Phosphorescent sand

Phosphorescent sand luminous masterbatch masterbatch far less .

For ordinary plastic , the traditional method of coloring plastics are dry ( floating dye ) coloring , coloring coloring paste , liquid colorants colored masterbatch coloring. These methods have many disadvantages, such as pigment dispersion is poor, flying large , polluting the environment and endanger the health of workers , pigment measurement difficult to control, poor coloring , high cost [ 2 ] . Particularly small amount of pigment products , the poor dispersibility of the pigment , resulting in the generation of color . The article of the high pigment concentration , the difference in affinity for the pigment with a resin , poor processing performance products , the mechanical properties decrease .

glow in the dark pigments