The invention provides a method for controlling
dyeing homochromatism of different
cellulose fiber products, which comprises the following steps:
liquid nitrogen treatment: immersing a sample into
liquid nitrogen, carrying out rapid freezing treatment for 1-5 minutes, taking out the sample, and naturally returning the temperature at
room temperature; mercerizing treatment: fixing a sample on a mercerizing frame, immersing the sample into mercerizing finishing liquid according to a bath ratio of 1: (20-40), immersing at
room temperature for 30-60 minutes, taking out the sample, placing the sample under a vacuum condition, keeping for 10-15 minutes, ventilating and pressurizing to normal pressure, standing for 5-10 minutes, washing with water for 10-20 minutes,
drying, loosening the mercerizing frame, and taking down the sample;
liquid ammonia treatment: immersing the mercerized sample into
liquid ammonia, treating for 15-20 minutes, taking out, and naturally warming at
room temperature; and
dyeing: carrying out double-stage heating
dyeing. The process is a comprehensive process of
liquid nitrogen treatment, mercerizing treatment,
liquid ammonia treatment and dyeing treatment, the dyeing uniformity and color fastness of the
textile can be remarkably improved, and meanwhile the hand feeling and glossiness of the
textile are improved.