Fracture Behavior and Hydrogen Permeation Properties of EPDM for Sealing under High Pressure Hydrogen Gas

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  • YAMABE Junichiro
    International Research Center for Hydrogen Energy, Kyushu University The Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), National Institute of Advanced Industrial Science and Technology (AIST)
  • KOGA Atsushi
    NOK Corporation
  • NISHIMURA Shin
    The Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), National Institute of Advanced Industrial Science and Technology (AIST) Department of Mechanical Engineering, Faculty of Engineering, Kyushu University

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Other Title
  • 高圧水素ガス環境下におけるエチレンプロピレンゴム製シール材の破壊現象と水素透過特性
  • コウアツ スイソ ガス カンキョウ カ ニ オケル エチレンプロピレンゴムセイ シールザイ ノ ハカイ ゲンショウ ト スイソ トウカ トクセイ

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Abstract

In order to evaluate the influence of environmental condition on durability and permeation properties of sealing rubber materials under high pressure hydrogen gas, a durability tester which enables the sealing rubber to expose repeatedly high pressure hydrogen gas at arbitrary test conditions (maximum pressure is 90 MPa and the range of ambient temperature is from –60 to 100 °C) was developed. In this study, durability and hydrogen permeation properties of peroxide- vulcanized EPDM composite filled with white reinforcing filler were evaluated under hydrogen gas at a maximum pressure of 70 MPa and the range of ambient temperature from 0 to 100 °C. The dependence of the ambient temperature on permeability, diffusivity, and solubility was not influenced by the hydrogen pressure and the shape of specimen. Moreover, although we can regard that hydrogen content was approximately proportional to the hydrogen pressure at ≤10 MPa, this relationship became non-linear when a hydrogen pressure became higher. As for durability, blister damage became more serious with an increase in the hydrogen pressure and ambient temperature. Furthermore, damage by extrusion was also observed at ≥35 MPa due to large gas absorption.

Journal

  • NIPPON GOMU KYOKAISHI

    NIPPON GOMU KYOKAISHI 83 (6), 159-166, 2010

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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