基于水泥的智能材料,用CNT插入的CF增强:准备和性能评估
Xiaoyan Liu1, Xiangwei Guo2, Junqing Zuo3
1College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China.
Nanomaterials (Basel, Switzerland)
|June 11, 2025
概括
这项研究开发了使用碳纳米管在碳纤维上移植的智能水泥复合材料,用于结构健康监测. 这些增强的复合材料显示出更好的导电性,灵敏性和机械性能,可用于可靠的结构评估.
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:
- 基于水泥的智能材料为结构健康监测提供了潜力.
- 导电填充剂可以提高复合材料的性能,但面临分散的挑战.
- 碳纳米管 (CNT) 和碳纤维 (CF) 是主要的导电材料.
研究的目的:
- 为增强结构监测开发一种新型的CNT-CF嵌入式水泥复合材料 (CNT-CF/CC).
- 为了改善水泥复合材料中的导电填充剂的分散和性能.
- 研究开发的复合材料的导电性,灵敏性和机械性能.
主要方法:
- 使用合剂方法将CNT植入CF表面,以创建CNT-CF.
- 将CNT-CF纳入一个水泥复合材料 (CNT-CF/CC).
- 使用扫描电子显微镜 (SEM) 和X射线光电谱 (XPS) 进行材料分析.
主要成果:
- 与CF/CC相比,CNT-CF/CC表现出明显增强的导电性和压电阻.
- 复合材料在不同温度和湿度下表现出稳定的性能和广泛的测量范围.
- 机械性能得到了改善,故障负载为25 kN,最大FCR为24.77%.
结论:
- CNT-CF/CC为结构健康监测提供了一个有前途的解决方案,具有卓越的性能.
- 提高的导电性和灵敏性归因于CNT和增强的填充剂分散.
- CNT-CF与水泥矩阵之间的强大的接口连接确保了稳定的性能.
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