基于弹性体的密封O环及其与甲醇,乙醇和水处理植物油的兼容性,用于燃料内燃机
Miroslav Müller1, Rajesh Kumar Mishra1, Vladimir Šleger1
1Faculty of Engineering, Czech University of Life Sciences Prague, Kamycka 129, Suchdol, 165 00 Prague, Czech Republic.
Materials (Basel, Switzerland)
|January 23, 2024
概括
甲醇,乙醇和水处理植物油等可再生燃料会降解弹性体O环. 与这些燃料的材料兼容性问题显著影响密封O环的机械性能,阻碍了发动机的适应.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 可再生能源可再生能源是可再生能源.
背景情况:
- 可再生液体燃料 (甲醇,乙醇,水处理植物油) 为柴油发动机提供可持续的替代品.
- 现有的发动机基础设施可以以最小的修改容纳这些燃料.
- 燃料系统材料的兼容性,特别是弹性密封件,是广泛采用的关键未解决的挑战.
研究的目的:
- 评估基于弹性体的密封O环与可再生液体燃料的长期材料兼容性.
- 评估水处理植物油,甲醇和乙醇在长时间内对O环的机械性能的影响.
- 确定可能阻碍使用这些替代燃料的材料降解问题.
主要方法:
- 浸泡测试O环在水处理植物油,甲醇,乙醇和柴油中,长达15个月.
- 通过拉伸强度的变化,破裂时的延伸,Shore A硬度和质量的变化来评估材料的兼容性.
- 对退化的O环与在环境条件下储存的对照样本进行比较分析.
主要成果:
- 在短时间浸泡 (0.9个月/28天) 内观察到O环机械性能显著恶化.
- 个别的可再生燃料对O环材料的性能产生了不同的影响.
- 长期浸泡 (长达15.2个月) 证实了拉伸强度,延长,硬度和质量的实质性变化.
结论:
- 基于弹性体的密封O环与常见的可再生液体燃料的长期材料兼容性不佳.
- 快速的机械性能降解需要开发适合可再生燃料系统的密封材料.
- 解决材料兼容性对于成功大规模适应柴油发动机中的可再生燃料至关重要.
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