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[目的]预应力钢筒混凝土管(PCCP)埋设环境为地下土壤，亟需研究针对性的腐蚀控制技术。[方法]以低黏度环氧树脂、活性稀释剂、纳米浆料等原材料制备了新型PCCP管道外纳米抗渗长效保护涂层，通过扫描电镜(SEM)和能谱仪(EDS)表征了涂料在砂浆固结体中的渗透行为，并对比了纳米抗渗长效保护涂层与环氧煤沥青涂层的性能。[结果]纳米浆料的添加量为1%(质量分数)时，涂层具备最佳的力学性能。与环氧煤沥青涂层对比，纳米抗渗长效保护涂层具备更强的附着力、耐冲击性和耐蚀性。[结论]该纳米抗渗长效保护涂层可应用于PCCP管道埋设的多种严苛腐蚀环境。
Abstract：[Objective] Prestressed steel cylinder concrete pipes(PCCP) are typically buried in soil environments, necessitating the development of targeted corrosion control technologies. [Method] A novel long-acting impermeable nanocomposite coating for protecting the PCCP exteriors was developed using low-viscosity epoxy resin, reactive diluent, and nanometer slurry. The penetration behavior of the coating in mortar consolidations was characterized by scanning electron microscopy(SEM) and energy-dispersive spectroscopy(EDS). The performance of the long-acting impermeable nanocomposite coating was compared with that of the traditional epoxy coal tar coating. [Result] When the proportion of nanometer slurry was 1%(by mass), the coating showed optimal mechanical properties. Compared with the epoxy coal tar coating, the long-acting impermeable nanocomposite coating exhibited superior adhesion, impact resistance, and corrosion resistance. [Conclusion] This long-acting impermeable nanocomposite coating is suitable for application in various harsh corrosive environments where PCCP pipes are buried.
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基本信息:
DOI：10.19289/j.1004-227x.2025.11.016
中图分类号:TU991.36;TB306
引用信息:
[1]何调林,李越颖,李开岩,等.PCCP管道外纳米抗渗长效保护涂层的制备及其与环氧煤沥青性能的对比[J].电镀与涂饰,2025,44(11):112-118.DOI:10.19289/j.1004-227x.2025.11.016.
基金信息:
环北部湾广东水资源配置工程PCCP管道长效腐蚀控制技术研究与应用