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Organic magnesium-enriched alloy coating material and preparation method thereof

A coating and organic technology, applied in the field of magnesium-rich alloy coatings, can solve the problems of short protection time and easy failure, and achieve the effect of excellent corrosion resistance

Inactive Publication Date: 2014-03-05
王贵 +1
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Problems solved by technology

[0003] The invention aims at the short protection time and easy failure of magnesium-rich coatings in salt spray environments such as high humidity and high salinity. In order to prolong the corrosion resistance of magnesium-based coatings in salt spray environments, AZ91D magnesium alloy is used as filler to prepare An organic rich AZ91D coating was developed to improve the corrosion resistance of the coating in salt spray environment

Method used

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  • Organic magnesium-enriched alloy coating material and preparation method thereof
  • Organic magnesium-enriched alloy coating material and preparation method thereof
  • Organic magnesium-enriched alloy coating material and preparation method thereof

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Embodiment Construction

[0015] The filler PVC values ​​of the organic coatings are respectively 35%, 50%, and 65%. In addition, under the condition of 50% PVC, take pure magnesium powder of equal mass as the filler, and do a comparative experiment. Table 1 is the ingredient list of each component of the organic coating under different pigment volume concentration PVC, and the ratio of each component is shown in Table 1 below.

[0016] Table 1 The ingredient list of different pigment volume concentrations.

[0017]

[0018] Table 2 shows the salt spray resistance time of organic coatings under different volume concentration conditions. It can be seen from Table 2 that after different time salt spray tests, the salt spray resistance time of PVC50% is the longest, reaching 960h. The PVC35% and PVC65% coatings are not as good as PVC50% coatings due to the addition of less or more AZ91D.

[0019] Table 2 Salt spray resistance time of coatings with different volume concentrations.

[0020]

[0...

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Abstract

The invention relates to an organic magnesium-enriched alloy coating material and a preparation method thereof, belonging to the field of cathode protection coating materials. The organic magnesium-enriched alloy coating material is used for solving the problem that the protection time of magnesium-enriched coating materials is short due to high activity. According to the method, filler is AZ91D which is used for replacing high-activity pure magnesium, and then, the magnesium-enriched alloy coating material is obtained. The organic magnesium-enriched alloy coating material has a long-acting cathode protection effect, and the protection time is prolonged under the condition that the corrosion resistance is not lowered.

Description

technical field [0001] The invention relates to a magnesium-rich alloy paint based on the principle of cathodic protection, which is especially suitable for active metal materials such as aluminum materials. Background technique [0002] Magnesium-rich paint has been proven to be a long-lasting protective paint for aluminum alloys, with excellent corrosion resistance, non-toxic and environmentally friendly. However, due to the use of pure magnesium particles as fillers in paints, pure magnesium particles are active in chemical properties and have a high tendency to self-dissolution, resulting in short cathodic protection time and limited protective life of paints. As described in the patent document CN101885940A, the maximum salt spray resistance time of the magnesium-rich coating is only 504 hours. [0003] The invention aims at the short protection time and easy failure of magnesium-rich coatings in salt spray environments such as high humidity and high salinity. In order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/10
Inventor 王贵赵娟黄即张鹏
Owner 王贵
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