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Expandable polystyrene resin bead with high color strength and high light fastness and preparation process thereof

The invention discloses an expandable polystyrene resin bead with high color strength and high light fastness and a preparation process thereof. The expandable polystyrene resin bead with high color strength and high light fastness is characterized in that resin beads prepared by the preparation process are uniform in particle size and have bright and controllable color, high color strength and high light fastness, and foamed products made of the resin beads are uniform in color and cell density and have structures with closed cells which are high in strength. The preparation process includes steps of preparing color paste with pigment particle size about 1 micrometer by dispersing and grinding techniques, then obtaining monomers containing precisely dispersed organic pigment with high color strength by phase transformation of the color paste, and finally initiating the colored monomers to complete polymerization. The expandable polystyrene resin bead with high color strength and high light fastness and the preparation process thereof have the advantages that the pigment prepared by the preparation process is fine and uniform in particle size and easy to develop, can disperse among the monomers precisely, and can be compatible with foaming agents and polymers well; and further, products with a small quantity of the pigment have satisfied brilliance and color strength, a polymerized system is stable and controllable without obvious inhibition, and reactions can be completed within a normal time.
Owner:DALIAN UNIV OF TECH
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