Sulfonated waterborne polyurethane( SWPU) was synthesized with sulfonic acid polyester glycol( BY3301),tetramethylenexylene diisocyanate( TMXDI) and sulfonic acid salt( A95). And sulfonated waterborne polyurethane/silver nanoparticle( SWPU/AgNPs) composites were prepared by incorporating silver nitrate into SWPU by in situ chemical reduction. The thermal properties,adhesion and mechanical properties of sulfonated waterborne polyurethane/Ag nanoparticle composites films were tested. And the particle size dis...