等离子体采暖管道防腐涂层的耐腐性及费用分析

Corrosion Resistance and Cost of Plasma Anticorrosion Coating for Heating Pipeline

采用氯化铝、甲基丙烯磺酸钠、水解聚马来酸酐和水制成活性液,并添加羟基化多壁碳纳米管,采用等离子体喷涂到采暖管道表面形成防腐涂层。通过热喷涂试验验证这种涂层的抗高温腐蚀能力,并应用计价模型进行费用分析。结果表明,热腐蚀状态下新型涂层的质量增加率较低,加温到100 h时管道受腐蚀速度减慢,说明到一定时间节点时,涂层中的活性液被激发出的活性基团增多,羟基化多壁碳纳米管的性能也随之激发,阻垢缓蚀性能增强,表明这种涂层能有效提升采暖管道的耐久性、降低维护成本。同时,新型涂层造价比现有涂层低13.55元/m^(2),具有较强的经济适用性。

Aluminum chloride,sodium methacryl sulfonate,hydrolyzed polymaleic anhydride and water were used to prepare active liquid,and hydroxylated multi-walled carbon nanotubes were added.Plasma spraying was used to form anticorrosive coating on the surface of heating pipeline.The high temperature corrosion resistance of this coating was verified by thermal spraying test,and the cost analysis was carried out by using the valuation model.The results show that the mass increase rate of the new coating is low under the condition of hot corrosion,and the corrosion rate of the pipeline slows down when heated to 100 h,indicating that at a certain time point,the active group of the active liquid in the coating is increased,the performance of hydroxylated multi-walled carbon nanotubes is also stimulated,and the scale and corrosion inhibition performance is enhanced,indicating that the coating can effectively improve the durability of the heating pipeline and reduce the maintenance cost.At the same time,the new coating cost is 13.55 Yuan lower than the existing coating,which has strong economic applicability.