Argon bleaching and dyeing technology of acrylic yarn

Abstract

The invention relates to the technical field of argon bleaching and dyeing technology in the textile industry, and in particular relates to an argon bleaching and dyeing technology of the acrylic yarn. The argon bleaching and dyeing technology of the acrylic yarn comprises the following steps: (1) placing the acrylic yarn into water, and then sequentially adding auxiliaries which are respectively 1g of chelating disperse agent per liter of water, 1g of oxalic acid per liter of water, 1g of sodium chlorite per liter of water, 0.5g of sodium nitrate per liter of water, and 1g of sodium thiosulfate per liter of water; and (2) heating the water solution with the auxiliaries at speed of 1 DEG C per minute until reaching 95 DEG C, and maintaining the temperature for 30 minutes. According to the argon bleaching and dyeing technology of the acrylic yarn, the sodium chlorite is used as the main auxiliary for oxygen bleaching and can be used for enhancing the oxidability, therefore, high bleaching effect can be realized, and the whiteness of the yarn can be improved; and the yarn is slowly cooled and washed by hot water after the oxidization, and are washed by hot water again after the oxygen bleaching, so that the problem caused by hardening in cold water can be avoided, and the oxidized acrylic yarn is fluffy, soft, full and not hard, and as a result, the quality of the acrylic yarn is improved.

Description

technical field [0001] The invention relates to the technical field of argon dyeing in the textile industry, in particular to an argon dyeing process for acrylic yarns. Background technique [0002] At present, general dyeing factories in the textile industry generally adopt the oxygen bleaching process for acrylic fabrics, using the conventional oxidant H2O2 oxygen bleaching, but if the process is not implemented properly or handled improperly, it will feel hard and rough, and cannot maintain the original quality of the yarn. Soft, full-bodied feel. This is because the conventional H2O2 oxygen bleaching process needs to add a certain amount of caustic soda to improve the oxidation effect, and also requires a certain high temperature to ensure the effective decomposition of H2O2, so as to achieve the whiteness of oxygen bleaching, but acrylic fabrics are resistant to acids, oxidants and general Organic solvents, but poor alkali resistance. Therefore, the traditional proces...

AI Technical Summary

Problems solved by technology

[0002] At present, general dyeing factories in the textile industry generally adopt the oxygen bleaching process for acrylic fabrics, using the conventional oxidant H2O2 oxygen bleaching, but if the process is not implemented properly or handled improperly, it will feel hard and rough, and cannot maintain the original quality of the yarn. Soft, plump feel

This is because the conventional H2O2 oxygen bleaching process needs to add a certain amount of caustic soda to improve the oxidation effect, and also requires a certain high temperature to ensure the effective decomposition of H2O2, so as to achieve the whiteness of oxygen bleaching, but acrylic fabrics are resistant to acids, oxidants and general Organic solvents, but poor alkali resistance

Therefore, the traditional process can only do simple oxygen bleaching by using a simple method of reducing the amount of additives at low temperature, which cannot achieve sufficient oxygen bleaching of acrylic fabrics, thus affecting product quality.