Dyeing behaviour of cationic modified flax fabric for natural dyes

In order to raise the dyeing behaviour of flax fabric for natural dyes,the flax fabric modified by cationic modifying agent was dyed by natural dyes-cochineal and lemon yellow,the effect of dyeing temperature and dyeing time,as well as percent of salt and pH of dye bath on K/S value was discussed.Orthogonal experimentation for two natural dyes was disigned.The optimum process of cochineal is dyeing temperature 60 ℃,dyeing time 60 min,and pH of dye bath is 4;The optimum process of lemon yellow is dyeing temperature 60 ℃,dyeing time 60 min,and pH of dye bath is 5.