多晶硅粉对白色涂层的明度与太阳光反射性能的影响
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摘要
为探索制备低明度热反射涂层的方法,选取不同粒径的硅粉与商业白色热反射涂料混合,制得不同明度建筑节能涂料。考察了硅粉粒径及其添加量对涂层明度及热反射性能的影响,利用X射线衍射仪、扫描电镜、色差仪和紫外/可见光/近红外分光光度计表征了原料的相组成及形貌,以及涂层的Lab色空间值和太阳光反射率。实验结果显示随着硅粉含量增加,涂层的明度迅速降低;其热反射率也下降迅速。但其TSR仍可维持一个较高的水平。硅粉粒径对白色涂层的明度与热反射率影响较小。
Different sizes of silicon powders were mixed with commercial white thermal reflective coatings to prepare low brightness coatings for saving building energy. The effects of particle size and addition amount of silicon powders on the brightness and thermal reflectance of the coatings were investigated. The phase and morphology of silicon powders were characterized by X-ray diffraction,SEM. The Lab and thermal reflectance of the coatings were characterized by colorimeter and UV-Vis-NIR spectrum analyzer. The results indicate that with the increase of silicon powder content,the brightness and thermal reflectance of the coatings decrease gradually,but the high TSR level of the coatings may be maintained. The particle size of silicon powders have not remarkable influence on the brightness and thermal reflectance of white coatings.
Different sizes of silicon powders were mixed with commercial white thermal reflective coatings to prepare low brightness coatings for saving building energy. The effects of particle size and addition amount of silicon powders on the brightness and thermal reflectance of the coatings were investigated. The phase and morphology of silicon powders were characterized by X-ray diffraction,SEM. The Lab and thermal reflectance of the coatings were characterized by colorimeter and UV-Vis-NIR spectrum analyzer. The results indicate that with the increase of silicon powder content,the brightness and thermal reflectance of the coatings decrease gradually,but the high TSR level of the coatings may be maintained. The particle size of silicon powders have not remarkable influence on the brightness and thermal reflectance of white coatings.
引文
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[2]张振江.太阳热反射涂料在新疆储油罐上的隔热性能探讨[J].中国涂料,2014,29(3):70-72+76.
[3]马翔,苏志刚.广州万科某项目绿色技术实践[J].广东土木与建筑,2018,25(8):20-22+61.
[4]赵夏,彭军芝,李滨滨,等.热反射涂料在建筑屋面的应用研究现状和发展[J].福建建材,2017(1):20-21+37.
[5]谢景新.泉州地区建筑外墙节能技术研究[J].福建建材,2012(12):103-104.
[6]杨光,邓安仲,陈静波.中明度建筑节能涂层的制备及性能[J].电镀与涂饰,2017,36(6):301-305+337.
[7]倪正发,郭宇.彩色太阳热反射涂料的研制[J].中国涂料,2014,29(9):53-57.
[8]王志超,崔显林,左娟娟,等.无机复合颜料制备热反射甲板涂料[J].现代涂料与涂装,2013,16(12):1-5+22.
[9]洪仁鹏,李风,曾国勋,等.硅粉对钛镍黄有机硅涂层热反射性能的影响[J].电镀与涂饰,2018,37(14):632-636.
[10]江向阳,曾国勋,杨建坤,等.多晶硅粉对镨黄涂层热反射性能的影响[J].新型建筑材料,2018(10):126-130.
[11]Papadimitrakopoulos F,Wisniecki P,Bhagwagar D E.Mechanically attrited silicon for high refractive index nanocomposites[J].Chemistry of Materials,1997,9(12):2928-2933.