新型太阳热反射隔热涂料的研制  

DEVELOPMENT OF NEW TYPE SOLAR HEAT REFLECTING INSULATING COATING

作　　者：陆洪彬[1] 陈建华[2,3] 冯春霞[1] 李文丹[3] 焦宝祥[1] 

机构地区：[1]盐城工学院生态环境材料省重点实验室,盐城224003 [2]常熟理工学院新型功能材料省重点实验室,常熟215500 [3]南京工业大学材料科学与工程学院,南京210009

出　　处：《太阳能学报》2008年第12期1522-1527,共6页Acta Energiae Solaris Sinica

基　　金：江苏省墙改与建筑节能科研项目(No3);江苏省生态环境材料重点实验室开放基金(XKY2006014)

摘　　要：以硫酸钛为钛源,采用非均相沉淀法制备二氧化钛包覆粉煤灰漂珠新型节能材料。主要研究了温度、pH值对二氧化钛包覆粉煤灰漂珠包覆效果的影响。通过 SEM、EDS、XRD、白度、产率、热反射比的测试与分析,确定了包覆反应的最佳工艺参数。研究结果表明:当反应体系温度为70℃,pH 值等于7时,所制备的二氧化钛包覆粉煤灰漂珠产率达98%,粉煤灰漂珠表面包覆层均匀,完整,XRD 显示包覆层主晶相为锐钛矿型二氧化钛;利用该二氧化钛包覆粉煤灰漂珠制备太阳热反射隔热涂料的热反射比达97%。The new energy-saving materials of fly-ash floating bead coated titania were prepared with titanous sulfate as titanium source by heterogeneous precipitation method. The influence of temperature and pH value on the coating effect of fly-ash floating bead coated titania were mainly studied. The optimal technology of coating reaction was determined with the measurement and analysis of SEM, EDS, XRD, whiteness, yield, heat reflectance. The results show that the yield of the prepared fly-ash floating bead coated titania is as high as 98%, and the coated layer on fly-ash floating bead is uniform and complete when the reaction temperature is 70℃ and pH value is 7.0. It is analyzed in XRD that the main crystal phase of the coated layer is anatase-type titania. The heat reflectance of the heat reflecting insulating coating which is prepared by the fly-ash floating bead coated titania in the conditions above can reach up to 97%.

关 键 词：粉煤灰漂珠 二氧化钛 非均相沉淀法 包覆 

分 类 号：TU551.3[建筑科学—建筑技术科学] TQ420.62[化学工程]