Organic and inorganic compound passivation solution and passivation method

A technology of inorganic compounding and passivation liquid, applied in the field of passivation liquid, can solve the problems of unstable products and passivation production, and achieve the effect of improving anti-corrosion effect and protection life, increasing fingerprint resistance and improving protection life.

Active Publication Date: 2019-12-13
JOMOO KITCHEN & BATHROOM
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Problems solved by technology

Chinese patent CN201110072391.4 discloses a chromium-free composite passivator and its preparation method, including phosphoric acid, acetic acid, sodium molybdate, cerium chloride, γ-methacryloxytrimethoxysilane, epoxy resin, Acrylic resin and ethanol, etc., the passivation solution is close to the corrosion resistance of hexavalent chromium passivation, but because the solvent contains 20-40% ethanol, and ethanol has strong volatility, resulting in insufficient product and passivation production Stablize

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  • Organic and inorganic compound passivation solution and passivation method
  • Organic and inorganic compound passivation solution and passivation method
  • Organic and inorganic compound passivation solution and passivation method

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Embodiment 1

[0035] An environment-friendly passivation solution for stainless steel products, the content of each component by mass percentage is: 20.0% citric acid, 5.0% phytic acid, 0.5% cerium nitrate, 2.0% sodium molybdate, 2.0% triethanolamine, nano-silica sol Dispersion liquid 1.0%, water-based acrylate 1.0%, γ-(2,3-glycidoxy)propyltrimethoxysilane 1.0%, sodium dodecylsulfonate 2.0%, and the balance is water;

[0036] Its passivation method includes the following steps:

[0037] Pretreatment of stainless steel products: use cleaning agent to clean the surface of stainless steel products by soaking or spraying for 3 minutes; then use 1-2 channels of tap water for immersion cleaning for 5 minutes;

[0038] Passivation solution preparation: Dilute the prepared passivation solution stock solution with deionized water, the dilution ratio is 1:6, and the pH value of the diluted passivation solution is about 2.0;

[0039] Passivation: Use the diluted passivation solution to pickle and pas...

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Abstract

The invention discloses an organic and inorganic compound passivation solution and a passivation method. The passivation solution comprises, by mass, 20.0-35.0% of citric acid, 5.0-15.0% of phytic acid, 0.5-2.0% of cerous nitrate, 2.0-3.0% of sodium molybdate, 2.0-3.0% of triethanolamine, 1.0-5.0% of nanometer silicon sol dispersion liquid, 1.0-5.0% of water-borne acrylate, 1.0-5.0% of gama-(2,3-epoxy propoxy) propyl trimethoxy silane, 2.0-10.0% of sodium dodecyl sulfate and the balance water. The passivation method comprises the steps of stainless steel product pretreatment, surface acid passivation, cleaning, drying and the like. The compound passivation solution does not contain nitric acid or chromate, pollution to environment is greatly decreased, and meanwhile, the passivation effectof the traditional nitric acid and chromate technique can be achieved.

Description

technical field [0001] The invention relates to the field of passivation solutions, in particular to an organic-inorganic composite passivation solution and a passivation method. Background technique [0002] As the most frequently used bathroom products in the kitchen, stainless steel products are faced with the failure to fully remove the iron impurities on the surface of the stainless steel products before leaving the factory, and the lack of surface protection measures for stainless steel products, resulting in some users having stainless steel products before they actually move in. Rust phenomenon affects product experience. [0003] In order to overcome the above problems, it is necessary to improve the corrosion resistance of stainless steel products. At present, the passivation protection technology of stainless steel products is mainly used in the industry. Most of the traditional passivation technologies for stainless steel products use "nitric acid / concentrated s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/40
CPCC23C22/40
Inventor 林孝发林孝山汪火良周年润庄子栋
Owner JOMOO KITCHEN & BATHROOM
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