Abstract
A titanate coupling agent, TM-27, was used in surface modification of light-storing pigment to improve its compatibility and stability with the organic system. The surface characteristics of light-storing pigments were reflected by Fourier transform infrared spectroscopy (FT-IR) and scanning electron micrograph (SEM). The result showed that the titanate coupling agent molecular formed a thin layer and binded strongly on the surface of pigments. The modification effect was evaluated on the basis of turbidity and by plotting the afterglow decay curve. The application of light-storing pigment in the printing ink system was also examined. When the dosage of titanate coupling agent was 1.5%, the viscosity of printing ink reached the lowest point. The subsidence rate was reduced from 0.8202 ml/h to 0.5821 ml/h. These results indicated that the modified light-storing pigment had better compatibility and stability with the organic system, and the surface modification did not affect the luminescence properties.
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