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MXene coating prepared based on spin-coating method and application of MXene coating in hydrogen resistance process

A spin-coating method and coating technology, applied in the coating, metal material coating process, superimposed layer plating and other directions, can solve the problems of easy peeling off of the hydrogen barrier coating, harsh preparation conditions, poor thermal stability, etc. Good hydrogen permeability, simple operation steps, good controllability

Pending Publication Date: 2022-04-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used materials for hydrogen transportation pipelines are pipeline steel (X60, X65, X70, X80) or stainless steel. The traditional hydrogen barrier coatings with excellent hydrogen resistance properties that have been studied include alumina, silicon carbide, etc., but the traditional hydrogen barrier The coating is easy to fall off, crack, poor thermal stability, harsh preparation conditions and high production costs limit its wide application

Method used

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  • MXene coating prepared based on spin-coating method and application of MXene coating in hydrogen resistance process
  • MXene coating prepared based on spin-coating method and application of MXene coating in hydrogen resistance process
  • MXene coating prepared based on spin-coating method and application of MXene coating in hydrogen resistance process

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Effect test

Embodiment 1

[0041] In this embodiment, the attached figure 1 The spin-coating method shown, spin-coated on the surface of pipeline steel to prepare Ti 3 C 2 T x Hydrogen barrier coating, comprising the following steps:

[0042] (1) Choose X70 pipeline steel as the base material, use 200#, 400#, 800# SiC sandpaper to grind the sample step by step, use chemical reagents to corrode and polish, use 3000# SiC sandpaper to polish again, and use wool ball head to cooperate with polishing The paste polishes the substrate to a mirror finish. The polished substrate was cleaned with deionized water and ultrasonically cleaned in ethanol for 10 min, then the sample was wiped clean with a dust-free cloth, and air-dried for 3 min.

[0043] (2) Put Ti 3 C 2 (OH) 2 The MXene suspension was diluted to 4 mg / mL with deionized water and dispersed ultrasonically for 10 minutes. The diluted MXene colloid had obvious Tyndall effect under the irradiation of a laser pointer;

[0044] (3) Use as attached f...

Embodiment 2

[0052] In this embodiment, the attached figure 1 The spin-coating method shown, spin-coated on the surface of pipeline steel to prepare Ti 3 C 2 T x Hydrogen barrier coating, comprising the following steps:

[0053] (1) Choose X70 pipeline steel as the base material, use 200#, 400#, 800# SiC sandpaper to grind the sample step by step, use chemical reagents to corrode and polish, use 3000# SiC sandpaper to polish again, and use wool ball head to cooperate with polishing The paste polishes the substrate to a mirror finish. The polished substrate was cleaned with deionized water and ultrasonically cleaned in ethanol for 10 min, and then the sample was wiped clean with a dust-free cloth and air-dried.

[0054] (2) Put Ti 3 C 2 (OH) 2 The MXene suspension was diluted to 2 mg / mL with deionized water and dispersed ultrasonically for 10 minutes. The diluted MXene colloid had obvious Tyndall effect under the irradiation of a laser pointer;

[0055] (3) Use as attached figure 1...

Embodiment 3

[0062] In this embodiment, the attached figure 1 The spin-coating method shown, spin-coated on the surface of pipeline steel to prepare Ti 3 C 2 T x Hydrogen barrier coating, comprising the following steps:

[0063] (1) Choose X70 pipeline steel as the base material, use 200#, 400#, 800# SiC sandpaper to grind the sample step by step, use chemical reagents to corrode and polish, use 3000# SiC sandpaper to polish again, and use wool ball head to cooperate with polishing The paste polishes the substrate to a mirror finish. The polished substrate was cleaned with deionized water and ultrasonically cleaned in ethanol for 10 min, and then the sample was wiped clean with a dust-free cloth and air-dried.

[0064] (2) Put Ti 3 C 2 (OH) 2 The MXene suspension was diluted to 4 mg / mL with deionized water and dispersed by ultrasonic wave for 10 minutes. The diluted MXene colloid had obvious Tyndall effect under the irradiation of a laser pointer;

[0065] (3) Place the X70 pipelin...

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Abstract

The invention discloses an MXene coating prepared on the basis of a spin-coating method and application of the MXene coating in a hydrogen resistance process. The method comprises the following steps: diluting an MXene suspension into an MXene colloidal solution; polishing and cleaning a substrate obtained by linear cutting, placing the substrate on a spin coater supporting sheet, dropwise adding an MXene colloidal solution on the surface of the substrate for spin coating, and air-drying the substrate in air to obtain a coating; putting the coating into an electrochemical hydrogen permeation testing device, and adding Watt nickel plating liquid into the non-coating side of the anode tank for nickel plating; after nickel plating, replacing the solution in the anode tank with a NaOH solution, and applying a positive constant potential to record the current density change of the cathode side; and after the current is stable, adding an electrolyte into the cathode cell, and loading the current to start hydrogen charging. The MXene coating is prepared by adopting a spin-coating method, the method is simple to operate and high in repeatability and can be used for industrial large-scale production, and the prepared MXene coating is controllable in thickness, has good hydrogen resistance and has industrial application potential in the field of hydrogen resistance coatings.

Description

technical field [0001] The invention belongs to the technical field of hydrogen barrier coatings, in particular to an MXene coating prepared based on a spin coating method and its application in a hydrogen barrier process. Background technique [0002] Hydrogen energy, as a clean energy with wide sources, high energy density, and recyclability, is gradually replacing coal and other traditional energy sources. The ensuing hydrogen transmission technology problem has become a major problem that the current hydrogen energy storage and transportation industry needs to overcome. difficulties. Under normal circumstances, hydrogen transportation pipelines are made of metal materials such as pipeline steel and stainless steel. However, during the large-scale and long-distance hydrogen transportation process, hydrogen embrittlement problems such as plastic loss and accelerated fatigue crack growth rate caused by hydrogen infiltration into the interior of the metal material, This wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C20/06C23C28/00C25D3/12
Inventor 肖舒蒙心钰石科军陈国华江赛华周池楼吴昊
Owner SOUTH CHINA UNIV OF TECH
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