A Low-temperature Dyeing Method for Improving the Strength of Wool Textiles

Abstract

The invention relates to a low-temperature dyeing method capable of improving strength of a wool textile and belongs to the field of textile printing, dyeing and finishing. According to the low-temperature dyeing method, a dyeing liquid and a dyeing technology route are changed, and the wool textile with a pre-treating liquid is dyed at low temperature in the dying liquid which is formed by mixing high-proportion ethanol, a small amount of water and dyes. The method is capable of reducing the strength loss of wool and enhancing the utilization rate and the dye-uptake rate of the dye, thus the wool textile has a good level-dyeing property, and both luster and wearability can be improved; in addition, the use amount of water in the dyeing technology of the wool textile can be reduced, and the use amounts of auxiliaries are effectively reduced. The method is simple in technology and low in cost; besides, since ethanol can be recycled, the method is safe, energy-saving, economical and environment-friendly.

Description

technical field [0001] The invention relates to a low-temperature dyeing method for improving the strength of wool textiles, belonging to the field of textile printing and dyeing processing. Background technique [0002] In traditional wool dyeing, in order to obtain better level dyeing and make the dye penetrate into the fiber, generally the wool fiber is continuously dyed for a long time when the dye solution is boiling or near boiling. Due to the limitations of dyes and equipment, the pH range of wool dyeing is generally 2 to 7. Dyeing under such traditional long-term high-temperature boiling conditions will cause various forms of loss of wool, especially the strength of wool fibers. The loss not only reduces the production efficiency and output, but also affects the feel and vividness of the dyed product, and finally even affects the quality and performance of the product. [0003] Therefore, with the advancement of science and technology and the needs of wool products,...

AI Technical Summary

Problems solved by technology

However, its disadvantage is that this method needs to treat the wool with protease, the process is complicated and the cost is high

However, its disadvantages are that the cost of this method is high and the process is complicated

Although this method uses ionic liquids to modify and then dye wool, it does reduce the loss of wool, but its disadvantage is that the cost of this method is relatively high

Although the method of adding oxidizing and reducing agents in the dyeing process does achieve low-temperature dyeing of wool, its disadvantage is that this method does not reduce the damage to the strength of wool to a certain extent.