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首页> 外文期刊>RSC Advances >Improvement of near-infrared (NIR) reflectivity and black color tone by doping Zn2+ into the Ca2Mn0.85Ti0.15O4 structure
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Improvement of near-infrared (NIR) reflectivity and black color tone by doping Zn2+ into the Ca2Mn0.85Ti0.15O4 structure

机译：通过掺杂Zn2 +改善近红外（NIR）反射率和黑色色调进入CA2MN0.85TI0.15O4结构

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摘要

Inorganic black pigments with thermal barrier characteristics, Ca2Mn0.85-xTi0.15ZnxO4-x (0 <= x <= 0.10), were synthesized using a conventional solid-state reaction method in order to improve the blackness without decreasing the near-infrared (NIR) reflectance of a Ca2Mn0.85Ti0.15O4 pigment, which was previously reported by our group. The composition was optimized to provide both high blackness and NIR reflection characteristics. As a result, the NIR solar reflectance value (R-NIR) of Ca2Mn0.77Ti0.15Zn0.08O3.92 (R-NIR = 74.6%) became larger than that of Ca2Mn0.85Ti0.15O4 (R-NIR = 71.7%), and the black color tone of the former (L* = 23.2, a* = +2.81, b* = +0.83, C = 2.93) was improved in comparison with that of the latter (L* = 24.4, a* = +4.30, b* = +2.72, C = 5.09). This improvement is caused by the introduction of strain into the [MnO6] octahedra and a decrease in the manganese ion concentration. The R-NIR value of the Ca2Mn0.77Ti0.15Zn0.08O3.92 pigment was also larger than those of the commercially available pigments (R-NIR < 53.0%). Therefore, Ca2Mn0.77Ti0.15Zn0.08O3.92 has potential to be an inorganic black pigment for thermal shielding.
机译：具有热阻特性的无机黑色颜料，使用传统的固态反应方法合成Ca2mN0.85-xTi0.15ZnXO4-x（0 <= x <= 0.10），以改善黑暗而不降低近红外线（ NIR）CA2MN0.85TI0.15O4颜料的反射率，以前由我们的小组报告。优化该组合物以提供高黑度和NIR反射特性。结果，Ca2Mn0.77Ti0.15Zn0.08O3.92（R-Nir = 74.6％）的NIR太阳能反射值（R-NIR）变得大于CA2MN0.85TI0.15O4（R-NIR = 71.7％）和前者的黑色色调（L * = 23.2，a * = +2.81，b * = +0.83，c = 2.93）与后者（l * = 24.4，a * = + 4.30，b * = +2.72，c = 5.09）。这种改进是由菌株引入[MnO6]八面体的引入和锰离子浓度的降低引起的。 CA2MN0.77TIO.15ZN0.08O3.92颜料的R-NIR值也大于市售颜料的颜料（R-NIR <53.0％）。因此，CA2MN0.77TI0.15ZN0.08O3.92具有潜在的热屏蔽无机黑色颜料。

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    《RSC Advances》 |2019年第66期|共6页
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  • 正文语种 eng
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