分子动力学研究用功能化碳纳米管增强的水合酸的机械性能
Lin Wei1, GuiLi Liu2, ShaoRan Qian3
1School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, 110870, Liaoning, China.
Journal of molecular modeling
|January 24, 2024
概括
功能化碳纳米管显著增强了基于水泥的材料. 碳氧化纳米管在拉伸和压力强度以及酸水合物复合物的弹性模块上提供了最显著的改进.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 土木工程 土木工程是指土木工程.
背景情况:
- 功能化碳纳米管 (CNTs) 可以改善基于水泥的材料.
- 不同功能组在复合材料中CNT上的具体作用尚不清楚.
- 这项研究研究了CNT增强酸水合物 (C-S-H) 凝.
研究的目的:
- 为了研究C-S-H凝的机械性能,增强了各种功能化的CNT.
- 为了比较纯CNT,环氧涂层CNT,碳氧化CNT和氧化CNT的增强作用.
- 阐明功能组对CNTs对增强复合材料性能的影响.
主要方法:
- 使用LAMMPS平台进行了分子动力学 (MD) 模拟.
- 在C-S-H模拟中使用了ClayFF力场.
- 一个结合的ClayFF-CVFF力场模拟了CNT/C-S-H分子结构.
主要成果:
- 所有测试的CNT都提高了与纯C-S-H相比,C-S-H凝的机械性能.
- 功能化的CNT显示出比纯CNT更强大的强化作用.
- 氧化CNT提高了性,而碳氧化CNT提高了强度.
- 碳氧化CNT表现出最显著的改善,拉力和压力弹性模块分别增加了18.13%和34.78%,强度分别增加了30.40%和40.23%.
结论:
- 碳纳米管在基于水泥的复合材料中起到有效的裂桥梁的作用.
- 碳氧化CNT具有显著的潜力,可以提高基于水泥的材料的机械性能.
- 这些发现为设计具有定制性质的先进水泥复合材料提供了洞察力.
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