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Preparation method of superhydrophobic conductive anticorrosion coating for grounding grid

A conductive anti-corrosion and super-hydrophobic technology, applied in conductive coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve problems such as grounding grid corrosion, and achieve the effects of inhibiting corrosion, preventing moisture adhesion, and high conductivity

Active Publication Date: 2022-04-22
STATE GRID HEBEI ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the present invention aims to propose a method for preparing a super-hydrophobic conductive anti-corrosion coating for grounding grids to prevent moisture from adhering to the surface of steel and fundamentally solve the problem of grounding grid corrosion

Method used

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  • Preparation method of superhydrophobic conductive anticorrosion coating for grounding grid
  • Preparation method of superhydrophobic conductive anticorrosion coating for grounding grid
  • Preparation method of superhydrophobic conductive anticorrosion coating for grounding grid

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Embodiment 1

[0039] The present embodiment relates to a method for preparing a superhydrophobic conductive anti-corrosion coating for grounding mesh, comprising the following steps:

[0040] Step 1: LiF and hydrochloric acid were used to etch the titanium-aluminum-carbon MAX phase and prepare Méne. Preferably, the concentration of hydrochloric acid is 5 ~ 12mol / L. Among them, the titanium-aluminum carbon MAX phase is Ti 2 C。 The specific step is to slowly dissolve lithium fluoride in hydrochloric acid, stir for 5 minutes, and slowly add 1g Ti 2 AlC, join Ti 2 AlC takes ten minutes, and slowly the hydrochloric acid will corrode the Ti 2 Aluminum in AlC. Stir at room temperature for 24 hours, then wash and centrifuge with deionized water at a centrifugal speed of 3500 rpm, each centrifugation for 5 min, about 6-8 centrifugations, until the pH of the solution is greater than 6. Collect the pellet, dissolve the pellet in water, and sonicate for 3 hours in an atmosphere protected by argon. The la...

Embodiment 2

[0048] The present embodiment relates to a preparation method of superhydrophobic conductive anti-corrosion coating for grounding mesh, which is the specific application under Example 1.

Embodiment 21

[0050] Step 1: Apply LiF and hydrochloric acid to etch the titanium-aluminum-carbon MAX phase and prepare Méne. Specifically, 0.67g of lithium fluoride was slowly dissolved in 10mL of hydrochloric acid at a concentration of 5mol / L, stirred for 5 minutes, and 1g ti was added slowly 2 AlC, join Ti 2 AlC takes ten minutes. Stir at room temperature for 24 hours, and then wash and centrifuge with deionized water, centrifugation speed is 3500 rpm, each centrifugation is 5 min, about 6-8 centrifugations, so that the PH of the solution is greater than 6. Collect the precipitation, dissolve in 100 mL of water, under an atmosphere protected by argon, sonicate for 3 hours. The last 3500 rpm, centrifugation for one hour, the supernatant is collected, and the centrifuged solid is Méne.

[0051] Step two, the 0.2g step 1 obtained Mxene into the ammonia / hydrogen peroxide mixed solution (wherein, ammonia and hydrogen peroxide take 50ml each, the concentration of ammonia is 25wt%, the concentrat...

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Abstract

The invention provides a preparation method of a super-hydrophobic conductive anti-corrosion coating for a grounding grid, comprising etching the titanium-aluminum-carbon MAX phase with LiF and hydrochloric acid to obtain Mxene, putting it and a fluorinating agent into tetrahydrofuran, condensing, pumping After vacuum filtration and drying, the fluorinated modified Mxene was obtained; the fluorinating agent and multi-walled carbon nanotubes were put into tetrahydrofuran, and after condensation, vacuum filtration and drying, the fluorinated modified carbon nanotubes were obtained; the epoxy resin was added Solution A is obtained in tetrahydrofuran; solution B is obtained by dispersing fluorinated modified Mxene and fluorinated modified carbon nanotubes in tetrahydrofuran; the two are mixed, and a curing agent is added, and then coated on the grounding grid, and superhydrophobic is obtained after curing coating. The invention uses the high specific surface area of ​​Mxene to prepare the surface micro-nano structure, and uses the fluorinating agent to provide low surface energy. The micro-nano structure and the low surface energy are coupled to construct a super-hydrophobic surface to prevent the attachment of moisture on the surface of the grounding grid steel and achieve long-term anti-corrosion.

Description

Technical field [0001] The present invention relates to the field of conductive anti-corrosion coating technology, in particular to a method for preparing a superhydrophobic conductive anti-corrosion coating for grounding mesh. Background [0002] The power station is an important facility and place to ensure the national electricity consumption, among which the grounding network system of the power substation is directly related to the normal operation of the power station and the safety of personnel and equipment. In recent years, with the increase of China's power capacity, the increase of transmission voltage and the influence of AC and DC interference sources (DC grounding electrodes, electric locomotives, etc.), the materials used in the grounding network are facing serious natural corrosion and even AC and DC forced corrosion in the soil. This is due to the fact that the soil is a special electrolyte, and the grounding mesh metal will be corroded when buried in the soil. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/24C09D5/08C09D7/62
CPCC09D163/00C09D5/24C09D5/08C09D7/62C08K9/06C08K3/041C08K3/14
Inventor 李文彬王勇冯砚厅徐雪霞王庆李国维董国振
Owner STATE GRID HEBEI ELECTRIC POWER RES INST
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