Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A flexible and repairable conductive silicone composite material and its preparation method and strain sensor application

A composite material and silicone technology, which is applied in the field of flexible and repairable conductive silicone composite materials and its preparation, to achieve the effects of high-efficiency room temperature self-healing ability, sensitive sensing ability, and simple operation method

Active Publication Date: 2022-02-18
QINGDAO UNIV OF SCI & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a research discloses a method for preparing a self-healing silicone elastomer, which includes: synthesizing a 1,2-dithiocyclopentyl derivative A and an amino group-containing polysiloxane derivative B through a chain extension reaction Polysiloxane containing 1,2-dithiocyclopentyl; the reversible cross-linking of organosilicon polymer network is realized by using the disulfide bond of polysiloxane terminal dithiocyclopentyl group to prepare a self-silicon Healed silicone rubber material, but the inventors found that there is still room for research on the stretchability and self-healing ability of the material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A flexible and repairable conductive silicone composite material and its preparation method and strain sensor application
  • A flexible and repairable conductive silicone composite material and its preparation method and strain sensor application
  • A flexible and repairable conductive silicone composite material and its preparation method and strain sensor application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Dissolve 10g of branched polydimethylaminosiloxane (Mn: 2000), 1.38g of 3,4-dihydroxybenzaldehyde (purity: 98%) in an appropriate amount of tetrahydrofuran (the monomer concentration is kept at about 0.1g / ml) , mixed uniformly at 60°C, and reacted for 12 hours to obtain polysiloxane containing imine bonds and catechol residues. Disperse 1g of amino-modified multi-walled carbon nanotubes (amino group: 0.45wt%) and 0.04g of 3,4-dihydroxybenzaldehyde (purity: 98%) in an appropriate amount of tetrahydrofuran, mix uniformly at 60°C, and react for 12 hours. Multi-walled carbon nanotubes containing imine bonds and catechol residues were obtained. 10g of polysiloxane containing imine bonds and catechol residues and 1g of multi-walled carbon nanotubes containing imine bonds and catechol residues were ultrasonically dispersed at room temperature, and 1.4g of zinc chloride was added to make Metal ion: ligand is equal to 1:2. Continue to stir at room temperature and sonicate for ...

Embodiment 2

[0071] The procedure described in Example 1 was repeated, except that 1.38 g of 3,4-dihydroxybenzaldehyde was replaced by 1.52 g of 3,4-dihydroxyphenylacetaldehyde (purity: 98%).

Embodiment 3

[0073] Repeat the steps described in Example 1, except that 10 g of branched polydimethylaminosiloxane (Mn: 2000) is replaced by 10 g of branched polydimethylaminosiloxane (Mn: 5000).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention relates to a flexible and repairable conductive silicone composite material, a preparation method thereof and the application of a strain sensor, belonging to the field of flexible composite materials. The present invention uses the monomer derivative B containing catechol residues to modify the polysiloxane derivative A containing amino group and the multi-walled carbon nanotube D modified by amino group through Schiff base reaction to obtain imine bond and catechin respectively. Polysiloxane derivative C of phenolic residue and modified multi-walled carbon nanotube E containing imine bond and catechol residue, the polysiloxane derivative containing imine bond and catechol residue C and the modified multi-walled carbon nanotubes E containing imine bonds and catechol residues are compounded, and zinc chloride is added, stirred and ultrasonicated to obtain silicones based on hydrogen bonds, metal coordination bonds and imine bonds Composite materials, which have efficient room temperature self-healing ability, excellent mechanical properties, excellent electrical conductivity and sensitive sensing ability. Applications in flexible sensing, electronic skin, wearable electronics, and soft robots can be applied.

Description

technical field [0001] The invention belongs to the field of flexible composite materials, in particular to a flexible and repairable conductive silicone composite material and a preparation method thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the continuous development of polymer composite materials, the demand for various flexible composite conductive devices in people's daily life is increasing. Among them, the most prominent research fields are flexible sensing, electronic skin, wearable electronic products, In the direction of soft robots, various flexible composite conductive devices often need to have the ability to be stretchable and self-healing. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/08C08K9/04C08K3/04C08K3/16C08G77/388
CPCC08K9/04C08K3/041C08K3/16C08G77/388C08K2003/168C08K2201/001
Inventor 刘月涛张凯铭高传慧武玉民
Owner QINGDAO UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products