黑色颜料品种及掺量对涂料太阳能反射比的影响

Influence of black pigments variety and mixing ratio on solar reflectance of coatings

通过向白色涂料中添加不同黑色颜料的色浆配制灰色系列涂料,然后测试250～2500 nm范围内光谱反射性能。比较研究了添加不同浓度的炭黑、铜铬黑、氧化铁黑、铬铁黑色浆后,各黑色颜料对380～780 nm可见光反射比及太阳能总反射比的影响规律。结果表明,铬铁黑在与金红石钛白粉的综合作用下,其近红外反射能力较强,比较适用于配制高太阳能反射比的深色涂料。

Black color pastes with different black pigments are mixed into white coatings to prepare a series of grey coatings. The spectral reflectance of grey coatings are tested within the scope of 250-2500 nm. Comparisons and study are made on the variation rule of 380-780 um visible light reflectance and total solar reflectance with different black pigments of carbon black, copper chromite black,magnetic iron oxide and iron chromite black. The results show that under the combined function of iron chromite black and futile type titanium dioxide,the near-infrared reflectance is relatively strong,suitable for preparing dark color coatings of high solar reflectance.