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Conductive leather and preparation method thereof

A leather, highly conductive technology, applied in special leather manufacturing, equipment for manufacturing conductive/semiconducting layers, cable/conductor manufacturing, etc. Interfacial interactions, low-defect graphene, method green and simple effect

Active Publication Date: 2020-04-03
SHAANXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problems of low bonding fastness between graphene and leather collagen fibers and improving the conductivity and elasticity of leather

Method used

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  • Conductive leather and preparation method thereof
  • Conductive leather and preparation method thereof
  • Conductive leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Step 1: Use the graphite rod as the anode and cathode electrodes with an interval of 2 cm, and place them in a 0.1 M ammonium sulfate solution vertically and parallel. Connect the anode and cathode electrodes to a DC stabilized 5 V power supply, and peel them off at room temperature for 120 min. The exfoliated product was ultrasonically dispersed for 50 minutes, washed repeatedly with deionized water, and freeze-dried for 24 hours to obtain highly conductive graphene oxide;

[0050] Step 2: Decompose HGO ultrasonically in NMP to obtain a 0.2 mg / mL mixture and then mix with Fe 3+ The solution is evenly mixed, Fe 3+ / C is 0.01 mmol / mg, pH is 3, stirred for 3 h at room temperature, filtered and washed with deionized water to obtain modified graphene oxide;

[0051] Step 3: Ultrasound-assisted immersion of 50 mm pig skin in (2) modified graphene oxide 30 mL to assemble the nanomaterials on the collagen surface. After half-drying in an oven at 60℃ for 1 hour, use an electric iron...

Embodiment 2

[0054] Step 1: Use the graphite paper as the anode and cathode electrodes with an interval of 1 cm, and place them in a 0.1 M sodium tripolyphosphate solution vertically and parallel. The anode and cathode electrodes are connected to a DC 10 V power supply and peeled at room temperature for 120 min. The exfoliated product was ultrasonically dispersed for 50 minutes, washed repeatedly with deionized water, and freeze-dried for 24 hours to obtain highly conductive graphene oxide;

[0055] Step 2: Decompose HGO ultrasonically in NMP to obtain a 0.2 mg / mL mixture and then mix with Cr 3+ The solution is evenly mixed, Cr 3+ / C is 0.02 mmol / mg, pH is 7, after stirring for 2h at room temperature, filtered and washed with deionized water to obtain modified graphene oxide;

[0056] Step 3: Ultrasound 30 mL of modified graphene oxide in (2) and filter it onto the surface of sheepskin with a diameter of 50 mm to assemble the nanomaterials on the collagen surface. After half-drying in an oven a...

Embodiment 3

[0059] Step 1: Use the graphite paper as the anode and cathode electrodes with an interval of 2 cm, and put them in a 0.1 M tetrabutylammonium perchlorate solution vertically and parallel. The anode and cathode electrodes are connected to a DC stabilized 15 V power supply, and they are peeled off at room temperature for 120 min. The exfoliated product was ultrasonically dispersed for 50 minutes, deionized water was washed repeatedly by centrifugation, and freeze-dried for 24 hours to obtain highly conductive graphene oxide;

[0060] Step 2: Decompose HGO ultrasonically in NMP to obtain a 0.2 mg / mL mixture and then mix with Ti 4+ The solution is evenly mixed, Ti 4+ / C is 0.03 mmol / mg, pH is 11, stirred for 2.5 h at room temperature, filtered and washed with deionized water to obtain modified graphene oxide;

[0061] Step 3: Ultrasound 30 mL of modified graphene oxide in (2) and filter it to the surface of sheepskin with a diameter of 50 mm, so that the nanomaterials are assembled on ...

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Abstract

The invention discloses a preparation method of conductive leather. Graphite, transition metal ions Mn <+>, natural leather, polyurethane and the like are used as raw materials, the transition metal ions are used as bridging agents to organically and firmly combine graphene and leather collagen fibers, polyurethane is used as a supporting body, and the three-dimensional conductive network flexibleleather base material with high strain tolerance and stable elasticity is synthesized. The preparation method comprises the following steps: 1) preparing high-conductivity graphene oxide (HGO); 2) modifying the transition metal ions on the surface of the high-conductivity graphene oxide to prepare high-dispersity modified graphene oxide; 3) constructing a flexible conductive three-dimensional network by the high-conductivity graphene oxide, the transition metal ions and the leather collagen fibers; and 4) adding a polyurethane prepolymer to construct elastic conductive leather. According to the invention, the firm combination of the leather collagen fibers and the graphene is realized, the conductivity is high, the durability is strong, the elasticity of the leather is improved, the multifunctional application of the leather is enriched, and the elastic conductive leather can be applied to multiple fields such as intelligent wearing, electromagnetic shielding, flexible sensing and thelike.

Description

Technical field [0001] The invention belongs to the technical field of conductive leather, and specifically relates to a method for preparing conductive leather. Background technique [0002] In recent years, flexible conductive materials have attracted widespread attention and have a wide range of applications in electromagnetic shielding, flexible sensors, and multifunctional bionic electronic skin. They can be used for human health detection, human-computer interaction interface, and pressure distribution visualization. Commonly used flexible polymer materials such as polyethylene terephthalate, polyurethane, polydimethylsiloxane, polyvinyl alcohol, etc. have poor ventilation and comfort. Flexible textile substrates such as knitted fabrics, woven fabrics, and non-woven fabrics Low toughness and poor recovery from tensile deformation. Natural leather is a traditional wearable product. The unique three-dimensional hierarchical structure and rich functional groups of leather pro...

Claims

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Application Information

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IPC IPC(8): H01B5/14H01B13/00C14C13/00
CPCH01B5/14C14C13/00H01B13/0026
Inventor 罗晓民蒋雯冯见艳张鹏秦荣刘丽成
Owner SHAANXI UNIV OF SCI & TECH
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