SYNTHESIS, CHARACTERIZATION AND MECHANICAL PROPERTIES OF POLYETHER-BASED ALIPHATIC POLYURETHANE ELASTOMERS COMPOSED OF HYPERBRANCHED POLYESTER SEGMENTS
具有超支化结构的聚醚型脂肪族聚氨酯弹性体的合成与表征及力学性能研究

Aliphatic polyether-based polyurethane(PU) elastomers with hyperbranched polyester segments were synthesized by prepolymer process from polytetramethylene ether glycol,hydroxyl-terminated hyperbranched polyester(HB-20),IPDI and 1,4-butanediol.The crosslinking density of the PU elastomer was calculated by using the Flory-Rehner equation.The degree of hydrogen bonding,the microstructure and the morphologies of these PU materials were characterized by means of FTIR,WAXD and DSC,respectively.The experimental re...