Environment-friendly low-cost metal surface treatment agent and preparation method thereof

A metal surface treatment, low-cost technology, applied in the direction of metal material coating process, etc., can solve the problems of poor film adhesion and corrosion resistance, dust hanging, environmental pollution, etc., and achieve the effect of low energy consumption and low use cost

Active Publication Date: 2015-01-21
江苏鸿捷环保设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of environmental protection requirements in the coating industry, it is particularly important to replace traditional phosphating products with environmentally friendly coating pretreatment products. At present, the phosphating process used in steel surface pretreatment is prone to produce sediment, dust on workpieces, Defects such as poor film adhesion and corrosion resistance, waste treatment and discharge cost a lot, and inevitably pollute the environment. These outstanding problems have been plaguing the coating production enterprises. With the country's environmental protection, energy saving and emission reduction The degree of attention is constantly increasing. In the future, the problems of environmental protection and energy consumption in the coating industry will become more and more prominent, so it is necessary to improve

Method used

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  • Environment-friendly low-cost metal surface treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take 15 grams of 3-aminopropyltriethoxysilane, 15 grams of dispersible nano-silica, 15 grams of fluotitanic acid, 25 grams of fluozirconic acid, 5 grams of oxalic acid, 8 grams of hydrogen peroxide, 912 grams of water, and 5 grams of ammonia water , produced by the following preparation method:

[0038] (1) Weigh 15 grams of 3-aminopropyltriethoxysilane and add it to 300 grams of water (the conductivity of the water is <10 μs / cm), stir rapidly for 10 minutes to fully dissolve it, and then prepare the semi-finished product A;

[0039] (2) Weigh 15 grams of dispersible nano-silica and add it to 300 parts of water (water conductivity <10μs / cm), stir rapidly for 20 minutes to fully dissolve, add 25 grams of fluozirconic acid and 15 grams of fluotitanic acid, After stirring for 10 minutes, semi-finished product B was obtained;

[0040] (3) Take 5 grams of oxalic acid and add it to 100 grams of water, stir for 10 minutes to dissolve it completely, then add 8 grams o...

Embodiment 2

[0043] Take 20 grams of 3-aminopropyltriethoxysilane, 20 grams of dispersible nano-silica, 25 grams of fluotitanic acid, 15 grams of fluozirconic acid, 10 grams of oxalic acid, 15 grams of hydrogen peroxide, 890 grams of water, and 5 grams of ammonia water , produced by the following preparation method:

[0044] (1) Weigh 20 grams of 3-aminopropyltriethoxysilane and add it to 300 grams of water (the conductivity of the water is <10 μs / cm), stir rapidly for 10 minutes to fully dissolve it, and then prepare the semi-finished product A;

[0045] (2) Weigh 20 grams of dispersible nano-silica and add it to 300 parts of water (the conductivity of water is <10 μs / cm), stir rapidly for 20 minutes to fully dissolve, add 15 grams of fluozirconic acid and 25 grams of fluotitanic acid, After stirring for 10 minutes, semi-finished product B was obtained;

[0046] (3) Take 10 grams of oxalic acid and add it to 100 grams of water, stir for 10 minutes to dissolve it completely, then...

Embodiment 3

[0049] Take 10 grams of 3-aminopropyltriethoxysilane, 10 grams of dispersible nano-silica, 10 grams of fluotitanic acid, 20 grams of fluozirconic acid, 10 grams of oxalic acid, 8 grams of hydrogen peroxide, 930 grams of water, and 10 grams of ammonia water, The preparation method and steps are the same as in Example 1.

[0050] Among them, 3-aminopropyltriethoxysilane (γ-APS) is the main film-forming substance, and their mutual crosslinking can form a dense silane adsorption film on the metal surface; dispersible silica is the auxiliary film-forming substance , to fill the gaps in the silane adsorption film; fluozirconic acid and fluotitanic acid are mainly used to increase the density of the silane adsorption film and improve the film quality of the silane adsorption film; oxalic acid is used to adjust the pH value of the treatment agent (reduce the pH Value), promote the hydrolysis of silane and accelerate its film formation process; hydrogen peroxide is mainly used to incre...

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Abstract

The invention provides an environment-friendly low-cost metal surface treatment agent. The treatment agent is composed of the following raw materials, by weight, 10-20 parts of 3-aminopropyl triethoxysilane, 10-20 parts of dispersed nano-silica, 10-40 parts of hexafluorozirconic acid, 0-25 parts of hexafluorotitanic acid, 5-10 parts of oxalic acid, 8-15 parts of hydrogen peroxide, 887-950 parts of water and 2-5 parts of ammoniacal liquor. In comparison with traditional phosphatization, the invention has advantages of environmental protection property (no toxic heavy metal ion), low energy consumption (use at normal temperature), low use-cost (handling capacity per kilogram is 5-8 times higher than common phosphatization), no slag and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and specifically relates to an environment-friendly low-cost metal surface treatment agent and a preparation method thereof, which are suitable for various industrial fields of metal coating protection, such as household appliances, metal office furniture, automobile manufacturing, electric power equipment, Storage shelves, etc. Background technique [0002] With the continuous improvement of environmental protection requirements in the coating industry, it is particularly important to replace traditional phosphating products with environmentally friendly coating pretreatment products. At present, the phosphating process used in steel surface pretreatment is prone to produce sediment, dust on workpieces, Defects such as poor film adhesion and corrosion resistance, waste treatment and discharge cost a lot, and inevitably pollute the environment. These outstanding problems have been plagu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/46
CPCC23C22/46C23C2222/20
Inventor 陈海波
Owner 江苏鸿捷环保设备有限公司
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