Environment-friendly nano water-based silane treatment agent capable of improving anti-corrosion performance of metal surface

A kind of metal surface treatment and environmental protection technology, applied in the direction of metal material coating process, etc., can solve the problems of short life of silane film and limited anti-corrosion ability, and achieve the goal of improving anti-corrosion performance, prolonging service life and enhancing adhesion Effect

Active Publication Date: 2010-06-02
HAISO TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the shortcomings of the existing metal surface silane treatment technology, such as the limited anti-corrosion ability and the short life of the silane film, and provide an environmentally friendly nano water-based silane treatment agent that can provide long-term protection for the metal surface.

Method used

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  • Environment-friendly nano water-based silane treatment agent capable of improving anti-corrosion performance of metal surface
  • Environment-friendly nano water-based silane treatment agent capable of improving anti-corrosion performance of metal surface
  • Environment-friendly nano water-based silane treatment agent capable of improving anti-corrosion performance of metal surface

Examples

Experimental program
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Effect test

Embodiment 1

[0027]The preferred preparation method of environment-friendly metal surface treatment agent of the present invention comprises the following steps:

[0028] 1. Slowly add 37.5ml of 1,2-bis(trimethoxysilyl)ethane to 560ml of deionized water dissolved with a small amount of glacial acetic acid, stir vigorously during the addition, and control the amount of glacial acetic acid at a pH of 5-6 Between is appropriate. After adding BTMSE, add 40ml ethanol to the mixed solution;

[0029] 2. After the solution becomes completely clear and transparent, add 12.5ml of 3-glycidyl etheroxypropyltrimethoxysilane and stir thoroughly;

[0030] 3. Add 25 mg of water-dispersible silica to the mixed solution, stir vigorously for 5 minutes, and then put it in an ultrasonic cleaner for 15 minutes;

[0031] 4. Dissolve 250mg of cerium nitrate in 400ml of deionized water, and then add 25mg of nano-cerium oxide to it;

[0032] 5. Place the solution of step 4 above in an ultrasonic cleaner for 15 m...

Embodiment 2-3

[0035] According to the composition composition of the surface treatment agent in Example 1, without changing the type of composition, change the content of some composition components as shown in Table 1, the preparation steps of the treatment agent and the characterization of the metal material sample after treatment and the embodiment 1 is the same.

Embodiment 4

[0037] Type A alkoxysilane is 3-aminopropylethoxysilane, no cerium oxide is added, and cerium chloride is used as a corrosion inhibitor. The composition of other treatment agents remains unchanged. The specific content of each composition is shown in Table 1. . The preparation steps of the treatment agent and the characterization of the treated metal material sample are the same as in Example 1.

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Abstract

The invention discloses an environment-friendly nano water-based silane treatment agent capable of improving anti-corrosion performance of metal surface. The treatment agent is water-based silane solution which consists of at least one alkoxy silane containing epoxy or at least one alkoxy silane containing amino, at least one disilyl silane, nano-silicon dioxide, rare earth salt type corrosion inhibitor or rare earth salt type and rare earth nano oxide, water, or acetic acid and a small amount of ethanol. The metal material is coated by using the silane solution for impregnation, brushing, spraying or spin-coating, a siloxane layer is formed on the metal surface, then the long-acting corrosion resistance is formed by curing for 3 hours at the temperature of 100 DEG C, and a nano organic silane film which has close bonding force with a coating is formed. Nanoparticles can not only improve the corrosion resistance and enhance the mechanical strength of the silane film in a coating layer, but also realize the synergistic corrosion resistance with the corrosion inhibitor. The technology has the advantages of simple process, greenness, environmental protection and strong practicality.

Description

technical field [0001] The invention relates to an environment-friendly water-based metal surface treatment agent, in particular to at least one epoxy-containing alkoxysilane or at least one amino-containing alkoxysilane, at least one bissilylsilane, nano Silicon dioxide, and rare earth salts or an aqueous silane solution composed of rare earth salts and rare earth nano oxides. The invention also relates to a method for using the aqueous silane solution to carry out anti-corrosion treatment on the metal surface. technical background [0002] All materials, especially metals, have problems of corrosion and protection. With the development of industrial modernization, the requirements for the surface properties of various mechanical equipment and parts are getting higher and higher. Some parts working under conditions such as high speed, high temperature, heavy load, and corrosive media often cause the entire surface to corrode due to local corrosion. Parts are scrapped, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05C23F11/12
Inventor 方淳佘万能
Owner HAISO TECH
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