Super-hydrophobic spongy three-dimensional conductive composite material as well as preparation method and application thereof

A conductive composite material, super-hydrophobic sponge technology, applied in sustainable manufacturing/processing, climate sustainability, chemical industry, etc., can solve problems such as limited application, limited hydrophobic corrosion resistance, flexible electronic device interference, etc. Simple preparation process, overcoming poor flexibility, and broadening the effect of application environment and field

Active Publication Date: 2022-07-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned problems or deficiencies, in order to solve the problems of limited hydrophobic and corrosion resistance of the existing porous conductive three-dimensional sponge composite materials, which lead to its limited application, and the interference of electromagnetic radiation on flexible electronic devices, the present invention provides a superhydrophobic Sponge-like three-dimensional conductive composite material and its preparation method and application, based on polydimethylsiloxane / carbonyl iron powder skeleton, with electromagnetic shielding properties

Method used

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  • Super-hydrophobic spongy three-dimensional conductive composite material as well as preparation method and application thereof
  • Super-hydrophobic spongy three-dimensional conductive composite material as well as preparation method and application thereof
  • Super-hydrophobic spongy three-dimensional conductive composite material as well as preparation method and application thereof

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Experimental program
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Embodiment

[0035] Step 1. Stir PDMS, carbonyl iron powder and curing agent in a container in a ratio of 10:5:1 for 10 minutes to mix well. Then, the sugar cubes are put into the prepared mixed liquid, and the mixed liquid is filled with the internal pores of the sugar cubes by vacuum impregnation at room temperature, and then placed in an oven at 90° C. for curing for 2 hours to obtain a cured composite material.

[0036] Step 2. Take the cured composite material out of the oven, remove the excess composite material on the sugar cube surface with a blade, and place it in a beaker filled with deionized water for 8 hours to completely dissolve the sugar cube; It was placed in an oven at 60° C. to dry for 12 hours to obtain a porous cured composite material.

[0037] Step 3. Dissolve STA and SEBS in THF, prepare a mixed solution with a concentration of STA of 5 wt% and a concentration of SEBS of 1 wt%, and place the solution in an ultrasonic cleaner for 30 minutes.

[0038] Step 4. After t...

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Abstract

The invention belongs to the field of flexible electronic materials, and particularly relates to a super-hydrophobic spongy three-dimensional conductive composite material and a preparation method and application thereof. According to the super-hydrophobic spongy three-dimensional conductive composite material provided by the invention, polydimethylsiloxane/carbonyl iron powder is used as a skeleton, and a super-hydrophobic conductive layer containing SEBS and AgNPs is prepared on a porous sponge skeleton of the polydimethylsiloxane/carbonyl iron powder. Due to the combined action of the three-dimensional porous structure, the carbonyl iron powder and the high-conductivity AgNPs, the composite material also has excellent electromagnetic shielding interference efficiency; the super-hydrophobic conductive layer endows excellent acid and alkali corrosion resistance. The three-dimensional porous composite material disclosed by the invention integrates the functions of sensing, super-hydrophobic surface, high stability, electromagnetic interference shielding and the like, and the preparation process is simple; the material is multifunctional, the applicability is improved, and the application environment and field of the material are widened.

Description

technical field [0001] The invention belongs to the field of flexible electronic materials, in particular to a super-hydrophobic sponge-like three-dimensional conductive composite material, a preparation method and application thereof, which are based on a polydimethylsiloxane / carbonyl iron powder skeleton and have electromagnetic shielding performance. Background technique [0002] With the rapid development of flexible electronic technology and material science, piezoresistive sensors have attracted more and more attention, which can convert the received pressure signal into a resistance signal output, which can be used in the field of wearable flexible smart sensing (such as electronic skin). ) has broad application prospects. [0003] Traditional two-dimensional flexible piezoresistive sensors are mainly composed of metals and inorganic semiconductors, and the rigidity of the structure limits their detection range, so they cannot meet the requirements in the field of fle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L53/02C08J9/36C08K3/08C08K3/18
CPCC08J9/365G01L1/18B01D17/02C08J2383/04C08J2453/02C08K3/18C08K2003/0806C08K2201/011C08K2201/001C08K2201/01Y02P20/10
Inventor 杨光杨文豪曾王镒邓龙江
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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