Silicon based non-aqueous medium dyeing method suitable for cheese

Abstract

The invention discloses a silicon based non-aqueous medium dyeing method suitable for cheese, and belongs to the technical field of textile dyeing and finishing. The dyeing method comprises the following steps: (1) preparing a dye solution; (2) dyeing cheese: soaking cheese in a silicon based non-aqueous medium, and adding the dye solution to carry out dyeing in a cheese dyeing facility; and (3) after dyeing, carrying out dehydration, soap washing, water washing, and drying to obtain a finished product. The method has the advantages that only a little amount of water and alkali is needed, other dyeing aids are not needed; the water for dyeing and dyeing wastewater are largely reduced, and dye uptake and fixation rate of cheese dyeing are improved effectively. After dyeing, the silicon based non-aqueous medium can be separated from water and is capable of being used repeatedly. The ecological dyeing of cheese is realized. The shortages of conventional water bath cheese dyeing such as much wastewater, difficulty in wastewater treatment, low dye uptake and fixation rate, and the like, are overcome.

Description

technical field [0001] The invention relates to a new type of dyeing method for cheese, especially the dyeing in silicon-based non-aqueous medium, without using inorganic salts and other dyeing auxiliaries, greatly reducing sewage discharge and treatment difficulty, and effectively improving the dyeing efficiency of cheese. The invention relates to dye uptake rate and color fixation rate, belonging to the technical field of textile ecological dyeing and finishing. Background technique [0002] Package dyeing, like other industries with high energy consumption and high pollution, regards energy saving and emission reduction as the main goal of future development. The traditional cheese dyeing adopts the intermittent dyeing method, and the pre-treatment, dyeing and post-treatment processes are completed in the cheese dyeing machine. The whole dyeing process consumes a lot of water and energy. Cheese dyeing can reduce dyeing wastewater by adjusting the dyeing bath ratio, but ...

AI Technical Summary

Problems solved by technology

The two-way circulation of the dye liquor requires that all the cheeses in the master vat must be submerged in the dye liquor, and the liquor ratio must be at least 1:8 to meet the requirements of the two-way circulation of the dye liquor, otherwise, the top layer of the cheese in the main vat will be exposed to the liquid. face, which makes it difficult to reduce water consumption

Continued improvement requires higher equipment and increases production costs

[0003] The dyeing of cellulose fiber cheese is mainly based on reactive dyes. The molecular structure of reactive dyes is simple, and the directness to cellulose fibers is low. Therefore, a large amount of electrolyte must be added to promote the dyeing of dyes; The color fixation rate is low, resulting in a large amount of salt and hydrolyzed dyes in the dyeing wastewater, which will cause serious pollution to the environment if discharged directly

[0004] In a word, the existing cellulose fiber packages have poor dyeing levelness, high dependence on equipment, low dyeing rate and color fixation rate, etc. After years of research, the above problems have not been fundamentally solved. Exploring the dyeing method with little / no water is an important breakthrough