化工进展 ›› 2024, Vol. 43 ›› Issue (S1): 419-430.DOI: 10.16085/j.issn.1000-6613.2024-0620

• 材料科学与技术 • 上一篇    下一篇

路用复合相变材料及相变改性沥青性能评价

杜小聪1,2(), 辛春福1(), 赵钰1,3   

  1. 1.内蒙古大学交通学院,内蒙古 呼和浩特 010070
    2.中国铁路太原局集团有限公司,山西 太原 030001
    3.内蒙古自治区综合交通运行监测与应急指挥中心,内蒙古 呼和浩特 010020
  • 收稿日期:2024-04-12 修回日期:2024-07-02 出版日期:2024-11-20 发布日期:2024-12-06
  • 通讯作者: 辛春福
  • 作者简介:杜小聪(1997—),男,硕士研究生,研究方向为绿色道路新材料研发与设计。E-mail:dxcsxht@163.com

Performance evaluation of composite phase change materials and phase change modified asphalt for road use

DU Xiaocong1,2(), XIN Chunfu1(), ZHAO Yu1,3   

  1. 1.College of Transportation, Inner Mongolia University, Huhhot 010070, Inner Mongolia, China
    2.China Railway Taiyuan Bureau Group Corporation, Taiyuan 030001, Shanxi, China
    3.Comprehensive Traffic Operation Monitoring and Emergency Command Center of Inner Mongolia Autonomous Region, Huhhot 010020, Inner Mongolia, China
  • Received:2024-04-12 Revised:2024-07-02 Online:2024-11-20 Published:2024-12-06
  • Contact: XIN Chunfu

摘要:

沥青路面在极端温度下会产生高温车辙、低温开裂等问题,发展复合相变材料对提高沥青的调温性能具有重要意义。为进一步推进沥青路面调温技术的发展,延长相变材料在沥青中的生命周期。首先,本文对路用复合相变材料的组成成分进行介绍。其次,对复合相变材料的制备工艺进行对比。在此基础上,主要从沥青路面的调温性能以及复合相变材料掺入对沥青路面造成的影响展开讨论。梳理发现,载体是决定复合相变材料导热能力和耐久性的关键因素。因此,确定复合相变材料载体后针对不同的载体材料选择相应的制备方法至关重要。在载体中使用具有高导热性的碳基材料,不仅可以提高复合相变材料的抗渗漏性能,还能提高复合相变材料的导热能力。目前,复合相变材料在沥青中虽具有一定的调温性能,但仍然存在储热能力低和抗渗漏性能不足的缺点,未来研究可以在明确复合相变材料与沥青相容的基础上,研发更具有针对性的路用复合相变材料,进而制定统一的相变评价标准和方法。

关键词: 复合材料, 绿色道路, 相变材料, 制备工艺, 沥青路面

Abstract:

Asphalt pavement will produce high-temperature rutting, low-temperature cracking and other diseases in the extreme temperature environment, and the development of composite phase change materials is of great significance to improve the temperature regulation performance of asphalt, to further advance the development of thermoregulation technology for asphalt pavements and to improve the life cycle of phase change materials in asphalt. First, the composition of composite phase change materials for road use was introduced. Second, the preparation process of composite phase change materials was compared. On this basis, the discussion was mainly based on the temperature-regulating performance of asphalt pavement and the influence caused by the blending of composite phase change materials on asphalt pavement. It was sorted out that the carrier was a key factor in determining the thermal conductivity and durability of composite phase change materials. Therefore, after determining the composite phase change materials carrier, it was crucial to choose the appropriate preparation method for different carrier materials. The use of carbon-based materials with high thermal conductivity in the carrier can not only improve the leakage resistance of composite phase change materials, but also improve the thermal conductivity of composite phase change materials. At present, although composite phase change materials had certain temperature regulation performance in asphalt, they still had the shortcomings of low heat storage capacity and insufficient leakage resistance. In the future, on the basis of clarifying the compatibility of composite phase change materials with asphalt, more targeted composite phase change materials for road use can be developed, and then a unified phase transformation evaluation standard and method can be formulated.

Key words: composites, green roads, phase change materials, preparation process, asphalt pavements

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