Aluminum profile surface yellowing-resistance treatment liquid

A technology for yellowing resistance and liquid treatment, applied in coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve problems such as affecting corrosion resistance, poor film durability, and easy cracking, achieving low cost and high performance. Stable and strong adhesion

Inactive Publication Date: 2016-02-17
DANGTU WEISIGONGCHUANG IND PROD DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 1990s, some people have used it in metal surface protection, and found that silane coupling agent has a better metal protection effect, but the silane superhydrophobic film is uniform and dense, which can effectively prevent the invasion of corrosive media, but this The durability of the film-like layer is poor, and once it is damaged, the entire film layer will quickly fail. As a catho

Method used

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Experimental program
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Embodiment Construction

[0012] An anti-yellowing treatment solution for the surface of aluminum profiles, prepared from the following raw materials in parts by weight (kg): 0.5 benzotriazole, 5 cerous nitrate, 1 sodium fluoride, 1.5 hydrogen peroxide, and vinyl triethyl Oxysilane 20, polyvinyl alcohol 1, nano titanium dioxide 1, nano aluminum oxide 2, water-based polyurethane 5, tetraethylamine tetrafluoroborate 0.2, diethylene glycol monobutyl ether 0.3, N trifluoroacetyl D-glucosamine 1. Precipitated barium sulfate 1, tungsten carbide 0.3, deionized water 100.

[0013] The anti-yellowing treatment solution for the surface of aluminum profiles is prepared by the following specific steps:

[0014] (1) Mix vinyltriethoxysilane, deionized water and absolute ethanol evenly according to the volume ratio of 5:5:90, then drop in acetic acid to adjust the pH value to 6.5, stir and hydrolyze at room temperature for 48 hours for later use;

[0015] (2) Dissolve polyvinyl alcohol with 5 times the amount of de...

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PUM

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Abstract

The present invention discloses an aluminum profile surface yellowing-resistance treatment liquid, which is prepared from the following raw materials by weight: 0.5-1 part of benzotriazole, 5-6 parts of cerous nitrate, 1-2 parts of sodium fluoride, 1.5-2 parts of hydrogen peroxide, 20-24 parts of vinyl triethoxysilane, 1-2 parts of polyvinyl alcohol, 1-2 parts of nanometer titanium dioxide, 2-3 parts of nanometer aluminum oxide, 5-6 parts of aqueous polyurethane, 0.2-0.3 part of tetraethylammonium tetrafluoroborate, 0.3-0.4 part of diethylene glycol monobutyl ether, 1-2 parts of N-trifluoroacetyl-D-glucosamine, 1-2 parts of precipitated barium sulfate, 0.3-0.4 part of tungsten carbide, and 100-130 parts of deionized water. According to the present invention, the prepared treatment liquid has characteristics of firm binding with aluminum profile substrates, good corrosion resistance, strong adhesion with organic coatings, yellowing resistance, and generous appearance; and the preparation method has advantages of energy saving, time saving, high production efficiency, low cost, simple process, and stable product performance.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to an anti-yellowing treatment liquid for the surface of aluminum profiles. Background technique [0002] Aluminum is one of the most widely used non-ferrous metals. It has the characteristics of light weight, high mechanical performance, good thermal and electrical conductivity, and corrosion resistance in the atmosphere. It is widely used in petroleum, aviation and light industry and other fields. Due to the relatively active nature of aluminum, a dense aluminum oxide film is formed on the surface when high temperature is applied during the forming process. At the same time, aluminum alloy profiles will be contaminated with a lot of oil, dust and other pollutants during transportation and storage. The presence of the molten metal will hinder the good combination between the formation of inclusions, while absorbing moisture in the air to destroy the continuity and unifor...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D175/04C09D5/08C09D7/12
Inventor 于沛
Owner DANGTU WEISIGONGCHUANG IND PROD DESIGN CO LTD
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