含水环境高聚物注浆材料交联过程与微观结构演变模拟
CSTR:
作者:
作者单位:

1.郑州大学 水利与交通学院,河南 郑州 450001;2.黄河实验室(郑州大学),河南 郑州 450001;3.郑州大学 地下工程研究院,河南 郑州 450001;4.黄河实验室(河南),河南 郑州 450001;5.重大基础设施检测修复技术国家地方联合工程实验室,河南 郑州 450001;6.地下工程灾变防控省部共建协同创新中心,河南 郑州 450001;7.中铁七局集团第五工程有限公司,河南 郑州 450016

作者简介:

王翠霞,副教授,硕士生导师,工学博士,主要研究方向为高聚物材料的物理力学性能、改性和应用。 E-mail: cuixia.wang@outlook.com

通讯作者:

武永深,博士生,主要研究方向为非开挖修复用高聚物注浆材料的多尺度模拟。 E-mail: wys19970101@163.com

中图分类号:

TU57+5

基金项目:

国家自然科学基金(52178368,51909242,52009125);河南省自然科学基金重点项目(232300421137);河南省高校科技创新团队和人才培养计划(23IRTSTHN004,23HASTIT007);中国博士后基金(2020TQ0285, 2022M722882);黄河实验室(郑州大学)一流课题(YRL22LT07);安徽省自然科学基金水科学联合基金(2308085US15)


Simulation of Crosslinking Process and Microstructure Evolution of Polymer Grouting Material in Watery Environments
Author:
Affiliation:

1.School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou 450001, China;2.Yellow River Laboratory (Zhengzhou University), Zhengzhou 450001, China;3.Underground Engineering Institute, Zhengzhou University, Zhengzhou 450001, China;4.Yellow River Laboratory (Henan), Zhengzhou 450001, China;5.National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China;6.Collaborative Innovation Center for Disaster Prevention and Control of Underground Engineering Jointly Built by Provinces and Ministries, Zhengzhou 450001, China;7.Fifth Engineering Co., Ltd., China Railway Seventh Group, Zhengzhou 450016, China

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为了研究在有水环境下注浆时水分子参与交联反应对高聚物注浆材料交联过程和微观结构特性的影响,构建了具有不同水分子质量分数的交联聚氨酯模型,采用分子动力学模拟方法,计算了不同含水量体系的参与交联反应的水分子数量、玻璃转变温度和自由体积,并提出一种计算交联分布均匀度的方法。结果表明:随着含水量增加,参与交联反应的水分子数先增大后趋于稳定,这是因为水分子团簇的体积随着水分子质量分数增加不断增大,限制了水分子参与交联反应。含水量越高,交联聚氨酯的玻璃转变温度越低,自由体积越小。水分子参加交联改善了体系的交联分布均匀性,含水量越高,体系的交联反应分布越均匀。研究结果可为有水环境下高聚物注浆材料反应过程和性能评价以及工程应用中高聚物注浆材料的设计研发提供理论参考。

    Abstract:

    To address the influence of water molecules participating in the crosslinking reaction on the crosslinking process and microstructure characteristics of polymer grouting material in watery environments, cross-linked polyurethane models with different water molecule mass fractions were constructed and molecular dynamics simulations were performed to calculate the number of water molecules participating in the crosslinking reaction, glass transition temperature, and free volume of systems with different water molecule mass fractions. Additionally, a method for calculating the uniformity of crosslinking distribution was proposed. The results show that as the water content increases, the number of water molecules participating in the crosslinking reaction first gradually increase and then stabilize, because the volume of water molecule clusters increases with the increase of water molecule mass fraction, which limits the participation of water molecules in crosslinking reaction. With higher water content, the glass transition temperature of cross-linked polyurethane is lower and the free volume is smaller. Water molecules participating in the crosslinking reaction improve the uniformity of crosslinking distribution in the model. As the water content increases, the crosslinking distribution of the model becomes more uniform. The current results will provide valuable theoretical reference for understanding the reaction process and evaluating the performance of polymer grouting materials in watery environments, as well as for the design and development of these materials in engineering applications.

    参考文献
    相似文献
    引证文献
引用本文

王翠霞,武永深,袁灵修,张超,方宏远,朱朋佳.含水环境高聚物注浆材料交联过程与微观结构演变模拟[J].同济大学学报(自然科学版),2025,53(3):462~470

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-08-05
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2025-04-02
  • 出版日期:
文章二维码