【摘要】 首先研究了颜填料的折光指数、含量和粒径等因素对涂层反射率的影响,通过正交分析实验,获得了浅色系涂料的优化配方;进一步分析了颜填料的光谱属性与反射率之间的关系,并利用现有颜填料数据库,开发出五种深色系的具有近红外高反射的颜填料。实验结果为:浅色系涂料的优化配方为(质量分数)金红石钛白粉25%,白色陶瓷微珠13%,重钙10%;颜填料折光指数越大,热反射性能越好;添加高反射颜填料制得的节能涂料与同色系普通涂料相比,平衡温度下降了10～20℃,表面吸收的热量大幅降低。更多还原

【Abstract】 Three properties of a pigment which affect the reflectance of coatings—refractive index,content and particle size—have been investigated.An optimum formulation for light-color coatings was obtained by the orthogonal design method.Further analysis of the relationship between the spectra and the values of reflectance was carried out in order to develop new species of dark-color pigments with high near-infrared reflectance.Consequently,five dark-color pigments were prepared.The results suggested that the optimum formulation involved rutile type titanium dioxide with 25% weight content,white ceramic microspheres with 13% weight content and heavy calcium carbonate with 10% weight content.The refractive index varied in direct proportion to the heat-reflective performance;compared to normal coatings,the back temperatures of coatings mixed with these highly reflective pigments were lowered by 10-20 ℃,which implied a significant decrease in absorbed energy on the face of the samples.更多还原