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In this paper , the main job is to low-temperature synthesis and spectral properties of chrome-tin red material used in the experiment chemical co-precipitation method , sol-gel synthesis chrome-tin red material, and were compared with the solid-phase synthesis method . Chrome-tin red material mineral composition of the coloring in the solid-phase method , mainly to determine a more appropriate formula . Pre- synthesized tin sphene pigment preparation effect is better than a one - time synthetic pigment conclusions , find a theoretical basis for the chemical co-precipitation precursor synthesis . Chemical co-precipitation method , the chrome-tin red material synthesis temperature significantly lower than the solid-phase method . In this work, SnCl2 · 2H2O, K2Cr2O7, Na2SiO3, CaCO3 as raw material, the pigment precursor chemical calculations and theoretical design . Experimental results show that the experimental results and the theoretical calculation results, and the product can be obtained at a lower temperature chrome tin pink ( 100 ° C ) below the solid-phase method to solve the low-temperature synthesis of high-grade chrome-tin red material problem . In the sol -gel method , the synthesis temperature of the tin red chrome material , obtained significantly lower than the solid- phase method ( 150 ° C ) lower , is also lower than the chemical coprecipitation method . In this work, tetraethyl orthosilicate ( TEOS ) , ethanol (EtOH), SnCl2 · 2H2O, CaCO3, CrCl3 · 6H2O as the raw material , the TEOS hydrolysis conditions were explored , and TEOS hydrolysis viscosity, spectral properties of the test hydrolysis process were characterized . With the TG - DTA , XRD and other means of testing , three synthetic methods were compared , a preliminary analysis of chrome-tin red material low-temperature synthesis mechanism and reaction ; tested chrome-tin red reflectance spectra of the material , combined with chromophores tin sphene the structural characteristics of the crystal field theory explained chrome-tin red coloring mechanism of the material .
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