摘要
为解决低温热致相变性VO_(2)(M)智能窗材料实际应用对绿色节能生产技术的需求,借助偏心振动磨作为预处理分散设备,以V_(2)O_5和酸为原料,优化了固相法合成VO_(2)(M)的合成工艺,研究了Mo/F共掺型低温热致相变V_(1-x)Mo_(x)O_(2-y)F_(y)材料的制备工艺及Mo/F掺量对VO_(2)(M)的相变调控规律,评价了其光学及隔热性能。结果显示10 min/10.0 g原料的研磨时间和750℃的焙烧温度下可获得纯相VO_(2)(M)。以钼酸铵和氟化铵为Mo/F共掺原料,可获得相变温度随掺量呈规律性下降的低温热致相变V_(1-x)Mo_(x)O_(2-y)F_(y)(M),2%Mo和3%F掺杂后VO_(2)(M)相变温度降低至38.20℃。VO_(2)(M)和V_(1-x)Mo_(x)O_(2-y)F_(y)(M)粒径在300 nm左右,热致回宽(ΔT_c)介于之间6.1~7.9℃之间,显示了灵敏的热致相变能力。V_(1-x)Mo_(x)O_(2-y)F_(y)(M)/PVB复合薄膜可见光透过率48.7%,具有良好的隔热效果。
In order to solve the demand for green energy-saving production technology for the practical application of low-temperature thermally induced phase change VO_(2)(M)smart window materials,the synthesis process of VO_(2)(M)synthesis by solid-phase method was optimized with the help of eccentric vibration mill as pretreatment and dispersion equipment and using V 2O 5 and piperic acid as raw materials.The preparation process of Mo/F co-doped low-temperature thermally induced phase change V_(1-x)Mo_(x)O_(2-y)F_(y)material and the phase transition regulation law of VO_(2)(M)by Mo/F content were studied,and its optical and thermal insulation properties were evaluated.The results showed that pure phase VO_(2)(M)could be obtained at the grinding time of 10 min/10.0 g raw materials and the roasting temperature of 750℃.With ammonium molybdate and ammonium fluoride as Mo/F co-doped raw materials,a low-temperature thermally induced phase transition V_(1-x)Mo_(x)O_(2-y)F_(y)(M)with a regular decrease in phase change temperature with the dosage can be obtained,and the VO_(2)(M)phase transition temperature is reduced to 38.20℃after doping of 2at%Mo and 3at%F.The particle size of VO_(2)(M)and V_(1-x)Mo_(x)O_(2-y)F_(y)(M)is about 300 nm,and the thermal return width(ΔT c)is between 6.1-7.9℃,showing sensitive thermally induced phase transition ability.V_(1-x)Mo_(x)O_(2-y)F_(y)(M)/PVB composite film has a visible light transmittance of 48.7%,which has a good thermal insulation effect.
作者
刘党豪
孟晓荣
张丽萍
吴娇
杜金晶
王斌
朱军
LIU Danghao;MENG Xiaorong;ZHANG Liping;WU Jiao;DU Jinjing;WANG Bin;ZHU Jun(School of Environmental and Municipal Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;School of Chemistry and Chemical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;School of Metallurgical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China)
出处
《功能材料》
CAS
CSCD
北大核心
2024年第4期4127-4134,共8页
Journal of Functional Materials
基金
陕西省区域创新能力引导计划项目(2022QFY10-04)。
关键词
偏心振动磨
Mo/F掺杂
二氧化钒
智能窗
eccentric vibrating mill
Mo/F doping
vanadium dioxide
smart windows
