Water-based surface treatment agent and preparation method thereof

Abstract

The invention discloses a water-based surface treatment agent, which is a mixed solution. Per liter of the mixed solution is composed of the following components by weight (g): 30-40 of aminopropyl triethoxysilane, 10-20 of N-phenyl-3-aminopropyl trimethoxy silane, 1-2 of ammonium fluozirconate, 2-4 of hydroxyethyl cellulose, 2-3 of sodium monofluorophosphate, 6-8 of 1, 4-cyclohexanedimethanol, 2-4 of a film-forming agent, and the balance water. The treatment process of the water-based surface treatment agent produced in the invention generates no dreg, the treatment time is short, and the treatment process is easy to control. Being free of harmful heavy metal ions, the water-based surface treatment agent is safe and environment-friendly, and can form a silane coating having excellent corrosion resistance with a metal surface, thus prolonging the service life of the metal.

Description

technical field [0001] The invention mainly relates to a treatment agent, in particular to a water-based surface treatment agent. Background technique [0002] With the maturity of the metal surface treatment process, the traditional phosphate conversion and chromate passivation surface treatment technology is gradually replaced by the environmental protection and energy-saving silanization treatment technology due to factors such as environmental pollution and easy harm to the human body. However, the current silane Chemical treatment mostly simply relies on the film-forming performance of silane, so that the film layer formed on the surface of the metal workpiece treated with silane solution has uneven density, voids, cracks, and weak adhesion to the metal body. Contents of the invention [0003] The purpose of the present invention is to provide a water-based surface treatment agent and a preparation method thereof in order to remedy the defects of the prior art...

AI Technical Summary

Problems solved by technology

[0002] With the maturity of the metal surface treatment process, the traditional phosphate conversion and chromate passivation surface treatment technology is gradually replaced by the environmental protection and energy-saving silanization treatment technology due to factors such as environmental pollution and easy harm to the human body. However, the current silane Most of the chemical treatment is simply relying on the film-forming properties of silane, so that the film layer formed on the surface of the metal workpiece treated with the silane solution has uneven density, voids, cracks, and weak adhesion to the metal body.