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Preparation method of self-supporting flexible conductive super-hydrophobic film

A flexible conductive and super-hydrophobic technology, applied in the field of preparation of flexible conductive and super-hydrophobic films, can solve problems such as the inability to realize large-area production of flexible conductive and super-hydrophobic functional films, and achieve continuous production, good conductivity, and improved performance. Effect

Inactive Publication Date: 2020-06-23
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flexible conductive superhydrophobic materials prepared by these methods all have a common feature, that is, the bonding fastness between the conductive superhydrophobic layer and the substrate. In addition, the existing methods cannot realize large-scale production of flexible conductive superhydrophobic functional films.

Method used

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  • Preparation method of self-supporting flexible conductive super-hydrophobic film

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preparation example Construction

[0029] A method for preparing a self-supporting flexible conductive super-hydrophobic film, using a solvent-non-solvent method to make conductive nanomaterials form a self-supporting flexible conductive super-hydrophobic film on the surface of a liquid phase system; figure 1 As shown, firstly, the mixed solution of CNT / TPE is prepared; then, the prepared mixed solution of CNT and TPE is injected into water, so that the CNT and TPE solution forms a film on the air / water interface; finally, the CNT / TPE on the water surface film, transferred out of the air / water interface, and dried to obtain a self-supporting flexible conductive superhydrophobic film.

[0030] Specifically follow the steps below:

[0031] Step 1: Prepare TPE Solution

[0032] Step 2: Prepare CNT and TPE mixed solution

[0033] Step 3: Form TPE / CNT film on the interface

[0034] The specific process of step 1 is as follows:

[0035] The high-molecular polymer TPE has the advantages of non-toxicity and good fl...

Embodiment 1

[0044]A hybrid film with conductive superhydrophobic properties was prepared by interfacial film formation. (1) Prepare a TPE / THF (tetrahydrofuran) solution with a mass concentration of 10 mg / ml, and accelerate the dissolution of the TPE (high molecular polymer) at a rate of 1.2 Kr / min by emulsification shear. (2) Add carbon nanotubes into the TPE solution, wherein the mass concentration of carbon nanotubes in the mixed solution is 2 mg / ml, and disperse the mixed solution by ultrasonic waves. (3) Measure 400ml of deionized water as a non-good solvent, pour 50ml of the mixed solution slowly (80ml / min) or add it into the water with a peristaltic pump. (4) After standing still for 30 minutes, the film is transferred out of the liquid surface using a ring device, and dried at room temperature to obtain an independent self-supporting functional film material, such as image 3 The microstructural morphology of the different surfaces of the film was observed by scanning electron mic...

Embodiment 2

[0046] A hybrid film with conductive superhydrophobic properties was prepared by interfacial film formation. (1) Prepare a TPE / THF (tetrahydrofuran) solution with a mass concentration of 15 mg / ml, and accelerate the dissolution of TPE (high molecular polymer) at a rate of emulsification shear of 1.5 Kr / min. (2) Add CNTs into the TPE solution, wherein the mass concentration of CNTs in the mixed solution is 1.5 mg / ml, and disperse the mixed solution by ultrasonic waves. (3) Measure 400ml of deionized water as a non-good solvent, pour 50ml of the mixed solution slowly (50-80ml / min) or add it to the water with a peristaltic pump. (4) After standing still for 30 minutes, the film is transferred out of the liquid surface using a ring device to prepare an independent self-supporting functional film material, such as image 3 The microstructural morphology of the different surfaces of the film was observed by scanning electron microscope as shown. Specific application effects such a...

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Abstract

The invention discloses a self-supporting flexible conductive super-hydrophobic film and a preparation method thereof, and the self-supporting flexible conductive super-hydrophobic film comprises surface microstructure design of a film material. The preparation method comprises the following steps: forming a self-supported flexible conductive super-hydrophobic film on the surface of a liquid phasesystem by using a solvent-non-solvent method, wherein the effective regulation and control of a high-molecular polymer on the microstructure of the conductive nano material on the surface of the liquid phase system is an important condition for the synergy of conductivity and super-hydrophobic performance. The process is simple. Expensive preparation instruments, high-temperature action and catalysts are not needed, consumed time is short, and film materials can be continuously collected on a large scale. The self-supporting film produced by the invention has good strength, can form a stableself-supporting structure, has good conductivity, stable super-hydrophobic performance and certain elastic conductive super-hydrophobic performance, and can effectively improve the performance of flexible conductive super-hydrophobic electronic equipment.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional films, and in particular relates to a preparation method of a self-supporting flexible conductive super-hydrophobic film. Background technique [0002] With the development of industry and technology, flexible sensor thin film materials have gradually developed from the initial metal conductive materials to multifunctional flexible sensor materials composited with nanoparticles with conductive effects. Endowing conductive flexible films with superhydrophobic properties can enable flexible conductive electronic devices to continue to work in harsh environments, such as high-humidity environments, deep-sea detection, biomedical, optoelectronic devices and other fields. In the field of smart wearables, since the sensor needs to be applied to the human body, there are certain requirements for the electrical conductivity of the flexible sensor. However, the combination with the superh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L101/00C08K3/04
CPCC08J5/18C08J2300/26C08K3/041C08K2201/001
Inventor 薛朝华丁亚茹贾顺田张静
Owner SHAANXI UNIV OF SCI & TECH
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