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A kind of preparation method of natural pigment colored fiber

A technology of natural pigments and colored fibers, which is applied in the field of preparation of natural pigmented colored fibers, can solve the problems of low pigment concentration, poor dyeability, poor fastness, etc., and achieves bright colors, good acid and alkali resistance, and good weather resistance. Effect

Active Publication Date: 2020-02-14
ZHONGYUAN ENGINEERING COLLEGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because it is extracted from natural products, it is sometimes affected by its coexisting components or has peculiar smell itself, and the concentration of pigments is generally small, and the dyeing property is poor. Some natural food coloring agents even have chemical reactions with food raw materials. It changes color due to reaction, and its fastness is poor, and it is greatly affected by pH value, oxidation, light, temperature, etc.

Method used

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  • A kind of preparation method of natural pigment colored fiber
  • A kind of preparation method of natural pigment colored fiber
  • A kind of preparation method of natural pigment colored fiber

Examples

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Effect test

Embodiment 1

[0031] A preparation method of natural pigment colored fiber, comprising the following steps:

[0032] (1) Preparation of spinning stock solution: using natural cellulose pulp raw materials such as wood pulp, cotton pulp, bamboo pulp, hemp pulp, etc., through pulp preparation, alkali cellulose preparation and aging, and cellulose xanthate preparation and dissolving steps to prepare spinning dope.

[0033] (2) Forming of fibers: the spinning dope after filtration and defoaming is transported to the static mixer, and the amount of the spinning dope is 2L / min; The amount of pulp is 25ml / min; the content of natural pigment microcapsules in the color paste is 30%, and the colored solid matter accounts for 2% of α-cellulose in the spinning solution.

[0034] The spinning speed of the fiber is 80m / min; the H in the coagulation bath 2 SO 4 The concentration is 100g / L, Na 2 SO 4 The concentration is 310g / L, ZnSO 4 The concentration is 13g / L; the plasticizing bath contains H 2 SO...

Embodiment 2

[0048] A kind of preparation method of natural pigment colored fiber, except following feature, is identical with embodiment 1:

[0049] The natural pigment microcapsules are chlorophyll microcapsules, and the chlorophyll microcapsules are made by the following steps: taking dispersant 1g sodium lauryl sulfate powder and adding it into a three-necked flask with a capacity of 250mL, and adding 80mL deionized water at 45 ℃ water bath at a stirring rate of 1200r / min for 10 minutes, then sequentially add 4g of pigment and disperse for 10 minutes under stirring at 1200r / min, then add 0.1g of initiator azobisisonitrile, then add 10g of styrene, pass through Evacuate the air inside with nitrogen, raise the temperature to 85°C, react for 5 hours at a speed of 1200r / min and under the action of nitrogen flow, then raise the temperature to 90°C, mature for 45 minutes, stop heating, stop stirring after cooling to room temperature, and obtain The microcapsules were washed with distilled wa...

Embodiment 3

[0051] A kind of preparation method of natural pigment colored fiber, except following feature, is identical with embodiment 1:

[0052] The natural pigment microcapsules are gardenia blue pigment microcapsules, which are made by the following steps: add 90mL of water, 1g gardenia blue pigment, 0.6g Span60, 0.4g Tween80 to a three-necked flask with a capacity of 250mL, and heat up to 65°C Stir at 400r / min for 20min to obtain a gardenia blue pigment microemulsion, add dropwise 4g of methyl methacrylate, add 0.05g of benzoyl peroxide, and react at a constant temperature of 80°C for 2h. Then 1 g of acrylamide was added dropwise and reacted at a constant temperature of 80° C. for 3 hours to obtain gardenia blue pigment microcapsules with an average particle size of 6.331 μm.

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Abstract

The invention belongs to the technical field of textile raw materials and particularly relates to a method for preparing a natural pigment colored fiber. The method comprises a preparation before spinning step, wherein a color paste, which is a natural pigment color paste, is added in the preparation before spinning step, and the natural pigment color paste is prepared by dispersing water-solublenatural pigment micro-capsules and / or oil-soluble natural pigment micro-capsules. Dope dyeing is performed on a fiber through the natural pigment color paste, so that energy saving, environmental protection, bright color and high color fastness are achieved. The method conforms to the development trend of the printing and dyeing industry and has a wide development prospect.

Description

technical field [0001] The invention belongs to the technical field of textile raw materials, and in particular relates to a preparation method of natural pigment colored fiber. Background technique [0002] Natural pigments generally come from animal and plant tissues, so generally speaking, they are relatively safe for human health. Some natural pigments are themselves a kind of nutrient, which has nutritional effects, and some of them also have certain pharmacological effects. Natural pigments can also better imitate the color of natural objects, and the color tone is more natural when colored. However, because it is extracted from natural products, it is sometimes affected by its coexisting components or has peculiar smell itself, and the concentration of pigments is generally small, and the dyeing property is poor. Some natural food coloring agents even have chemical reactions with food raw materials. It changes color due to reaction, and its fastness is poor, and it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/16B01J13/14C09B67/08C08F112/08C08F220/14C08F220/56C08F220/06C08F2/26C08F2/30
CPCB01J13/14C08F2/26C08F2/30C08F112/08C08F220/14C09B67/0013D01F2/16C08F220/56C08F220/06
Inventor 郑瑾王杨柳王帅张晓莉刘凡焦明立
Owner ZHONGYUAN ENGINEERING COLLEGE
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