| 摘要 |
PURPOSE: The polyurethane has high-temperature-resistance and is thus extrudable at high temperatures when it contains diamine mixture. CONSTITUTION: An extrudable urea-extended thermoplastic polyurethane elastomer is formed from at least one aliphatic diisocyanate, at least one polyester glycol of polyether glycol, and diamine curing agent. At least one second diamine curing agent and/or at least one extrusion processing aid may be included. The polyurethane is also strong and durable. The polyurethane can be liquid-cast, injection-molded, transfer-molded, sprayed, and extruded without changing either the chemistry or stoichiometry of the polyurethane. The polyurethane may be used for making vehicle air bags or other any application for thermoplastic urethanes which requires increased thermal stability. |
