Application of Multi Flux Model to Predict Optical Performance of Titanium Dioxide Nanopigments

Document Type : Research Paper


1 Department of R&D, Alyaf Abrisham Mahan Delijan Company, Delijan, Iran.

2 Faculty of Textile Engineering, Guilan University, Rasht, Iran.


   The area of nano-pigments is a limitless field with exceptional potential applications in industry, and their application is becoming the focus of many research groups worldwide in recent years due to their outstanding and tunable properties. Titanium dioxide (TiO2) nanoparticles, on the other hand, are among the most widely used pigment particles, and the interest for utilization of these nanoparticles as spectrally selective pigment is continually growing. Accordingly, this contribution utilizes Mie scattering theory and Multi Flux model to study the effect of particle size and concentration on radiative properties and optical performance of TiO2 pigmented coatings in solar spectrum with special emphasis on UV and NIR regions. Optical behaviors of TiO2 pigments were subsequently evaluated based on AATCC test method 183-2004 for UV-A and UVB regions and standard test method ASTM G 107-03 and ASTM G173-03 for NIR region. At the final step, some experiments have been carried out to evaluate the performance of proposed method.


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