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Intrinsic stretchable conductive polymer material as well as preparation method and application thereof

A technology of conductive polymers and elastic materials, applied in the field of flexible electronics, can solve the problems of large resistance changes and difficulties in meeting wearable devices or biomedical devices, and achieve improved stretchability, high conductivity, and increased spacing Effect

Active Publication Date: 2022-02-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem in the prior art that the conductive polymer material coating of intrinsically stretchable conductive materials has too large a resistance change when the strain is 100%, and it is difficult to meet the needs of wearable devices or biomedical devices, and provides A stretchable polypyrrole coating and its preparation method and application

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  • Intrinsic stretchable conductive polymer material as well as preparation method and application thereof
  • Intrinsic stretchable conductive polymer material as well as preparation method and application thereof
  • Intrinsic stretchable conductive polymer material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] A method for preparing an intrinsically stretchable conductive polymer material, the specific steps are as follows:

[0055] (1) Immerse the elastic material in an aqueous solution of pyrrole monomer with a concentration of 6 wt% for 2 hours; the elastic material is a one-dimensional fiber material made of rubber, and the elongation at break is 1000%;

[0056] (2) move the product of step (1) into the mixed aqueous solution of ferric chloride and sodium sulfosalicylate and react at room temperature for 8h; Concentration is 8wt%, and the molar ratio of ferric chloride and sodium sulfosalicylate is 0.5:1;

[0057] (3) Wash the product of step (2) three times with deionized water and then dry to obtain an intrinsically stretchable conductive polymer material.

[0058] The prepared intrinsically stretchable conductive polymer material consists of a rubber matrix and a polypyrrole coating doped with sodium sulfosalicylate, and the XPS spectrum of the polypyrrole coating dop...

Embodiment 2

[0072] A method for preparing an intrinsically stretchable conductive polymer material, the specific steps are as follows:

[0073] (1) Immerse the elastic material in an aqueous solution of 12wt% pyrrole monomer for 1 hour; the elastic material is a three-dimensional material made of polyurethane with an elongation at break of 800%;

[0074] (2) move the product of step (1) into the mixed aqueous solution of ferric chloride and sodium sulfosalicylate and react at room temperature for 16h; Concentration is 12wt%, and the mol ratio of ferric chloride and sodium sulfosalicylate is 4:1;

[0075] (3) Wash the product of step (2) five times with deionized water and then dry to obtain an intrinsically stretchable conductive polymer material.

[0076] The prepared intrinsically stretchable conductive polymer material consists of a polyurethane matrix and a polypyrrole coating doped with sodium sulfosalicylate, and the XPS spectrum of the polypyrrole coating doped with sodium sulfosa...

Embodiment 3

[0081] A method for preparing an intrinsically stretchable conductive polymer material, the specific steps are as follows:

[0082] (1) Immerse the elastic material in an aqueous solution of pyrrole monomer with a concentration of 18wt% for 6 hours; the elastic material is a three-dimensional material, made of polydimethylsiloxane, and the elongation at break is 500%;

[0083] (2) move the product of step (1) into the mixed aqueous solution of ferric chloride and sodium sulfosalicylate and react at room temperature for 12h; Concentration is 10wt%, and the mol ratio of ferric chloride and sodium sulfosalicylate is 2:1;

[0084] (3) Wash the product of step (2) four times with deionized water and then dry to obtain an intrinsically stretchable conductive polymer material.

[0085] The obtained intrinsically stretchable conductive polymer material is composed of a polydimethylsiloxane matrix and a polypyrrole coating doped with sodium sulfosalicylate, and a polypyrrole coating d...

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Abstract

The invention relates to an intrinsic stretchable conductive polymer material as well as a preparation method and application thereof. The preparation method comprises the following steps: depositing polypyrrole on the surface of an elastic material by taking sodium sulfosalicylate as a doping agent and ferric chloride as an oxidizing agent through an in-situ polymerization method to prepare the intrinsic stretchable conductive polymer material. The prepared intrinsic stretchable conductive polymer material is composed of an elastic material matrix and a polypyrrole coating doped with sodium sulfosalicylate. The intrinsic stretchable conductive polymer material is used as a stretchable electronic circuit of a flexible electronic device, or used as an electrode of a flexible supercapacitor, or used for manufacturing a wrinkled conductive polymer material. The preparation method is simple, sodium sulfosalicylate serves as a doping agent, ferric chloride serves as an oxidizing agent, the high conductivity of the polypyrrole coating is guaranteed, meanwhile, the polypyrrole molecular chain distance is increased, the stretchability of the polypyrrole coating is improved, and the resistance variation of a product when the strain is 100% is far lower than that in the prior art.

Description

technical field [0001] The invention belongs to the field of flexible electronics, and in particular relates to an intrinsically stretchable conductive polymer material and a preparation method and application thereof. Background technique [0002] Flexible electronics have been extensively studied in the fields of electronic skin, soft robotics, wearable electronics, and personal health monitoring due to their high flexibility, low-cost fabrication, and light weight and portability. However, flexible electronics face challenges in applications that undergo large tensile deformations or tightly bond to curved surfaces (e.g., human skin), which has prompted the emergence of flexible and stretchable electronics. [0003] Intrinsically stretchable conductive materials are an effective way to realize stretchable electronic devices, which can be fabricated at low cost and on a large scale. The way of blending conductive materials with stretchable materials is an effective means ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/37D06M13/256D06M11/28C08J7/044C08J5/18C08L83/04C08L75/04C08L21/00H01B1/12H01B13/00D06M101/16D06M101/32
CPCD06M15/37D06M13/256D06M11/28C08J7/044C08J7/0427C08J5/18H01B1/12H01B13/0026D06M2101/16D06M2101/32C08J2383/04C08J2321/00C08J2375/04
Inventor 毛吉富李沂蒙王富军王璐
Owner DONGHUA UNIV