Production and characterization of polyurethane/expanded graphite composites for industrial food preservation

Thermal insulation materials extend the shelf life of food and reduce energy consumption. Polyurethane (PU) are often used to keep hot cold. Improving thermal properties PU can significantly contribute savings lower food-related costs in pharmaceutical industries. Polyurethane/expanded graphite (PU/EG) composites were obtained by hot-pressing adding expanded (EG) foams. Composites with 0.05%, 5%, 10% EG characterized Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), thermogravimetric analysis (TGA).