Nano blue tungsten oxide may be applied for producing thermal insulation masterbatch so that it will have good heat insulation and light fastness. The both characteristics are attributed to the photochromic phenomenon of blue tungsten oxide (related to its specific structure), which solves the problem of fading and brittleness of irradiated products as they are exposed to near infrared rays and ultraviolet rays in sunlight.
Effect of H2 Flow and Calcing Time on Morphology of Blue Tungsten Oxide
At certain calcing temperature, the influence of H2 flow and calcing time on the surface morphology and uniformity of blue tungsten oxide particles is very obvious. However, with the decrease of H2 flow and the prolongation of calcing time, blue tungsten oxide particles have a tendency to grow up, and the surface cracks are larger, and the uniformity is slightly reduced. While if the flow of H2 increased, the influence of internal stress was changed due to the penetration of H2 and increased pressure. Therefore, the blue tungsten oxide particles are easily broken so that there is a tendency to become fine.
More details, please visit:
http://www.tungsten-powder.com/Blue-Tungsten-Oxide.html
