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Modified silanized metal surface pretreatment agent containing fatty alcohol-polyoxyethylene ether and preparation method thereof

A technology of alcohol polyoxyethylene ether and treatment agent, applied in the field of modified silanized metal surface pretreatment agent and its preparation, can solve the problem of lack of "self-healing" performance, weak corrosion resistance, and poor self-repairing performance and other problems, to achieve the effect of no ash, strong corrosion resistance and strong adhesion

Inactive Publication Date: 2013-12-18
ANHUI PROVINCE SUZHOU CITY LONGHUA MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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, 10 modified coupling agent, 14 propanol, 25 gamma-chloropropylmethyldimethoxysilane, 25 gamma-chloropropyltriethoxysilane 35. Dicumyl peroxide 1.5, sodium perfluorooctanoate 0.0024, dioctyltin dilaurate 0.4, epoxy resin emulsion 5, sodium carboxymethyl cellulose 2, Span 80 0.6, fatty alcohol polyoxyethylene ether 0.4, 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) First add γ-chloropropylmethyldimethoxysilane into the stirring tank according to the proportion of the formula, then add dicumyl peroxide, stir at 300-400rpm for 3-4 minutes, then add γ-Chloropropyltriethoxysilane, after stirring at a spee...

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Abstract

The invention discloses a modified silanized metal surface pretreatment agent containing fatty alcohol-polyoxyethylene ether. 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 gamma-chloropropyl triethoxysilane, 20-30 parts of gamma-chloropropyl methyldimethoxysilane, 1-2 parts of dicumyl peroxide, 0.002-0.003 part of perfluorooctyl sodium sulfonate, 0.3-0.5 part of dioctyldilauryltin, 4-6 parts of epoxy resin emulsion, 2-3 parts of sodium carboxymethyl cellulose, 0.4-1.0 part of Span80, 0.2-0.6 part of fatty alcohol-polyoxyethylene ether, 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 fatty alcohol polyoxyethylene ether 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 ...

Claims

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Application Information

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IPC IPC(8): C23C22/34
Inventor 张德华杨家坤陈琢
Owner ANHUI PROVINCE SUZHOU CITY LONGHUA MACHINERY MFG
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