本文利用小角激光散射(SALS),偏光显微镜(PLM)、X射线衍射(WAXD)、热分析(DSC)和扫描电镜(SEM)等手段研究了共聚醚型聚氨酯的球晶生成规律。第一次利用本体熔融志直接转移退火结晶的方法在很宽的温度范围内得到了明显的球晶。球晶的半径及形态随着硬段含量,退火温度和时间等因素的变化而变。笔者认为在此体系中相分离速率和硬段结晶速率大小之比是影响能否生成球晶的决定性因素。 In this paper, the spherulite formation of copolyether polyurethanes was studied by means of SALS, PLM, WAXD, DSC and SEM. For the first time, the method of directly transferring the annealing crystallization by bulk melting leads to obvious spherulites over a wide temperature range. Spherulite radius and shape with the hard segment content, annealing temperature and time and other factors change. In my opinion, the ratio of the phase separation rate to the rate of hard segment crystallization rate in this system is the decisive factor that affects whether spherulites can form or not.