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材料工程  2018, Vol. 46 Issue (8): 163-168    DOI: 10.11868/j.issn.1001-4381.2017.000308
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
硅橡胶密封件长期贮存老化行为
周堃1,2, 刘杰3, 赵宇1
1. 北京航空航天大学 可靠性与系统工程学院, 北京 100191;
2. 西南技术工程研究所, 重庆 400039;
3. 烟台大学 化学化工学院, 山东 烟台 264005
Aging Behavior of Silicone Rubber Seals During Long-term Storage
ZHOU Kun1,2, LIU Jie3, ZHAO Yu1
1. School of Reliability and System Engineering, Beihang University, Beijing 100191, China;
2. Southwest Technology and Engineering Research Institute, Chongqing 400039, China;
3. College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, Shandong, China
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摘要 利用扫描电镜、红外光谱、裂解气相色谱-质谱、热重分析和压缩永久变形测试对硅橡胶密封件的长期贮存老化行为进行研究。结果表明:在自然库房和棚下贮存的硅橡胶密封件力学性能发生了严重的退化,润滑脂对自然库房贮存的橡胶样品起到了较好的防护作用,硅橡胶密封件在10年贮存时间里主要发生了降解反应,在长期贮存老化过程中,硅橡胶密封件内部的异氰酸苯酯不断由样品内部向表面迁移并富集,自然库房和棚下贮存的硅橡胶样品老化机理基本一致,外界环境对硅橡胶密封件的微观结构和热稳定性均产生了重要影响。
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关键词 硅橡胶密封件长期贮存老化压缩永久变形微观结构与形貌热稳定性    
Abstract:The aging behavior of silicone rubber seals during long-term storage was studied by scanning electron microscope, attenuated total reflection-Fourier transform infrared spectroscopy, pyrolysis gas chromatography-mass spectrometry, thermogravimetric analysis and compression set test. The results show that the mechanical properties of silicone rubber seals stored in natural storehouses and sheds are seriously degraded. The grease plays a protective role in silicone rubber samples stored in natural storehouses. The degradation reactions mainly occur in the aging process. The phenyl isocyanate is migrating from inner to surface of silicone rubber samples in the long-term storage aging process. The aging mechanism of silicone rubber samples stored in natural storehouses and sheds is basically identical, and the external environment has an important impact on the microstructures and thermal stabilities of the silicone rubber seals.
Key wordssilicone rubber seal    long-term storage aging    compression set    microstructure and morphology    thermal stability
收稿日期: 2017-03-17      出版日期: 2018-08-17
中图分类号:  O633  
通讯作者: 周堃(1977-),男,研究员级高级工程师,博士,主要研究方向为装备环境适应性评价与寿命评估,联系地址:重庆市九龙坡区渝州路33号西南技术工程研究所(400039),E-mail:zkdudu@163.com     E-mail: zkdudu@163.com
引用本文:   
周堃, 刘杰, 赵宇. 硅橡胶密封件长期贮存老化行为[J]. 材料工程, 2018, 46(8): 163-168.
ZHOU Kun, LIU Jie, ZHAO Yu. Aging Behavior of Silicone Rubber Seals During Long-term Storage. Journal of Materials Engineering, 2018, 46(8): 163-168.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2017.000308      或      http://jme.biam.ac.cn/CN/Y2018/V46/I8/163
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