Please wait.'

Page is loading'


Home  > Raw materials & technologies  > Raw materials  > Coatings pigments  > Particle size distribution effects optical...

Friday, 20 September 2019
pdf
Raw materials & technologies, Raw materials, Coatings pigments

Particle size distribution effects optical properties of titanium dioxide pigments

Tuesday, 29 July 2014

The particle size distributions of three commercially available TiO2 pigments were measured by Chinese researchers.

Compared with the titaniumdioxide rutil pigments, improve altiris pigments solarreflexion

Source: Kronos

Compared with the titaniumdioxide rutil pigments, improve altiris pigments solarreflexion

Source: Kronos

Furthermore, they investigated their effects on the optical properties of the pigments. The "Altiris 550” and "800” pigments possess larger median particle size and wider size distributions than those of the conventional titanium dioxide rutile.

Pigments improve solar reflectance of coloured coatings

The visible (VIS) reflectance, the solar reflectance and the lightness of the films and coatings singly pigmented with any of these three pigments decrease as the pigment particle size increases. The VIS transmittance and near-infrared (NIR) reflectance both increase as the pigment particle size increases. The main reflection band of the coatings shifts farther into the NIR region with increasing pigment particle size. The partially VIS-transmitting Altiris pigments enable the NIR and the solar reflectance of cool non-white coatings to be improved, thereby yielding metameric matches to the desired colours.

The study is published in: Solar Energy Materials and Solar Cells, Volume 130, November 2014, Pages 42-50.

top of page
Comments (0)
Add Comment

Post comment

You are not logged in

register