PbO-PbBr_2-PbF_2-P_2O_5系统玻璃的性质  

The Properties of Glasses in the PbO-PbBr_2-PbF_2-P_2O_5 System

作　　者：赵宏生[1] 周万城[1] 朱冬梅[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《功能材料》2000年第2期191-193,共3页Journal of Functional Materials

基　　金：国家自然科学基金!资助项目 ( 59772 0 0 5)

摘　　要：对新研制的PbO -PbBr2 -PbF2 -P2 O5 系铅卤磷酸盐玻璃的化学成分以及玻璃转变温度、密度、抗潮解性和紫外光谱等性质进行了分析。结果表明 ,PbO -PbBr2 -PbF2 -P2 O5 系铅卤磷酸盐玻璃具有较低的玻璃转变温度 ,较好的抗潮解性 ,密度在 5.0 g·cm- 3以上 ,并且在可见光区域具有较好的透光率。A series of new glasses in the PbO-PbBr 2-PbF 2-P 2O 5 system has been prepared and characterized.The chemical composition,glass transition temperature,densities,UV/Visible transmittances and the chemical stabilities against water of the glasses were measured.Results show that the PbO-PbBr 2-PbF 2-P 2O 5 system has a low glass transition temperature,being below 250℃.The lowest glass transition temperatures is as low as 210℃.There existed a serious loss of F and P when glasses were melted.Some of the new PbO-PbBr 2-PbF 2-P 2O 5 glasses are durable in ambient atmosphere and have densities up to 5.8g·cm -3 .The introduction of PbO can improve the chemical stabilities against water and the densities of the glass in the PbBr 2-PbF 2-P 2O 5 system,while the glass transition temperature being decreased.The UV cutoffs of PbBr 2-PbF 2-P 2O 5 binary glasses are around 273nm,while those of the glasses in the PbBr 2-P 2O 5 and PbBr 2-PbF 2-P 2O 5 systems are around 389nm.The addition of 10mol% PbO does not change the UV cutoffs of PbBr 2-PbF 2-P 2O 5 glasses.

关 键 词：铅卤磷酸盐玻璃 化学成分 性质 

分 类 号：TQ171.718[化学工程—玻璃工业]