Degradation of Silicone Rubbers in Fenton’s Reagents
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2018年第4期
论文作者：吴凡 李克 ZHANG Qinglian ZHANG Haining CHEN Yanan PAN Mu YAN Xinping
文章页码：793 - 796
摘 要：Gaskets are applied in PEMFCs（proton exchange membrane fuel cells） to keep reactant gases and liquid within their respective regions, which are of great significance for the both sealing and electrochemical performance of fuel cells during the long-term operation. In this study, the degradation of silicone rubbers, often selected as seals in PEMFCs, in Fenton’s reagents with different H2O2 concentrations was investigated. The changes in chemical properties, mechanical behavior and surface morphology of the samples were studied before and after exposure to the test environment over time. It is found that increasing H2O2 concentration will degrade the rubbers more severely. The experimental results elucidate the degradation mechanism of silicone rubbers in Fenton’s reagents and the influence of H2O2 in the degradation process.
吴凡1，李克2,3，ZHANG Qinglian1，ZHANG Haining1,4，CHEN Yanan1，PAN Mu1,4，YAN Xinping2,3
1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology3. Intelligent Transport Systems Research Center, Wuhan University of Technology4. Hubei Key Laboratory of Fuel Cells, Wuhan University of Technology
摘 要：Gaskets are applied in PEMFCs（proton exchange membrane fuel cells） to keep reactant gases and liquid within their respective regions, which are of great significance for the both sealing and electrochemical performance of fuel cells during the long-term operation. In this study, the degradation of silicone rubbers, often selected as seals in PEMFCs, in Fenton’s reagents with different H2O2 concentrations was investigated. The changes in chemical properties, mechanical behavior and surface morphology of the samples were studied before and after exposure to the test environment over time. It is found that increasing H2O2 concentration will degrade the rubbers more severely. The experimental results elucidate the degradation mechanism of silicone rubbers in Fenton’s reagents and the influence of H2O2 in the degradation process.
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