【摘要】 在 40℃、6 0℃、80℃和 10 0℃的热水环境中 ,分别对 Bayer- PC、Japan- PC、Korea- PC三种聚碳酸酯透明板材进行了热水老化实验研究。在老化时间 0～ 2 0 0 h内 ,共取样 9次 ,研究了三种 PC在热水老化过程中的吸水规律、不同热水老化条件对 PC表面微观破坏形貌的影响 ,讨论了 PC热水老化机理。结果表明 :PC的含水量随着时间的延长而增大 ,最终趋于平衡 ;温度越高 ,平衡含水量越大 ;时间越长或温度越高 ,PC吸水试样表面的微缺陷越多 ;由于 PC的水解 ,导致平衡含水量 Mm 和扩散系数 Dx 的理论估算值低于实验值更多还原

【Abstract】 In the hot water of 40℃, 60℃, 80℃ and 100℃, the hot water aging of Bayer PC, Japan PC and Korea PC was investigated. The number of samples is 9 in the aging time of 0~200 h. The law of water absorption in the process of hot water aging and the effects of different hot water aging conditions on the surface fracture appearances of PCs were studied. The hot water aging mechanism of PCs was discussed. The results show: (1) with increasing of time and temperature, the moisture content increases and goes a equilibrium value; (2) the number of microcavities increases progressively with the time and temperature; (3) because of the hydrolysis of PCs, the theoretical values of equilibrium moisture M m and diffusivity D x are higher than the experimental values.更多还原