Method for preparing nylon-PEDOT (poly(3,4-ethylenedioxythiophene)) compound conductive fabric through in-situ polymerization

A composite conductive and in-situ polymerization technology, which is applied in textiles and papermaking, fiber types, fiber treatment, etc., can solve the problems of PEDOT processing difficulties, etc., and achieve good flame retardancy, little pollution, and little change in strength.

Inactive Publication Date: 2012-12-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conductive polymer poly 3,4-ethylenedioxythiophene (PEDOT for short), has received extensive attention due to its high electrical conductivity, good environmental stability and film transparency, and has been widely used in antistatic coatings, photodiodes , sensors, etc. have also shown broad application prospects, but due to the insoluble and non-melting of PEDOT, it is difficult to process and handle, thus limiting its commercial application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, the nylon fabric is treated with a hydrochloric acid solution with pH = 4, two dipping and two rolling, the dipping time is 10min, and the scrapping rate is 70%; then the treated nylon fabric is immersed in EDOT concentration of 0.1mol / L, ferric chloride concentration 0.2mol / L, in 20g / L sodium polystyrene sulfonate solution. The reaction temperature is 70°C, and the reaction time is 10h. After the reaction is complete, remove the fabric. First wash off the surface attachments with deionized water, then soak and wash the fabric with absolute ethanol until the washing solution is colorless, and dry at 60°C to obtain a nylon / PEDOT composite conductive fabric. The square resistance of the conductive fabric is 0.20KΩ / □.

Embodiment 2

[0022] First, the nylon fabric is treated with a hydrochloric acid solution with pH = 4, two dipping and two rolling, the dipping time is 5 minutes, and the pass rate is 70%; then the treated nylon fabric is immersed in EDOT concentration of 0.1mol / L, ferric chloride concentration 0.2mol / L, in 15g / L sodium polystyrene sulfonate solution. The reaction temperature is 70°C, and the reaction time is 15h. After the reaction is complete, remove the fabric. First wash off the surface attachments with deionized water, then soak and wash the fabric with absolute ethanol until the washing solution is colorless, and dry at 60°C to obtain a nylon / PEDOT composite conductive fabric. The square resistance of the conductive fabric is 1.89KΩ / □.

Embodiment 3

[0024] First, the nylon fabric is treated with a hydrochloric acid solution with pH = 4, two dipping and two rolling, the dipping time is 10min, and the scrapping rate is 70%; then the treated nylon fabric is immersed in EDOT concentration of 0.1mol / L, ferric chloride concentration 0.2mol / L, in 20g / L sodium polystyrene sulfonate solution. The reaction temperature is 60° C., and the reaction time is 10 h. After the reaction is complete, remove the fabric. First wash off the surface attachments with deionized water, then soak and wash the fabric with absolute ethanol until the washing solution is colorless, and dry at 60°C to obtain a nylon / PEDOT composite conductive fabric. The square resistance of the conductive fabric is 2.75KΩ / □.

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Abstract

The invention relates to a method for preparing nylon-PEDOT (poly(3,4-ethylenedioxythiophene)) compound conductive fabric through in-situ polymerization. The method comprises the following steps of: 1) pretreating a nylon fabric by using acidic solution, and padding the nylon fabric for times, wherein the dipping time is 5-15 minutes and the padding residual rate is 60-90 percent; and 2) dipping the nylon fabric in mixed solution containing ferric chloride, sodium polystyrenesulfonate and 3, 4-ethylenedioxythiophene (EDOT), keeping reaction temperature to be 30-90DEG C, keeping reaction time to be 1-20h, and after reaction is ended, taking out, washing and drying the fabric to obtain the nylon-PEDOT compound conductive fabric. By adopting the method, in combination with a padding technology which is commonly used for dyeing and finishing, the PEDOT can be enabled to rapidly enter the internal part of nylon fibers, the reaction time is shortened and the environmental pollution is small; and the nylon-PEDOT compound conductive fabric can be applied to the fields of textile chemical sensing and biological remediation materials, electromagnetic shielding materials and the like.

Description

technical field [0001] The invention belongs to the field of preparation of composite conductive fabrics, in particular to a method for preparing nylon / PEDOT composite conductive fabrics by in-situ polymerization. Background technique [0002] Due to their unique chemical and electrochemical properties, conductive polymer materials have broad application prospects in the fields of conductive coatings, secondary batteries, optoelectronic devices, gas sensors, electromagnetic shielding, metal anti-corrosion and stealth technology. [0003] Conductive polymer poly 3,4-ethylenedioxythiophene (PEDOT for short), has received extensive attention due to its high electrical conductivity, good environmental stability and film transparency, and has been widely used in antistatic coatings, photodiodes , sensors, etc. have also shown broad application prospects, but due to the insolubility and infusibility of PEDOT, it is difficult to process and handle, thus limiting its commercial appl...

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 Applications(China)
IPC IPC(8): D06M15/356D06M15/63D06M11/28C08G61/12D06M101/34
Inventor 李戎何劲松文凤刘瑜顾峰
Owner DONGHUA UNIV
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