Degradation mechanism of silicone rubber in simulated PEM fuel cell environment

LI Guo; TAN Jinzhu; GONG Jianming; JIA Wenhua

doi:10.3969/j.issn.0438-1157.2014.09.049

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Degradation mechanism of silicone rubber in simulated PEM fuel cell environment

更新时间：2025-12-10

- Degradation mechanism of silicone rubber in simulated PEM fuel cell environment
- CIESC Journal Issue 9, Pages: 3669-3675(2014)
- 作者机构：
  
  1. 南京工程学院机械工程学院,江苏,南京,211167
  2. 南京工业大学机械与动力工程学院,江苏,南京,211816
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.09.049
  CLC： K91
- Online First：05 September 2014，
  
  Published：05 September 2014
- 稿件说明：
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LI Guo, TAN Jinzhu, GONG Jianming, et al. Degradation mechanism of silicone rubber in simulated PEM fuel cell environment[J]. CIESC Journal, 2014, (9): 3669-3675.
DOI：

LI Guo, TAN Jinzhu, GONG Jianming, et al. Degradation mechanism of silicone rubber in simulated PEM fuel cell environment[J]. CIESC Journal, 2014, (9): 3669-3675. DOI： 10.3969/j.issn.0438-1157.2014.09.049.

摘要

弹性体材料垫片作为PEM燃料电池中一个重要构件，长期服役在PEM燃料电池潮湿、偏酸性环境下，其化学损伤过程是如何演变的对于研究垫片材料的机械密封性能、预测垫片材料的寿命起着基础性作用。采用先进材料测试分析方法XPS技术研究了弹性体材料在模拟的燃料电池环境中的化学降解过程，从分子角度揭示了材料化学损伤的机理主要是材料分子主链的断裂、侧链的断裂及交联区的水解。

Abstract

Elastomer material gasket as an important component works in proton exchange membrane (PEM) fuel cell under moist

acidic conditions. The evolution process of the material's chemical degradation plays a fundamental role in studying the performance of mechanical seal gasket material and its life prediction. The chemical process of the elastomer material was analyzed by using X-ray photoelectron spectroscopy (XPS). The degradation mechanism was mainly molecular chain scission in the backbone and side chain and hydrolysis of crosslinking.

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