本文以水性聚乙烯醇(PVA)为粘合剂,原位法合成的AgBr或AgBrI为光敏元,考察了4-羟基-6-甲基-1,3,3a,7-四氮茚钠盐(NaTAI)对以苯并三氮唑银为银源的PTG材料感光性能的影响.实验结果表明:NaTAI对PTG材料具有增感作用,其增感程度随着NaTAI用量的不同而改变,并且感光度升高的同时,灰雾没有明显升高.通过Dember光电压衰减测量,并结合对PTG材料乳液pH值和pAg值的测定以及紫外可见吸收光谱分析,引入NaTAI可以延长光电子寿命,有利于提高潜影形成效率,从而提高感光度.
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