Dyeing process of dual-type cashmere fiber

A cashmere and fiber technology, applied in the field of dyeing process, can solve the problems of light coloring, low dye uptake rate, and large color difference in root tip dyeing of "two-fine wool", so as to reduce costs, improve product quality, and high dye uptake rate Effect

Active Publication Date: 2013-09-04
宁夏新澳羊绒有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the defects of the existing cashmere fiber dyeing technology, aiming at the difficulty in dyeing the two types of cashmere fibers, low dyeing rate, large dyeing color difference at the root tip and relatively shallow coloring of "two-fine hair", by adding cashmere The

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1: A dyeing process for two-type cashmere fibers, mainly related to a two-type fiber black dyeing process, which is characterized by including the following steps:

[0023] Step 1: Preparation of protein dialysate:

[0024] Soak the prepared coarse wool or lint in a hydrochloric acid solution at 25°C and pH=2 for 2 hours, wash it with deionized water, dry it in a drying device at 50°C, cut it into pieces, and dissolve it by the reduction C method , The concentration of urea in the dissolving solution is 8mol / L, the amount of SDS added is 3%, the concentration of 2-mercaptoethanol is 7%, the temperature is 55°C, and the time is 12 hours. Then the crude protein solution after dissolution is filtered, and The keratin macromolecules with molecular weights of 8000~10000 are dialyzed by membrane dialysis method, and the keratin solution is obtained after concentration. Then the pH value is adjusted to near the isoelectric point of keratin 4-5 with glacial acetic acid to ma...

Example Embodiment

[0036] Example 2: A dyeing process for two-type cashmere fibers, mainly involving the pink dyeing of two-type fibers, which is characterized by including the following steps:

[0037] Step 1: Preparation of protein dialysate:

[0038] Soak the prepared coarse wool or lint in a hydrochloric acid solution at 25°C and pH=2 for 2 hours, wash it with deionized water, dry it in a drying device at 50°C, cut it into pieces, and dissolve it by the reduction C method , The concentration of urea in the dissolving solution is 6mol / L, the amount of SDS added is 1%, the concentration of 2-mercaptoethanol is 5%, the temperature is 45℃, and the time is 8 hours, and then the crude protein solution after dissolution is filtered, and The keratin macromolecules with molecular weights of 8000~10000 are dialyzed by membrane dialysis method, and the keratin solution is obtained after concentration. Then the pH value is adjusted to near the isoelectric point of keratin 4-5 with glacial acetic acid to make...

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PUM

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Abstract

The invention relates to the dyeing field of cashmere textile industry, in particular relates to the field of the dyeing technology for the dual-type fibers and the 'two fuzzes' of cashmere fibers and provides a dyeing process of dual-type cashmere fibers. The method has the biggest characteristic that the disulfide bonds on the surfaces of the dual-type cashmere fibers are opened by utilizing the pre-treatment technology; the dual-type cashmere fibers and the 'two fuzzes' are treated with a protein dialysate which is applied to the surfaces of the fibers; then the protein and the disulfide bonds are combined again through a reaction between active protein groups in the dialysate and the disulfide bonds, so that a layer of protein membranes is formed on the surface of each dual-type cashmere fiber and dried so as to enhance the dyeing property of the dual-type fibers; and finally the dyeing operation is carried out. The method has the superiority of being high in dyeing rate and small in dyeing color difference and realizing reduction in subsequent fuzz picking operations.

Description

technical field [0001] The invention relates to the dyeing process in the cashmere textile industry, in particular to the dyeing process of two types of cashmere fibers. Background technique [0002] Cashmere fiber is a rare textile raw material resource, known as "soft gold" and "diamond fiber". However, in recent years, with the implementation of policies such as "closing mountains and prohibiting grazing", "returning farmland to forests" and "returning grazing land to grass" in my country, goats have changed from the traditional "breeding" to "capture" mode, coupled with climate warming and Due to the improvement of goat breeds and other reasons, the quality of cashmere has changed. Variations in the quality of cashmere have resulted in an increasing number of two types of fibers and "two fine hairs" in cashmere. Because the chemical composition and protein structure of the two types of cashmere fiber roots are different, the thickness of the fiber root tips is obviously...

Claims

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Application Information

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IPC IPC(8): D06M15/15D06M13/52D06M11/50D06P1/38D06P3/14D06M101/12
Inventor 陈前维李发洲
Owner 宁夏新澳羊绒有限公司
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