Preparation of multi-purpose TiO2 pigment with improved properties for coating applications
2021
George, John | Gopalakrishnan, C.C. | Manikuttan, P.K. | Mukesh, K. | Sreenish, S.
A rutile-grade multipurpose TiO₂ pigment with surface coatings of zirconia and alumina is prepared under controlled conditions. HRTEM, FTIR, ξ-Potential etc. were used to characterize the morphology, structure and electrokinetics. A continuous and compact film of zirconia was anchored on the base TiO₂ particles surface as the innermost coating. A composite coating of alumina was precipitated under controlled conditions which facilitated the precipitation of both dense, compact and porous, boehmite alumina on the surface of zirconia-coated TiO₂ particle surface. Comparative evaluation of the pigmentary properties of the coated pigment revealed superiority in durability and optical properties of the modified pigment over conventional enamel-grade and general-purpose grade TiO₂ pigments respectively.
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Эту запись предоставил National Agricultural Library