The use of industrial wastes such as thermal power plant fly ash can reduce the environmental risk. The fly ash properties are useful and can contribute to organic coatings. This paper examines a new strategy for coatings that protect steel structures from the effects of fire while enhancing mechanical properties. The aim of this study was to show that the fly ash additive can be a partial replacement for other conventional additives while also having a flame retardant effect. To study the effectiveness of the use of fly ash additives, we have sought to combine them with nanoadditives. Specifically, we study the synergy of fly ash with multi-wall carbon nanotube additives to reinforce the coating on the system: epoxy Epikote 240/ammonium polyphosphate (APP)/pentaerythritol (PER), and melamine. Content of fly ash was studied: 10 wt.% with 0.5, 1, and 1.5 wt.% of multi-wall carbon nanotubes (MWCNTs). The results prove that the synergies between fly ash and multi-wall carbon nanotubes increase the fire resistance to increase the protection of steel structures of the building. When using 10 wt.% fly ash and 1 wt.% MWCNTS, the coating can be considered as a flame retardant material with UL 94V-0 fire resistance and the limiting oxygen index of 27.2%..

中文翻译：

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多壁碳纳米管与粉煤灰协同在Epikote 240环氧树脂基体上制备阻燃纳米复合涂层保护钢结构的研究

利用火力发电厂粉煤灰等工业废弃物可以降低环境风险。飞灰的特性是有用的，并且可以有助于有机涂层。本文研究了一种新的涂层策略，可保护钢结构免受火灾影响，同时提高机械性能。本研究的目的是表明粉煤灰添加剂可以部分替代其他常规添加剂，同时还具有阻燃效果。为了研究使用粉煤灰添加剂的有效性，我们试图将它们与纳米添加剂相结合。具体而言，我们研究了粉煤灰与多壁碳纳米管添加剂的协同作用，以增强系统涂层：环氧 Epikote 240/多磷酸铵 (APP)/季戊四醇 (PER) 和三聚氰胺。研究了粉煤灰的含量：10 wt.% 与 0.5, 1, 和 1.5 wt.% 的多壁碳纳米管 (MWCNTs)。结果证明，粉煤灰与多壁碳纳米管之间的协同作用提高了耐火性，从而增加了对建筑物钢结构的保护。当使用 10 wt.% 粉煤灰和 1 wt.% MWCNTS 时，涂层可被视为具有 UL 94V-0 耐火性和 27.2% 的极限氧指数的阻燃材料。