采用座滴、吊片等间接表面能测试方法,表征分析了固化阶段2种典型环氧树脂体系的表面能变化规律,并对座滴法测得的总表面能极性、色散分量进行了深入研究.结果表明:2种方法测得的环氧618-咪唑体系和环氧5224体系的总表面能随同化时间延长均呈下降趋势,座滴法测得的树脂表面能高于吊片法;座滴法结果表明2种环氧树脂体系表面能极性分量均随时间延长而降低;红外分析表明,环氧618-咪唑体系表面能的极性分量的降低是由于羟基及环氧官能团的减少.
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