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Anti-oxidation metal surface treatment agent

A metal surface treatment and anti-oxidation technology, applied in the direction of metal material coating process, etc., can solve the problems of localized corrosion, corrosion current density increase, etc., to improve oxidation resistance, tensile strength and thermal stability, good The effect of corrosion inhibition effect

Inactive Publication Date: 2015-08-26
ANHUI HAODING METAL PROD LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the amount is insufficient, a complete oxide film cannot be formed, and the corrosion current density increases on the small metal surface that is not covered, which is likely to cause severe local corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of anti-oxidation metal surface treatment agent, it is made up of the raw material of following weight part:

[0018] Polyvinyl alcohol 20, tea saponin 0.4, sodium citrate 0.8, dodecyl mercaptan 0.3, 2-mercaptobenzimidazole 0.3, antioxidant BHT 0.2, calcium lignosulfonate 0.4, aminotrimethylene Phosphonic acid 2, sericin 6, boric acid 0.08, methyl benzotriazole 20, deionized water 200.

[0019] A preparation method of an anti-oxidation metal surface treatment agent, comprising the following steps:

[0020] (1) Mix sericin and sodium citrate, add 60% of the weight of the above deionized water, stir well, add polyvinyl alcohol, boric acid, keep stirring at 70°C for 60 minutes, add 2-mercaptobenzimidazole , stirred to normal temperature to obtain sericin emulsion;

[0021] (2) Add methyl benzotriazole to dilute lye 5 times its weight, heat to 70°C, add antioxidant BHT and tea saponin, stir evenly to obtain corrosion inhibiting lye;

[0022] (3) Mix the above-ment...

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PUM

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Abstract

The invention discloses an anti-oxidation metal surface treatment agent. The anti-oxidation metal surface treatment agent consists of the following raw materials in parts by weight: 13-20 parts of polyvinyl alcohol, 0.4-1 part of tea saponin, 0.8-1 part of sodium citrate, 0.2-0.3 part of lauryl mercaptan, 0.1-0.3 part of 2-thiol group benzimidazole, 0.1-0.2 part of antioxidant BHT, 0.4-1 part of calcium lignosulphonate, 2-3 parts of amino tri(methylene phosphonic acid), 6-8 parts of sericin, 0.08-0.1 part of boric acid, 10-20 parts of methyl benzotriazole, and 180-200 parts of de-ionized water. The water soluble high-molecular polyvinyl alcohol is mixed with the sericin and is modified by the boric acid to improve the tensile strength and the heat stability of a blended membrane; corrosion inhibition alkali liquid using the methyl benzotriazole as a main material is added, so that the film attached on the metal surface is more uniform and stable to protect a metal material from being corroded by harmful media in atmosphere and water so as to achieve a better corrosion inhibition effect; and the added 2-thiol group benzimidazole and antioxidant BHT can improve the oxidation resistance of the metal surface treatment agent.

Description

technical field [0001] The invention mainly relates to the field of metal surface treatment agents, in particular to an anti-oxidation metal surface treatment agent. Background technique [0002] Metal surface treatment agent refers to the general term for various chemical agents for metal surface treatment. Metal surface treatment includes degreasing, rust removal, phosphating, antirust and other substrate pretreatments, which are prepared for metal coating technology and metal protection technology. The quality of substrate pretreatment has a great influence on subsequent coating preparation and metal use. The water-soluble rust inhibitor can be dissolved in water to form an aqueous solution, and the metal can prevent corrosion and rust after being treated with this aqueous solution. Their antirust effect can be divided into three categories. [0003] ①The metal and the antirust agent form an insoluble and dense oxide film, thus preventing the anodic dissolution of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05
Inventor 李久宁
Owner ANHUI HAODING METAL PROD LIMITED
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