CHAIN EXTENDED ENERGETIC POLYURETHANE THERMOPLASTIC ELASTOMERS WITH AZIDO-DIOL

摘要

PURPOSE: An energy-containing polyurethane thermoplastic elastomer is provided to impart mechanical properties and to maximize the intensity of energy by replacing a non-energy component forming urethane hard segments having excellent mechanical properties with energy-containing components. CONSTITUTION: A polyurethane thermoplastic elastomer comprises repeating units represented by chemical formula 1. In chemical formula 1, P is an energy-containing polyol having a molecular weight of 1000-6000; P' is an existing polyol having a molecular weight of 1000-8000; U is urethane formed from diisocyanate; CE are azido diol chain extenders; SS are soft segments; HS are hard segments; and m is the number of repeating units. The azido diol chain extenders are 3-azodopropane-1,2-diol or 2,2-bis(azidomethyl)propane-1,3-diol.