使用聚胺嵌入式碳纳米管在变压器油中的高度灵敏和稳定的in situ乙烯检测
Sihyeok Kim1, Jin-Myung Choi1, Ilya V Novikov1
1Department of Nano Engineering, Department of Nano Science and Technology, SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
Advanced materials (Deerfield Beach, Fla.)
|November 29, 2024
概括
这项研究引入了一种新的乙烯气体传感器,用于实时监测变压器油. 碳纳米管聚胺传感器在油中提供稳定,增强的性能,适用于工业变压器应用.
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.
- 电气工程 电气工程
背景情况:
- 传统的气体传感器需要提取油,这限制了实时监控.
- 通过监测溶解的气体,如乙,可以检测变压器油的降解.
- 需要强大的传感器,能够在恶劣环境中进行现场监测.
研究的目的:
- 开发和描述一种新型的乙烯气体传感器,用于在现场监测变压器油.
- 为了评估传感器在油性介质中的性能,稳定性和耐用性.
- 为了证明传感器适用于工业变压器应用.
主要方法:
- 合成的碳纳米管 (CNTs) 嵌入聚胺 (PI) 使用浮动催化剂化学蒸汽沉积.
- 用金纳米颗粒装饰CNT来增强灵敏度.
- 集成了一个基于CNT-PI的加热器,以达到最佳工作温度 (90°C).
- 在油中测试了传感器性能,包括响应/恢复时间和6个月和10,000个曲周期的稳定性.
主要成果:
- 在气相中,CNT-PI传感器实现了高响应率 (10.5%在30ppm) 和快速响应/恢复时间 (28s/77s).
- 在油性介质中,传感器显示出良好的响应 (10.4%在30ppm) 和适度的响应/恢复时间 (444s/670s).
- 在6个月内表现出稳定的传感性能,并在10,000个曲周期后表现一致.
结论:
- 开发的CNT-PI传感器可以实时,现场检测变压器油中的乙.
- 传感器表现出极好的稳定性,耐用性和增强的灵敏度,使其适合工业用途.
- 这项技术为变压器状态监测和维护提供了重大进步.
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