1265 高圧水素ガス環境中で曝露したゴム材料のブリスタ破壊と引張特性・水素侵入特性に及ぼす充てん剤の影響(G03-11 材料力学(11)疲労・強度4,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

抄録

EPDM and NBR composites adding carbon black (CB) and silica (SC) as fillers were exposed to a high pressure hydrogen gas, whose maximum pressure was 100 MPa. Irrespective of kinds of rubber materials, the blister damage of the composites adding SC was slighter than that of the composites adding CB, although both fillers improve the mechanical properties of the rubber materials. This reason is considered to be due to the difference in the hydrogen content penetrated in the composites by hydrogen exposure. i.e., the hydrogen content of the composites adding SC was lower than that of the composites adding CB. These blister damages got heavier with the increase in a hydrogen pressure. With respect to the influence of hydrogen exposure on tensile properties, the decrease in fracture strength by 100 MPa hydrogen exposure can be seen, while its decrease by 10 MPa hydrogen exposure was hardly seen.