Abstract
This paper studies the experimental method that uses the liquid phase method to prepare cobalt blue mica coated titania pearlescent pigment with urea as precipitant. The optimum technology parameters and the chemical composition of resulting pigment are introduced. The coating principle of cobalt blue mica coated titania is analyzed by infrared spectral analysis and tested by scanning electron microscopy (SEM). Then the activation energy of the cobalt blue mica coated titania precursor in the later reaction stage of the dehydrating process is computed using the variations of the sample's specific surface area under different calcining temperatures and time. Furthermore, the model of the reaction kinetics is put forward in the paper.
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