Abstract:The room temperature self-crosslinking emulsions of waterborne fluorinated polyurethane- acrylate(WFPUA)were synthesized using in-situ surfactant-free emulsion爌olymerization爓ith acrylic monomers as the solvent, and the diacetone acrylamide(DAAM) and adipic dihydrazide(ADH) were introduced into the WFPUA emulsions for the cross-linking system. The structure and the physical properties of the WFPUA were investigated by FT-IR, TEM and AFM. Meanwhile, the fluorine content and the impact of the ratio of DAAM and ADH were studied. The results show that,when the fluorine content reached 8%,DAAM:ADH=1:1, the static water angle would reach 110.5?water absorption also are reduced to 8.8%. tensile stress are increased from 18.12MPa to 28.55MPa. Moreover, the results of TG spectra show that the cross-linking system of DAAM and ADH help to improve the thermal stability of the latex film.