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http://dx.doi.org/10.7316/KHNES.2020.31.5.453

Influence of Filler Particle Size on Behaviour of EPDM Rubber for Fuel Cell Vehicle Application under High-Pressure Hydrogen Environment  

KIM, KEEJUNG (Institute of Gas safety R&D, Korea Gas Safety Corporation)
JEON, HYEONG-RYEOL (Pyung Hwa Oil Seal Industry Co.,Ltd.)
KANG, YOUNG-IM (Pyung Hwa Oil Seal Industry Co.,Ltd.)
KIM, WANJIN (Institute of Gas safety R&D, Korea Gas Safety Corporation)
YEOM, JIWOONG (Institute of Gas safety R&D, Korea Gas Safety Corporation)
CHOI, SUNG-JOON (Institute of Gas safety R&D, Korea Gas Safety Corporation)
CHO, SUNGMIN (Institute of Gas safety R&D, Korea Gas Safety Corporation)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.31, no.5, 2020 , pp. 453-458 More about this Journal
Abstract
In this study, ethylene-propylene-diene monomer (EPDM) rubbers reinforced with various particle size of carbon black were prepared and tested. We followed recently published CSA/ANSI CHMC2 standard "the test methods for evaluating material compatibility in compressed hydrogen applications-polyemr". Measurement of change in hardness, tensile strength and volume were performed after exposure to maximum operating pressure, 87.5 MPa, for 168 hours (1 week). Once EPDM was exposed to high-pressure hydrogen, the samples experience volume increase and degradation of the physical properties. Also, after the dissolved hydrogen was fully eliminated from the specimens, the hardness and the tensile properties were not recovered. The rubber reinforced with smaller sizes of carbon black particles showed less volume expansion and decrease of physical properties. As a result, smaller particle size of carbon black filler led to more resistance to high-pressure hydrogen.
Keywords
Fuel cell electric vehicle; Sealing material; Rubber; Hydrogen; High pressure;
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