What is PU

PU (Polyurethane) is a synthetic material that is widely used in various industries, including construction, automotive, furniture, and packaging. It is a versatile material that can be formulated to provide a range of physical properties, including durability, flexibility, and thermal resistance. PU is typically produced by reacting a polyol with an isocyanate in the presence of a catalyst and other additives. The resulting polymer has a urethane linkage in its backbone, which gives it its characteristic properties. PU is often categorized as either thermosetting or thermoplastic, depending on its crosslinking state. Thermosetting PU has a three-dimensional network structure that cannot be melted or remolded, while thermoplastic PU can be melted and remolded. PU is often chosen for its durability, elasticity, and resistance to oils, solvents, and abrasion. It can be formulated to be soft and rubbery or hard and rigid, depending on the application.