The reason why new architectural coatings are produced with an appropriate amount of cesium tungsten bronze nanoparticles as an important modifier is that the particles can not only effectively improve the corrosion resistance and high temperature resistance of the product, but also enhance the heat preservation and heat insulation effect of the coating.
Cesium tungsten bronze, also known as cesium tungsten oxide, is a compound of transition metal tungsten, molecular formula Cs0.33WO3, molecular structure of oxygen octahedron structure, purity higher than 99.9%, bulk density 1.5g/ml, relatively uniform large particle size, the primary particle size is about 30nm, the specific surface area is about 50m2/g, and it is not easy to agglomerate, non-toxic, and non-radioactive.
Cs0.33WO3 nano-powder has excellent mechanical, thermal, optical and electrical properties due to its special crystal structure. It has been considered as an ideal additive for architectural coatings. Studies have shown that cesium tungsten oxide powder has a strong ability to selectively transmit light (70% visible light transmittance), good near-infrared shielding performance (up to 95% in the near-infrared region), and high transparency.
Cesium tungsten bronze powder can not only be used in coatings, but also in dimming glass, films, textile fibers, tumor diagnosis and treatment.
Compared with marketed glass, glass containing Cs0.33WO3 powder has higher clarity and heat resistance, so it can save energy when used in automobiles and buildings. Films containing Cs0.33WO3 powder which has the longevity, heat insulation and heat preservation effect are better than common products. The reason why the textile fiber containing Cs0.33WO3 particles has excellent heat preservation ding is because the particles have strong absorption capacity of near infrared rays (wavelength 800-1200nm). In tumor diagnosis and treatment it also uses the thermal properties of Cs0.33WO3 particles to achieve the dual anti-tumor effect of photothermal-photodynamic and achieve visual monitoring during tumor treatment.
