两种不同银源的光敏热成像材料感光性能对比  

Photographic Performance Comparison of Two Different Silver Source PTG Materials

作　　者：李秋艳[1,2] 李金培[1] 

机构地区：[1]中国科学院理化技术研究所,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《影像科学与光化学》2010年第4期254-264,共11页Imaging Science and Photochemistry

基　　金：国家自然科学基金(20873168)

摘　　要：本文考察了以苯并三氮唑银为银源与以硬脂酸银为银源的水基型PTG材料感光性能的差异,采用了原位法和异位法两种方法来制备不同的PTG材料,并采用了加热显影与湿法显影两种方法显影,结果显示以AgBTA为银源的PTG材料的感光度都比以AgSt为银源的PTG材料的感光度高.通过对乳液pH值和pAg值以及Dember光电压的测定,发现显影过程中以AgSt为银源的PTG材料显影程度要比以AgBTA为银源的PTG材料显影程度高,潜影形成过程中AgBTA体系的潜影形成效率比AgSt体系的潜影形成效率高,导致最终实验结果是以AgBTA为银源的PTG材料的感光度比以AgSt为银源的PTG材料的感光度高.Two different water-coated photothermographic materials based on silver benzotriazole and silver stearate have been studied,which are prepared by two methods of in-situ and ex-situ and get pictures by thermal developed and wet developed separately.It is found that the sensitivity of the PTG materials based on silver benzotriazole is higher than that based on silver stearate.According to the measurements of pH,pAg of the emulsion and the decay of Dember photovoltage,it is analyzed that the developing level of the PTG materials based on silver stearate is higher than that based on silver benzotriazole in developing process.While the latent image formation efficiency of silver benzotriazole system is higher than silver stearate system in latent image formation process,which finally result in the sensitivity of the PTG materials based on silver benzotriazole is higher than that based on silver stearate.

关 键 词：光敏热成像材料(PTG) 苯并三氮唑银 硬脂酸银 感光性能 

分 类 号：TQ571[化学工程—精细化工]