Deoiling phosphating solution and preparation method thereof

Abstract

The invention discloses a deoiling phosphating solution and a preparation method thereof. The deoiling phosphating solution is prepared through the following raw materials in parts by weight: 3 to 6 parts of hydroxylamine sulphate, 2 to 5 parts of sodium alkylarysulfonate, 1 to 6 parts of hexamine, 12 to 16 parts of zinc dihydrogen phosphate, 12 to 15 parts of N-(phosphonomethyl) glycine isopropylamine salt, 6 to 9 parts of sodium dodecyl sulfate, 2 to 4 parts of carboxymethyl starch sodium, 10 to 14 parts of linolenic acid, 3 to 6 parts of dinitro pentamethylene tetramine, 40 to 60 parts of water, and 15 to 17 parts of sodium fluoborate. A phosphating membrane prepared through the environmentally-friendly deoiling phosphating solution is dense, uniform, nontoxic and environmentally friendly; the deoiling process in the phosphating process is simplified, so that the phosphating efficiency can be improved; in addition, the preparation method is simple, and the cost is low.

Description

technical field [0001] The invention relates to a degreasing phosphating solution and a preparation method thereof. Background technique [0002] Phosphating is a commonly used pretreatment technology. In principle, it should belong to chemical conversion film treatment. It is mainly used for phosphating on the surface of steel, and non-ferrous metals (such as aluminum and zinc) can also be phosphating. Phosphating is a process in which chemical and electrochemical reactions form a phosphate chemical conversion film, and the formed phosphate conversion film is called a phosphating film. The purpose of phosphating is mainly to provide protection for the base metal and prevent the metal from being corroded to a certain extent; it is used as a primer before painting to improve the adhesion and anti-corrosion ability of the paint film layer; it can reduce friction in the metal cold processing process Lubrication. The phosphating process includes chemical and electrochemical re...

AI Technical Summary

Problems solved by technology

Although scientists have done a lot of research in this area, it is not yet fully understood

After the end of World War II, there were few breakthroughs in phosphating technology, but steady development and improvement.

However, the degreasing and phosphating agents currently on the market use strong alkaline hot solutions (high energy consumption, heavy pollution, and the floating oil on the surface of the working fluid will cause secondary oil pollution to the treated parts), or use strong acids, or use easy Combustible, explosive and toxic organic solvents, producing toxic, highly corrosive and heavy pollution of gas, liquid and solid waste