What is the molecular structure of TPU film

Posted on 2020-04-14
  The full name of TPU film: Thermoplastic elastomeric polyester co-polymer, it is an environmentally friendly non-toxic new material, TPU film can be divided into two categories of polyester (Polyester) and polyether (Polyether), the application of each product Widely, TPU film will be the product to replace PVC. . . . This material can be softened at a certain heat, but can remain unchanged at normal temperature.
  Q: What is the molecular structure of TPU film?
  A: It is a linear polymer material produced by the reaction of diisocyanate, macromolecular polyol, and chain extender. It is characterized by repeating urethane groups in the molecular composition, and also contains allophanate, shrink Diurea, and other groups such as ester bonds and ether bonds; from the molecular structure, it is composed of rigid segments and flexible segments alternately, where the rigid segments are obtained by the reaction of diisocyanate and chain extender. The segment is obtained by the reaction of diisocyanate and macromolecular polyol. This special molecular structure makes TPU film have excellent properties that are unmatched by other types of thermoplastic elasticity.
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