Nano-particle enhanced infrared absorbing glazes can offer protection from the negative health and heat effects of UV-light while improving visbility with lighter tints that are more protective. Lanthanum hexaboride is one such material that has found its way into the automotive industry as it can easily be inegrated into existing glazing processes, and offers improved UV-heat proection versus traditional glazes. The lanthanum hexaboride is applied as an interlayer beneath Polyvinyl Butyral (PVB) glazes during the manufacturing process, and enhances the performance of other glazes and tints added on top. the layer is incorporated to improve heat control while still maintaining high visibility in glass that has multiple polymer coatings.
Potentially, this material can allow dynamic tint control in response to UV light sources. The conductive nature of the lanthanum hexaboride nanoparticles could allow for control systems that use electric current to tune the glass to adapt to current conditions, allowing in more or less light and heat via electric contorl systems. This dynamic reaction could have safety benefits in automotive applications or lower cooling costs for modern glass buildings.
This technology offers potentially more UV protection than conventional PVB tinted glass while still maintaining high visibility. This will result in the more efficient operation of buildings and glass structures and more applications for structural glass in automobiles and other transportation vehicles.
The risks associated with this product are dependent on the application method, but would generally be considered low since the particles are sandwiched between glass and PVB films. There are no free aspect nanoparticles associated with the finish product, and one would assume the appropriate materials controls were taken to mitigate the risks in the manufacturing and fabrication process. Specific risks to human health and ecology would be associated with the deposition and handling of the lanthanum hexaboride nanoparticles.