Water-soluble metal surface sealing protection liquid as well as preparation method and application thereof

A metal surface and protective liquid technology, applied in the direction of metal material coating process, etc., can solve the problems of unstable matching performance of middle paint or top paint, large thickness of latex film, and insufficient performance, and achieve low porosity and good performance. The effect of strong anti-sulfur and corrosion resistance

Active Publication Date: 2021-03-19
HUNAN JINYU ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latex film (100-150μm) formed by it has a large thickness. As the bottom layer of the coating, its performance is not excellent enough, and its matching performance with the intermediate coating or top coating is unstable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A water-soluble metal surface sealing protection solution is made of the following raw materials in weight percentage:

[0043] Sulfamic acid 13.6%,

[0044] Benzoic acid 8.6%,

[0045] Glacial acetic acid 6.7%,

[0046] Dodecanedibasic acid 6.8%,

[0047] N,N-Diethylethanolamine 22.0%,

[0048] Nano silica emulsion 6.3%,

[0049] Sodium dodecyl sulfonate 5.1%,

[0050] Lactic acid 3.6%,

[0051] Glycerin 6.6%,

[0052] water balance.

Embodiment 2

[0054] A water-soluble metal surface sealing protection solution is made of the following raw materials in weight percentage:

[0055] Sulfamic acid 13%,

[0056] Benzoic acid 9%,

[0057] Glacial acetic acid 6%,

[0058] Dodecanedioic acid 6%,

[0059] N,N-Diethylethanolamine 23%,

[0060] Nano silica emulsion 6.5%,

[0061] Sodium dodecyl sulfonate 5.6%,

[0062] Lactic acid 3.9%,

[0063] Glycerin 7%,

[0064] water balance.

Embodiment 3

[0066] A water-soluble metal surface sealing protection solution is made of the following raw materials in weight percentage:

[0067] Sulfamic acid 13.7%,

[0068] Benzoic acid 8%,

[0069] Glacial acetic acid 7%,

[0070] Dodecanedioic acid 5%,

[0071] N,N-Diethylethanolamine 21%,

[0072] Nano silica emulsion 7%,

[0073] Sodium dodecyl sulfonate 6%,

[0074] Lactic acid 4%,

[0075] Glycerin 7%,

[0076] water balance.

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PUM

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Abstract

A water-soluble metal surface sealing protection liquid is prepared from the following raw materials in percentage by weight: 10-15% of sulfamic acid, 7-10% of benzoic acid, 5-10% of glacial acetic acid, 5-10% of dodecanedioic acid, 15-25% of N, Ndiethylethanolamine, 5-10% of nano silicon dioxide emulsion, 3-7% of sodium dodecyl sulfate, 3-5% of lactic acid, 5-7% of glycerol and the balance of water. The water-soluble metal surface sealing protection liquid is widely applied to decorative coatings and anticorrosive coatings on hardware, communication equipment, instruments, automobile and motorcycle accessories, household appliances and other products, and the field of discoloration prevention of steel, zinc alloy and copper.

Description

technical field [0001] The invention belongs to the field of metal surface pretreatment, and in particular relates to a water-soluble metal surface sealing protection solution, a preparation method and an application. Background technique [0002] For a long time, the passivation treatment of metal surfaces has generally used chromate passivation solution containing hexavalent chromium. The passivation film has good isolation performance and self-healing ability, and has good corrosion resistance. However, hexavalent chromium is highly toxic and carcinogenic, and its environmental pollution and harm to humans have received widespread attention. Many countries have begun to restrict or prohibit the use of chromate passivation treatment, such as the European Union in 2003. Decree No. 2002 / 95 / EC was promulgated on March 13, referred to as the ROHS Directive, the "Clean Production Promotion Law" implemented in my country on January 1, 2003 and the Chinese version of the "Clean Pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/48
CPCC23C22/48
Inventor 桂成方桂林刘春花
Owner HUNAN JINYU ENVIRONMENTAL PROTECTION TECH CO LTD
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