Effects of curing systems on the mechanical and chemical ageing resistance properties of gasket compounds based on ethylene-propylene-diene-termonomer rubber in a simulated fuel cell environment

被引：25

作者：

Nah, Changwoon ^{[1
]}

Kim, Seung Gyeom ^{[1
]}

Shibulal, Gopi Sathi ^{[1
]}

Yoo, Yong Hwan ^{[1
]}

Mensah, Bismark ^{[1
]}

Jeong, Byeong-Heon ^{[2
]}

Hong, Bo Ki ^{[2
]}

Ahn, Jou-Hyeon ^{[3
,4
]}

机构：

[1] Chonbuk Natl Univ, Dept Polymer Nano Sci & Technol, Hapt Polymer Composite Res Team, Jeonju 561756, South Korea

[2] Hyundai Motor Grp, R&D Div, Fuel Cell Vehicle Team 1, Yongin 446912, South Korea

[3] Gyeongsang Natl Univ, Dept Chem Engn, Jinju 660701, South Korea

[4] Gyeongsang Natl Univ, Res Inst Green Energy Convergence Technol, Jinju 660701, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 33期

基金：

新加坡国家研究基金会;

关键词：

EPDM; Fuel cell gasket; Mechanical properties; Crosslink density; Chemical degradation; ACIDIC ENVIRONMENT; DIFFUSION LAYERS; CROSS-LINKING; DEGRADATION; VULCANIZATION; EPDM; AIR;

D O I：

10.1016/j.ijhydene.2015.07.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ethylene-propylene-diene-termonomer (EPDM) rubber based fuel cell gasket compounds have been designed and explored the effects of various vulcanization systems on different properties. Three types of sulphur-accelerated vulcanization systems such as conventional vulcanization (con), semi-efficient vulcanization (sev) and efficient vulcanization (ev) and also a peroxide vulcanization system were employed in this study. The curing characteristics, tensile, hardness and compression set properties of the cured compounds were evaluated. The crosslink density was assessed by equilibrium swelling method in dodecane. The chemical stability of the cured EPDM compounds was also evaluated through an accelerated durability test (ADT) using a solution (1 M H2SO4 + 10 ppm HF) very close to the fuel cell atmosphere. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), energy dispersive X-ray spectroscopy (EDX) and scanning electron microscopy (SEM) were employed to investigate the chemical and physical changes of the cured EPDM compounds before and after exposure to the ADT solution over time. The results indicate that the EPDM compounds cured with peroxide exhibit the highest crosslink density with lowest compression set value at both room temperature and at elevated temperature. The FTIR and the corresponding SEM results show no significant chemical degradation of the peroxide cured EPDM compounds due to ADT ageing. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：10627 / 10635

页数：9

共 37 条

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