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Surface treatment agent and zinc-plating material

A technology of surface treatment agent and raw material, applied in the direction of metal material coating process, etc., can solve the problems of decreased corrosion resistance of the film layer, non-compliance with environmental protection requirements, etc., and achieve the effect of excellent corrosion resistance

Inactive Publication Date: 2012-05-30
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defect that the corrosion resistance of the film layer obtained by the existing trivalent chromium passivating agent decreases at or after high temperature and does not meet the environmental protection requirements, the invention provides a trivalent chromium surface treatment agent and a plating zinc material

Method used

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  • Surface treatment agent and zinc-plating material

Examples

Experimental program
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Effect test

Embodiment 1

[0045] This embodiment is used to illustrate the surface treatment agent and galvanized material provided by the present invention.

[0046] With 50 grams of styrene-acrylic emulsion (purchased from Guangzhou Chaolong Chemical Technology Co., Ltd., the brand is xy-108b styrene-acrylic emulsion, solid content is 48% by weight, viscosity is 500-1000mPa·s), 40 grams of fluorocarbon emulsion (purchased From Beijing Shouchuang Nano Technology Co., Ltd., the brand is SKFT-I water-based fluorocarbon emulsion, solid content is 45% by weight, viscosity is 500-1000mPa s), 2 grams of trivalent chromium hydroxide, 120 grams of aluminum dihydrogen phosphate and 5 grams of boric acid were added to 500ml of water to dissolve, then added water to 1L, and mixed uniformly at 25°C to obtain surface treatment agent A1.

[0047] Apply 0.2 grams of the above-mentioned surface treatment agent A1 to the surface of a galvanized steel sheet (Panzhihua Steel and Vanadium Co., Ltd. of Panzhihua Iron and ...

Embodiment 2

[0049] This embodiment is used to illustrate the surface treatment agent and galvanized material provided by the present invention.

[0050] With 60 grams of styrene-acrylic emulsion (purchased from Guangzhou Chaolong Chemical Technology Co., Ltd., the brand is xy-108b styrene-acrylic emulsion, solid content is 48% by weight, viscosity is 500-1000mPa·s), 20 grams of fluorocarbon emulsion (purchased From Beijing Shouchuang Nano Technology Co., Ltd., the brand is SKFT-I water-based fluorocarbon emulsion, the solid content is 45% by weight, the viscosity is 500-1000mPa s), 1 gram of trivalent chromium hydroxide, 100 grams of aluminum dihydrogen phosphate and 3 grams of boric acid were added to 500ml of water to dissolve, then added water to 1L, and mixed uniformly at 25°C to obtain surface treatment agent A2.

[0051] Apply 1 gram of the above-mentioned surface treatment agent A2 to the surface of a galvanized steel sheet (Panzhihua Steel Vanadium Co., Ltd. of Panzhihua Iron and ...

Embodiment 3

[0053] This embodiment is used to illustrate the surface treatment agent and galvanized material provided by the present invention.

[0054] With 20 grams of styrene-acrylic emulsion (purchased from Guangzhou Chaolong Chemical Technology Co., Ltd., the brand is xy-108b styrene-acrylic emulsion, solid content is 48% by weight, viscosity is 500-1000mPa·s), 60 grams of fluorocarbon emulsion (purchased From Beijing Shouchuang Nano Technology Co., Ltd., the brand is SKFT-I water-based fluorocarbon emulsion, solid content is 45% by weight, viscosity is 500-1000mPa s), 3 grams of trivalent chromium hydroxide, 80 grams of aluminum dihydrogen phosphate Add 1 gram of boric acid to 500ml of water to dissolve, add water to 1L, and mix well at 25°C to obtain surface treatment agent A3.

[0055] Apply 1.5 grams of the above-mentioned surface treatment agent A3 to the surface of a galvanized steel sheet (Panzhihua Steel and Vanadium Co., Ltd. of Panzhihua Iron and Steel Group Co., Ltd., mode...

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Abstract

The invention provides a trivalent chromium surface treatment agent and a zinc-plating material. The surface treatment agent is obtained by evenly mixing a raw mix; the raw mix comprises a first organic film former, a second organic film former and water; the first organic film former is a styrene-acrylic emulsion and / or a silicone-acrylic emulsion; and the second organic film former is a fluorocarbon emulsion and / or fluoro-silicon emulsion. The trivalent chromium surface treatment agent is characterized in that the raw mix also comprises a trivalent chromium compound and phosphate. The zinc-plating material provided by the invention comprises a zinc-plating base material and a coating adhering to the zinc-plating base material, and is characterized in that the coating is a solid product of the surface treatment agent. The coating obtained by solidifying the surface treatment agent provided by the invention has excellent corrosion resistance at high temperature or under the condition of being treated at high temperature. Moreover, trivalent chromium in the coating cannot be converted into hexavalent chromium, and thereby, the environmental-protection requirement is completely met.

Description

technical field [0001] The invention relates to a surface treatment agent and a galvanized material. Background technique [0002] One of the main uses of galvanized materials such as galvanized steel sheets or steel coils is in the electrical manufacturing industry, such as air conditioners and computer cases. Galvanized materials are generally passivated prior to storage, transport or use. Passivation treatment generally includes contacting the passivation solution with the galvanized material, such as spraying the passivation solution onto the surface of the galvanized material. The passivation solution includes a passivation solution containing hexavalent chromium and a passivation solution without hexavalent chromium. liquid. [0003] On February 13, 2003, the European Parliament and the Council passed the "Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment", referred to as the RoHS Directive, which is the EU...

Claims

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Application Information

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IPC IPC(8): C23C22/05C23C22/68
Inventor 许哲峰梅东生程兴德陈永娄燕周一林张爱萍李国安
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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