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Method for preparing titanium dioxide anti-corrosion fouling-resistant film on surface of steel substrate

A titanium dioxide, steel-based technology, applied in the field of preparation technology of nano-titanium dioxide film, can solve the problems of low film adhesion and easy cracking, and achieve the effect of simplifying the preparation process

Inactive Publication Date: 2012-01-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to propose a corrosion-resistant and anti-scaling titanium dioxide film on the surface of the steel base, aiming at the problems of corroded substrate, low film adhesion and easy cracking in the process of preparing titanium dioxide film on the metal surface by the sol-gel method. Methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Mix absolute ethanol, tetrabutyl titanate, and diethanolamine in a molar ratio of 10:0.4:0.2, stir at room temperature for 1 hour, then add the mixed solution of absolute ethanol:water with a molar ratio of 1:0.18 to the titanic acid In the tetrabutyl ester solution, wherein the volume ratio of the ethanol / water mixture to the tetrabutyl titanate solution is 1:2, after stirring for 5 minutes, add DMF and benzoic acid so that the concentration of DMF is 0.06mol / L, and the benzoic acid The concentration of the mixture is 0.01mol / L, and after stirring for 2 hours, it is conventionally aged for 24 hours. A3 steel test pieces (50×25×2mm) were polished with 360#, 800#, 1000# water-resistant sandpaper in turn until the surface was smooth, and degreased with acetone or absolute ethanol. Immerse the treated A3 steel sheet in the aged sol for 30 seconds, pull it at a constant speed of 5cm / min, and perform the second dipping and pulling before it is completely dry. The dipping tim...

Embodiment 2

[0018] Mix absolute ethanol, tetrabutyl titanate, and diethanolamine in a molar ratio of 10:0.3:0.1, stir at room temperature for 1 hour, then add the mixed solution of absolute ethanol:water with a molar ratio of 1:0.18 to the titanic acid In the tetrabutyl ester solution, wherein the volume ratio of the ethanol / water mixture to the tetrabutyl titanate solution is 1:2, after stirring for 5 minutes, add DMF and benzoic acid so that the concentration of DMF is 0.06mol / L, and the benzoic acid The concentration of the mixture is 0.01mol / L, and after stirring for 2 hours, it is conventionally aged for 24 hours. A3 steel test pieces (50×25×2mm) were polished with 360#, 800#, 1000# water-resistant sandpaper in turn until the surface was smooth, and degreased with acetone or absolute ethanol. Immerse the treated A3 steel sheet in the aged sol for 30 seconds, pull it at a constant speed of 5cm / min, and perform the second dipping and pulling before it is completely dry. The dipping tim...

Embodiment 3

[0020] Mix absolute ethanol, tetrabutyl titanate, and diethanolamine in a molar ratio of 10:0.5:0.2, stir at room temperature for 1 hour, and then add a mixture of absolute ethanol:water with a molar ratio of 1:0.18 to the titanic acid In the tetrabutyl ester solution, wherein the volume ratio of the ethanol / water mixture to the tetrabutyl titanate solution is 1:2, after stirring for 5 minutes, add DMF and benzoic acid so that the concentration of DMF is 0.06mol / L, and the benzoic acid The concentration of the mixture is 0.01mol / L, and after stirring for 2 hours, it is conventionally aged for 24 hours. A3 steel sheet (50×25×2mm) is polished with 360#, 800#, 1000# water-resistant sandpaper in turn until the surface is smooth, and degreased with acetone or absolute ethanol. Immerse the treated A3 steel sheet in the aged sol for 30 seconds, pull it at a constant speed of 5cm / min, and perform the second dipping and pulling before it is completely dry. The dipping time is 30s, and ...

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PUM

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Abstract

The invention discloses a method for preparing a titanium dioxide anti-corrosion fouling-resistant film on the surface of a steel substrate, which comprises the steps of: firstly, preparing absolute ethyl alcohol solution of tetrabutyl titanate and film forming additive, adding the mixed liquor of alcohol and water, stirring and adding stabilizing agent DMF and corrosion inhibitor benzoic acid, ageing for 24 hours under the normal condition after continuously stirring for 2 hours, preprocessing and soaking the steel substrate in the ageing glue, carrying out lifting and pulling, carrying out the second soaking, lifting and pulling before completely drying, and roasting the obtained thin film in a muffle furnace, thus obtaining the titanium dioxide anti-corrosion fouling-resistant film. The method does not need acid catalyst to be added and the pH value of sol rubber to be controlled and simplifies the preparation technology of the sol rubber.

Description

technical field [0001] The invention belongs to the field of preparation of supported inorganic membranes, and in particular relates to a preparation process of a nano-titanium dioxide membrane with a metal material as a matrix, which can be applied to scale and corrosion resistance of heat transfer surfaces of industrial boilers and heat exchangers. Background technique [0002] Titanium dioxide nano-membranes have received extensive attention in the fields of semiconductors, solar energy conversion, catalysts, high-energy batteries, and environmental protection due to their excellent chemical and physical properties such as acid and alkali resistance, chemical stability, hydrophobicity, and self-cleaning properties. [0003] At present, the processes for preparing titanium dioxide films mainly include electrodeposition, sol-gel, ion sputtering deposition, and chemical vapor deposition. Among them, compared with other film-making methods, the sol-gel method has the advantag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F15/00
Inventor 魏刚乔宁赵佳树
Owner BEIJING UNIV OF CHEM TECH