Stretchable calotropis gigantean fiber graphene flexible sensor

A flexible sensor and horn melon fiber technology, which is applied in plant fiber, fiber processing, biochemical fiber processing, etc., can solve the problems of decreased accuracy of test tension, poor sensing durability, poor durability, etc., and achieve good radial tensile performance , reduce wear and damage, increase durability

Inactive Publication Date: 2021-11-05
NANTONG TEXTILE & SILK IND TECH RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as the number of stretches increases, the stretching of the graphene film is uneven, resulting in a significant decrease in the accuracy of the test tensile force and poor durability.
[0005] The Chinese patent authorization publication number is CN111592761A, which discloses a new type of flexible smart fabric sensor. The carbon black in the carbon black solution is adsorbed onto the modified platinum-catalyzed silicone rubber to obtain a carbon black/platinum-catalyzed silicone rubber composite material. The surface adsorption of platinum-catalyzed rubber combined with strong carbon black results in a carbon black/platinum-catalyzed silicone rubber composite material with high sensitivity and large recoverable strain, and avoids the agglomeration of carbon black on the surface of the composite material, but it cannot obtain a conductive coating with uniform thickness , resulting in poor durability and no antibacterial function
The sensor can achieve ultra-high resistance changes under a small strain, but conductive fibers or dielectric fibers are introduced in the radial and weft directions. When the fabric is stretched, friction will be generated in the stretching direction, making the carbon fibers or dielectric fibers The electrical fiber friction is damaged, the sensing durability is poor, and this type of sensor does not have antibacterial function
[0007] The Chinese patent authorization publication number is CN111055554A, which discloses a new type of flexible smart fabric sensor and its manufacturing method. Carbon nanofibers with micro-convex lattices are prepared by electrospinning technology as pressure-sensitive material layer materials, and electrodes are covered with conductive materials. Layer, the protective layer of the fabric sensor is prepared by using high molecular elastic polymer, so that the flexible smart fabric sensor has high sensitivity, softer, thinner thickness, breathability and washability, but due to the limitation of the electrospun material itself, the sensor Does not have antibacterial function and poor durability
[0008] The Chinese patent authorization publication number is CN107233074A, which discloses a flexible and wearable nanofiber fabric sensor and its preparation method. The continuo...

Method used

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  • Stretchable calotropis gigantean fiber graphene flexible sensor
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  • Stretchable calotropis gigantean fiber graphene flexible sensor

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Experimental program
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Effect test

Embodiment 1

[0041] Such as Figure 1-3 and Figure 5 Shown, in the present invention, conductive flexible gourd fabric layer 4 comprises the following preparation steps:

[0042] S11: Place the croissant melon yarn in Na 2 CO 3 Washed in solution, Na 2 CO 3 The concentration of the solution is 20g / L, the washing time is 50min, the washing temperature is 45°C, and the washing bath ratio is 1:300. After washing, the croissant melon yarn is cleaned with deionized water to remove the impurities remaining on its surface, and then Place in an oven and dry at 60°C for 1 hour;

[0043] S12: 1-4g graphite, 1-4gNaNO 3 Mix in 100 mL of H 2 SO 4 , keep stirring in an ice bath, add 3-12g potassium permanganate during stirring, after stirring, add 150-600mL deionized water in stages, and then add appropriate amount of H 2 o 2 Terminate the reaction, obtain a graphene oxide solution by high-speed centrifugation with HCL and water, and adjust the concentration of the graphene oxide solution to ...

Embodiment 2

[0055] Among the present invention, conductive flexible croissantica fabric layer 4 comprises the following preparation steps:

[0056] S21: Wash the croissant melon yarn in NaOH solution, the concentration of NaOH solution is 20g / L, the washing time is 60min, the washing temperature is 30°C, the washing bath ratio is 1:500, and deionized water is used to treat the croissant melon yarn after washing. After the yarn is cleaned to remove impurities remaining on its surface, it is placed in an oven to dry at 30°C for 1 hour;

[0057] S22: 1-4g graphite, 1-4g NaNO 3 Mix in 100mLH 2 SO 4 , keep stirring in an ice bath, add 3-12g potassium permanganate during stirring, after stirring, add 150-600mL deionized water in stages, and then add appropriate amount of H 2 o 2 Terminate the reaction, obtain a graphene oxide solution by high-speed centrifugation with HCL and water, and adjust the concentration of the graphene oxide solution to 3 mg / mL;

[0058] S23: Soak the horned melon ...

Embodiment 3

[0066] Among the present invention, conductive flexible croissantica fabric layer 4 comprises the following preparation steps:

[0067] S31: Place the croissant melon yarn in Na 2 CO 3 Washed in solution, Na 2 CO 3 The concentration of the solution is 30g / L, the washing time is 40min, the washing temperature is 60°C, and the washing bath ratio is 1:400. After washing, the croissant melon yarn is cleaned with deionized water to remove the residual impurities on the surface, and then Place in an oven and dry at 50°C for 1 hour;

[0068] S33: 1-4g graphite, 1-4gNaNO 3 Mix in 100mLH 2 SO 4 , keep stirring in an ice bath, add 3-12g potassium permanganate during stirring, after stirring, add 150-600mL deionized water in stages, and then add appropriate amount of H 2 o 2 Terminate the reaction, obtain a graphene oxide solution by high-speed centrifugation with HCL and water, and adjust the concentration of the graphene oxide solution to 7 mg / mL;

[0069] S33: Soak the squash...

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Abstract

The invention relates to the technical field of calotropis gigantea fabric flexible sensors and particularly relates to a stretchable calotropis gigantea fiber graphene flexible sensor. The stretchable calotropis gigantea fiber graphene flexible sensor comprises a stretchable flexible sensor body, electrodes and a lead, wherein the stretchable flexible sensor body is a conductive flexible calotropis gigantea fabric layer, and the conductive flexible calotropis gigantea fabric layer is formed by weaving conductive calotropis gigantea yarns; the conductive calotropis gigantea yarns are prepared from conductive calotropis gigantea fibers; the stretchable flexible sensor body is connected with an electrode; and the electrode is connected with a lead. The calotropis gigantean yarns are coated by a padding method, the calotropis gigantean yarns obtain uniform and excellent conductive performance through process regulation and control, and then the calotropis gigantean yarns are woven by a textile technology to obtain the stretchable calotropis gigantean fiber graphene flexible sensor with an antibacterial function and durability.

Description

technical field [0001] The invention relates to the technical field of gourd fabric flexible sensors, in particular to a stretchable gourd fiber graphene flexible sensor. Background technique [0002] Traditional metal and semiconductor-based sensors have poor sensitivity, toughness and strain capacity, which leads to limitations in the application of sensors. In order to overcome these defects, multifunctional flexible wearable electronic textiles have emerged as the times require, and are used in flexible sensors, wearable electronics Equipment, electromagnetic interference shielding, etc. are more and more widely used. However, although most flexible sensors have high sensitivity and wide detection range, properties such as durability and antibacterial properties are neglected. Crow's horn melon is a natural antibacterial fiber, and graphene is an excellent antibacterial and conductive material. The combination of the two can not only make the croissant melon fiber have ...

Claims

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Application Information

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IPC IPC(8): G01L1/18D06M11/74D06M101/04
CPCG01L1/18D06M11/74D06M16/00D06M2101/04
Inventor 李刚张君泽李毓陵
Owner NANTONG TEXTILE & SILK IND TECH RES INST
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