Metal surface treating agent substituting for phosphorizing liquid as well as preparation method of metal surface treating agent

A technology of metal surface treatment and phosphating solution, which is applied in the direction of metal material coating process, etc., can solve the problems of difficulty in meeting the requirements of wastewater discharge standards, low chemical oxygen demand and biochemical oxygen demand, and high content of inorganic phosphorus in phosphating wastewater , to achieve the effect of easy promotion and implementation, strong adaptability, and less equipment

Inactive Publication Date: 2013-10-16
无锡苏惠信息技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main components of phosphating waste residue (that is, the sediment after phosphating treatment) are iron phosphate and zinc phosphate, so the content of inorganic phosphorus in phosphating wastewater is high, and the chemical oxygen demand and biochemical oxygen demand are relatively low, so it is treated by biochemical method , it is difficult to meet the discharge standard requirements of wastewater. In this way, a large amount of phosphating wastewater is discharged into rivers and lakes, which increases the nutrient load of water bodies and causes eutrophication of water bodies (especially closed water bodies), so that eutrophication pollution has become the current major environmental issues

Method used

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  • Metal surface treating agent substituting for phosphorizing liquid as well as preparation method of metal surface treating agent
  • Metal surface treating agent substituting for phosphorizing liquid as well as preparation method of metal surface treating agent
  • Metal surface treating agent substituting for phosphorizing liquid as well as preparation method of metal surface treating agent

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Experimental program
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Effect test

Embodiment 1

[0034] Add 55 parts by weight of aqueous fluorocarbon emulsion (solid content 48%) and 9 parts by weight of epoxy acrylate resin (solid content 90%) to 65 parts by weight of perfluoroalkyl acrylate (solid content 90%) , 13 parts by weight of water, and fully stirred and dissolved, then added the suspension, and stirred evenly, to obtain the metal surface treatment agent that replaces the phosphating solution, and the preparation method of the suspension is: 1.3 parts by weight of polyvinylpyrrolidone is added to 28 parts by weight of absolute ethanol and fully stirred, then respectively added 9 parts by weight of micron or nanoscale zinc powder, 6 parts by weight of micron or nanoscale glass flakes, fully stirred, Sonicate for an additional 40 minutes to form a suspension.

[0035] The treatment agent prepared by the above-mentioned method is easy to store. It only needs to be stored in a place above 5°C, avoiding direct sunlight, ventilated, cool and dry, and sealed for stora...

Embodiment 2

[0045] Add 55 parts by weight of aqueous fluorocarbon emulsion (solid content 48%) and 9 parts by weight of epoxy acrylate resin (solid content 95%) to 65 parts by weight of perfluoroalkyl acrylate (solid content 95%) , 13 parts by weight of water, and after fully stirring and dissolving, the metal surface treatment agent for replacing the phosphating solution can be obtained.

[0046] The treatment agent prepared by the above-mentioned method is easy to store. It only needs to be stored in a place above 5°C, away from direct sunlight, in a cool and dry place with ventilation, and it will not deteriorate for one year in sealed storage.

[0047] Use the prepared treatment agent and adopt the traditional method of dipping to form a layer of good antirust film on the surface of metal workpieces (such as the metal threaded cover plate of the filter) to complete the antirust treatment of metal workpieces. The dipping temperature is 30 ℃, the immersion time is 60 seconds.

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Abstract

The invention relates to a metal surface treating agent substituting for phosphorizing liquid as well as a preparation method and an application of the metal surface treating agent. The metal surface treating agent contains 60-70 parts by weight of perfluoroalkyl acrylate (the solid content is more than or equal to 90%), 50-60 parts by weight of water-borne fluorine carbon (the solid content is 48%), 8-10 parts by weight of epoxy acrylate resin (the solid content is more than or equal to 90%) and 10-15 parts by weight of water and also contains improved components such as 8-10 parts by weight of micron order or nanoscale zinc powder, 5-8 parts by weight of micron order or nanoscale glass flake, 1-1.5 parts by weight of polyvinylpyrrolidone and 25-30 parts by weight of absolute ethyl alcohol. The metal surface treating agent disclosed by the invention has the advantages of economic composition and good antirust effect. The preparation method is a mixing stirring method. The process is simple, and less equipment is used. The application is as follows: an antirust membrane is formed on the surface of a metal workpiece by adopting a dipping method, wherein the dipping temperature is 20-30 DEG C, and the dipping time is 30-60 seconds. The workpiece is conductive to improving the quality and market competitiveness of related products.

Description

technical field [0001] The present invention relates to a kind of treatment agent, more specifically, the present invention relates to a kind of metal surface treatment agent that replaces phosphating solution, meanwhile, the present invention also relates to a kind of preparation method of said metal surface treatment agent that replaces phosphating solution and uses. technical background [0002] At present, for the anti-corrosion of ferrous metals, three major anti-corrosion treatment technologies are generally used at home and abroad: 1. Galvanized or lead-plated; 2. Pickling, phosphating, passivation, Dacro (an anti-corrosion technology born in the United States) etc.; 3. Pickling, phosphating, passivation, electrophoresis or powder spraying. [0003] The process steps of phosphating treatment are complicated, the production cost is high, and the most critical thing is that it will cause relatively serious environmental pollution. Phosphating treatment includes ten pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/34
Inventor 吴昊邹宜哲邹旻珊张冬青
Owner 无锡苏惠信息技术服务有限公司
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