Expanded polystyrene (EPS) is due to its low thermal conductivity coefficient one of the most widely used materials for thermal insulation. During the production of EPS semi-finished products, powder is generated, which currently represents waste as a by-product. This thesis explores a new method of recycling the EPS waste powder by using it as a filler in epoxy resin. The aim of the study was to compare the thermal, rheological, and mechanical properties of the resin with different concentrations of EPS powder filler. We performed isothermal DSC analysis of the curing of pure resin at different temperatures and DSC analysis of the thermal capacity of composites with various filler ratios. Rheological properties were determined by a curing test of the resin at different constant temperatures, providing insight into the changes in viscoelastic properties. Mechanical properties of composites with different filler ratios were evaluated using three-point bending tests. We found that the resin cures faster with increasing temperature. With increasing filler concentration mechanical properties of the composites deteriorate while the thermal insulation properties of the composites improve.
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