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Preparation method of conductive super-hydrophobic carbon nanotube/polymer flexible film

A carbon nanotube film and carbon nanotube technology, applied in the field of material science, can solve problems such as complex methods, and achieve the effect of good superhydrophobic and conductive stability

Active Publication Date: 2019-12-31
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the methods for preparing self-supporting conductive carbon nanomaterial films include Langmuir–Blodget interface film-forming method (Chinese patent CN106409428A), etching method, layer-by-layer assembly method (Chinese patent CN109455708A), template method (Chinese patent CN102810360A, CN106486209A), coating Layer method (Chinese patent 107915857A), inkjet printing (ACSAppl.Mater.Interfaces), etc., but the conductive thin film material prepared by the above method is to construct a Wiener rough structure through post-processing, and the method is relatively complicated

Method used

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  • Preparation method of conductive super-hydrophobic carbon nanotube/polymer flexible film
  • Preparation method of conductive super-hydrophobic carbon nanotube/polymer flexible film
  • Preparation method of conductive super-hydrophobic carbon nanotube/polymer flexible film

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Experimental program
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Effect test

Embodiment 1

[0040] Step 1, preparing carbon nanotube film;

[0041] Ultrasonicate the solution of multi-walled carbon nanotubes / absolute ethanol with a concentration of 1.3mg / ml at room temperature for 2h, then stand still for 12h, and then ultrasonically disperse for 30min; take 20ml of carbon nanotube suspension, spray at a rate of 15ml / min, and spray to a diameter In a circular Petri dish with a diameter of 18cm and 300ml of deionized water, pay attention to the uniformity of the spray during the spraying process. If there is an uneven concentration difference, stop the spraying and prepare a new carbon nanotube film.

[0042] Step 2, preparing carbon nanotube / TPE composite film;

[0043]Dissolve 2g of TPE into 200ml of n-heptane solution, use the emulsification method to reduce the particle diameter, the emulsification rate is 1.2kr / min, and the emulsification time is 5min; magnetically stir the emulsified suspension for 3h; then use a 50ml centrifuge tube , the centrifugation rate i...

Embodiment 2

[0050] Step 1, preparing carbon nanotube film;

[0051] Sonicate the solution of multi-walled carbon nanotubes / absolute ethanol with a concentration of 2.0mg / ml at room temperature for 2 hours, then let it stand for 12 hours, and then ultrasonically disperse it for 30 minutes; take 40ml of carbon nanotube suspension and spray at a rate of 25ml / min ; Spray to a diameter of 18cm and contain 300ml of deionized water in a circular petri dish; pay attention to the uniformity of spraying during the spraying process, if there is an uneven concentration difference, stop spraying and re-prepare the carbon nanotube film.

[0052] Step 2, preparing carbon nanotube / TPE composite film;

[0053] Dissolve 2g of TPE into 200ml of n-heptane solution, use the emulsification method to reduce the particle diameter, the emulsification rate is 1.2kr / min, and the emulsification time is 5min; magnetically stir the emulsified suspension for 5h; then use a 50ml centrifuge tube , the centrifugation rat...

Embodiment 3

[0060] Step 1, preparing carbon nanotube film;

[0061] Ultrasound the solution of multi-walled carbon nanotubes / absolute ethanol with a concentration of 1.75mg / ml at room temperature for 2 hours, then let it stand for 12 hours, and then ultrasonically disperse it for 30 minutes; take 20ml of carbon nanotube suspension and spray at a rate of 20ml / min ; Spray to a diameter of 18cm and contain 300ml of deionized water in a circular petri dish; pay attention to the uniformity of spraying during the spraying process, if there is an uneven concentration difference, stop spraying and re-prepare the carbon nanotube film.

[0062] Step 2, preparing carbon nanotube / TPE composite film;

[0063] Dissolve 2g of TPE into 200ml of n-heptane solution, use the emulsification method to reduce the particle diameter, the emulsification rate is 1.2kr / min, and the emulsification time is 5min; magnetically stir the emulsified suspension for 5h; then use a 50ml centrifuge tube , the centrifugation ...

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Abstract

The invention discloses a preparation method of a conductive super-hydrophobic carbon nanotube / polymer flexible film, which comprises the following steps: spraying a carbon nanotube suspension onto anair / water interface, and standing for a period of time to form a carbon nanotube film; spraying a thermoplastic elastomer TPE solution on the upper surface of the carbon nanotube film, and curing atroom temperature to form a carbon nanotube / TPE composite film; injecting a polydimethylsiloxane solution into a water phase below the carbon nanotube / TPE composite film, and heating for a certain timeto prepare a carbon nanotube / polymer composite film; and transferring the carbon nanotube / polymer composite film to a silicone rubber elastomer, and drying to prepare a multilayer carbon nanotube / polymer composite film. The method is mild in reaction condition sand capable of achieving large-area production; according to the prepared conductive super-hydrophobic composite film, construction of multi-layer micron-scale and nano-scale coarse structures on a flexible interface is realized, the conductive film material is endowed with super-hydrophobic performance, and the influence of packagingpress molding on the sensitivity of the film is reduced.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a method for preparing a conductive superhydrophobic carbon nanotube / polymer flexible film. Background technique [0002] Flexible smart sensing materials are more and more widely used in people's lives. Flexible smart materials are mostly packaged with laminated films, but laminated materials have a great impact on the accuracy of sensor signal collection. [0003] Flexible conductive superhydrophobic multifunctional smart sensing materials have both excellent superhydrophobic properties and good strain sensing ability, so they can play an important role in the field of superhydrophobic and flexible wearable electronics. In the field of superhydrophobic, this material can be widely used in waterproof and antifouling coatings, preparation of bionic floating water robots, drag reduction, oil-water separation, and anti-condensation deicing; With good perceptio...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L101/00C08L83/04C08K3/04B32B25/08B32B25/20B32B27/06
CPCC08J5/18B32B25/08B32B25/20B32B27/06C08J2300/00C08J2483/04C08J2383/04C08J2400/00C08K3/041
Inventor 薛朝华丁亚茹贾顺田张静樊倩倩
Owner SHAANXI UNIV OF SCI & TECH