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A method for separating, recycling and reusing blended fabrics

A blended fabric, separation and recycling technology, applied in recycling technology, textile decomposition and recovery, textiles and papermaking, etc., can solve the problems of difficult to achieve recycling of blended products, difficult to achieve industrialization, poor separation effect, etc. Low, high recovery efficiency, small performance loss effect

Inactive Publication Date: 2021-08-31
WUYI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proportion of the first and second types is not high, and most of them are the third type; in recycling, they are all aimed at the regeneration and recycling of single material products such as pure cotton, and it is difficult to realize the regeneration and recycling of blended products. The separation effect and high cost of chemical regeneration recycling by dissolution and degradation separation are difficult to achieve industrialization. Therefore, the recycling of waste polyester or polyester-cotton textiles in my country mainly uses physical methods to prepare low-value-added recycled products such as mops and cotton fillings; Therefore, it is very urgent to develop and introduce advanced recycling technology, and accelerate the industrialization process of high value-added utilization technology

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
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  • A method for separating, recycling and reusing blended fabrics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The method for separating, recycling and reusing red polyester and viscose blended fabrics, the specific steps are as follows:

[0028] (1) Color measurement and classification, using a high-speed digital camera to collect images of polyester and viscose blended fabrics, converting them into HSV format, extracting hue, and then classifying polyester and viscose blended fabrics according to the hue.

[0029] (2) Fibrillation treatment. The polyester and viscose blended fabrics are fibrillated by mechanical hooking, and the classified polyester and viscose blended fabrics are disassembled into evenly dispersed polyester and viscose blended fibers.

[0030] (3) Dispersion and conductivity pretreatment, take 1g of polyester and viscose mixed fiber (after measurement, polyester accounts for 50% in the mixed fiber, viscose accounts for 50%, and the degree of separation is 1), according to the following components and weight Percentage: Water (92%), sodium silicate (2%), sodiu...

Embodiment 2

[0035] The method for separating, recycling and reusing blue polyester and cotton blended fabrics, the specific steps are as follows:

[0036] (1) Color measurement and classification, using a high-speed digital camera to collect images of polyester and cotton blended fabrics, converting them into HSV format, extracting hue, and then classifying polyester and cotton blended fabrics according to the hue.

[0037] (2) Fibrillation treatment. The polyester and cotton blended fabrics are fibrillated by mechanical hooking, and the classified polyester and cotton blended fabrics are disassembled into evenly dispersed polyester and cotton blended fibers.

[0038] (3) Dispersion and conductivity pretreatment, take 1 g of polyester and cotton blended fiber (after measurement, polyester accounts for 65% in the blended fiber, cotton accounts for 35%, and the degree of separation is 1.86), according to the following components and weight percentages: Water (35%), sodium silicate (30%), so...

Embodiment 3

[0043] Gray acrylic fiber and wool blended fabric separation recycling method, concrete steps are as follows:

[0044] Step (1) to step (5) compared with Example 1, the difference is: the blended fabric is gray acrylic fiber and wool blended fabric (after measuring, acrylic fiber accounts for 70%, wool accounts for 30%, and the degree of separation is 2.3); The components and percentages by weight of the dispersibility and conductivity treatment liquid that step (3) adopts are water (56%), sodium silicate (20%), sodium chloride (8%), electrolytic agent B (8%) , dispersant T (8%), the treatment conditions are: temperature 60 ℃, bath ratio 35:1, time 20min; Step (4) disperses, adopts mechanical vibration method, acrylic fiber and wool mixed fiber are dispersed into uniform thin layer; Step In (5), the distance between the two plates is 80cm, the voltage is 10000V and the electrification time is 50s. Other processes are the same as in Example 1.

[0045] Step (6) is reclaimed a...

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Abstract

The invention discloses a method for separating, recycling and reusing blended fabrics, which comprises the following steps: (1) color measurement and classification, measuring the color of the blended fabrics, and then classifying them according to the hue; (2) fiberizing the classified fabrics The blended fabric is disassembled into uniformly dispersed multi-component mixed fibers; (3) the dispersion and conductivity of the multi-component mixed fibers are pre-treated to improve the dispersion and conductivity of the multi-component mixed fibers, and to increase the The conductivity difference of the fiber; (4) Dispersion, using mechanical vibration or air sedimentation method, the mixed fiber is dispersed into a uniform thin layer; (5) Electrostatic adsorption separation, the multi-component mixed fiber after pretreatment and dispersion is placed Electric field, use the electric field force to separate the component fibers upwards, fast and slow, or downwards to separate far and near; (6) Recycling and reuse treatment. The method has high separation degree for blended fabrics, high value-added recycling rate and low recycling cost.

Description

technical field [0001] The invention belongs to the technical field of recovery and reuse of waste textiles, in particular to a method for separation, recovery and reuse of blended fabrics. Background technique [0002] At present, there are three main ways to deal with these waste textiles: one is to sell them as second-hand clothing or donate them to poor groups; the other is to recycle, including physical recycling and chemical recycling; and the third is to incinerate and bury. The proportion of the first and second types is not high, and most of them are the third type; in recycling, they are all aimed at the regeneration and recycling of single material products such as pure cotton, and it is difficult to realize the regeneration and recycling of blended products. The separation effect and high cost of chemical regeneration recycling by dissolution and degradation separation are difficult to achieve industrialization. Therefore, the recycling of waste polyester or polye...

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
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01G11/04D06M11/79D06M11/13D06M101/32D06M101/06D06M101/28D06M101/10D06M101/34
CPCY02W30/66
Inventor 巫莹柱杨子航杨凤锦郑金仁梁家豪谢权沛梁雅瑶刘海潮
Owner WUYI UNIV
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