Abstract: Different kinds of phosphorus flame retardants and water repellent agents were used in onebath finishing of polyester fabric through dip-pad process. The flame resistance, water repellency and other mechanical properties of the finished fabrics were tested by orthogonal experiment to optimize the process conditions. The optimal formulation and conditions were determined as follows: flame retardant agent RUCO-FLAM VOD 300 g/L, water repellent agent SY-09 50 g/L; drying at 110 ℃ for 180 s, curing at 170℃ for 120 s. The after-flame time of finished fabric was less than 4 s, the char length was less than 8 cm, consistent with the requirement of GB/T 5455 — 1997 B1 class standard and the level of water repellency could reach grade 3.

Key words: polyester fabric; flame retardant finishing; water repellent finishing; one-bath processing