Fundamental understanding of the thermal properties of amorphous epoxy resin coatings filled with quartz-feldspar powder sourced from quarry waste

Abstract

In the present work, a novel coating modified with quartz-feldspar powder (QFP) was prepared in order to overcome the well-known technical problems related to the thermal behavior of epoxy resin (ER) coatings. The degradation of floor coatings is often caused by thermal shock and depends on the difference in the thermal expansion between the ER coating and the substrate. The thermal expansion is strongly related to the thermal gradient. Therefore, the specimens were tested using differential scanning calorimetry in order to analyze the regions of the viscoelastic behaviors, the glass transition temperature, the specific heat capacity, the slopes of heat capacity, and the energy required to change the temperature of the material. The application of QFP reduced the value and slope of the specific heat capacity of the composite. The modification of the coating inhibits the growth of temperature, which in turn can reduce the risk of delamination caused by thermal shock. It also improves the adhesion of the coating the concrete substrate. The novelty of the article involves a detailed description of the influence of QFP waste on the thermal behavior of ER, as well as its effect on the thermal shock degradation of industrial floor coatings.