A metal surface silane treatment agent containing sodium ethylenediamine tetramethylene phosphonate and preparation method thereof

Abstract

The invention discloses a metal surface silane treating agent containing ethylene diamine tetramethylene risedremate sodium. The metal surface silane treating agent is characterized by being a mixture solution prepared from the following ingredients in parts by weight (gram) in each liter of the mixture: 25-33 parts of vinyl triethoxy silane, 30-43 parts of N-phenyl-3-amino propyl trimethoxy silane, 100-190 parts of aqueous nano-zinc oxide, 3-5 parts of ethylene diamine tetramethylene risedremate sodium, 1-2 parts of 1,6-hexamethylendiamine, 4-5 parts of ethanediol, 2-4 parts of oxalic acid, 2-3 parts of zirconium tetrafluoride, 2-3 parts of ammonium molybdate, 1-2 parts of trimethylolpropane, 1-2 parts of citric acid, 0.8-1 parts of pentaerythritol, 0.6-0.9 parts of hydrogen peroxide tertiary butyl and the balance of water. The aqueous nano-zinc oxide prepared by using the process provided by the invention has high dispersion stability and efficient adhesiveness, and is uniformly distributed on the surface of a metal, so that the metal has high compactness and anti-ion permeability; and due to the added assistant such as the zirconium tetrafluoride and the like, the compactness of a silane absorbing film is increased, the filming quality is improved, the film layer has the characteristics of being strong in adhesion capability, free of cavity and rift, compact and uniform and small in polarization current density, and the production process is environmental-friendly and pollution-free.

Description

technical field [0001] The invention mainly relates to a metal surface silane treatment agent and a preparation method thereof, in particular to a metal surface silane treatment agent containing sodium ethylenediamine tetramethylene phosphonate and a preparation method thereof. Background technique [0002] In the field of metal surface treatment, although traditional phosphate conversion and chromate passivation surface treatment technologies can achieve good results, the waste liquid discharged during the treatment process contains heavy metal ions such as zinc, manganese, nickel, chromium and nitrous acid. Carcinogens such as salt are very serious to environmental pollution, and metal surface silanization treatment technology is considered to be expected to replace phosphate conversion treatment and chromate passivation treatment because it does not involve substances that are harmful to the environment, the production process has low energy consumption, and the technology...

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Problems solved by technology

[0002] In the field of metal surface treatment, although traditional phosphate conversion and chromate passivation surface treatment technologies can achieve good results, the waste liquid discharged during the treatment process contains heavy metal ions such as zinc, manganese, nickel, chromium and nitrous acid. Carcinogens such as salt are very serious to environmental pollution, and metal surface silanization treatment technology is considered to be expected to replace phosphate conversion treatment and chromate passivation treatment because it does not involve substances that are harmful to the environment, the production process has low energy consumption, and the technology has a wide range of applications. Chemical treatment is the latest development direction of metal surface protection alone. In the existing technology, the film formed on the surface of metal workpieces treated with silane solution has uneven density, holes, cracks, and weak adhesion to the metal body.