聚碳酸酯在不同湿热自然环境下的老化行为

Degradation Behavior of Polycarbonate in Different Damp and Heat Natural Environments

对聚碳酸酯(PC)在我国海南琼海及三亚2个典型湿热地区的自然曝露试验结果进行了研究,并利用红外特征指数对PC的老化机理进行了探讨。结果表明:在琼海湿热内陆地区曝晒的PC试样同时发生了氟利斯重排反应和光氧化反应,而在三亚湿热沿海地区曝晒的试样则可能发生了光氧化反应和盐致水解反应。

The results of polycarbonate （PC） weathering in typical damp and heat areas such as Qionghai and Sanya had been studied,and the mechanism of PC weathering had also been investigated by the analysis of FTIR characteristic indexes. The results showed that when exposed in Qionghai,the PC would conduct Fries-rearrangement and photo-oxidation reaction,in the other hand, it could conduct photo-oxidation and salt-introducing hydrolysis reaction.