动态二硫键自修复聚氨酯改性沥青的制备和性能
作者:
作者单位:

1.重庆工商大学 废油资源化技术与装备教育部工程研究中心,重庆 400067;2.重庆水利电力职业技术学院 建筑工程学院,重庆 402160;3.重庆市智翔铺道技术工程有限公司,重庆 401336

作者简介:

李 璐(1984—), 男, 贵州遵义人, 重庆水利电力职业技术学院教授, 硕士生导师, 博士. E-mail:61718494@qq.com

通讯作者:

李 璐(1984—), 男, 贵州遵义人, 重庆水利电力职业技术学院教授, 硕士生导师, 博士. E-mail:61718494@qq.com

中图分类号:

TU502

基金项目:

重庆市教委科学技术研究计划项目(KJZD-K202303802); 重庆市永川区自然科学基金资助项目(2023yc-jckx20078)


Preparation and Properties of Dynamic Disulfide Bond Self-healing Polyurethane Modified Asphalt
Author:
Affiliation:

1.Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China;2.College of Architecture and Engineering, Chongqing Water Resources and Electric Engineering College, Chongqing 402160, China;3.Chongqing Zhixiang Paving Technology Engineering Co., Ltd., Chongqing 401336, China

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献 [10]
  • |
  • 相似文献 [20]
  • | | |
  • 文章评论
    摘要:

    为提高沥青路面的长期抗开裂性,开发了一种基于动态二硫键自修复聚氨酯改性沥青.以胱胺二盐酸盐为原料合成了含二硫键的聚氨酯扩链剂(CY-OA),再通过分步共聚合成了二硫键交联聚氨酯弹性体(PU-SS),并与沥青混合得到自修复聚氨酯改性沥青(PSA),研究了PU-SS和PSA的物理化学性能、微观形态和自修复性能.结果表明,PU-SS的掺入提高了沥青的低温抗变形能力,其动态二硫键的自修复机制促进了沥青固有的自修复能力,实现了协同修复.

    Abstract:

    In order to enhance the long-term resistance to cracking of asphalt pavement, a self-healing polyurethane modified asphalt based on dynamic disulfide bonds was developed. Polyurethane chain extender containing disulfide bonds (CY-OA) was synthesized using cystamine dihydrochloride as raw material, and disulfide bond-crosslinked polyurethane elastomer (PU-SS) was synthesized through stepwise copolymerization. PU-SS was mixed with asphalt to obtain self-healing polyurethane modified asphalt (PSA). The physical and chemical properties, microscopic morphologies, and self-healing properties of PU-SS and PSA were studied. The results show that the addition of PU-SS improves the low-temperature deformation resistance of asphalt. The dynamic disulfide bond self-healing mechanism of PU-SS promotes the inherent self-healing ability of asphalt, achieving synergistic repair.

    表 3 BA和PSA的自修复性能Table 3 Self-healing properties of BA and PSA
    表 2 BA和PSA的基本性质Table 2 Basic properties of BA and PSA
    图1 CY-OA的合成路线Fig.1 Synthesis route of CY-OA
    图2 BDA-OH的合成路线Fig.2 Synthesis route of BDA-OH
    图3 PU-SS的合成路线Fig.3 Synthesis route of PU-SS
    图4 PSA的制备过程Fig.4 Synthesis process of PSA
    图5 CY-OA、BDA-OH和PU-SS的红外光谱Fig.5 FTIR spectra of CY-OA, BDA-OH and PU-SS
    图6 BA和PSA的红外光谱图Fig.6 FTIR spectra of BA and PSA
    图7 PU-SS的TG-DTG曲线Fig.7 TG-DTG curves of PU-SS
    图8 PU-SS在不同修复时间下的应力-应变曲线和自修复效率Fig.8 Stress-strain curves and healing efficiency of PU-SS at different healing time
    表 1 基质沥青的物性参数Table 1 Physical parameters of BA
    参考文献
    [1] 高鹏永, 陈恩利, 常伟锋, 等. 车路相互作用下沥青路面材料弯曲破坏研究[J]. 建筑材料学报, 2020, 23(4):912-919.GAO Pengyong, CHEN Enli, CHANG Weifeng, et al. Bending failure of asphalt pavement materials under vehicle-road interaction[J]. Journal of Building Materials, 2020, 23(4):912-919.(in Chinese)
    [2] 崔亚楠, 张强, 张翔. 沥青混合料复合小梁宏观与细观疲劳特性分析[J]. 建筑材料学报, 2023, 26(1):85-90.CUI Yanan, ZHANG Qiang, ZHANG Xiang. Analysis of macroscopic and mesoscopicfatigue characteristics of asphalt mixture composite small beam[J]. Journal of Building Materials, 2023, 26(1):85-90.(in Chinese)
    [3] 徐浩, 张文武, 何兆益, 等. 沥青老化及再生对自愈合性能的影响[J]. 建筑材料学报, 2022, 25(10):1070-1076.XU Hao, ZHANG Wenwu, HE Zhaoyi, et al. Influence of asphalt aging and regeneration on self-healing performance[J]. Journal of Building Materials, 2022, 25(10):1070-1076.(in Chinese)
    [4] AL-MANSOORI T, MICAELO R, ARTAMENDI I, et al. Microcapsules for self-healing of asphalt mixture without compromising mechanical performance[J]. Construction and Building Materials, 2017, 155:1091-1100
    [5] 颜可珍, 李慧丽, 洪哲, 等. LDPE/EVA复合改性沥青的流变性能[J]. 建筑材料学报, 2022, 25(4):408-414.YAN Kezhen, LI Huili, HONG Zhe, et al. Rheological properties of LDPE/EVA composite modified asphalt[J]. Journal of Building Materials, 2022, 25(4):408-414.(in Chinese)
    [6] 杜健欢, 任东亚, 艾长发, 等. 沥青混合料低温裂纹扩展演化行为分析[J]. 建筑材料学报, 2022, 25(3):300-306.DU Jianhuan, REN Dongya, AI Changfa, et al. Low temperature crack propagation and evolution of asphalt mixture[J]. Journal of Building Materials, 2022, 25(3):300-306.(in Chinese)
    [7] AGUIRRE M A, HASSAN M M, SHIRZAD S, et al. Laboratory testing of self-healing fibers in asphalt mixtures prepared with recycled materials[J]. Transportation Research Record, 2019, 2673(4):513-523.
    [8] ZHANG M Q, RONG M Z. Intrinsic self-healing of covalent polymers through bond reconnection towards strength restoration[J]. Polymer Chemistry, 2013, 4(18):4878-4884.
    [9] REKONDO A, MARTIN R, RUIZ DE LUZURIAGA A, et al. Catalyst-free room-temperature self-healing elastomers based on aromatic disulfide metathesis[J]. Materials Horizons, 2014, 1(2):37-40.
    [10] LEI Z Q, XIANG H P, YUAN Y J, et al. Room-temperature self-healable and remoldable cross-linked polymer based on the dynamic exchange of disulfide bonds[J]. Chemistry of Materials, 2014, 26(6):38-46.
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

李璐,张贤明,郝增恒.动态二硫键自修复聚氨酯改性沥青的制备和性能[J].建筑材料学报,2024,27(6):514-519

复制
分享
文章指标
  • 点击次数:199
  • 下载次数: 2541
  • HTML阅读次数: 11
  • 引用次数: 0
历史
  • 收稿日期:2023-07-20
  • 最后修改日期:2023-09-13
  • 在线发布日期: 2024-07-11
文章二维码