Hodul Jakub, Mészárosová Lenka, Drochytka Rostislav
Faculty of Civil Engineering, Institute of Technology of Building Materials and Components, Brno University of Technology, Veveri 95, 602 00 Brno, Czech Republic.
Materials (Basel). 2022 Apr 29;15(9):3235. doi: 10.3390/ma15093235.
New types of highly chemically resistant coating systems, primarily intended for concrete and metal substrates, were designed and experimentally verified in the paper. Secondary raw materials in optimal amounts, including solidified hazardous waste (e.g., end product and cement bypass dust), were used as microfillers. The polymer coating systems, containing pre-treated hazardous waste (HW), showed high abrasion resistance and excellent adhesion to metal and concrete surfaces. Based on polyurethane and epoxy resins, the coatings can be used in environments where aggressive chemical media act, such as sewers and the chemical industry. The developed polymeric coating systems showed even better properties than the compared reference coating systems. The chemical resistance of the three-layer coating systems was evaluated both visually and based on changes in mechanical properties, such as hardness and adhesion. The microstructure of the coating systems was also monitored using a digital optical microscope and a scanning electron microscope with energy dispersive X-ray analysis (SEM-EDX) after chemical stress. It was observed that the particles of HW were fully incorporated into the polymer matrix of the coating systems.
本文设计了主要用于混凝土和金属基材的新型高耐化学性涂层体系，并进行了实验验证。使用了最佳用量的二次原料，包括固化的危险废物（如最终产品和水泥旁路粉尘）作为微填料。含有预处理危险废物（HW）的聚合物涂层体系表现出高耐磨性以及对金属和混凝土表面的优异附着力。基于聚氨酯和环氧树脂，这些涂层可用于存在侵蚀性化学介质的环境，如下水道和化工行业。所开发的聚合物涂层体系表现出比所比较的参考涂层体系更好的性能。通过视觉观察以及基于硬度和附着力等机械性能的变化，对三层涂层体系的耐化学性进行了评估。在化学应力作用后，还使用数字光学显微镜和带有能量色散X射线分析的扫描电子显微镜（SEM-EDX）对涂层体系的微观结构进行了监测。观察到HW颗粒完全融入了涂层体系的聚合物基体中。
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