Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for refining cotton fibers

A cotton fiber and scouring technology, applied in the field of dyeing and finishing, can solve the problems of difficult treatment, large amount of alkali consumption, high COD/BOD of wastewater, and achieve the effects of reducing wastewater discharge, saving water resources, and good scouring effect

Active Publication Date: 2016-12-07
ZHEJIANG SCI-TECH UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the amount of alkali used in the cotton fiber scouring process is large, and the wastewater produced is high in COD / BOD and difficult to treat, the invention provides a cotton fiber scouring method, which only needs a small amount of water and alkali in the scouring process, which is energy-saving and environmentally friendly, and reduces waste water discharge

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of scouring method of cotton fiber, comprises the steps:

[0027] (1) Pretreatment of cotton fiber: Weigh 10 g of cotton fiber, immerse it in 0.125 mol / L sodium hydroxide solution, fully wet it, control the liquid-carrying rate to 200%, and set it aside.

[0028] (2) Put the cotton fiber obtained in step (1) into D5, and control the mass ratio of cotton fiber to D5 as m 棉 :m D5 =1:30, control the temperature at 90°C, and keep warm for 20 minutes.

[0029] (3) Wash the cotton fiber obtained in step (2) with water, and dry it in an oven at 105°C to constant weight, take it out and put it in a desiccator to balance for 30 minutes.

Embodiment 2

[0031] A kind of scouring method of cotton fiber, comprises the steps:

[0032] (1) Pretreatment of cotton fiber: Weigh 10g of cotton fiber, immerse it in 0.5 mol / / L potassium hydroxide solution, fully wet it, control the liquid retention rate to 300%, and set it aside.

[0033] (2) Put the cotton fiber obtained in step (1) into D5, and control the mass ratio of cotton fiber to D5 as m 棉 :m D5 =1:40, control the temperature at 70°C, and keep warm for 40 minutes.

[0034] (3) Wash the cotton fiber obtained in step (2) with water, and dry it in an oven at 110°C to constant weight, take it out and put it in a desiccator to balance for 30 minutes.

Embodiment 3

[0036] A kind of scouring method of cotton fiber, comprises the steps:

[0037] (1) Cotton fiber pretreatment: Weigh 10g of cotton fiber, immerse it in 0.75g / L sodium hydroxide solution, fully wet it, control the liquid-carrying rate to 100%, and set it aside.

[0038] (2) Put the cotton fiber obtained in step (1) into D5, and control the mass ratio of cotton fiber to D5 as m 棉 :m D5 =1:50, control the temperature at 40°C, and keep warm for 70 minutes.

[0039] (3) Wash the cotton fiber obtained in step (2) with water, and dry it in an oven at 105°C to constant weight, take it out and put it in a desiccator to balance for 30 minutes.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of dyeing and finishing and particularly relates to a method for refining cotton fibers. The method for refining the cotton fibers comprises a step (1) of preprocessing the cotton fibers: soaking the cotton fibers in strong base solution with a concentration of 0.125-0.75 mol / L to perform full wetting, and controlling the take-up of the cotton fibers to be 100-300% for standby application; a step (2) of refining the cotton fibers: placing the cotton fibers obtained through the step (1) in decamethylcyclopentasiloxane (D5) to perform dipping treatment, controlling the mass ratio of the cotton fibers to D5 to be that m cotton: mD5=1:30-50, controlling the dipping temperature to be 40-90 DEG C, and performing heat insulation for 20-70 min; a step (3) of washing the cotton fibers obtained through the step (2), and drying the cotton fibers. According to the method, only a small amount of water and alkali are consumed in the refining process, wastewater discharge is reduced, and the method is of ecological environmental protection significance.

Description

technical field [0001] The invention belongs to the technical field of dyeing and finishing, and in particular relates to a scouring method for cotton fibers. Background technique [0002] In addition to cellulose as the main component, natural cotton fiber also contains 6% to 10% natural impurities. During the dyeing process, these impurities affect the hygroscopicity of cotton fibers, resulting in low dyeing rate and uneven dyeing. Therefore, before dyeing, it is necessary to carry out scouring for the main purpose of removing natural impurities. The natural impurities in cotton fiber are mainly the companions of cotton fiber and cotton seed hulls. The accompanying organisms of cotton fiber mainly include pectin, nitrogenous substances, wax, ash, pigment and so on. Among them, the main component of pectin is the derivative of pectic acid; nitrogen-containing substances mainly exist in the innermost cell cavity of the fiber in the form of protein; waxes mainly include ali...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/513D06M11/38D06B3/02D06M101/06
CPCD06B3/02D06M11/38D06M13/513D06M2101/06
Inventor 邵建中朱振旭刘今强周岚黄益
Owner ZHEJIANG SCI-TECH UNIV