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Preparation method for self-cleaning anti-corrosive coating on magnesium alloy surface

A technology for corrosion coating and magnesium alloy, which is applied in the field of preparation of self-healing anti-corrosion coating on the surface of magnesium alloy, and achieves the effects of reduced dosage, good adaptability and simple preparation method

Inactive Publication Date: 2018-01-09
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regarding the preparation of ZrO by precipitation 2 Mesoporous materials and pore filling corrosion inhibitors are dispersed in epoxy resin glue and coated on the surface of magnesium alloys to achieve coating protection and intelligent release of corrosion inhibitors.

Method used

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  • Preparation method for self-cleaning anti-corrosive coating on magnesium alloy surface
  • Preparation method for self-cleaning anti-corrosive coating on magnesium alloy surface
  • Preparation method for self-cleaning anti-corrosive coating on magnesium alloy surface

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The first step, the preparation of mesoporous zirconia support: 11g ZrOCl 2 ·8H 2 Dissolve O solid in 40mL distilled water with a concentration of 1.0mol / L; preparation of CTAB solution: dissolve 0.13g CTAB in 40mL distilled water with a concentration of 0.01mol / L; prepare an ammonia solution with a concentration of 1.0mol / L ; Then mix the zirconium oxychloride and CTAB solution and stir, the temperature is not higher than 50°C; add the prepared ammonia solution dropwise to the mixed solution of zirconium oxychloride and CTAB through the dropping funnel; adjust the pH=9.5, drop After heating the ammonia solution to above 70°C, white flocculent precipitates will appear in the solution. After complete precipitation, separate the precipitates with a centrifuge; place the obtained precipitates in a beaker and dry them at 110°C for 10 hours. After being powdered, it was calcined in a muffle furnace at 500°C for 4 hours to prepare a sample for use.

[0040] The second step,...

Embodiment 2

[0044] The first step, the preparation of mesoporous zirconia support: 11g ZrOCl 2 ·8H 2 Dissolve O solid in 40mL distilled water with a concentration of 1.0mol / L; preparation of CTAB solution: dissolve 0.13g CTAB in 40mL distilled water with a concentration of 0.01mol / L; prepare an ammonia solution with a concentration of 1.0mol / L ; Then mix the zirconium oxychloride and CTAB solution and stir, the temperature is not higher than 50°C; add the prepared ammonia solution dropwise to the mixed solution of zirconium oxychloride and CTAB through the dropping funnel; adjust the pH=9.5, drop After heating the ammonia solution to above 70°C, white flocculent precipitates will appear in the solution. After complete precipitation, separate the precipitates with a centrifuge; place the obtained precipitates in a beaker and dry them at 110°C for 10 hours. After being powdered, it was calcined in a muffle furnace at 500°C for 4 hours to prepare a sample for use.

[0045] The second step,...

Embodiment 3

[0049] The first step, the preparation of mesoporous zirconia support: 11g ZrOCl 2 ·8H 2 Dissolve O solid in 40mL distilled water with a concentration of 1.0mol / L; preparation of CTAB solution: dissolve 0.13g CTAB in 40mL distilled water with a concentration of 0.01mol / L; prepare an ammonia solution with a concentration of 1.0mol / L ; Then mix the zirconium oxychloride and CTAB solution and stir, the temperature is not higher than 50°C; add the prepared ammonia solution dropwise to the mixed solution of zirconium oxychloride and CTAB through the dropping funnel; adjust the pH=9.5, drop After heating the ammonia solution to above 70°C, white flocculent precipitates will appear in the solution. After complete precipitation, separate the precipitates with a centrifuge; place the obtained precipitates in a beaker and dry them at 110°C for 10 hours. After being powdered, it was calcined in a muffle furnace at 500°C for 4 hours to prepare a sample for use.

[0050] The second step,...

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Abstract

The invention provides a preparation method for a self-cleaning anti-corrosive coating on a magnesium alloy surface. The preparation method is characterized in that a corrosion inhibitor is loaded onto a ZrO2 carrier with a mesoporous structure, the ZrO2 carrier is mixed with an epoxy resin glue solution, at last, the surface of a magnesium alloy matrix is coated with the mixed glue solution, andthe corrosion inhibitor is one or more of benzotriazole, hexamethylenetetramine, 2-mercaptobenzothiazole and sodium molybdate. ZrO2 loaded with the corrosion inhibitor is mixed with the epoxy resin glue solution, the surface of the magnesium alloy matrix is coated with the mixture, and room-temperature curing is performed to obtain a corrosion inhibitor-ZrO2 / epoxy resin coating. The novel coatinghas the functions of corrosion resistance and self-repairing, is environmentally friendly, and nontoxic and harmless, and is simple in preparation process and low in production cost.

Description

technical field [0001] The invention relates to a preparation method of a magnesium alloy surface self-repairing anti-corrosion coating, specifically a magnesium alloy surface corrosion inhibitor-ZrO 2 / Preparation method of epoxy resin coating. Background technique [0002] Corrosion is due to the electrochemical, chemical and physical effects between the metal material and the surrounding medium, and some changes in the state of the metal, resulting in the destruction of the metal material. In the period after the Industrial Revolution, mechanical equipment was widely used all over the world. Therefore, the phenomenon of corrosion occurred in all fields of production and life. Metal corrosion involves a wide range and causes large economic losses. In some key fields, such as marine petrochemical industry, aerospace, traffic trunk line, etc., it is hoped that the metal equipment used can have a long service life. Once corrosion occurs in certain structures that play a k...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C23F11/08C23F11/14C23F11/16C23F11/18
Inventor 王桂香韩昕辰何津萌李泽源吴倩张晓红张丽丽吴春喜
Owner HARBIN ENG UNIV
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