聚氨酯形状记忆聚合物最近，三菱重工株社成功地开发出一种聚氨酯形状记忆聚合物，这种材料在其玻璃化转变温度中有很大的模量变化，即在室温以上的小的温度范围内。在玻璃化转变温度的两端的挠曲模量比率为１００：１或更多，该比率始终保持恒定，即使经过多次热循环后仍... Polyurethane Shape Memory Polymers Recently Mitsubishi Heavy Industries Co., Ltd. successfully developed a polyurethane shape memory polymer which has a large modulus change at its glass transition temperature, i.e., a small temperature range above room temperature Inside. The ratio of flexural modulus at both ends of the glass transition temperature is 100: 1 or more, and the ratio is always constant even after many thermal cycles.