Abstract
Polymer spheres with tunable particle size were synthesized by hydrothermal method derived from sucrose. Afterwards, zircon was coated on their surface to form the zircon encapsulated carbon (C@ZrSiO4) black pigment after calcination. The corresponding relationship between the particle size of polymer spheres and the chromaticity of C@ZrSiO4 pigments was investigated. The results revealed that the chromatic performance of C@ZrSiO4 pigment can be significantly improved by decreasing the colorant size and the relationship between them was approximately linear. The pigment exhibits deep black hue, as L∗ = 41.04, a∗ = 1.01, b∗ = 3.22, with the colorant size of 123 nm. Moreover, it also presents excellent thermal and chemical stability, indicating its potential candidate for ceramic decoration.
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