Ultrasonic-assisted supercritical CO2 (carbon dioxide) wool fiber dyeing process

Abstract

The invention discloses an ultrasonic-assisted supercritical CO2 (carbon dioxide) wool fiber dyeing process. The ultrasonic-assisted supercritical CO2 wool fiber dyeing process includes the steps of firstly, pretreating, namely performing sorting, scouring and grading of animal wool; secondly, performing ultrasonic treatment of the pretreated animal wool in an ultrasonic cell disruptor; and thirdly, performing supercritical CO2 dyeing to the treated animal wool. The ultrasonic-assisted supercritical CO2 wool fiber dyeing process abandoning the traditional dyeing process has simple steps, short dyeing time and low damage of wool fiber.

Description

technical field [0001] The invention relates to a dyeing process, in particular to a wool fiber dyeing process. Background technique [0002] Hair fibers are fibers obtained from animals and are multicellular structures composed of keratin. The main varieties are: sheep wool, cashmere, mohair, Angora goat hair, rabbit hair, camel hair, yak hair. Wool fiber has the excellent characteristics of lightness, softness and warmth, and can be used as raw materials for high-grade worsted clothing and woolen high-grade coats and blankets. [0003] Because wool fiber contains a large amount of carbohydrates, the dyeing process is very demanding. It is easy to denature in strong acid or alkali environment or if the dyeing time is too long, which will damage its unique warmth retention and other functions. According to relevant data, after the general dyeing environment and dyeing process, 80% of the protein in goat hair is basically denatured, which cannot meet the export standard. ...

AI Technical Summary

Problems solved by technology

[0003] Because wool fiber contains a large amount of carbohydrates, the dyeing process is very demanding. It is easy to denature under strong acid or strong alkali environment or if the dyeing time is too long, which will damage its unique functions of keeping warm.

According to relevant data, after the general dyeing environment and dyeing process, 80% of the protein in goat hair is basically denatured, which cannot meet the export standard.