SOLT is a patented pigment package that reduces solar heat intrusion into polymer, textile & coated surfaces by an average of 35% across all colors.
The SOLT pigment package can be used in a wide range of applications and in many different delivery chemistries.
SOLT keeps solar heat out; improving comfort, reducing energy consumption, extending product durability and helping the planet.
How SOLT Works – Part 1
SOLT marries optimal reflectivity in the visible (VIS) range and high reflectivity in the near infra-red (NIR) range by including the INCA ceramic composite in a patented pigment system for polymers, textiles & ‘paint-on’ coatings.
The high NIR reflectivity (to 93+%) is attained by using the INCA ceramic composite with combinations of commercially available mixed metal oxides, minerals and metals.
Directional-Hemispherical Reflectance
(near normal incidence)
Visible and NIR (solar spectrum)
INCA SOLT and Control have similar reflectance in the visible range; subsequently, their color appearance is very close.
In the NIR, INCA SOLT has a much higher reflectance or lower absorptance for solar irradiation!
How SOLT Works – Part 2
In addition to enhancing NIR reflectivity, the ceramic composite acts as a ‘shock absorber’ for the non-reflected photonic energy that is absorbed by the surface, damping the energy that would normally flow through as heat.
The result of this combined action is a significant reduction in heat felt on the surface and an equally significant reduction in energy passing thru the substrate.
Two Identically prepared samples in MIL PRF 686A Desert Tan color were exposed to direct sunlight. Test conducted at Clarkston, GA by Zhuomin Zhang, PhD, Terry McInerney & Francisco Rincon. Full report available on request.
Conclusions
Measurement results suggests that INCA pigment technology can reduce the surface temperature rise by 35% and the cooling load by 33%, as compared with a reference paint or uncoated sample.
The main reason of achieving such effect is by modification of the NIR reflectance. The solar absorptance is reduced by 25% and the net power absorbed by the surface is reduced by 140 W/m2.
Zhuomin Zhang, PhD
Georgia Institute of Technology
INCA Consultant & Science Advisor
http://zhang-nano.gatech.edu/