Water and oil repellent finishing of polyester cotton by foam technology

Foam technology is applied to the water and oil repellent treatment of polyester /cotton,and one side of the finished fabric gets water and oil repellency without affecting its wettability and breathability. The paper studied the influencing factors in the process of foam technology,and achieved the optimal parameters through orthogonal test as follows: sodium dodecyl sulfate 3 g / L,stabilizer 2 g / L, repellant SMS 60 g / L,speed 7 m / min,foaming ratio 11. 4,and curing conditions 140 ℃ × 5 min. Meanwhile,by comparing the conventional pad-cure-bake method with the new foam technology,it is found that the two methods achieve equal effect,but the mechanical property of the finished fabric using foam technology is better than that of finished fabric by the conventional method.