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Ceramic transforming agent capable of improving corrosion resistance of metal, preparation method and using method thereof

A technology of corrosion resistance and potting agent, applied in the direction of metal material coating process, etc., can solve the problems of limited types of coatings and limited scope of use, and achieve the effects of beautiful appearance, improved bonding, and good electrical conductivity.

Active Publication Date: 2017-05-31
芜湖市瑞杰环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of a single silane treatment agent in the pretreatment of metal surfaces is still in the research and development stage.
[0004] Although the vitrification agent is generally recognized in the home appliance industry, it has not been widely used in other industries. The main reason is that the film layer formed by the combination of zirconium salt and silane coupling agent and the bonding force of the organic coating are only in some The material performance is better, and the types of silane coupling agents suitable for coatings are limited, which greatly limits its application range

Method used

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  • Ceramic transforming agent capable of improving corrosion resistance of metal, preparation method and using method thereof
  • Ceramic transforming agent capable of improving corrosion resistance of metal, preparation method and using method thereof
  • Ceramic transforming agent capable of improving corrosion resistance of metal, preparation method and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A vitrifying agent for improving metal corrosion resistance, containing the following raw materials in weight percentage:

[0045]

[0046]

[0047] 45% fluorozirconic acid provides both fluoride and zirconium ions; 45% fluorotitanic acid provides both fluoride and titanium ions.

[0048] A preparation method of a vitrifier for improving metal corrosion resistance, comprising the following steps:

[0049] 1) Add two-thirds of the formula amount of deionized water into the reaction kettle, then add the formula amount of 45% fluorozirconic acid, 45% fluorotitanic acid and hafnium tetrafluoride in sequence, and stir well until completely dissolved into a clear solution Add the rare earth accelerator cerium nitrate, complexing agent citric acid and oxidizing agent hydrogen peroxide in the formula amount again, and stir until clear and transparent;

[0050] 2) Add one-tenth of the formula amount of deionized water to another container, heat to 30-40°C, add the formula...

Embodiment 2

[0062] A vitrifying agent for improving metal corrosion resistance, containing the following raw materials in weight percentage:

[0063]

[0064] The ammonium fluorozirconate provides both fluoride and zirconium ions; sodium fluorotitanate provides both fluoride and titanium ions.

[0065] A preparation method of a vitrifier for improving metal corrosion resistance, comprising the following steps:

[0066] 1) Add two-thirds of the formula amount of deionized water into the reaction kettle, then add the formula amount of ammonium fluorozirconate, sodium fluorotitanate and hafnium tetrafluoride in sequence, and stir until it is completely dissolved into a clear solution; Add the rare earth accelerator lanthanum nitrate, the complexing agent potassium sodium tartrate and the oxidant potassium chlorate in the prescribed amount, and stir until it is clear and transparent;

[0067] 2) Add one-tenth of the formula amount of deionized water into another container, heat to 30-40°C...

Embodiment 3

[0079] A vitrifying agent for improving metal corrosion resistance, containing the following raw materials in weight percentage:

[0080]

[0081] Potassium fluozirconate provides both fluoride and zirconium ions; sodium fluotitanate provides both fluoride and titanium ions.

[0082] A preparation method of a vitrifier for improving metal corrosion resistance, comprising the following steps:

[0083] 1) Add two-thirds of the formula amount of deionized water into the reaction kettle, then add the formula amount of potassium fluorozirconate, sodium fluorotitanate and hafnium tetrafluoride in sequence, and stir well until completely dissolved into a clear solution; Add the rare earth accelerator cerium chloride, the complexing agent tartaric acid and the oxidant hydrogen peroxide in the prescribed amount, and stir until it is clear and transparent;

[0084] 2) Add one-tenth of the formula amount of water into another container, heat to 30-40°C, add the formula amount of stab...

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Abstract

The invention provides a ceramic transforming agent capable of improving the corrosion resistance of a metal, a preparation method and a using method thereof. Compared with the prior art, the fluorine ions are firstly slightly dissolved on the surface of steel and a zinc substrate and form a compact conversion film layer on the dissolved metal surface with zirconium / titanium / hafnium ions under a certain acidity condition; and an silane coupling agent and a cross-linking agent in a colloid synergistically take effect, and meanwhile, a rare earth promoter in a solution further plays a role. An organic-inorganic hybrid membrane is formed on the metal surface, and the corrosion resistance of the conversion film and the adhesion of electrophoretic paint are superior to those of a ternary phosphating film and an ordinary ceramic transforming film.

Description

technical field [0001] The invention belongs to metal surface treatment technology, and in particular relates to a vitrifying agent for improving metal corrosion resistance, a preparation method and a use method thereof, which are suitable for the pretreatment process of electrophoretic coating of automobiles and auto parts products, so that electrophoretic paint and metal The matrix is ​​tightly bound. Background technique [0002] At present, the application of metal surface treatment agent technology to replace phosphating solution is becoming more and more mature in the home appliance industry, and it is showing a trend of diversification. Among them, zirconium salt or ceramic agent compounded with zirconium salt and silane is dominant. A single zirconium film not only It has poor corrosion resistance, is also brittle, and has poor binding force with electrophoretic organic coatings. [0003] Silane is called industrial monosodium glutamate and is widely used. Silane c...

Claims

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Application Information

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IPC IPC(8): C23C22/34
CPCC23C22/34C23C2222/20
Inventor 褚云婷
Owner 芜湖市瑞杰环保材料科技有限公司
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