Silk fiber cheese and dyeing method thereof

Abstract

The invention relates to the technical field of dyeing and finishing, in particular to a silk fiber cheese and a dyeing method thereof. The silk fiber cheese is dyed by a first dye, the soaping fastness of the dyeing of the silk fiber cheese under the national standard GB/T 3921-2008 is grade 4-5, the dry rubbing fastness under the national standard GB/T 3920-2008 is grade 4-5, the wet rubbing fastness is grade 3-4, and the color depth under the national standard GB/T 4841.7-2006 can reach 2/1 standard depth.

Description

A kind of silk fiber cheese yarn and dyeing method thereof technical field The present invention relates to dyeing and finishing technical field, particularly relate to a kind of silk fiber cheese and dyeing method thereof. Background technique [0002] At present, the main dyeing method of silk fiber cheese dyeing with reactive dyes is the dyeing tank water bath dyeing method. the dye The dyeing water bath ratio of the method is large, the dyeing rate and the fixing rate are low, and a large part of the dyes cannot be fixed on the silk fibers, so it is necessary to Washing with a lot of water can remove the floating color on the surface of the fiber to meet the requirements of fastness. This dyeing method wastes water resources, and polluted water environment. In addition, when current dyeing vat water bath dyeing method uses reactive dyestuff to dye silk fiber cheese, need A large amount of salt is added to promote dyeing, and a large amount of alkali is used to ...

AI Technical Summary

Problems solved by technology

Specifically, since most of the water is adsorbed on the silk fiber cheese, the chances of the dyes coming into contact with the silk fiber cheese increase, the dyeing is too fast, and uneven dyeing is easy to occur

Moreover, the feeding method of this scheme will cause the local pH in the dyeing bath to rise sharply, causing the hydrolysis of the dye to intensify under the condition of high pH value, and at the same time, it will also make the reaction speed of the local dye and the fiber too fast, thus resulting in poor dyeing. Uniform phenomenon, in non-aqueous medium dyeing, less water consumption, this phenomenon will be more obvious

[0005] CN111455699A discloses a micro-water dyeing method suitable for wool. The feeding method is to mix the dye liquor and the non-aqueous medium before adding the dyed object. The volume of the mixed dye liquor and the non-aqueous medium needs to be mixed in the dye vat and the mixing time is uniform. Long, it will eventually prolong the dyeing time and reduce production efficiency

Moreover, in this method, the lye is directly added to the dye solution. When the chemical material is produced in large quantities in the factory, because the dye solution is placed for a long time, the added alkali agent will have a greater impact on the hydrolysis of the dye, resulting in reactive dyes. The color fixation rate is reduced

In addition, in this method, the feeding method of mixed dye solution and non-aqueous medium will prolong the dyeing time