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Normal temperature cured self-assembly composite nano oxide anti-corrosive paint

A technology of anti-corrosion coatings and oxides, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of increased energy consumption, unstable film formation, poor anti-corrosion performance, etc.

Inactive Publication Date: 2009-07-15
CHANGZHOU NANOCOATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technologies are all baked at high and medium temperatures, which makes it difficult to surface treat large pieces and increase energy consumption at the same time
In addition, the prior art still has problems such as high porosity of the formed nano-coating, insufficient coating thickness, poor anti-corrosion performance, poor construction leveling, and unstable film formation.

Method used

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  • Normal temperature cured self-assembly composite nano oxide anti-corrosive paint
  • Normal temperature cured self-assembly composite nano oxide anti-corrosive paint
  • Normal temperature cured self-assembly composite nano oxide anti-corrosive paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Dissolve 10 grams of ethyl orthosilicate in 100 grams of absolute ethanol, add 5 grams of 0.5% acetic acid solution, stir at room temperature for 5 hours, add 1 gram of dodecafluoroheptylpropyltrimethoxysilane, N-( β-aminoethyl)-γ-aminopropyltrimethoxysilane 1 gram, continue to stir at normal temperature for 1 hour, because these two silane coupling agents modify the surface of the corresponding nanoparticles, the nanoparticles are self-assembled. A dense coating is formed on the surface of the metal material. The simulated structure and atomic force microscope photos of the nano-anti-corrosion coating are shown in figure 1 , 2 , Nano-particles with uniform particle size self-assembled to form a dense coating. After the sample was cured at room temperature for three days, the salt spray test of the coating on aluminum alloy was up to 70 hours.

Embodiment 2

[0039] Dissolve 10 grams of ethyl orthosilicate in 100 grams of absolute ethanol, add 5 grams of 0.5% acetic acid solution, and stir for 5 hours at room temperature. Obtain nano-silica sol. Dissolve 0.6 g of acetylacetone in 10 g of alcohol, then add 2 g of n-butyl titanate, stir for 5 minutes, add 0.2 g of deionized water, and stir for 1 hour to obtain transparent and stable nano titanium dioxide particles uniformly dispersed in the solvent. After mixing the above two sols, add 3 grams of dodecafluoroheptylpropyltrimethoxysilane and 2 grams of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, and continue stirring at room temperature After 1 hour, due to the modification of the surface of the corresponding nanoparticles by the two silane coupling agents, the nanoparticles self-assemble and a dense coating is formed on the surface of the metal material. SEM photo of titanium dioxide nanoparticles image 3 . After the sample was cured at room temperature for three days, the sa...

Embodiment 3

[0041] Dissolve 10 grams of ethyl orthosilicate in 100 grams of absolute ethanol, add 3 grams of 0.5% acetic acid solution, stir at room temperature for 10 hours, add 1 gram of dodecafluoroheptylpropyltrimethoxysilane, N-( 2 grams of β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1 gram of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, because these two silane coupling agents are in the corresponding The modification of the surface of the nanoparticles allows the nanoparticles to self-assemble and form a dense coating on the surface of the metal material. In order to further increase the thickness of the coating, add 2 grams of hydroxyl silicone oil. The scanning electron microscope photo of the nano anti-corrosion coating is shown in Figure 4 . After the sample was cured at room temperature for three days, the salt spray test of the coating on the magnesium alloy material lasted for 50 hours.

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Abstract

The invention relates to a nanometer antiseptic paint and provides a nanometer composite oxide antiseptic paint for various metal substrates. After the paint is used for treated metal, the coating can be solidified at the normal temperature and has excellent antiseptic property. The composite oxide comprises nanometer silicon dioxide sol and nanometer titanium dioxide sol. After the coating is dried, nanometer particles of the composite oxide subject to the modification of fluorocarbon-type silane coupling agent and other types of organic silane coupling agent undergo self-assembly to form a dense coating with a thickness of 1-5 microns.

Description

Technical field: [0001] The invention belongs to the field of coatings, in particular to the field of nano coatings used in metal surface treatment, and obtains a self-assembled composite nano oxide anticorrosion coating cured at room temperature. Background technique: [0002] Metals have been used throughout the entire history of China and the world. The world-famous bronzes of Xia, Shang and Zhou developed into Han, bronze utensils, and iron weapons. Its development promotes the renewal and advancement of dynasties, and is one of the important witnesses of the development of Chinese history. However, metal corrosion has brought a series of problems such as waste of minerals and environmental pollution, which has a profound impact on people's daily life and the economy of related enterprises. [0003] Metal corrosion is the damage or deterioration of metals caused by the environment. The so-called environment refers to substances in contact with metals, such as air, sea...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/08C23F15/00
Inventor 谢荣才
Owner CHANGZHOU NANOCOATING
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