The Experts below are selected from a list of 69 Experts worldwide ranked by ideXlab platform
Jaroslav Stejskal - One of the best experts on this subject based on the ideXlab platform.
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effect of surface treatment of Pigment Particles with polypyrrole and polyaniline phosphate on their corrosion inhibiting properties in organic coatings
Progress in Organic Coatings, 2014Co-Authors: Andrea Kalendova, David Veselý, Miroslav Kohl, Jaroslav StejskalAbstract:The effect of Pigment Particle surface treatment with conductive polymers on the corrosion inhibiting properties of organic paints was investigated. Mixed oxides possessing the spinel and perovskite structures were synthesised for the study. Natural graphite and Pigments based on ferric oxide and silicate were studied. Coating materials based on a water-based epoxy resin were prepared for the investigation of the corrosion protection properties of the Pigments, the surfaces of which had been provided with a conductive polymer layer. Laboratory corrosion tests were applied to the paint films. A commercial corrosion protection Pigment, based on modified zinc phosphate, served as the corrosion protection efficiency standard. Polyaniline phosphate was found preferable to polypyrrole as the modifying agent of the Pigment surface regarding the Pigment's corrosion inhibiting efficiency. Surface treatment with the conductive polymers is also beneficial to the mechanical properties of the paint.
Xiong Wu - One of the best experts on this subject based on the ideXlab platform.
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the effects of Particle size distribution on the optical properties of titanium dioxide rutile Pigments and their applications in cool non white coatings
Solar Energy Materials and Solar Cells, 2014Co-Authors: Jianrong Song, Jian Qu, Zhongnan Song, Weidong Zhang, Tao Zhang, Wenzhan Ji, Rongpu Zhang, Hongqiang Zhang, Ziying Zhang, Xiong WuAbstract:Abstract The Particle size distributions of three commercially available titanium dioxide Pigments were measured, and their effects on the optical properties of the Pigments were investigated. The Altiris 550 and 800 Pigments possess larger median Particle size and wider size distributions than those of the conventional titanium dioxide rutile. 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 colors.
Fernando Curiel - One of the best experts on this subject based on the ideXlab platform.
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scattering properties of rutile Pigments located eccentrically within microvoids
Journal of Quantitative Spectroscopy & Radiative Transfer, 2001Co-Authors: Jean-claude Auger, Brian Stout, Rubén G. Barrera, Fernando CurielAbstract:Abstract We study the optical properties of opaque polymer Pigmented coatings. The system consists of spherical rutile Particles encapsulated in spherical microvoids embedded in a transparent polymer resin. The single-scattering properties of this system have been analyzed already, in case the rutile Particle is located at the center of the microvoid . Here, we use a T-matrix approach to generalize and extend this analysis to the more realistic case when the rutile Particles is located off-center within the microvoid. We also consider the multiple-scattering effects of a cluster composed by a collection of air bubbles with off-center rutile inclusions. Our calculations take into account the multiple scattering and the dependent-scattering processes of each Pigment Particle of the aggregate, using a new recursive T-matrix algorithm.
Yan Zhang - One of the best experts on this subject based on the ideXlab platform.
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coating organic Pigment Particles with hydrous alumina through direct precipitation
Dyes and Pigments, 2012Co-Authors: Haixia Wu, Yan ZhangAbstract:Abstract A novel coating process of hydrous alumina on organic Pigment Particles through direct precipitation in aqueous solution was developed in this work. The aqueous suspensions of organic Pigment Particles were prepared using cetyltrimethylammonium bromide (CTAB) and sodium dodecylbenzene sulfonate (SDBS) as additives before the coating. The organic Pigment Particles were then coated with hydrous alumina using Al 2 (SO 4 ) 3 as precursor. The morphology and surface states of as-coated organic Pigment Particles were analyzed by high-resolution transmission electron microscopy (HRTEM) and zeta-potential. TEM images showed that a uniform hydrous alumina film could be formed on the organic Pigment Particle surface with anion surfactant SDBS. However, with cation surfactant CTAB, no alumina coating film was generated on the organic Pigment Particle surface.
Andrea Kalendova - One of the best experts on this subject based on the ideXlab platform.
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effect of surface treatment of Pigment Particles with polypyrrole and polyaniline phosphate on their corrosion inhibiting properties in organic coatings
Progress in Organic Coatings, 2014Co-Authors: Andrea Kalendova, David Veselý, Miroslav Kohl, Jaroslav StejskalAbstract:The effect of Pigment Particle surface treatment with conductive polymers on the corrosion inhibiting properties of organic paints was investigated. Mixed oxides possessing the spinel and perovskite structures were synthesised for the study. Natural graphite and Pigments based on ferric oxide and silicate were studied. Coating materials based on a water-based epoxy resin were prepared for the investigation of the corrosion protection properties of the Pigments, the surfaces of which had been provided with a conductive polymer layer. Laboratory corrosion tests were applied to the paint films. A commercial corrosion protection Pigment, based on modified zinc phosphate, served as the corrosion protection efficiency standard. Polyaniline phosphate was found preferable to polypyrrole as the modifying agent of the Pigment surface regarding the Pigment's corrosion inhibiting efficiency. Surface treatment with the conductive polymers is also beneficial to the mechanical properties of the paint.