Production and characterization of a hybrid PCM-PVC material

The operation of buildings accounts for about 40% of global energy consumption. Thus, improving the energy efficiency of these systems is critical to achieving a sustainable future. In this regard, phase change materials ( PCMs) can be a game-changing ally if used as part of insulation systems. Researchers are looking for alternatives to retain the PCM in place when it changes phase into liquid, absorbing large amounts of thermal energy in the form of latent heat. Aiming to address this need, a hybrid PCM-PVC material was developed in this study. The material is made of PCM in the form of small droplets, homogeneously distributed in a flexible PVC matrix, resulting in a stable material. The material characterization results in a thermal conductivity of 0.154 W/m K, with a phase change zone between 46 and 55 °C. The material underwent up to 200 heating cycles between 20 and 100 °C, with no evidence of PCM leakage or significant mass change. The hybrid PCM-PVC’s characteristics make it a feasible alternative for various thermal insulation applications.