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Method for preparing magnetic carbon cloth from non-woven fabric waste, magnetic carbon cloth and application thereof

A technology of non-woven fabrics and magnetic carbon, applied in textiles and papermaking, physical treatment, fiber treatment, etc., can solve problems such as complex process, high ash content of carbonized materials, cost increase, etc., achieve wide sources, simple preparation and operation process, To achieve the effect of effective use

Active Publication Date: 2021-10-29
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, using the traditional atmosphere and high temperature method to dispose of non-woven fabric waste, the prepared carbonized material not only has high ash content but also has poor electrical conductivity and magnetic properties.
Even though the resistivity of the fired carbon cloth can be reduced to a certain extent by loading some metal oxides on the surface of the non-woven carbonized material in the later stage, the post-loading process is not only complicated but also greatly increases the cost of making carbon cloth from non-woven fabric waste.

Method used

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  • Method for preparing magnetic carbon cloth from non-woven fabric waste, magnetic carbon cloth and application thereof
  • Method for preparing magnetic carbon cloth from non-woven fabric waste, magnetic carbon cloth and application thereof
  • Method for preparing magnetic carbon cloth from non-woven fabric waste, magnetic carbon cloth and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 The influence of the molar ratio of iron ion and peroxodisulfate radical on the resistivity and magnetic induction of magnetic carbon cloth

[0029] According to the molar ratio of iron ion and peroxodisulfate 1:1, 1.5:1, 1.8:1, 2:1, 3:1, 4:1, 5:1, 5.2:1, 5.5:1, 6:1 respectively Weigh ferric chloride and sodium peroxodisulfate, dissolve them in water at the same time, stir under sealed conditions until the ferric chloride and sodium peroxodisulfate are completely dissolved, and prepare a ferric sulfur solution composed of ferric chloride and sodium peroxodisulfate. The concentration of peroxodisulfate in iron sulfur solution is 0.01M. The non-woven fabric used in this example is polypropylene non-woven fabric. According to the solid-liquid ratio of 1:1 mg / mL, the polypropylene non-woven fabric is immersed in the corresponding iron sulfur solution, soaked for 30 minutes under sealed conditions, and then the polypropylene non-woven fabric is taken out. The s...

Embodiment 2

[0035] Influence of peroxodisulfate concentration on the resistivity and magnetic induction intensity of magnetic carbon cloth in the iron sulfur solution of embodiment 2

[0036] Weigh ferric chloride and sodium peroxodisulfate respectively according to the molar ratio of iron ion to peroxodisulfate 5:1, and then dissolve them in water at the same time, and stir under sealed conditions until ferric chloride and sodium peroxodisulfate are completely dissolved. Iron sulfur solution composed of iron oxide and sodium peroxodisulfate. The concentration of peroxodisulfate in iron sulfur solution is 0.005M, 0.007M, 0.009M, 0.01M, 0.03M, 0.05M, 0.052M, 0.055M, 0.06M, respectively. The non-woven fabric of the present embodiment is a viscose fiber non-woven fabric. According to the solid-to-liquid ratio of 1: 1.5 mg / mL, the viscose fiber non-woven fabric is immersed in the corresponding iron sulfur solution, and soaked for 45 minutes under sealed conditions, and then Take out the visc...

Embodiment 3

[0041] Example 3 Effect of Microwave Power on the Resistivity and Magnetic Induction of Magnetic Carbon Cloth

[0042] Weigh ferric chloride and sodium peroxodisulfate respectively according to the molar ratio of iron ion to peroxodisulfate 5:1, and then dissolve them in water at the same time, and stir under sealed conditions until ferric chloride and sodium peroxodisulfate are completely dissolved. Iron sulfur solution composed of iron oxide and sodium peroxodisulfate. The concentration of peroxodisulfate in iron sulfur solution is 0.05M respectively. The non-woven fabric of this embodiment is an acrylic non-woven fabric. According to the solid-to-liquid ratio of 1:2 mg / mL, the acrylic non-woven fabric is immersed in the corresponding iron sulfur solution, and soaked for 60 minutes under sealed conditions, and then the acrylic non-woven fabric is taken out. Allow to dry until its moisture content is 40%. The acrylic non-woven fabric is activated by microwave, the microwave...

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Abstract

The invention discloses a method for preparing magnetic carbon cloth from non-woven fabric waste, which comprises the following steps: respectively weighing ferric chloride and sodium peroxodisulfate, then dissolving them in water, stirring until they are completely dissolved under sealed conditions, and preparing iron sulfur solution ; Immerse the non-woven fabric in the iron sulfur solution, and soak it for 30-60 minutes under sealed conditions, then take out the non-woven fabric and dry it until its moisture content is 20%-40%; Microwave activation is carried out in the middle; after the preset time is reached, the microwave activation is terminated, and the magnetic carbon cloth is obtained after cooling to room temperature. The content of the present invention also includes the magnetic carbon cloth prepared by the method and its application. The invention strengthens the carbonization process of non-woven fabric waste through iron ions and peroxodisulfate radicals, simultaneously generates and effectively loads magnetic ferrite on the surface of the carbon fabric. The resistivity of the magnetic carbon cloth prepared by using the non-woven fabric waste in the invention is at least 1.37Ω•m, and the magnetic induction intensity is 0.12mT.

Description

technical field [0001] The invention relates to the field of resource utilization of non-woven fabric waste, in particular to a method for preparing magnetic carbon cloth from non-woven fabric waste, the magnetic carbon cloth and its application. Background technique [0002] The non-woven fabric industry has the characteristics of short production cycle, high degree of automation and wide product audience. The production of nonwovens generates a lot of scrap and other waste. For these wastes, there is still no efficient and reasonable technology to dispose of them in the industry. Except for a small amount of waste that can be returned to the furnace for remelting, most of the waste is currently disposed of in two ways: landfill and incineration, and the added value of waste utilization is low. During the landfill process, dyeing agents in non-woven fabrics can easily cause soil and groundwater pollution. However, the application of incineration technology to dispose of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M10/00D06M11/28D06M11/56D06M101/20
CPCD06M10/003D06M11/28D06M11/56D06M2101/20
Inventor 黄涛刘万辉宋东平张树文刘龙飞陶骏骏周璐璐徐娇娇
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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