Using the properties of rare earth metals to absorb and store light energy and release it again,the coating agent which was prepared by mixing rare earth strontium aluminate luminescent powder with waterborne polyurethane was used to coat cotton fabrics.The research showed that the viscosity and breaking strength after film formation of the mixture of rare earth strontium aluminate luminescent powder and waterborne polyurethane both showed a decreasing trend with the mass fraction of rare earth strontium aluminate luminescent powder increasing.When the mass fraction of rare earth strontium aluminate luminescent powder exceeded 20％,the viscosity and breaking strength of mixed film decreasing rate further was increased,and exceeding 30％,the agglomeration phenomenon in coated fabric surface was obvious.The wear properties of the coated fabric could be taken into account within 25％.The fluorescence spectrum of the coated fabric was at 490 nm,and the peak position was migrated to the left with the mass fraction of rare earth strontium aluminate luminous powder increasing.The brightness of the coated fabrics could be increased and the decay of the afterglow could be improved by increasing the mass fraction of rare earth strontium aluminate luminescent powder,while the afterglow properties of the coated fabric would be limited by dyeing.Analysis was showed that reasonable control of the mass fraction of rare earth strontium aluminate luminescent powder was beneficial to the development and application of rare earth metal-based coated fabrics.
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