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Modified silanized metal surface pretreatment agent containing sodium carboxymethyl cellulose and preparation method thereof

A technology of sodium carboxymethyl cellulose and treatment agent, which is applied in the field of modified silanized metal surface pretreatment agent and its preparation, can solve the problem of lack of "self-healing" performance, poor self-repairing performance, and poor corrosion resistance. Strong and other problems, to achieve the effect of no ash, strong adhesion, strong corrosion resistance

Inactive Publication Date: 2013-12-18
ANHUI PROVINCE SUZHOU CITY LONGHUA MACHINERY MFG
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] The silane treatment of metal surfaces has broad application prospects, but the silane film formed by the existing technology has defects such as weak corrosion resistance, uneven film formation, no "self-repair" performance or poor "self-repair" performance, which limits its development

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0022] Weigh raw materials (kg) according to the following weight: 100 deionized water, 12 modified coupling agents, 14 propanol, 25 silane coupling agents KH-560, 35 silane coupling agents KH-171, dicumyl peroxide 1.5, sodium perfluorooctanoate 0.0015, tree ash 0.4, polyvinyl acetate emulsion 5, sodium carboxymethylcellulose 2, phenylethylphenylpropylphenol polyoxyethylene ether 0.6, sorbitan fatty acid ester 0.5, lanthanum acetate 0.007, Phytic acid 0.25,

[0023] Preparation:

[0024] (1) Preparation of modified coupling agent

[0025] Add water-soluble nano-scale silica sol to 4-5% nano-zinc powder, 3-5% iron oxide, 4-6% 2-aminoethylheptadecenyl imidazoline, mix and heat to 95-115°C, 20-30 After a few minutes, it can be cooled;

[0026] (2) Add the silane coupling agent KH-560 first according to the proportion of the formula in the stirring tank, then add dicumyl peroxide, stir at a speed of 300-400rpm for 3-4 minutes, then add the silane coupling agent KH -171, aft...

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Abstract

The invention discloses a modified silanized metal surface pretreatment agent containing sodium carboxymethyl cellulose. The pretreatment agent is prepared from the following raw materials in parts by weight: 100 parts of deionized water, 10-15 parts of modified coupling agent, 10-15 parts of propyl alcohol, 30-40 parts of silane coupling agent KH-171, 20-30 parts of silane coupling agent KH-560, 0.001-0.003 part of perfluorooctyl sodium sulfonate, 0.3-0.5 part of wood ash, 4-6 parts of polyvinyl acetate emulsion, 2-3 parts of sodium carboxymethyl cellulose, 0.4-1.0 part of phenylethyl phenylpropyl phenol polyoxyethylene ether, 0.2-0.8 part of sorbitan fatty acid ester, 0.005-0.01 part of lanthanum acetate and 0.1-0.3 part of phytic acid. A final product is obtained by modifying the coupling agent, compounding, adding auxiliaries and carrying out distribution, mixing and reaction. The modified silanized surface pretreatment agent has the characteristics of no toxicity, environment friendliness, convenience in use, compact and uniform silane film, strong adhesion and good corrosion resistance.

Description

technical field [0001] The invention relates to metal surface treatment agent technology, in particular to a modified silylated metal surface pretreatment agent containing sodium carboxymethyl cellulose and a preparation method thereof. Background technique [0002] Corrosion of metal materials occurs around us every moment. According to statistics, about 10% of metal materials are corroded and cannot be recycled every year. This not only causes a huge waste of metal resources, but also poses a serious threat to normal production and personal safety. Surface treatment of metal materials is a commonly used anti-corrosion method. Method, the main method currently used for metal coating pretreatment is phosphating method. However, the traditional metal surface treatment methods have problems such as pollution to the environment due to the presence of toxic and harmful substances, and are no longer suitable for the increasingly high environmental requirements of human socie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D131/04C09D5/08C09D7/12
Inventor 杨家坤张德华王爱伟
Owner ANHUI PROVINCE SUZHOU CITY LONGHUA MACHINERY MFG
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