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Magnesium alloy non-chromium dacro solution paint and its preparation method

A magnesium alloy and coating technology, applied in the direction of anti-corrosion coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of adhesion, salt spray resistance, heat resistance, acid and alkali resistance, etc., to achieve strong corrosion resistance, coating The effect of thin film and strong adhesion

Inactive Publication Date: 2006-06-14
长春吉大化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention discloses a chrome-free dacromet solution coating for magnesium alloys, which solves the problems of adhesion, salt spray resistance, heat and humidity resistance, acid resistance and resistance to magnesium alloy parts existing in the existing dacromet solution coatings and other coatings. poor alkalinity problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 20-45 kg of acrylic resin; 20-35 kg of amino resin; 10-20 kg of epoxy resin, heat up the proportional resin in the reaction kettle while stirring, the humidity is 60°C-180°C, and the number of rotations is 120-800 rpm After heating up to 60°C-180°C, add 0.5-5 kg ​​of hydroxypolysiloxane, stir at constant temperature for 4-8 hours, let stand for 12-24 hours, adjust the pH value to 7.5-12, and make a composite resin.

Embodiment 2

[0030] Take 10-30 kg of butyral resin; 30-50 kg of formaldehyde resin; 800 rpm, after heating up to 60°C-180°C, add 0.5-5 kg ​​of silicone vinyl triethoxysilane, stir at constant temperature for 4-8 hours, let stand for 12-24 hours, adjust the pH value to 7.5-12 , made of composite resin.

Embodiment 3

[0032] Take 10-40 kg of polyester resin; 10-30 kg of phenolic resin; 10-40 kg of epoxy resin, heat up the proportional resin in the reaction kettle while stirring, the humidity is 60°C-180°C, and the number of revolutions is 120-800 Turn per minute, after heating up to 60°C-180°C, add 0.5-5 kg ​​of organic silicon, stir at constant temperature for 4-8 hours, let stand for 12-24 hours, adjust the pH value to 7.5-12, and make a composite resin.

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PUM

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Abstract

The present invention discloses a magnesium alloy chrome-free dyclo solution coating and its production method. It is characterized by that the organic silicon and nano powder body undergone the process of nano dispersing liquor treatment are dispersed in the resin made up by using several resins through the process of polymerization and cross-linking reaction to make modification, and mixed with zinc powder and aluminium powder so as to obtain the invented acid-resistant, alkali-resistant, salt fog resistant, impact-resistant and corrosion-resistant magnesium alloy chrome-free dyclo solution coating.

Description

Technical field: [0001] The invention provides a magnesium alloy chromium-free dacromet solution coating, and also discloses its production method, which belongs to the technical field of metal surface anticorrosion coatings. Background technique: [0002] The dacromet that the present invention relates to is a kind of metal surface anti-rust treatment method successfully developed by American ocean company in 1972. Since the 1960s, Dacromet coating technology known as "green electroplating" came out in the United States. It has a series of advantages such as construction on materials, coating can withstand high temperature of 300 ℃, etc., and it has developed rapidly in the world. [0003] Usually the traditional dacromet solution paint coating contains Cr 6+ , in use Cr 6+ Dissolution reduces the corrosion resistance of the coating and pollutes the environment. The water resistance, heat and humidity resistance, and acid rain resistance of the Dacromet coating are not i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00B05D7/14C09D5/08C09D161/00C09D163/00C09D167/00C09D175/00
Inventor 孟中徐关庆
Owner 长春吉大化学有限公司
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