摘要
目的制备着色型空心玻璃微珠,从而减少涂料制备过程中有色颜料的加入,达到提高深色系涂料太阳热反射率的效果.方法通过双覆层包膜法对空心玻璃微珠表面进行双层覆膜,首层为光泽度较高的TiO2薄膜,二层为Fe2O3膜,属于有色物质膜,制备着色型空心玻璃微珠,并对比其与包覆前空心玻璃微珠的性能,对涂料配方进行优化.结果双包覆空心玻璃微珠的添加量在10%～15%时制得的涂料反射率最高,与没有添加空心微珠的试样涂料相比,可提高17%左右;m(双包覆空心微珠)∶m(金红石型钛白粉)∶m(中铬黄)=12∶9∶0.2的比例制备金色涂料效果较好,太阳光反射比高达87.1%.结论分离后再包覆Fe2O3的方法其样品色泽及分散稳定性更好,Fe2O3包覆层可吸收部分入射光,TiO2包覆层可散射入射光,以此空心玻璃微珠制备隔热涂料能显著提高涂料的热反射率,并改善涂料的耐老化性及耐水性.
The colored hollow glass beads was prepared. As a filler prepared insulation coatings, it could reduce the colored pigment added and improve the heat-reflective of brunet reflective exterior insulation coating. The hollow glass bead was coated by a high-gloss surface coating layer of TiO2 film on its surface by method of the double-cladding ways, and then a layer of colored coating Fe2 O3. Compared of the coated hollow glass beads before and after and optimized the test for coating formulations to determine the optimal coating formulation. The results showed that the double-coated hollow glass beads of a volume of 10% - 15% added of the coating obtained the highest reflexible. Compared to samples with no added hollow bead coating,it can be improved about 17% and the gold coating of a ratio of m（ double-coated hollow microspheres） ： m（ ruffle TiO2 ） ： m（ medium chrome yellow） equivalent to 12： 9： 0. 2 had a preferably effect with solar light reflecting ratio of 87.1%. At last, the method of separated and then coated F2 O3 had the better dispersion and colour of the sample. The former of coating layer could absorb part of the incident light, and the latter could scatter the incident light. The insulation coatings prepared with high reflectivity and anti-aging and water-resistant performance improved significantly.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2012年第2期291-297,共7页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(51072122)
住房和城乡建设部项目(2010-K1-28)
辽宁省教育厅创新团队项目(2008T162)
关键词
双覆层包覆法
空心玻璃微珠
隔热涂料
反射率
double cladding coating method
hollow glass bead
thermal insulation coatings
reflectivity
