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Copper and copper alloy dedicated metal surface treatment agent

A metal surface treatment and copper alloy technology, which is applied in the field of special metal surface treatment agents for copper and copper alloys, can solve the problems of increased corrosion current density and localized corrosion, and achieve slowing down of electrode reaction, improvement of protection, improvement of tensile strength and The effect of thermal stability

Inactive Publication Date: 2015-08-05
BENGBU TIMES ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the amount is insufficient, a complete oxide film cannot be formed, and the corrosion current density increases on the small metal surface that is not covered, which is likely to cause severe local corrosion

Method used

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Examples

Experimental program
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Embodiment 1

[0016] A special metal surface treatment agent for copper and copper alloy, which is composed of the following raw materials in parts by weight:

[0017] Mercaptobenzothiazole 3, ferrous sulfate 1.2, dimethylacetamide 0.2, polyvinyl alcohol 15, p-hydroxybenzoic acid 0.01, sericin 6, boric acid 0.07, yttrium nitrate hexahydrate 0.05, silane coupling agent KH-550 0.4 -1. Barium petroleum sulfonate 2, phytosterol 0.4, water 200, potassium perfluorobutane sulfonate 0.5, sodium bicarbonate 0.6.

[0018] A preparation method of a special metal surface treatment agent for copper and copper alloys, comprising the following steps:

[0019] (1) Mix potassium perfluorobutane sulfonate, sericin and p-hydroxybenzoic acid, stir evenly, add 40% of the above water weight, stir evenly, add silane coupling agent KH-550, yttrium nitrate hexahydrate, 1000 Stir and disperse for 20 minutes at rpm, add polyvinyl alcohol and boric acid, keep stirring at 70°C for 60 minutes, and obtain sericin emulsi...

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PUM

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Abstract

The invention discloses a copper and copper alloy dedicated metal surface treatment agent which is composed of the following raw materials, by weight, 2-3 parts of mercaptobenzothiazole, 0.8-1.2 parts of ferrous sulphate, 0.1-0.2 part of dimethyl acetamide, 10-15 parts of polyvinyl alcohol, 0.01-0.02 part of p-hydroxybenzoic acid, 4-6 parts of sericin, 0.07-0.1 part of boric acid, 0.05-0.1 part of yttrium nitrate hexahydrate, 0.4-1 part of a silane coupling agent KH-550, 2-3 parts of barium petroleum sulfonate, 0.3-0.4 part of phytosterol, 160-200 parts of water, 0.5-1 part of potassium perfluorobutanesulfonate and 0.6-1 part of sodium bicarbonate. According to the invention, water-soluble polymer polyvinyl alcohol and sericin are mixed, and then silanization treatment is carried out. After hydrolysis of silane, an adsorption type film can be formed on metal surface so as to isolate water molecules and oxygen molecules in the environment, thus having a protective effect. Through boric acid modification, tensile strength and heat stability of blend films can be enhanced.

Description

technical field [0001] The invention mainly relates to the field of metal surface treatment agents, in particular to a special metal surface treatment agent for copper and copper alloys. Background technique [0002] Metal surface treatment agent refers to the general term for various chemical agents for metal surface treatment. Metal surface treatment includes degreasing, rust removal, phosphating, antirust and other substrate pretreatments, which are prepared for metal coating technology and metal protection technology. The quality of substrate pretreatment has a great influence on subsequent coating preparation and metal use. The water-soluble rust inhibitor can be dissolved in water to form an aqueous solution, and the metal can prevent corrosion and rust after being treated with this aqueous solution. Their antirust effect can be divided into three categories. [0003] ①The metal and the antirust agent form an insoluble and dense oxide film, thus preventing the an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/52
Inventor 朱兴堂朱亮亮陈军彦
Owner BENGBU TIMES ELECTRONICS
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