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High-temperature metal passivation solution and preparation method thereof

A technology of metal passivation and high temperature resistance, applied in the direction of metal material coating process, etc., can solve the problems of inaccurate effect and no high temperature resistance, and achieve a simple preparation method, good corrosion resistance, and good high temperature resistance. Effect

Inactive Publication Date: 2015-02-04
WUXI EPIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although its composition does not contain chromium, no specific test data has been given for high temperature resistance, and its effect is not exact

Method used

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  • High-temperature metal passivation solution and preparation method thereof
  • High-temperature metal passivation solution and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high temperature resistant metal passivation solution contains the following components: 15g / L sodium phosphate, 7g / L phenol ether phosphate, 2g / L ammonium vanadate, 2g / L ammonium polyvanadate, 2g / L ammonium molybdenum phosphate, 5g / L L sodium molybdophosphate, 5g / L zirconyl chloride, 12g / L sodium silicate, 5g / L TX-100, 50g / L phytic acid.

[0024] A preparation method of high temperature resistant metal passivation solution, comprising the following steps:

[0025] a. Weigh the components according to the measurement, first add sodium phosphate, ammonium vanadate, ammonium polyvanadate, ammonium molybdenum phosphate, sodium molybdenum phosphate, and sodium silicate into deionized water for stirring, and control the stirring speed to 50 rpm , until completely dissolved;

[0026] b. Add zirconyl chloride, phenol ether phosphate and phytic acid to the solution obtained in step a, stir and heat, control the temperature at 70° C., and the reaction time is 2 hours, and adj...

Embodiment 2

[0029] A high temperature resistant metal passivation solution contains the following components: 22g / L sodium phosphate, 22g / L phenol ether phosphate, 20g / L ammonium vanadate, 10g / L ammonium polyvanadate, 14g / L ammonium molybdenum phosphate, 15g / L L sodium molybdophosphate, 15g / L zirconyl chloride, 25g / L sodium silicate, 12g / LTX-100, 220g / L phytic acid.

[0030] A preparation method of high temperature resistant metal passivation solution, comprising the following steps:

[0031] a. Weigh the components according to the measurement, first add sodium phosphate, ammonium vanadate, ammonium polyvanadate, ammonium molybdophosphate, sodium molybdophosphate, and sodium silicate into deionized water for stirring, and control the stirring speed to 55 rpm , until completely dissolved;

[0032] b. Add zirconyl chloride, phenol ether phosphate and phytic acid to the solution obtained in step a, stir and heat, control the temperature at 80° C., and the reaction time is 3 hours, and adju...

Embodiment 3

[0035] A high temperature resistant metal passivation solution contains the following components: 18g / L sodium phosphate, 10g / L phenol ether phosphate, 5g / L ammonium vanadate, 5g / L ammonium polyvanadate, 5g / L ammonium molybdenum phosphate, 7g / L L sodium molybdophosphate, 7g / L zirconyl chloride, 18g / L sodium silicate, 8g / L TX-100, 100g / L phytic acid.

[0036] A preparation method of high temperature resistant metal passivation solution, comprising the following steps:

[0037] a. Weigh the components according to the measurement, first add sodium phosphate, ammonium vanadate, ammonium polyvanadate, ammonium molybdophosphate, sodium molybdophosphate, and sodium silicate into deionized water for stirring, and control the stirring speed to 65 rpm , until completely dissolved;

[0038] b. Add zirconium oxychloride, phenol ether phosphate and phytic acid to the solution obtained in step a, stir and heat, control the temperature at 100° C., and the reaction time is 4 hours, and adju...

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Abstract

The invention discloses a high-temperature metal passivation solution and a preparation method thereof. The passivation solution is prepared from the following components: 15-22g / L sodium phosphate, 7-22g / L phenolic ether phosphate, 2-20g / L ammonium vanadate, 2-10g / L ammonium polyorthovanadate, 2-14g / L molybdenum ammonium phosphate, 5-15g / L sodium ammonium phosphate, 5-15g / L zirconium oxidechloride, 12-25g / L sodium silicate, 5-12g / L TX-100 and 50-220g / L phytic acid. The preparation method comprises the following steps: a, weighing the above components according to the specified amount; b, stirring and heating; and c, finally adding TX-100 and uniformly stirring to obtain the high-temperature metal passivation solution. A metal plate which is passivated by using the high-temperature metal passivation solution provided by the invention has good corrosion resistance and high-temperature resistance.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a high-temperature-resistant metal passivation solution and a preparation method thereof. Background technique [0002] After metal plating is exposed to the air during storage and transportation or during use, due to changes in air humidity and temperature, condensation will form on the surface of the coating, resulting in rust or discoloration of the metal, affecting the anti-rust performance of the product's appearance. In order to prevent the coating For this kind of rust, after the metal surface is coated, it is necessary to passivate the surface coating. [0003] The traditional passivation treatment usually uses hexavalent or trivalent chromate to form a passivation film on the surface of the coating. This film has good isolation performance and self-healing function, has good anti-corrosion effect, and has a simple and fast process. , low cost, passivatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/42
CPCC23C22/42
Inventor 尤为
Owner WUXI EPIC TECH