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Preparation method of a helical yarn with sensing and capacitive properties

A capacitive characteristic and helical technology, applied in the field of conductive yarn, can solve the problems of incapable of large-scale production, high production cost, and short product life, and achieve the effects of low cost, convenient preparation, and less shedding

Active Publication Date: 2021-02-26
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electronic products with multiple composite functions still face huge challenges, such as difficult deformation, poor toughness, small sensing range, low sensitivity, poor stability, single function, high production cost, and cannot be mass-produced.
Although there are many kinds of yarn-based sensors or capacitors with various structures, most of them have short lifespan and single function, and yarns with stretch sensing and capacitance properties have not been reported yet.

Method used

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  • Preparation method of a helical yarn with sensing and capacitive properties
  • Preparation method of a helical yarn with sensing and capacitive properties
  • Preparation method of a helical yarn with sensing and capacitive properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: a kind of preparation method of the helical yarn with sensing and capacitance characteristic, it comprises the following steps:

[0035] S1. Soak the thick cotton strips in the carbon nanotube dispersion, ultrasonicate for 50 minutes, then dry them in an oven with a temperature of 70°C, peel them off, and repeat the operation until the resistance per unit length of the thick cotton strips is 80Ω; The fiber length of the thick cotton strip described is 28mm, and the linear density is 1.65tex;

[0036] S2. the cotton spun yarn with a linear density of 14.5tex is prepared by ring spinning;

[0037] S3. Wrap the prepared cotton spun yarn on the spandex filament on the twisting machine to prepare wrapped yarn;

[0038] S4. Immerse the wrapped yarn in a carbon nanotube dispersion of 0.3wt% by weight, dry it, and repeat the operation 4 times until the resistance per unit length is 315Ω;

[0039] S5. Prepare 1mol / L, 15mL pyrrole solution, and add dispersant CTAB...

Embodiment 2

[0041] Embodiment 2: a kind of preparation method of the spiral yarn with sensory and capacitive properties, it comprises the following steps:

[0042] S1. Soak the thick cotton strips in the carbon nanotube dispersion, ultrasonicate for 70 minutes, then dry them in an oven with a temperature of 90°C, peel them off, and repeat the operation until the resistance per unit length of the thick cotton strips is 80Ω; The fiber length of the thick cotton strip described is 28mm, and the linear density is 1.65tex;

[0043] S2. the cotton spun yarn with a linear density of 14.5tex is prepared by ring spinning;

[0044]S3. Wrap the prepared cotton spun yarn on the rubber band on the twisting machine to prepare wrapped yarn;

[0045] S4. Immerse the wrapped yarn in a carbon nanotube dispersion of 0.3wt% by weight, dry it, and repeat the operation 4 times until the resistance per unit length is 315Ω;

[0046] S5. Prepare 1mol / L, 15mL of pyrrole solution, and add 0.052g of dispersant CTA...

Embodiment 3

[0048] Embodiment 3: a kind of preparation method of the helical yarn with sensing and capacitance characteristic, it comprises the following steps:

[0049] S1. Soak the thick cotton strips in the carbon nanotube dispersion, ultrasonicate for 60 minutes, then dry them in an oven with a temperature of 80°C, peel them off, and repeat the operation until the resistance per unit length of the thick cotton strips is 80Ω; The fiber length of the thick cotton strip described is 28mm, and the linear density is 1.65tex;

[0050] S2. the cotton spun yarn with a linear density of 14.5tex is prepared by ring spinning;

[0051] S3. Wrap the prepared cotton spun yarn on the Lycra filament on the twisting machine to prepare wrapped yarn;

[0052] S4. immerse the wrapped yarn in a manganese dioxide dispersion of 0.3wt% by weight, dry it, and repeat the operation 4 times until the resistance per unit length is 315Ω;

[0053] S5. Prepare 1mol / L, 15mL pyrrole solution, and add dispersant CTAB...

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Abstract

The invention discloses a method for preparing a spiral yarn with sensing and capacitance characteristics. The invention uses spandex filament as the core yarn, wraps carbon nanotube cotton spun yarn outside and coats carbon nanotubes, and then adopts chemical in-situ A spring structure spiral yarn is prepared by polymerizing pyrrole, and then polyvinyl alcohol / phosphoric acid gel is coated on the surface of the composite yarn spiral yarn. The yarn with this structure can be stretched and has a sensing function. At the same time, the gel acts as an electrolyte to make the yarn have capacitive properties, and as a separator, it protects the polypyrrole well, reduces the shedding of polypyrrole, and improves the use of the yarn. Lifespan; the invention combines stretch sensing and a stretchable flexible supercapacitor into one, realizing functional diversification. The preparation method provided by the invention is simple in operation, convenient in preparation, low in cost and suitable for industrialized large-scale production.

Description

technical field [0001] The invention relates to the field of conductive yarns, in particular to a method for preparing spiral yarns with sensing and capacitance characteristics. Background technique [0002] Multifunctional electronic products have broad prospects for development in the wearable field. At present, some preliminary applications have been confirmed, such as electronic sensors, outdoor sports protective clothing, space suits, medical and health industries, etc. The traditional type of strain sensor is mainly a resistance strain sensor, which produces a mechanical deformation under the action of an external force, so that the resistance value changes accordingly. There are mainly two types of resistance strain gauges: metal (wire type, foil type and film type) and semiconductor. However, strain sensors based on semiconductor or metal materials have poor flexibility and limited detection sensitivity, which is difficult to meet the requirements of portable and w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/04D02G3/32D06B3/04D06M11/70D06M11/74D06M15/333D06M15/37D06M101/06
CPCD02G3/04D02G3/328D06B3/04D06M11/70D06M11/74D06M15/333D06M15/37D06M2101/06D10B2201/02D10B2331/10
Inventor 蔡光明郝宝卫程德山毕曙光冉建华
Owner WUHAN TEXTILE UNIV
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