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基于分子动力学模拟,研究影响石墨烯改性青自我愈合性能的因素

Fei Guo¹, Xiaoyu Li¹, Ziran Wang¹

¹School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou 450001, China.

|September 14, 2024

概括

与基础青相比,石墨烯改性青显示出优越的自我愈合和抗衰老特性. 衰老和损伤显著减缓愈合,石墨烯添加剂减轻了这些影响,特别是在更宽的裂中.

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.
土木工程土木工程是指土木工程.

背景情况:

青的老化和损坏会降低其性能.
石墨烯的修改提供了提高青性能的潜力.
了解自愈机制对于路面的耐用性至关重要.

研究的目的:

调查影响青自愈的环境因素.
比较基石和石墨烯改性青的自我愈合.
量化老化,温度和损伤程度的影响.

主要方法:

用于建模青行为的分子动力学模拟.
使用密度,RDF,Tg和CED验证的青分子模型.
模拟的愈合过程超过200PS.

主要成果:

氧化衰老阻碍了分子迁移,并减少了自我愈合.
石墨烯改性青表现出更慢的愈合性能衰退与衰老.
裂宽度显著影响各种因素对愈合的影响.

结论:

石墨烯改性青具有增强的抗衰老和自我愈合能力.
氧化衰老和损伤程度是影响愈合的关键因素.
与衰老和损伤相比,愈合温度的影响不那么明显.

关键词:

损伤程度损伤程度损伤程度用石墨烯修饰的青.愈合温度的愈合温度是什么分子动力学分子动力学氧化衰老是一种氧化衰老.自愈的性能表现自我愈合的表现

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