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Dyeing method of lyocell fibers

A dyeing method, the technology of lyocell spinning, applied in the direction of chemical characteristics of fibers, monocomponent cellulose rayon, adding dyes in spinning solutions, etc., can solve problems such as color fastness

Inactive Publication Date: 2020-07-07
SHANGHAI SHUIXING HOME TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although plant dyes have been widely used and have a long history of application than animal dyes and mineral dyes in the long history of printing and dyeing, there are color fastness problems in the application process of plant dyes, especially the problem of light fastness, which has always been an existing problem. technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The steps of this embodiment are as follows:

[0040] 1) Prepare lyocell spinning stock solution by mass percentage: the lyocell spinning stock solution includes 6.56% cellulose slurry, 93.4% N-methylmorpholine-N oxide aqueous solution, 0.04% auxiliary agent ; Wherein, the cellulose content of the cellulose slurry is 87%, the degree of polymerization is 1400; the water content of the N-methylmorpholine-N oxide aqueous solution is 86%. The auxiliary agent is CaCl 2 and antioxidant PG.

[0041] 2) Prepare plant dye liquid: mix 50% plant dye with 50% water evenly according to mass percentage to obtain plant dye liquid; the plant dye is indigo dye.

[0042]3) Preparation of composite color paste: add 125% of graphene relative to the total amount of plant dyes to the plant dye slurry for mixing by mass percentage, and ultrasonically disperse for 1 hour, and then add 60% of rare earth ions relative to the total amount of plant dyes by mass percentage Add it to the slurry a...

Embodiment 2

[0052] The steps of this embodiment are as follows:

[0053] 1) Prepare lyocell spinning stock solution according to mass percentage: the lyocell spinning stock solution includes 10% cellulose pulp, 89.97% N-methylmorpholine-N oxide aqueous solution, 0.03% additives ; Wherein, the cellulose content of the cellulose slurry is 92%, the degree of polymerization is 1500; the water content of the N-methylmorpholine-N oxide aqueous solution is 88%. The auxiliary agent is in CaCl 2 , Pingping plus O, glycerin, antioxidant TBHQ, choose one.

[0054] 2) Prepare plant dye slurry: mix 70% plant dye and 30% water evenly according to mass percentage to obtain plant dye slurry; the plant dyes are Galla gall dye and Phellodendron barkberry dye.

[0055] 3) Preparation of composite color paste: Add 60% graphene relative to the total amount of plant dyes to the plant dye slurry for mixing by mass percentage, and ultrasonically disperse for 1 hour, and then add 65% of the rare earth ions rela...

Embodiment 3

[0065] The steps of this embodiment are as follows:

[0066] 1) Prepare lyocell spinning stock solution according to mass percentage: the lyocell spinning stock solution includes 15.5% cellulose pulp, 84.45% N-methylmorpholine-N oxide aqueous solution, 0.05% auxiliary agent Wherein, the cellulose content of the cellulose slurry is 86%, the degree of polymerization is 1100; the water content of the N-methylmorpholine-N oxide aqueous solution is 91%. The auxiliary agent is CaCl 2 , glycerin and antioxidant PG,.

[0067] 2) Prepare plant dye slurry: mix 55% plant dye and 45% water evenly by mass percentage to obtain plant dye slurry; the plant dye is madder dye.

[0068] 3) Preparation of composite color paste: add 150% graphene relative to the total amount of plant dyes to the plant dye slurry for mixing by mass percentage, and ultrasonically disperse for 1 hour, and then add 75% rare earth ions relative to the total amount of plant dyes by mass percentage Add it to the slurr...

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PUM

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Abstract

The invention relates to a dyeing method of lyocell fibers. According to the dyeing method of the lyocell fibers, vegetable dye is directly added into a spinning solution of the lyocell fibers, so that the purposes of environmental protection and dyeing avoiding are achieved; and the light color fastness of the vegetable dye is improved by utilizing the natural light shielding effect and excited state electron quenching effect of graphene. Meanwhile, lanthanum nitrate or cerium nitrate and the like are used as sources of rare earth ions, and the action of the grapheme is used in cooperation, so that the vegetable dye is firmly combined to the edge of an amorphous region and even a crystallization region to form firm multi-element combination with cellulose molecules, and the color fastnessand the stability of the natural dye are improved. The method has an obvious effect on improving colored light and performance, saves the dyeing process, and is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to a method for preparing fibers, in particular discloses a method for dyeing lyocell fibers. Background technique [0002] With the rapid development of science and technology in our country, the market consumption trend of consumers for bedding is gradually developing in the direction of health care, and they are paying more and more attention to the pursuit of high-quality quality of life. This opens up the market for new functional fibers, making this type of fiber develop rapidly in our country. With the continuous updating and improvement of the production process, the performance of the fiber will also be continuously improved, and the developed products will also have greater development. Space is favored by consumers. [0003] Lyocell fiber was born in the mid-1990s and has been highly sought after since it came out. Its characteristics include: ①It has the characteristics of comfort, excellent hand feeling, easy dyeing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/00D01F1/06D01F1/10
CPCD01F2/00D01F1/06D01F1/10
Inventor 沈守兵陈秀苗黄熠
Owner SHANGHAI SHUIXING HOME TEXTILE
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