Method for improving dye uptake and fixation rate of reactive dye on kapok fiber by using rare earth

A kapok fiber and reactive dye technology, applied in the field of textile fiber modification and dyeing, can solve the problems of dyeing, application has not been reported, dyeing speed is accelerated, etc., to improve dyeing fastness, improve dyeing uniformity and bright color. The effect of saving dyes and auxiliaries

Inactive Publication Date: 2014-05-14
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The more the amount of rare earth ions is used, the more the color absorption rate of the dye will be improved, but due to the faster dyeing speed, it is easy to cause the phenomenon of dyeing flowers
[0012] Although rare earths are used in textile dyeing, there is no report on the application of reactive dyes in kapok fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Dye uptake and color fixation of kapok fibers treated with acidified lanthanum oxide

[0036] Take the acidified lanthanum oxide of 0.5% to the fiber content, carry out the rare earth treatment and dyeing according to the method of the above-mentioned content of the invention 2, and measure the dye uptake rate and color fixation rate.

[0037] The treatment conditions are: bath ratio 1:100, acidified lanthanum oxide treatment temperature 60°C, reactive dye Novacron Blue FN-R input amount 1.5% (to the fiber amount), sodium chloride 20g / L, alkaline agent sodium carbonate 10g / L , dyeing time 30 minutes, color fixing time 60 minutes, dyeing and color fixing temperature 60 ℃. Implementation results: the dye uptake rate is 46.3%, and the color fixation rate is 43.2%.

Embodiment 2

[0039] Dye uptake and color fixation of kapok fibers treated with 0.6% acidified lanthanum oxide-citric acid complex (mixing ratio 1:1)

[0040] Get the acidified lanthanum oxide-citric acid complex of 0.6% to fiber amount, wherein acidified lanthanum oxide: citric acid=1: 1 (molar ratio), carry out rare earth by the method for above-mentioned content of the invention 2 with reactive dyestuff Novacron Blue FN-R Treatment and dyeing (the treatment process and the dyeing process are the same as in Example 2), and the dye uptake and fixation rate of the dye are measured. Implementation results: the dye uptake rate is 74.3%, and the color fixation rate is 70.5%.

Embodiment 3

[0042] Dye uptake and color fixation of kapok fibers treated with 0.6% acidified lanthanum oxide-citric acid complex (mixing ratio 1:1.6)

[0043] Get the acidified lanthanum oxide-citric acid complex to fiber amount 0.6%, wherein acidified lanthanum oxide: citric acid=1: 1.6 (mol ratio), carry out rare earth by the method for above-mentioned content of the invention 2 with reactive dyestuff Novacron Blue FN-R Treatment and dyeing (the treatment process and the dyeing process are the same as in Example 2), and the dye uptake and fixation rate of the dye are measured. Implementation results: the dye uptake rate is 64%, and the color fixation rate is 60.8%.

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Abstract

The invention relates to a method for improving the dye uptake and fixation rate of a reactive dye on a kapok fiber by using rare earth. The kapok fiber is pretreated by a rare earth element and a complex thereof and dyed by the reactive dye. Compared with the prior art, the method has the advantages that: the dye uptake and fixation rate of the reactive dye on the kapok fiber can be greatly improved, the effects of saving the dye and an aid, reducing the emission of dyeing wastewater and improving dyeing uniformity and brightness are achieved, and the color fastness of the kapok fiber dyed by the method is greatly improved.

Description

technical field [0001] The invention relates to a method for modifying and dyeing textile fibers, in particular to a method for improving the dyeing performance of kapok fiber and its textiles. Background technique [0002] Kapok fiber is currently the only natural non-cotton fiber that has not been widely developed and applied in the field of clothing. The first reason is that it is difficult to spin alone because of its short length, low strength, poor cohesion and lack of elasticity; Low, there are few dyes available and other defects in dyeing. [0003] Kapok fiber is very different from other natural cellulose fibers in composition and structure. The cellulose content of kapok fiber is lower than that of cotton fiber, and contains part of lignin and hemicellulose; structurally, kapok fiber has a unique hollow structure, with a hollowness of 90%, which is the best choice for all fibers (including natural and synthetic fibers) highest among. In terms of performance, ka...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/66D06P1/673D06P1/653
Inventor 丁颖沈勇高群艳王黎明
Owner SHANGHAI UNIV OF ENG SCI
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