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Liquid surface conditioning agent capable of improving film-forming property of phosphating film and preparation method thereof

A technology of liquid surface and film-forming performance, applied in the direction of metal material coating process, etc., can solve the problems of difficult storage of titanium colloid, rapid decline of phosphating tank, and difficulty in forming phosphating film, etc., so as to shorten the phosphating time and reduce the Phosphating temperature, favorable for uniform growth

Active Publication Date: 2018-04-20
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing surface adjustments use titanium-containing colloids, which require strict control of total alkalinity, temperature, pH value, titanium content, and total alkalinity. If the pH value is too high, the phosphating tank will drop too quickly; if the temperature is too high, It is easy to cause surface dryness between processes; if the titanium content is too low, the surface adjustment effect is not good; if the titanium content is too high, the phosphating film is not easy to form, and the film weight is not up to the standard; in addition, the titanium colloid is not easy to store

Method used

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  • Liquid surface conditioning agent capable of improving film-forming property of phosphating film and preparation method thereof

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Embodiment 1

[0026] The present invention can improve the preparation method of the liquid surface conditioner of phosphating film film-forming performance, first dissolve 3% zinc nitrate and 1% calcium nitrate in 25% water, then dissolve 8% disodium hydrogen phosphate in 15% % water, then mix the two solutions, then add 2% polyvinyl alcohol, stir well to get the colloidal active ingredient, then add 3% fatty alcohol polyoxyethylene ether sodium sulfate and 2% coke to the colloidal salt Trisodium phosphate is finally added with 41% water to form a uniform mixture, which is the liquid surface conditioner of the present invention; during the synthesis process, all operations are at normal temperature and constant stirring is required.

[0027] The weight percent of each component of the above-mentioned liquid surface conditioner is: 3% of zinc nitrate, 1% of calcium nitrate, 8% of disodium hydrogen phosphate, 2% of polyvinyl alcohol, 3% of fatty alcohol polyoxyethylene ether sodium sulfate, t...

Embodiment 2

[0029] The present invention can improve the preparation method of the liquid surface conditioner of film-forming performance of phosphating film, first dissolve 9% zinc nitrate and 5% calcium nitrate in 15% water, then dissolve 15% disodium hydrogen phosphate in 10 % water, then mix the two solutions, then add 4% polyvinyl alcohol, stir well to get the colloidal active ingredient, then add 7% fatty alcohol polyoxyethylene ether sodium sulfate and 5% coke to the colloidal salt Trisodium phosphate is finally added with 30% water to form a homogeneous mixture, which is the liquid surface regulator of the present invention; during the synthesis process, all operations are at normal temperature and continuous stirring is required.

[0030] The weight percent of each component of the above-mentioned liquid surface conditioner is: zinc nitrate 9%, calcium nitrate 5%, disodium hydrogen phosphate 15%, polyvinyl alcohol 4%, fatty alcohol polyoxyethylene ether sodium sulfate 7%, pyrophos...

Embodiment 3

[0032] The present invention can improve the preparation method of the liquid surface conditioner of film-forming performance of phosphating film, first dissolve 6% zinc nitrate and 3% calcium nitrate in 10% water, then dissolve 12% disodium hydrogen phosphate in 20 % water, then mix the two solutions, then add 3% polyvinyl alcohol, stir well to get the colloidal active ingredient, then add 5% fatty alcohol polyoxyethylene ether sodium sulfate and 4% coke to the colloidal salt Trisodium phosphate is finally added with 37% water to form a uniform mixture, which is the liquid surface conditioner of the present invention; during the synthesis process, all operations are at normal temperature and constant stirring is required.

[0033] The weight percent of each component of the above-mentioned liquid surface conditioner is: zinc nitrate 6%, calcium nitrate 3%, disodium hydrogen phosphate 12%, polyvinyl alcohol 3%, fatty alcohol polyoxyethylene ether sodium sulfate 5%, pyrophosphat...

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Abstract

The invention discloses a liquid surface conditioning agent capable of improving the film-forming property of a phosphating film and a preparation method of the liquid surface conditioning agent capable of improving the film-forming property of the phosphating film. The liquid surface conditioning agent comprises the components, by weight, of 3%-9% of zinc nitrate, 1%-5% of calcium nitrate, 8%-15%of disodium hydrogen phosphate, 2%-4% of polyvinyl alcohol, 3%-7% of sodium alcohol ether sulphate, 2%-5% of trisodium pyrophosphate and 55%-81% of deionized water. The liquid surface conditioning agent is especially suitable for surface pretreatment of steel, aluminum and zinc before phosphating of zinc-calcium series and high in universality; crystallization active points in phosphating can beincreased, the grain size and binding force of the phosphating film are improved significantly, uniform growth of the phosphating film is facilitated, meanwhile, the phosphating temperature can be decreased, the phosphating time is shortened, the appearance quality of the phosphating film is improved, and corrosion resistance and abrasion resistance after phosphating are improved; and the preparation condition is gentle, and repeatability is high.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and is applicable to the surface adjustment of zinc-calcium phosphating-treated iron and steel, galvanized and galvanized alloys, and aluminum alloys before phosphate film treatment, and specifically refers to a method that can improve the formation of phosphating films. Performance liquid surface conditioner and preparation method thereof. Background technique [0002] Surface adjustment technology refers to a treatment method that treats the surface of the workpiece with a special solution before phosphating, so that the surface of the workpiece can obtain favorable conditions for phosphating, so as to accelerate phosphating and improve the film quality. The colloid acts as the crystal nucleus for the growth of the phosphating film on the metal surface, making the phosphating film fine and uniform, and improving the efficiency and success rate of phosphating treatment. [0003] Most ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/78
CPCC23C22/78
Inventor 马颖庞涛彭浩黄先球郎丰军宋建红程鹏
Owner 武汉钢铁有限公司
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