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Preparation method for environment-friendly passivating solution for building aluminium profile surface

A preparation method and aluminum profile technology, applied in the coating process of metal materials, etc., can solve skin allergies and other problems, and achieve the effect of good bonding force, dense and uniform film layer, bright and beautiful color

Inactive Publication Date: 2015-02-04
无锡永发电镀有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But long-term contact, some people have severe skin allergies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing an environment-friendly passivation solution for the surface of building aluminum profiles, the composition of the passivation solution is as follows: 11% water-based polyurethane, 6.5% r-mercaptopropyltrimethoxysilane, 0.8% fluorotitanic acid, Fluorozirconic acid 2.5%, cerium nitrate 1%, acetic acid 1.7%, glycerol silane ether 5.5%, diammonium hydrogen phosphate 0.5%, ethylene glycol butyl ether 4%, polyethylene oxide 7%, polyoxyethylene polyoxypropylene ether 0.2 %, the balance is deionized water; the preparation method is:

[0018] 1) Add deionized water to the stainless steel reaction tank, and stir at a low speed; slowly add r-mercaptopropyltrimethoxysilane, then add acetic acid, and stir for 4 minutes; then add glycerol silyl ether, and stir for 26 minutes; control the temperature 42°C, then add fluozirconic acid, fluotitanic acid, cerium nitrate, diammonium hydrogen phosphate, stir for 9 minutes, confirm complete dissolution; add water-base...

Embodiment 2

[0022] A method for preparing an environment-friendly passivation solution for the surface of building aluminum profiles. The composition of the passivation solution is: 13% water-based polyurethane, 4.5% r-mercaptopropyltrimethoxysilane, 1.2% fluorotitanic acid, Fluorozirconic acid 1.5%, cerium nitrate 2%, acetic acid 1.3%, glycerol silyl ether 7.5%, diammonium hydrogen phosphate 0.3%, ethylene glycol butyl ether 6%, polyethylene oxide 5%, polyoxyethylene polyoxypropylene ether 0.4 %, the balance is deionized water; the preparation method is:

[0023] 1) Add deionized water to the stainless steel reaction tank, and stir at a low speed; slowly add r-mercaptopropyltrimethoxysilane, then add acetic acid, and stir for 6 minutes; then add glycerol silyl ether, and stir for 20 minutes; control the temperature 46°C, then add fluozirconic acid, fluotitanic acid, cerium nitrate, diammonium hydrogen phosphate, stir for 7 minutes, confirm complete dissolution; add water-based polyuretha...

Embodiment 3

[0027] A method for preparing an environment-friendly passivation solution for the surface of building aluminum profiles, the composition of the passivation solution is as follows: 12% water-based polyurethane, 5.5% r-mercaptopropyltrimethoxysilane, 1.0% fluorotitanic acid, Fluorozirconic acid 2.0%, cerium nitrate 1.5%, acetic acid 1.5%, glycerin silyl ether 6.5%, diammonium hydrogen phosphate 0.4%, ethylene glycol butyl ether 5%, polyethylene oxide 6%, polyoxyethylene polyoxypropylene ether 0.3 %, the balance is deionized water; the preparation method is:

[0028] 1) Add deionized water to the stainless steel reaction tank, and stir at a low speed; slowly add r-mercaptopropyltrimethoxysilane, then add acetic acid, and stir for 5 minutes; then add glycerol silyl ether, and stir for 23 minutes; control the temperature 44°C, then add fluozirconic acid, fluotitanic acid, cerium nitrate, diammonium hydrogen phosphate, stir for 8 minutes, confirm complete dissolution; add water-bas...

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Abstract

The invention discloses a preparation method of an environment-friendly passivating solution for a building aluminium profile surface. The preparation method comprises the steps of adding deionized water in a stainless steel reaction tank, stirring at a low speed, adding gamma-mercaptopropyltrimethoxysilane slowly; then adding acetic acid, stirring for 4-6 minutes, adding glycerol silane ether, stirring for 20-26 minutes, controlling a temperature at 42-46 DEG C, then adding fluozirconic acid, fluotitanic acid, cerous nitrate and diammonium hydrogen phosphate, stirring for 7-9 minutes to confirm that the above materials are dissolved completely, adding waterborne polyurethane and stirring for 10-12 minutes; and (2) adding a small amount of deionized water in another stainless steel container, adding diethanol butyl ether, stirring for 3-5 minutes at a low speed, adding the solution into the reaction tank slowly and stirring for 6-8 minutes at a low speed; and (3) adding polyoxyethylene and polyoxyethylene polyoxypropylene ether in the reaction tank, stirring for 15-25 minutes at a high speed, adding residual deionized water, and stirring for 6-8 minutes at a low speed.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a method for preparing an environment-friendly passivation solution for the surface of building aluminum profiles. Background technique [0002] The film-forming process of paint, or the film-forming mechanism, is nothing more than two types: one is that the solvent evaporates and the paint dries to form a film. It does not undergo a chemical reaction, it is a physical phenomenon. Examples include nitro lacquer and vinyl lacquer. The other is to form a film through chemical reaction cross-linking. [0003] As we all know, environmental protection is no longer a matter of any country or region, but has become a serious social issue of global concern and needs to be solved together. Pre-painting treatment wastewater includes degreasing, rust removal, surface adjustment, phosphating, passivation water and cleaning water, which are often discharged in large quantities, w...

Claims

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Application Information

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IPC IPC(8): C23C22/34
CPCC23C22/34
Inventor 石明
Owner 无锡永发电镀有限公司
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