부피 분석법을 이용한 고무 소재의 수소 기체 장입량 및 확산도 측정 기술 개발

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 33; no. 1; pp. 67 - 76
• Main Authors: 이지훈(JI HUN LEE), 정재갑(JAE KAP JUNG), 백운봉(UN BONG BAEK), 정기수(KI SOO CHUNG)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2022
• Subjects: 기계공학; Hydrogen diffusion(수소 확산); Volumetric measurement(부피 측정); Rubber(고무); Graduated cylinder(눈금실린더); Uncertainty(불확도)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2022.33.1.67

We developed a technology that can measure the hydrogen uptake and diffusivity of rubber materials by using the volumetric analysis method and diffusivity analysis program through the measurement of the water level in the graduated cylinder. In this method, hydrogen gas is charged at a certain pressure for a certain period of time for a rubber material exposed to a high-pressure hydrogen gas environment, and then the pressure is reduced to measure the change in the water level in the graduated cylinder in real time, and based on the measured value, it is a technology that can evaluate hydrogen uptake and diffusivity using diffusivity analysis program. Using this method, the hydrogen uptake and diffusivity of the NBR material were measured with respect to the change in the type and weight ratio of the filler used to improve the physical properties of the rubber material. In addition, uncertainty analysis was performed on the diffusivity measurement method.