Zhumadilova Zhanar O, Selyaev Vladimir P, Nurlybayev Ruslan E, Orynbekov Yelzhan S, Sangulova Indira B, Kuldeyev Erzhan I
Institute of Architecture and Civil Engineering, Satbayev University, 22a Satpaev St., Almaty 050013, Kazakhstan.
Department of Building Constructions, Ogarev Mordovia State University, 68 Bolshevitsk St., 430005 Saransk, Russia.
Polymers (Basel). 2022 Apr 19;14(9):1650. doi: 10.3390/polym14091650.
It is generally accepted that the color and performance characteristics of liquid thermal insulation coatings are affected by the combined effect of various climatic factors such as solar radiation, temperature fluctuations, moisture, precipitation and others. This work presents the results of a scientific study of the full-scale exposure of coatings with regard to climatic ageing. Methods have been carried out, such as: spectrophotometry and direct scanning; determining adhesion, determining the adhesion strength of facing and protective coatings; and thermal conductivity and thermal resistance. As the results of the research work have shown, only in situ climatic tests, accompanied by the obligatory recording of the aggressive factors affecting the coating, make it possible to assess changes in the properties of epoxy coatings in full-scale conditions and, consequently, their climatic resistance by the methods of spectrophotometry and direct scanning. The ageing of polymer composites is known to be accompanied by a change not only in elasticity but also in color. Of the epoxy coatings tested, Etal-45M showed the greatest color variation during the in situ climate test. The most decorative resistant coatings are obtained using epoxy resin ED-20 + modified epoxy resin Etal-1440N.
一般认为，液体隔热涂料的颜色和性能特征受太阳辐射、温度波动、湿度、降水等各种气候因素的综合影响。这项工作展示了涂料在气候老化方面全尺寸暴露的科学研究结果。已开展了多种方法，如：分光光度法和直接扫描；测定附着力、饰面和防护涂层的附着强度；以及热导率和热阻。研究工作结果表明，只有现场气候试验，并强制记录影响涂层的侵蚀性因素，才有可能通过分光光度法和直接扫描方法全面评估环氧涂层在实际条件下的性能变化，进而评估其耐候性。众所周知，聚合物复合材料的老化不仅伴随着弹性变化，还伴随着颜色变化。在所测试的环氧涂层中，Etal - 45M在现场气候试验期间颜色变化最大。使用环氧树脂ED - 20 + 改性环氧树脂Etal - 1440N可获得装饰性最强的耐候涂层。
