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A kind of flexible conductive yarn and preparation method thereof

A flexible conductive and yarn technology, applied in the field of flexible wearable electronic devices, can solve problems such as limitations, and achieve stable electrical properties, good electrical insulation and mechanical properties, and stable structure

Active Publication Date: 2020-10-02
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter requires a scientifically designed fabric structure to meet the electrical insulation requirements of human body contact clothing, and its application is limited. However, the flexibility, washability and durability of the conductive yarns of the two structures need to be further improved.

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 kind of flexible conductive yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of flexible conductive yarn, the steps are as follows:

[0024] Put the viscose fiber with a length of 48mm and a fineness of 0.9D in a solution composed of a cationic modifier with a concentration of 0.5% and a temperature of 50°C for 30 minutes, wash with water and dry, and combine with a length of 40mm and a fineness of 1.2D acrylic fiber and polyester fiber with a length of 34mm and a fineness of 1.5D are mixed in the drawing process at a blending ratio of 40 / 10 / 50, and a multi-component with three-layer concentric sheath-core structure is obtained through roving and spinning processes Spun yarn. Then place the multi-component spun yarn in the conductive medium dispersion liquid which is anionic carbon nanotubes, the concentration of the dispersion liquid is 0.5%, the temperature is 20°C, and it is treated for 30 minutes. After washing, it is dried at room temperature, and the treatment is repeated five times. The process prepares the conduct...

Embodiment 2

[0026] The preparation method of flexible conductive yarn, the steps are as follows:

[0027] (1) Cationic treatment: place regenerated cellulose fibers with a length of 46mm and a fineness of 0.9D in a chitosan solution with a concentration of 0.5% and a temperature of 50°C for 60 minutes, wash with water and then dry;

[0028] (2) Blending: The regenerated cellulose fiber after cationic treatment, length 40mm, fineness 1.2D bean curd acrylic fiber (bulky yarn), length 34mm, polyester staple fiber 1.5D fineness are mixed and spun into multi- Component yarn, regenerated cellulose fiber is placed in the core layer of multi-component yarn, acrylic fiber is in the middle layer, polyester staple fiber is distributed in the outer layer; the blending ratio of regenerated cellulose fiber, acrylic fiber and polyester staple fiber is 40:10 :50;

[0029] (3) Conductive medium self-assembly treatment: The multi-component yarn is repeatedly dipped in anionic carbon nanotube dispersion fo...

Embodiment 3

[0032] The preparation method of flexible conductive yarn, the steps are as follows:

[0033] (1) Cationic treatment: place regenerated cellulose fibers with a length of 48mm and a fineness of 0.95D in a DMAC solution with a concentration of 0.8% and a temperature of 70°C for 50 minutes, wash with water and then dry;

[0034] (2) Blending: The cationic-treated regenerated cellulose fiber, length 42mm, fineness 1.25D bean curd acrylic fiber (bulky yarn), length 35mm, polyester staple fiber 1.55D fineness are mixed and spun into multi- Component yarn, regenerated cellulose fiber is placed in the core layer of multi-component yarn, acrylic fiber is in the middle layer, polyester staple fiber is distributed in the outer layer; the blending ratio of regenerated cellulose fiber, acrylic fiber and polyester staple fiber is 40:10 :50;

[0035] (3) Conductive medium self-assembly treatment: The multi-component yarn is repeatedly dipped in the anionic graphene dispersion for self-assem...

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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Abstract

The invention relates to a flexible conductive yarn and a preparation method thereof. The conductive yarn constructs a three-layer concentric sheath core structure by using a mechanism of internal andexternal transfer of blended yarn. An outer layer is wrapped with a polyester staple fiber, which has good electrical insulation and mechanical properties, can effectively protect a core layer and isolates a current; the core layer is formed by a continuous regenerated cellulose fiber-based conductive medium and has good electrical conductivity; and an intermediate layer is composed of a heat-shrinkable acrylic fiber, which effectively stabilizes the yarn structure and isolates the conductive medium for protecting the core layer. The mechanism of internal and external transfer of the blendedyarn is utilized to construct the three-layer concentric sheath core structure to make the conductive yarn have excellent flexibility, stable structure and characteristics of being washable.

Description

technical field [0001] The invention relates to the technical field of flexible wearable electronic devices, in particular to a flexible conductive yarn and a preparation method thereof. Background technique [0002] With the continuous improvement of human living standards, people have put forward higher requirements for the materials they use, such as clothing. The traditional functions are mainly covering body, protection, beauty, signs, etc. Functions such as information detection and electromagnetic wave shielding, these requirements force the reasonable construction of the current transmission medium to meet the flexible characteristics of clothing, that is to say, the clothing to form conductive devices needs to be soft and conductive, and conductive yarns are generally used to achieve. [0003] At present, conductive yarns are mostly constructed in two forms: one is a composite structure yarn with an outer layer of textile fibers and an inner layer of conductive mate...

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): D02G3/04D02G3/36D02G3/44
CPCD02G3/045D02G3/36D02G3/441D10B2201/22D10B2321/10D10B2331/04D10B2401/16
Inventor 刘让同李亮刘淑萍胡泽栋耿长军
Owner ZHONGYUAN ENGINEERING COLLEGE
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