A low-carbon and environmentally friendly sizing method for cotton yarn

A low-carbon, environmentally friendly, cotton yarn technology, applied in plant fibers, fiber processing, textiles and papermaking, etc., can solve the problems of volatile organic solvents, operator hazards, and high energy consumption, to avoid pollution, avoid hazards, and formulate simple effect

Active Publication Date: 2019-07-12
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because solvents and sizing materials can be recycled, there is no need for sizing and desizing sewage treatment, but organic solvents are volatile, toxic, and harmful to operators, so the sizing device and drying room must be tightly closed. solvent recovery unit
In addition, the hot-melt sizing process is simple, the sizing is fast, and the sizing is less, but the energy consumption is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The low-carbon and environmentally friendly sizing method of cotton yarn in this embodiment has the following steps:

[0024] (1) Use 1-butyl-3-methylimidazolium bromide ([Bmim]Br) to desize the cotton-type fabric to remove the starch size of the cotton-type fabric, take part of the mixed solution, and measure the solid content of 8 %, use the mixed solution to sizing cotton yarn; use 1-butyl-3-methylimidazolium bromide ([Bmim]Br) to desize cotton-type fabric starch size as follows: put 2g of cotton fabric at 80°C Immerse in 50g of 1-butyl-3-methylimidazolium bromide ([Bmim]Br) for 10min. The specific operation is to first raise the temperature to 60℃ at a heating rate of 3℃ / min, and then raise the temperature to 80℃ at a rate of 1℃ / min. ℃, keep warm for 10 minutes, cool down to room temperature, and get the mixed solution after the cloth is released;

[0025] (2) Before sizing, the yarn was pre-impregnated with pure [Bmim]Br ionic liquid at 25 °C for 3 minutes, and th...

Embodiment 2

[0030] The low-carbon and environmentally friendly sizing method of cotton yarn in this embodiment has the following steps:

[0031] (1) Use 1-allyl-3-methylimidazolium chloride ([Amim]Cl) to desize the cotton-type fabric to remove the modified starch size of the cotton-type fabric, take part of the mixed solution, and measure the solid content in it. The ratio is 13%, and the mixed solution is used to sizing the cotton yarn;

[0032] (2) Before sizing, pre-soak the yarn with pure ionic liquid at 40°C for 3 minutes, put the pre-impregnated yarn into the 40°C mixture at room temperature for sizing, and fully contact and react with the yarn for 20 minutes ;

[0033] (3) Take out the yarn, put it into a beaker filled with 100mL of absolute ethanol or deionized water for double-diffusion film formation, take it out and dry it, the reduction rate of hairiness is 85-95%, and the breaking strength increases by 30-45%.

[0034] (4) The mixed solution after sizing contains the remain...

Embodiment 3

[0036] The low-carbon and environmentally friendly sizing method of cotton yarn in this embodiment has the following steps:

[0037] (1) Use 1-butyl-3-methylimidazolium chloride salt ([Bmim]Cl) to desize the cotton-type fabric, so that the carboxymethyl cellulose slurry of the cotton-type fabric is removed, and take part of the mixed solution to measure the The solid content rate is 10%, and the mixed solution is used to sizing the cotton yarn;

[0038] (2) Before sizing, pre-soak the yarn with pure ionic liquid at 30°C for 3 minutes, then put the pre-impregnated yarn into the 45°C mixture at room temperature for sizing, and fully contact with the yarn for 30 minutes ;

[0039] (3) Take out the yarn, put it into a beaker filled with 100mL of absolute ethanol or deionized water for double-diffusion film formation, take it out and dry it, the hairiness is reduced by 85-90%, and the breaking strength is increased by 45-60%.

[0040] (4) The mixed solution after sizing contains ...

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PUM

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Abstract

The invention discloses a cotton yarn low-carbon environment-friendly sizing method, which comprises the following steps of (1) using ion liquid for desizing fabrics so that pulp is removed; after the desizing, obtaining mixed liquid containing the slurry and ion liquid; (2) sufficiently contacting the yarns and the mixed liquid for reaction; (3) putting the yarns after the sufficient reaction into a coagulating bath for film forming; (4) recovering ion liquid for cyclic reutilization. The sizing method and the formula provided by the invention are simple; the operation is simple; the pulp composition is cotton fabric desizing mixed liquid; the addition of chemical agents is not needed; the waste water discharge problem is avoided; the problem of environment pollution caused by waste water from water washing after sizing is avoided; the ion liquid in the pulp after the desizing can be used for realizing cyclic utilization.

Description

technical field [0001] The invention belongs to the technical field of low-carbon sizing methods, in particular to a low-carbon and environment-friendly sizing method for cotton yarns. Background technique [0002] Yarn sizing aims to prevent or reduce yarn breakage during weaving, improve work efficiency, and treat yarn and thread with sizing to increase their strength. The research on sizing method and sizing process has a long history. In addition to the traditional axis-to-axis aqueous sizing, there have been studies on solvent sizing, foam sizing, and high-pressure sizing in the past. High-pressure sizing has small cross-sectional area, tight fiber cohesion, high sizing reinforcement, small elongation reduction, and greatly improved wear resistance. It can not only save energy, but also increase the permeability of the size, reduce hairiness, improve the quality of sizing, and reduce the breakage of looms. However, during high-pressure sizing, the application range of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/352D06M15/11D06M15/09D06M101/06D06M101/32
CPCD06M13/352D06M15/09D06M15/11D06M2101/06D06M2101/32D06M2200/40
Inventor 王明付承臣田银彩李珂宋慧君孟春丽
Owner HENAN INST OF ENG
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