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Preparation method of multi-layer structure composite yarn with strain sensing and stable tensile resistance

A strain sensing, multi-layer technology, applied in yarn, coating, electrospinning and other directions, can solve the problems of poor conductivity and low sensitivity, and achieve the effects of low cost, good durability and convenient preparation

Active Publication Date: 2022-03-01
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flexible strain sensor has a large strain range and maintains high sensitivity, it lays the foundation for the interaction of human-machine interface, monitoring of personal health and treatment, but the conductivity of carbon-based materials is poor compared with metal materials, and the sensitivity is low. , and the method of coating and polymerization also has the problem of durability

Method used

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  • Preparation method of multi-layer structure composite yarn with strain sensing and stable tensile resistance
  • Preparation method of multi-layer structure composite yarn with strain sensing and stable tensile resistance
  • Preparation method of multi-layer structure composite yarn with strain sensing and stable tensile resistance

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Effect test

Embodiment 1

[0027] Embodiment 1: A kind of preparation method of multi-level structure composite yarn with strain sensing and tensile resistance stability, it comprises the following steps:

[0028] S1. Preparation of spandex / pleated yarn: spandex is used as the core yarn, the thickness of the spandex is 105D, and the carbon nanotubes are coated by yarn stretching and spraying to form a pleated structure to obtain spandex / pleated yarn;

[0029] S2. Preparation of spandex / pleat / PU yarn: Dissolve PU particles in DMF solution, mix uniformly by magnetic stirring, the magnetic stirring is carried out at room temperature, the stirring time is 3h, and the mass percent concentration is 15% electrospinning solution; The electrospinning solution is formed into a fiber web on the spandex / pleated yarn prepared in step S1 by electrospinning, the voltage of the electrospinning is 12KV, the flow rate is 0.1mL / h, the curing distance is 10cm, and the collection speed is 1r / s , to obtain spandex / pleat / PU y...

Embodiment 2

[0032] Embodiment 2: A kind of preparation method of multi-level structure composite yarn with strain sensing and tensile resistance stability, it comprises the following steps:

[0033] S1. Preparation of spandex / pleated yarn: spandex is used as the core yarn, the thickness of the spandex is 850D, and the yarn is stretched and soaked to cover liquid metal to form a pleated structure to obtain spandex / pleated yarn;

[0034] S2. Preparation of spandex / pleat / PU yarn: Dissolve PU particles in DMF solution, mix uniformly by magnetic stirring, the magnetic stirring is carried out at room temperature, the stirring time is 12h, and the mass percent concentration is 30% electrospinning solution; The electrospinning solution is formed into a fiber web on the spandex / pleated yarn prepared in step S1 by electrospinning, the voltage of the electrospinning is 20KV, the flow rate is 5mL / h, the curing distance is 20cm, and the collection speed is 9r / s. Get spandex / pleat / PU yarn;

[0035] S3...

Embodiment 3

[0037] Embodiment 3: A kind of preparation method of multi-level structure composite yarn with strain sensing and tensile resistance stability, it comprises the following steps:

[0038]S1. Preparation of spandex / pleated yarn: spandex is used as the core yarn, the thickness of the spandex is 2500D, and carbon nanotubes are covered by yarn stretching and polymerization to form a pleated structure to obtain spandex / pleated yarn;

[0039] S2. Preparation of spandex / pleat / PU yarn: Dissolve PU particles in DMF solution, mix uniformly by magnetic stirring, the magnetic stirring is carried out at room temperature, the stirring time is 5h, and the mass percent concentration is 20% electrospinning solution; The electrospinning solution is formed into a fiber web on the spandex / pleated yarn prepared in step S1 by electrospinning, the voltage of the electrospinning is 15KV, the flow rate is 2mL / h, the curing distance is 13cm, and the collection speed is 4r / s. Get spandex / pleat / PU yarn; ...

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Abstract

The invention discloses a preparation method of a multi-layer structure composite yarn with strain sensing and stable tensile resistance, and belongs to the technical field of textile. Spandex filaments are adopted as core yarns, the elastic modulus is small, the conductive fold layer is added on the basis, the stretching resistance is stable, then electrostatic spinning is adopted for surface coating, the thickness of the yarns can be adjusted and controlled, the specific surface area can be increased, then the carbon-based nanometer materials and the metal nanometer materials are loaded, a high-conductivity layer sensitive to sensing can be formed, and the sensing effect is good. The composite yarn prepared through the method has the tensile strain sensing function and the tensile resistance stabilizing function, and multifunctional development of a sensor is achieved; the multi-layer structure can well avoid human body injury and sensor performance damage caused by falling off and oxidation of the nanometer material, and is good in durability and capable of being woven. The method is easy to operate, convenient to prepare, low in cost and suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a method for preparing a multi-layer structure composite yarn with both strain sensing and tensile resistance stability. Background technique [0002] Yarn is an aggregate of fibers with different twists and bundles, which can give full play to the performance characteristics of textile fibers in the middle. It is also used as the basic structural unit of textiles. Therefore, improving the performance of fiber yarns is of great value to the diversification and additional value of textiles. Ascension is of great significance. The softness and ductility exhibited by the multi-scale structure of fiber materials (fiber-yarn-fabric-device) on the one hand ensures the excellent wearable properties (softness, comfort and breathability) of fabric sensing materials, while its diverse Forming technology (weaving, knitting, braiding, embroidery, sewing), further combined with the applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/32D02G3/34D02G3/44D01D5/00
CPCD02G3/328D02G3/34D02G3/441D01D5/0084D01D5/003D10B2401/061D10B2401/16D10B2505/00
Inventor 蔡光明窦露袁满
Owner WUHAN TEXTILE UNIV
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