Jung Jae Kap
Hydrogen Energy Group, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea.
Polymers (Basel). 2024 Mar 6;16(5):723. doi: 10.3390/polym16050723.
Gas emission and diffusion through polymeric materials play crucial roles in ensuring safety and monitoring gas concentrations in technology and industry. Especially, the gas permeation characteristics for O-ring material should be investigated for sealing application in a hydrogen infrastructure. To accommodate the requirements of different environments, we first developed four complementary effective methods for measuring the gas absorption uptake from polymers enriched by pure gas under high pressure and determining the gas diffusivity. The methods included the gravimetric method, the volumetric method, the manometric method, and gas chromatography, which are based on mass, volume, pressure, and volume measurements, respectively. The representative investigated results of the developed methods, such as gas uptake, solubility, and diffusivity are demonstrated. The measuring principles, measuring procedures, measured results, and the characteristics of the methods are compared. Finally, the developed methods can be utilized for testing transport properties, such as the leakage and sealing ability, of rubber and O-ring material under high pressure for hydrogen fueling stations and gas industry.
气体通过高分子材料的排放和扩散在确保技术和工业领域的安全以及监测气体浓度方面发挥着关键作用。特别是，对于氢基础设施中的密封应用，应研究O形环材料的气体渗透特性。为了适应不同环境的要求，我们首先开发了四种互补的有效方法，用于测量高压下纯气体富集的聚合物中的气体吸收量，并确定气体扩散率。这些方法包括重量法、容量法、压力法和气相色谱法，它们分别基于质量、体积、压力和体积测量。展示了所开发方法的代表性研究结果，如气体吸收量、溶解度和扩散率。比较了这些方法的测量原理、测量程序、测量结果和特点。最后，所开发的方法可用于测试高压下橡胶和O形环材料在加氢站和气体工业中的传输性能，如泄漏和密封能力。
