AgNPs的压力敏感能力 自觉感应水泥式传感器
1School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China.
Sensors (Basel, Switzerland)
|December 23, 2023
概括
这项研究引入了使用银纳米粒子 (AgNPs) 进行结构健康监测的新型自传感水泥传感器. 这些传感器表现出卓越的应力灵敏度和稳定性,克服了传统导电填充剂的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 纳米技术纳米技术
背景情况:
- 结构健康监测 (SHM) 的智能监测对于实时数字化至关重要.
- 自觉感应的水泥复合材料提供了优势,但面临着诸如填充剂分散和低应力灵敏度等挑战.
- 现有研究正在与过度导电填充剂和水泥传感器的不稳定性作斗争.
研究的目的:
- 开发使用银纳米粒子 (AgNPs) 的先进的自我感应水泥传感器,以解决当前研究的局限性.
- 研究AgNPs作为新型导电填充剂在水泥复合材料中的性能和性能.
- 为了提高压力敏感性,稳定性和分散性,用于结构健康监测的自我传感材料.
主要方法:
- 制造具有银纳米粒子 (AgNPs) 的自传感水泥传感器.
- 使用导电性测量确定AgNP的透值.
- 通过紫外线光谱测量和吸收性测试对AgNP分散的评估.
- 通过循环负荷测试来评估传感器性能,以测量应力灵敏度和稳定性.
主要成果:
- 对于AgNP来说,达到0.0066 wt%的显著低透值,与传统填充剂相比,减少了90%.
- 在水溶液中证明了AgNP的优良分散,促进导电通路的形成.
- 在循环负荷测试中表现出强大的压力敏感稳定性和11.736的高应力敏感性.
- 确定了AgNP在水泥基质内形成众多稳定的导电通路的能力.
结论:
- 银纳米粒子提供了一个有前途的解决方案,以应对自传感水泥材料的挑战.
- 开发的基于AgNP的传感器显示了结构健康监测应用的增强性能.
- 这项研究为开发具有改进功能的先进自传感材料提供了新的参考.
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