Water-based cleaning agent for surface of aluminum profile

Abstract

The invention discloses a water-based cleaning agent for the surface of an aluminum profile. The water-based cleaning agent is prepared from, 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 triethoxyvinylsilane, 1-2 parts of polyving akohol, 1-2 parts of nanometer titania, 2-3 parts of nanometer zirconium dioxide, 5-6 parts of waterborne polyurethane, 2-3 parts of maleic anhydride, 0.6-0.8 part of lanthanum nitrate, 0.2-0.3 part of OIT, 0.3-0.5 part of trigonella bean gum, 0.7-1 part of allyl alcohol, 0.6-0.8 part of stalactite powder and 100-130 parts of deionized water. The water-based cleaning agent is low in cost, simple in preparing process and short in film formation time; the surface of a film layer is even and flat, and the bonding force on an aluminum alloy base body is good; and the corrosion resistance of the aluminum alloy surface can be improved well, and the environment or equipment is not polluted.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a water-based cleaning agent 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 uniformity o...

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 cathodic corrosion inhibitor, the rare earth conversion film has the advantages of high bonding strength and good durability, but it is prone to cracks, which affects the corrosion resistance. The invention adopts rare earth and siloxane composite film to achieve complementary advantages, and provides an effective, efficient and environmentally friendly process method for aluminum corrosion protection