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Method for improving corrosion resistance of surface of power distribution cabinet

A power distribution cabinet and corrosion-resistant technology, which is applied in the field of new material processing, can solve the problems of safe operation of dangerous power distribution cabinets, aggravate corrosion rate, and lose protection effect, etc., to achieve enhanced external anti-corrosion performance, good wear resistance, and improved The effect of safety and service life

Inactive Publication Date: 2019-11-26
刘宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing power distribution cabinet body is mostly protected by coatings to achieve anti-corrosion effects. However, coatings with general performance have low resistance to electrochemical corrosion of the cabinet body, resulting in corrosion on the contact surface between the paint and the cabinet body. The scale layer loses its protective effect and increases the corrosion rate. Under the rain, the coating peels off together with the corrosion layer, which is dangerous for the safe operation of the power distribution cabinet.

Method used

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  • Method for improving corrosion resistance of surface of power distribution cabinet

Examples

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Embodiment 1

[0018] A method for improving the corrosion resistance of the surface of the power distribution cabinet. The surface of the power distribution cabinet is polished with 120-grit sandpaper for 10 minutes, then soaked in sodium silicate aqueous solution, acetone, and ethanol for 3 minutes, and then wiped dry Surface liquid, put it in an 80°C drying oven to dry for 3 hours, apply anti-corrosion coating, and then put it in a blast drying oven to cure for 1.5 hours at a curing temperature of 125°C to obtain a corrosion-resistant power distribution cabinet body. The anti-corrosion The preparation process of the coating includes the following steps:

[0019] (1) Weigh 3.3 grams of lanthanum oxide and 6.6 grams of magnesium oxide and place them in beaker A, add 40 milliliters of hydrochloric acid solution under stirring, weigh 1.7 grams of monoisopropanol phthalate and place them in beaker B, and stir Add 30 ml of sodium hydroxide aqueous solution, heat in a water bath to 45 ° C, keep ...

Embodiment 2

[0028] A method for improving the corrosion resistance of the surface of the power distribution cabinet. The surface of the power distribution cabinet is polished with 120-grit sandpaper for 12 minutes, and then soaked in sodium silicate aqueous solution, acetone, and ethanol for 3.5 minutes, and dried after treatment. Surface liquid, put it in an 85°C drying oven to dry for 3.5 hours, apply anti-corrosion coating, and then put it in a blast drying oven to cure for 1.8 hours at a curing temperature of 128°C to obtain a corrosion-resistant power distribution cabinet body. The anti-corrosion The preparation process of the coating includes the following steps:

[0029](1) Weigh 3.35 grams of lanthanum oxide and 6.7 grams of magnesium oxide and place them in beaker A, add 45 milliliters of hydrochloric acid solution under stirring, weigh 1.75 grams of monoisopropanol phthalate and place them in beaker B, and stir Add 32 ml of sodium hydroxide aqueous solution, heat in a water bath...

Embodiment 3

[0038] A method for improving the corrosion resistance of the surface of the power distribution cabinet. The surface of the power distribution cabinet is polished with 120-grit sandpaper for 15 minutes, then soaked in sodium silicate aqueous solution, acetone, and ethanol for 4 minutes, and then wiped dry Surface liquid, put it in a 90°C drying oven to dry for 4 hours, apply anti-corrosion paint, and then put it in a blast drying oven to cure for 2.0 hours at a curing temperature of 130°C to obtain a corrosion-resistant power distribution cabinet body. The anti-corrosion The preparation process of the coating includes the following steps:

[0039] (1) Weigh 3.4 grams of lanthanum oxide and 6.8 grams of magnesium oxide in beaker A, add 50 milliliters of hydrochloric acid solution under stirring, weigh 1.8 grams of monoisopropanol phthalate in beaker B, and stir Add 35 ml of sodium hydroxide aqueous solution, heat in a water bath to 55 ° C, keep stirring for 30 minutes, weigh 4....

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Abstract

The invention relates to the technical field of novel material processing, and discloses a method for improving the corrosion resistance of the surface of a power distribution cabinet. According to the method provided by the invention, the principle of electrochemical corrosion and the change law of the physical and chemical properties of a corrosive scale layer are studied, in the preparation process of a protective coating, a layered polymetallic material is prepared by using lanthanum oxide as a raw material and an atom with a special electronic structure as a center and utilizing magnesiumions and metaaluminate radicals, the layered polymetallic material is subjected to organic structural modification to form a composite system, the composite system is added into an epoxy resin coating, the obtained anticorrosive coating coats the power distribution cabinet, so that the thermal stability and chemical stability of the metal material are improved, the free energy is a positive value, liquid phase transmission is prevented, and progress of corrosion is inhibited; and in the mass transfer process, resistance is set in an adsorption, charge transfer and electrochemical reaction tolimit an electrode reaction in the electrochemical reaction, so that electrochemical corrosion is effectively inhibited, the power distribution cabinet has excellent corrosion resistance in harsh working environments, and the safety and service life of the power distribution cabinet are improved.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and in particular relates to a method for improving the corrosion resistance of the surface of a power distribution cabinet. Background technique [0002] The power distribution cabinet (box) is divided into power distribution cabinet (box), lighting distribution cabinet (box), metering cabinet (box), and is the final equipment of the power distribution system. The power distribution cabinet is a general term for the motor control center. The power distribution cabinet is used in the occasions where the load is relatively scattered and there are few circuits; the motor control center is used in the occasions where the load is concentrated and there are many circuits. They distribute the electric energy of a certain circuit of the upper-level power distribution equipment to the nearest load. This level of equipment shall provide protection, monitoring and control of the load. Du...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/61
CPCC08K2003/2241C08L2201/08C09D5/08C09D163/00C09D7/61C08K3/22C08K3/24
Inventor 刘宁
Owner 刘宁
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