Application of ultrasonic technique in low temperature dyeing of wool

Compared with the conventional dyeing process,low temperature ultrasonic dyeing of wool enjoys advantages of energy saving,consumption reduction,improving product quality.The feasibility of ultrasonic technology used in low-temperature dyeing of wool was investigated,and the effects of ultrasound on color yield and dye uptake were studied when ultrasonic dyeing of wool was performed with reactive or acid dyes at 50 ～ 55 ℃.The experiment revealed that ultrasonic action redoubled the color yield under the above temperature condition.The color yield of reactive dyed wool also exhibited significant enhancement.Above 90% color yield can be obtained when ultrasonic dyeing of wool with reactive dyes for 200 min or with acid dyes for 90 min.So,it can be seen that ultrasound promotes low temperature dyeing of wool and good result of dyeing can be achieved.