Method for dyeing wool fabric at low temperature

A low-temperature dyeing and fabric technology, applied in the field of dyeing and finishing, can solve the problem of wool damage and achieve the effect of optimizing pretreatment conditions
CN102154830BInactive Publication Date: 2013-06-26JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2013-06-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for dyeing a wool fabric at low temperature, belonging to the technical field of dyeing and finishing. The method comprises the following steps: immersing a wool fabric in a chitosan quaternary ammonium salt finishing solution for 30min at the temperature of 50 DEG C, wherein the concentration, the bath ratio and the pH of the chitosan quaternary ammonium salt finishing solution are respectively 10g / L, 1:20 and 3; and carrying out secondary immersing and secondary squeezing, washing, drying and then dyeing. The wool fabric finished by the chitosan quaternary ammonium salt finishing solution is dyed by a strong acid dye, a weak acid dye and a neutral dye at low temperature. In the method disclosed by the invention, the temperature of the strong acidic dye can be reduced to 60 DEG C, the temperature of the weak acid dye and the temperature of the neutral dye can be reduced to 80 DEG C, dyeing lasts for 45min, the dyeing rate is over 80%, the dyeing effect of non-finishing wool dyeing at 98 DEG C can be achieved, and the brightness, the strength and the color fastness maintenance degree of the dyed wool fabric can be maintained or improved.
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Description

technical field

[0001] The invention relates to a low-temperature dyeing method for wool fabrics, belonging to the technical field of dyeing and finishing. Background technique

[0002] Wool textiles are famous for their luxury, elegance, and comfortable natural style, especially cashmere, which has the reputation of "soft gold". At present, acid mordant dyes are commonly used in wool dyeing. This kind of dye has good color fastness, but because it contains red alum, it will bring adverse health effects to the environment and human body. In contrast, ordinary acid dyes are cheap, and the dyed fabrics are bright in color. However, in the process of wool dyeing, because there is a hydrophobic dense scale layer on the surface of the wool fiber, which hinders the adsorption of the dye to the wool fiber and the diffusion into the interior, the wool dyeing generally needs to be carried out at a high temperature close to boiling, which can improve the dyeing properties. Diffusion...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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