基于T1-T2*弛豫相关的聚氨酯橡胶相态结构和动力学特征

郭江峰,MACMILLAN Bryce,BALCOM Bruce

Insights into the Phase Structure and Dynamics of Polyurethane Rubber Using T1-T2* Relaxation Correlation

GUO Jiangfeng,MACMILLAN Bryce,BALCOM Bruce

表3 基于T1-T2*谱计算的75D聚氨酯橡胶不同温度下T1、T2*及信号积分强度

Table 3 T1 and T2* values, and signal intensity integrals of 75D PUR based on T1-T2* spectra at different temperatures

温度/℃ 信号I 信号II 信号III 总信号强度 T1/ms T2*/μs 信号强度 T1/ms T2*/μs 信号强度 T1/ms T2*/μs 信号强度 0 217 20 1.07×106 234 46 2.88×105 225 167 1.61×105 1.52×106 20 217 20 8.81×105 217 51 3.06×105 217 202 2.69×105 1.46×106 40 242 21 7.34×105 242 50 2.83×105 242 219 3.71×105 1.39×106 60 280 21 6.04×105 290 52 2.62×105 280 245 4.38×105 1.30×106 80 355 21 4.98×105 355 55 2.46×105 355 258 4.69×105 1.21×106