Production and characterization of a hybrid PCM-PVC material

Abstract The operation of buildings represents about 40% of energy consumption worldwide. Thus, finding solutions to improve energy efficiency in 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 PVC flexible matrix, forming 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 was subjected to up to 200 heating cycles between 20 and 100°C, showing no evidence of PCM leakage or significant changes in its mass. The characteristics of the hybrid PCM-PVC make it a promising candidate in various thermal insulation applications.