Application Of Ultrasonic Technology In Coating Dyeing And Antibacterial Finishing Of Cotton Fabrics

In recent years,the development of new dyeing and finishing technology has been widely concerned by people in the industry.The application of new dyeing and finishing technology can effectively improve the current situation of high energy consumption and high pollution in the textile industry,improve the quality of textiles and break the stereotype of the traditional textile industry in people’s mind.Therefore,it is of great significance to develop new technologies for traditional dyeing and finishing processes.Ultrasonic technology has long been found and widely used in various fields.With its excellent characteristics,ultrasonic technology has also been introduced to the textile industry and participated in the improvement and development of some processes.Therefore,this subject takes cotton fabric as the dyeing and finishing object,combines ultrasonic technology with coating dyeing process and zinc oxide antibacterial finishing process,and is committed to improving coating dyeing and antibacterial finishing process through the introduction of new technology,so as to achieve the purpose of energy conservation and emission reduction.The first part explores the influence of ultrasound on the dispersion stability of pigment and zinc oxide in the system.The results show that for the stably dispersed ultrafine particle dispersion system,the surfactant on the particle surface will fall off under the action of ultrasound for a long time.The macroscopic manifestation is the increase of particle size of the system particle aggregate,but for the short-time dyeing and finishing process,the effect of ultrasound has little effect on it.The second part designs experiments to explore the influence of different parameters of ultrasonic environment on the effect of pigment particles finishing on cotton fabric.Then,under the optimal ultrasonic conditions,the ultrasonic assisted cotton fabric coating dyeing experiment is carried out with the binder concentration as the variable,and the optimal ultrasonic assisted cotton fabric coating dyeing process parameters are obtained according to the dyeing results of each sample.The experimental results show that the short-time,high-frequency and low-power ultrasonic action can effectively improve the adhesion of pigment particles on the fabric and improve the color gain depth and color fastness to friction of paint dyed fabrics.Then,the dosage of paint dyeing adhesives with different color depths under ultrasonic conditions is determined: 60 g / L for light color process,90 g / L for medium color process and 120 g / L for dark color process.Compared with the actual production process of the enterprise,The amount of adhesive is greatly reduced and the hand feel of the fabric is improved.In the third part,taking the adhesive concentration as the variable,the experiment of ultrasonic assisted antibacterial finishing of cotton fabric was carried out to explore the effect of ultrasonic on the effect of zinc oxide finishing on cotton fabric.The experimental results show that the application of short-time,high-frequency and low-power ultrasonic in the antibacterial finishing process can effectively improve the load of zinc oxide antibacterial particles on the fabric,and the durability of the fabric with high content of antibacterial finishing agent can be guaranteed when less adhesive is used.Under the ultrasonic assisted condition,the amount of adhesive in the new process decreased by 40% compared with the factory process,and the handle of the finished fabric was improved.