Electrocaloric Properties of PVDF-HFP Composites for Cooling Systems

Abstract

Electrocaloric cooling technologies play an important role in the development of environmentally-friendly technology of zero-CFCs waste gas with greater cooling efficiency. They are applied in several fields such as cooling for meals, automobiles, residences, and industrial environments. The electrocaloric effect is the exothermal and endothermal on ferroelectric material when it was applied/ejected external electric field, according to Maxwell's relation. In the electrocaloric literature, it has spread developed in several approaches. This study is aimed to reduce Curie temperature and enhance temperature change on electrocaloric PVDF-HFP by interfacial phase engineering such as filler nanocomposites and biaxial stretch technique. Three PVDF-HFP behaviors of induced, reduced, and kept the ordinary crystallization, affected temperature change enhancement. The effect of how strong boding interaction on interfacial filler-polymer was noticed on Curie temperature reduction, depending on filler types. The deep-understanding of Curie temperature reduction and temperature change enhancement by tailored microstructure can extrapolate electrocalorie performance for the novel electrocaloric cooling technology in the future.