The structural segment containing the urethane group is a repeating unit, and is combined with a long-chain polyol and a short-chain polyol (chain extender) to form a molecular chain structure of a hard segment and a soft segment, which is the basic structure of the tpu resin price. The molecular chain structure of tpu resin price (secondary structure): macromolecular diol and isocyanate are linked to form a long molecular chain. Because the molecular chain is long and appears flexible, it becomes a soft segment structure in the entire molecular chain. The short-chain diol (chain extender) and the isocyanate are linked into a short-chain structure, and since the chain is short and appears rigid, it becomes a hard segment structure in the molecular chain. The special structure of the hard segment and soft segment gives the tpu resin price a unique property of both elasticity and good mechanical properties and thermoplastic processing, which makes tpu resin price widely used as a new type of polymer material between plastic and rubber. application. For the selection of different macropolyols, chain extenders and polyisocyanates, a wide variety of tpu resin price products with various properties can be obtained.