Composite passivation solution and preparation method and application thereof

A technology of passivation solution and solution, which is applied in the coating process of metal materials, etc., can solve problems such as cumbersome operation, and achieve the effects of improving bonding force, achieving repairability, and excellent anti-corrosion effect

Active Publication Date: 2020-09-04
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above methods all require special electrolysis equipment, and the operation is cumbersome.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 A composite passivation solution

[0043] The raw material composition and proportioning of the composite passivation solution of the present embodiment are (with the composite passivation solution gross weight being 100 parts):

[0044]5 parts of methyltriethoxysilane, 30 parts of methanol, 15 parts of 2.5% hydrochloric acid aqueous solution, 10 parts of 20% acetic acid aqueous solution, 0.5 part of 10% conductive polyaniline butanol solution, and the balance is water.

[0045] Prepared by:

[0046] I. Prepare each raw material according to the ratio;

[0047] II. Methyltriethoxysilane, methanol, 2.5% hydrochloric acid aqueous solution and water were mixed evenly, stirred at 30-38°C for 5 hours, and after cooling to room temperature, a silane coupling agent hydrolyzed solution was obtained;

[0048] III. Under stirring, add 20% acetic acid aqueous solution and 10% conductive polyaniline butanol solution to the hydrolyzed solution of the silane coupling age...

Embodiment 2

[0049] Example 2 A composite passivation solution

[0050] The raw material composition and proportioning of the composite passivation solution of the present embodiment are (with the composite passivation solution gross weight being 100 parts):

[0051] 20 parts of γ-glycidyl etheroxypropyltriethoxysilane, 10 parts of ethanol, 2 parts of 2.5% hydrochloric acid aqueous solution, 0.5 part of 20% citric acid aqueous solution, 10 parts of 10% conductive polyaniline butanol solution, and the balance is water.

[0052] The target composite passivation solution was prepared according to the same method and steps as in Example 1.

Embodiment 3

[0053] Example 3 A composite passivation solution

[0054] The raw material composition and proportioning of the composite passivation solution of the present embodiment are (with the composite passivation solution gross weight being 100 parts):

[0055] 5 parts of ethoxytrimethylsilane, 10 parts of γ-methacryloxypropyl trimethoxysilane, 5 parts of ethanol, 10 parts of n-propanol, 5 parts of 2.5% hydrochloric acid aqueous solution, 1 part of 20% acetic acid aqueous solution , 1 part of 20% citric acid aqueous solution, 2 parts of 10% conductive polyaniline butanol solution, and the balance is water.

[0056] The target composite passivation solution was prepared according to the same method and steps as in Example 1.

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Abstract

The invention provides a composite passivation solution and a preparation method and application thereof. The composite passivation solution is prepared from the raw materials in parts by weight: 5-25parts of a silane coupling agent, 10-30 parts of low-grade saturated fatty alcohol, 2-15 parts of an aqueous hydrochloric acid solution with the mass percentage concentration being 2.5%, 0.5-10 partsof an aqueous organic acid solution with the mass percentage concentration being 20%, 0.5-10 parts of a conductive polyaniline butanol solution with the mass percentage concentration being 0.2%-10%,and the balance of water, wherein the total weight parts of the composite passivation solution are 100. The invention further provides a metal surface anticorrosion method utilizing the composite passivation solution. The composite passivation solution enables a metal substrate to have the good anticorrosion property.

Description

technical field [0001] The invention belongs to the technical field of metal anticorrosion, and in particular relates to a composite passivation solution for metal surface anticorrosion and a preparation method thereof. Background technique [0002] The most commonly used protective method for metal materials is to cover the metal surface with an organic, inorganic or organic-inorganic composite film as a protective layer through physical, chemical or electrochemical processes to prevent or slow down metal corrosion. [0003] The silane coupling agent has a unique chemical structure. Two or more different reactive groups are bonded to the silicon (Si) atom. The chemical formula can be expressed as RSiX 3 . Among them: X is a hydrolyzable group, usually selected from chlorine, methoxy, ethoxy, methoxyethoxy, acetoxy, etc., when these groups are hydrolyzed, silanol (Si(OH) 3 ), thereby combining with inorganic substances to form siloxane; Y is an organic functional group, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/50C23C22/53C23C22/56C23C22/57
CPCC23C22/50C23C22/53C23C22/56C23C22/57C23C2222/20
Inventor 王涛贾恒琼祝和权张恒杜存山李海燕吴韶亮魏曌王玮杜玮伊钟毓南阳张喆
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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