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
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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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