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Aqueous chrome-free dacromet coating material, preparation method and use method thereof

A water-based and coating technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of insufficient density and corrosion resistance of coatings, and achieve the effect of small impact, high hardness, and less organic matter

Active Publication Date: 2017-02-15
佛山市高明区(中国科学院)新材料产业研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing chrome-free dacromet coating is not dense enough and the corrosion resistance still needs to be improved, the present invention provides a water-based chrome-free dacromet coating with dense coating and good corrosion resistance

Method used

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  • Aqueous chrome-free dacromet coating material, preparation method and use method thereof
  • Aqueous chrome-free dacromet coating material, preparation method and use method thereof
  • Aqueous chrome-free dacromet coating material, preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 21g of zinc powder, 4g of aluminum powder, 17g of ethylene glycol, 4.5g of op-10, 24g of water, 0.2g of defoamer, stir mechanically, and disperse evenly to prepare component A for use; weigh permanganate Potassium 0.4g, titanium oxysulfate 0.3g, aluminum dihydrogen phosphate 10g, boric acid 6.5g, ammonium molybdate 0.2g, cerium nitrate 0.05g, water 40g, ultrasonically dissolved to make B component, stand-by; weigh γ- Glycidyl etheroxypropyltrimethoxysilane 19g, water 19g, methanol 3.5g, under the condition of 50°C water bath, magnetically stirred until colorless and transparent, then added dropwise 1.0g of 1mol / L dilute hydrochloric acid, sealed and hydrolyzed for 10 hours, prepared Component C, ready for use; weigh 15.0 g of nonionic polyurethane associative thickener and 3.0 g of white carbon black, stir evenly, and set aside.

[0027] The four components are mixed according to the mass ratio of 4:3.5:2.5:1. The specific preparation method: under the condition o...

Embodiment 2

[0031] Weigh 20.0g of zinc powder; 5.0g of aluminum powder; 15.0g of ethylene glycol; 5.0g of op-10; 25.0g of water; Take 0.5g of potassium permanganate, 0.3g of titanyl sulfate, 10.5g of aluminum dihydrogen phosphate, 6.5g of boric acid, 0.2g of ammonium molybdate, 0.05g of cerium nitrate, and 40g of water, and ultrasonically dissolve it to make component B for use ;Weigh 20g of γ-glycidyl etheroxypropyl trimethoxysilane, 20g of water, 4.5g of methanol, under the condition of 50°C water bath, stir magnetically until it is colorless and transparent, then add 1.5g of 1mol / L dilute hydrochloric acid dropwise, seal Hydrolyze for 8 hours to prepare component C, which is ready for use; weigh 15.0 g of nonionic polyurethane associative thickener and 2.5 g of white carbon black, stir evenly, and set aside.

[0032] The four components are mixed according to the mass ratio of 4:3.5:2.5:1. The specific preparation method: Under the condition of continuous stirring at 500rmp, component ...

Embodiment 3

[0036] Weigh 20.0g of zinc powder; 5.0g of aluminum powder; 16.0g of ethylene glycol; 5.5g of op-10; 23.0g of water; Take 0.5g of potassium permanganate, 0.35g of titanyl sulfate, 11g of aluminum dihydrogen phosphate, 6.0g of boric acid, 0.25g of ammonium molybdate, 0.05g of cerium nitrate, and 40g of water, and ultrasonically dissolve it to prepare component B for use; Weigh 22g of γ-glycidyl etheroxypropyl trimethoxysilane, 19g of water, and 6.0g of methanol, and stir it magnetically until it is colorless and transparent in a water bath at 50°C, then add 2.0g of 1mol / L dilute hydrochloric acid dropwise, seal and hydrolyze After 12 hours, component C was prepared and set aside; 15.0 g of nonionic polyurethane associative thickener and 3.0 g of white carbon black were weighed, stirred evenly, set aside.

[0037]The four components are mixed according to the mass ratio of 4:3.5:2.5:1. The specific preparation method: Under the condition of continuous stirring at 300rmp, compone...

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Abstract

The present invention discloses an aqueous chrome-free dacromet coating material and a preparation method thereof, and belongs to the technical field of metal anticorrosion. The technical scheme is that four components are separately prepared and are mixed according to a mass ratio of 4:3.5:2.5:1 so as to obtain the aqueous chrome-free dacromet coating material, wherein the component A preparation method comprises: mixing flaky zinc powder and aluminum powder, adding a dispersant, an organic solvent, water and a defoaming agent, stirring, and uniformly dispersing, the component B preparation method comprises: mixing potassium permanganate, titanyl sulfate, aluminium dihydrogen phosphate, boric acid, ammonium molybdate and water, and dissolving, the component C is an organosilicon hydrolyzate, and the component D is a thickener. According to the present invention, the prepared aqueous chrome-free dacromet coating material has characteristics of compact coating, high hardness and good corrosion resistance; the organic matter in the coating is less, such that the volatile matter has little effect on the environment; and the sintering temperature is low, and the energy source is saved.

Description

technical field [0001] The invention relates to a water-based chromium-free dacromet paint and a preparation method thereof, belonging to the technical field of metal anticorrosion. Background technique [0002] Indacromet Technology Contains Toxic and Carcinogenic Cr 6+ . In response to chromium pollution, countries have begun to take increasingly stringent measures. At present, developed countries have strictly prohibited Dacromet production and coating processing in their own country. Through overseas investment, the processing factories are transferred to countries with less strict pollution control, and then imported. In this case, my country has also adopted some restrictive measures. The "Administrative Measures for the Prevention and Control of Pollution by Electronic Information Products" stipulates that from July 1, 2006, all electronic information products sold in my country must not contain Cr 6+ Toxic and harmful substances, etc. However, since my country's ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06C09D5/10C09D7/12
Inventor 陈腾水李智文胡柱东
Owner 佛山市高明区(中国科学院)新材料产业研究院
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