Hydrogen leakage detection coating and application thereof

A coating and functional coating technology, applied in epoxy resin coatings, coatings and other directions, can solve the problems of inability to meet the safety requirements of hydrogen resource utilization, inability to locate leakage points, and inability to achieve effective monitoring of hydrogen leakage. The method is simple and intuitive, the application method is simple, and the effect of a wide range of application scenarios

Pending Publication Date: 2021-10-15
北京航天凯恩新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot locate the leakage point; in some large-volume and high-flow hydrogen storage equipment, local hydrogen leakage is difficult to cause significant changes in the pressure consumption in the system, making this method impossible to locate the hydrogen leakage. effective monitoring of
[0004] Various problems exist in the application scope and effect of the existing hydrogen leak detection methods, making it unable to meet the industry's demand for the safety of hydrogen resource utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: adding quartz and corundum to the polymethacrylate paint base, and tungsten trioxide mixed with iridium nanoparticles, stirring evenly, and coating on a glass plate. After it is dried and solidified, place the glass plate in the air chamber, and introduce hydrogen gas with a volume fraction of 5% (nitrogen as the balance gas) into the air chamber. After about 10 minutes, it can be observed that the color of the coating gradually changes from light yellow to Pale green. After continuing to ventilate for 10 minutes, it can be observed that the color of the coating turns blue.

Embodiment 2

[0031] Embodiment 2: Add talc and mica to the epoxy resin coating base, and molybdenum trioxide mixed with rhodium-containing nanoparticles, stir evenly and coat on a glass plate. After it was dried and solidified, the glass plate was placed in the air chamber, and 1% hydrogen gas (nitrogen was the balance gas) was introduced into the air chamber. After 10 minutes, the coating could be observed to change from white to blue.

Embodiment 3

[0032] Example 3: Asbestos and vermiculite are added to the acrylic resin coating base, and molybdic acid containing platinum nanoparticles is added, stirred evenly, and then coated on the outside of the actual pipeline. After it is dried and solidified, hydrogen gas with a volume fraction of 10% (nitrogen is the balance gas) is passed into the pipeline at a rate of 1 L / min. After one month of use, it was found that the color of the paint coating at a certain interface of the pipeline turned blue, and hydrogen leakage occurred at the interface where the discoloration was detected.

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PUM

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Abstract

The invention relates to a functional coating and application thereof, in particular to a functional coating for detecting hydrogen and a use method thereof. The functional coating comprises a coating serving as a matrix and a color-changing material capable of reacting with hydrogen to change color. When the functional coating is in contact with hydrogen, the color changes, so that whether the material is in contact with hydrogen or not can be judged according to the color change of the coating. The functional coating is intrinsically safe, simple and convenient in application mode and wide in application scene, solves the problems that the leakage positioning capability is limited and tiny leakage is difficult to capture in the existing detection technology, is a supplement of a common hydrogen leakage detection method, and has extremely high use value.

Description

technical field [0001] The invention relates to a functional coating and its application, in particular to a functional coating for detecting hydrogen and its application method. Background technique [0002] Hydrogen energy is an important direction of the future energy technology revolution and industrial development, and an important means to achieve carbon peaking and carbon neutrality. At the same time, hydrogen is easy to diffuse, difficult to liquefy, flammable and explosive, and leakage will bring great danger. Therefore, effective prevention of hydrogen leakage has always been an urgent problem to be solved. [0003] Although the hydrogen concentration gas sensor is currently the most widely used and most mature hydrogen leakage monitoring method, it still has certain limitations. Due to the high cost, fixed sensors can only be deployed in limited locations, so they can only provide the approximate range of the leak point, but cannot provide the exact location of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D163/00C09D7/61
CPCC09D133/04C09D163/00C09D7/61C09D7/70C08K2003/2227C08K2003/2258C08K2003/2255C08K3/36C08K3/22C08K3/08C08K3/34C08K7/12C08K3/24
Inventor 孟醒徐林楠贾月李俊米思巍张旭毛亚南赵坦钟秋刘慧娜
Owner 北京航天凯恩新材料有限公司
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