin-coat for 30s, and then After heat treatment at 80°C for 3 hours, a waterproof and oil-proof glass slide surface can be obtained.

[0029] In this example, the silica sol component B is a silica ethanol sol with a pH=2, a solid content of 5%, and a particle size of 10-100 nm, and the silane co...

Embodiment 2

[0031] Under the protection of nitrogen, tetraethyl orthosilicate component A, silica sol component B, silane coupling agent component C with fluorocarbon chain substitution, and long carbon chain silane coupling agent component D were mixed at 12 Mix evenly at ℃, add catalyst E, and perform hydrolysis and condensation reaction at 45℃ for 1.5 hours to prepare fluorine-silicon modified ceramic coatings, in which the mass ratio of components A, B, C, D, and E is 1:0.31:0.18: 0.06:0.2;

[0032] Spin-coat the above-mentioned fluorine-silicon-modified ceramic coating onto the surface of a silicon wafer treated by soaking in alkaline absolute ethanol with a pH of 9 for 3 days, control the spin-coating speed to be 1500rpm, and spin-coat for 35s, and then After heat treatment at 100°C for 4 hours, a waterproof and oil-resistant silicon wafer surface can be obtained.

[0033] In this example, the silica sol component B is a silica propanol solution with a pH=4, a solid content of 10%,...

Embodiment 3

[0035] Under the protection of nitrogen, tetraethyl orthosilicate component A, silica sol component B, silane coupling agent component C with fluorocarbon chain substitution, and long carbon chain silane coupling agent component D were mixed at 14 Mix evenly at ℃, add catalyst E, and perform hydrolysis and condensation reaction at 50℃ for 2 hours to prepare fluorine-silicon modified ceramic coating, wherein the mass ratio of components A, B, C, D, and E is 1:0.35:0.22: 0.08:0.2;

[0036] Spin-coat the fluorine-silicon-modified ceramic coating prepared above to the surface of the iron sheet that is soaked in alkaline absolute ethanol with pH 10 for 3 days, control the spin-coating speed to be 1800rpm, and spin-coating time is 40s, and then After heat treatment at 120°C for 5 hours, the surface of the waterproof and oil-proof iron sheet can be obtained.

[0037] In this example, silica sol component B is a silica methanol solution with pH = 6, a solid content of 30%, and a part...

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Abstract

The invention discloses a method for preparing a waterproof and oilproof ceramic coating on the surface of a base material. The method comprises the following steps of uniformly mixing a tetraethyl orthosilicate ingredient A, a silica sol ingredient B, a fluorocarbon chain substituted silane coupling agent ingredient C and a long-carbon-chain substituted silane coupling agent ingredient D under the protection of nitrogen gas, adding a catalyst E, carrying out hydrolytic condensation reaction for 1-5 hours at the temperature of 40-80 DEG C, so as to prepare a fluorosilicone modified ceramic coating material, coating the surface of the base material, which is soaked for 3-7 days with alkaline anhydrous ethanol with the pH value of 9-11, with the ceramic coating material in a spin coating manner, and carrying out heat treatment, thereby obtaining the base material surface with excellent waterproof and oilproof properties. The ceramic coating material can be applied to the fields of cooking utensils, metallurgy, the corrosion and pollution prevention of oceans, and the like. The method has the advantages that the process is simple, the operation is easy, the repeatability is good, and the coating material is good in caking property, is transparent and is convenient in application.

Description

technical field [0001] The invention relates to a method for preparing a waterproof and oil-repellent ceramic coating on the surface of a substrate, and belongs to the technical field of superamphiphobic materials. Background technique [0002] There are many ways to prepare the surface of super-amphiphobic materials. According to different principles, there are two different ways: one is to construct nano-microstructures on the surface of low-surface-energy materials; the other is to modify the surface of materials with nano-microstructures. can. Therefore, the focus of preparing a waterproof and oil-repellent surface is to construct the surface nano-rough structure and modify the low surface energy. [0003] In order to prepare super-amphiphobic materials with good performance, researchers have spent a lot of time and effort on a lot of research. CN103290418A proposes a micro-rough structure prepared by an electrochemical etching method, and then a zinc oxide micro-nano ...

Claims

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Application Information

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IPC IPC(8): C09D183/08C09D7/12C08G77/24
Inventor 詹晓力唐永强张庆华陈丰秋
Owner ZHEJIANG UNIV
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