Conductive film of fiber composite material with interface interlocking structure and preparation method thereof

A fiber composite material, conductive film technology, applied to conductive layers on insulating carriers, equipment for manufacturing conductive/semiconducting layers, cable/conductor manufacturing, etc., can solve complex processing processes, poor interface performance, and ineffectiveness to limit the relative slippage of conductive fillers

Active Publication Date: 2021-03-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of chemical modification does not significantly enhance the interface properties, and cannot effectively limit the relative slippage of conductive fillers.
[0007] Although in the prior art disclosed above, the conductive stability of the prepared product has been significantly improved, but due to the poor interface performance between the filler and the polymer matrix, the use of a large amount of chemical reagents and the complexity of the processing process, etc., Influencing widespread use of stretchable conductors in heat therapy

Method used

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  • Conductive film of fiber composite material with interface interlocking structure and preparation method thereof
  • Conductive film of fiber composite material with interface interlocking structure and preparation method thereof
  • Conductive film of fiber composite material with interface interlocking structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A method for preparing a fiber composite conductive film with an interface interlocking structure, comprising the following steps in sequence:

[0059] (1) Encapsulated polydopamine:

[0060] Chopped carbon fiber is selected (SYT49S 12K short-cut carbon fiber produced by Zhongfu Shenying Carbon Fiber Co., Ltd.). The chopped carbon fiber is placed in acetone and stirred for 2 hours to remove surface impurities. After 2 hours of ultrasonic cleaning with deionized water drying spare;

[0061] Dissolve dopamine hydrochloride in deionized water to prepare a dopamine hydrochloride aqueous solution with a concentration of 3g / L, and adjust the pH value of the dopamine hydrochloride aqueous solution to 8.5 through a Tris-hydrochloric acid buffer solution; then use an ultrasonic water bath to disperse the chopped carbon fibers to the adjusted Add the dopamine hydrochloride aqueous solution after the pH value, and then mechanically stir at 30°C for 8 hours. After the stirring tim...

Embodiment 2

[0074] A method for preparing a fiber composite conductive film with an interface interlocking structure, comprising the following steps in sequence:

[0075] (1) Encapsulated polydopamine:

[0076] Chopped carbon fiber is selected (SYT49S 12K short-cut carbon fiber produced by Zhongfu Shenying Carbon Fiber Co., Ltd.). The chopped carbon fiber is placed in acetone and stirred for 2 hours to remove surface impurities. After 2 hours of ultrasonic cleaning with deionized water drying spare;

[0077] Dissolve dopamine hydrochloride in deionized water to prepare a dopamine hydrochloride aqueous solution with a concentration of 10g / L, and adjust the pH value of the dopamine hydrochloride aqueous solution to 9 through Tris-hydrochloric acid buffer solution; then use an ultrasonic water bath to disperse the chopped carbon fibers to the adjusted Add the dopamine hydrochloride aqueous solution after the pH value, and then mechanically stir at 45°C for 12 hours. After the stirring time ...

Embodiment 3

[0088] A method for preparing a fiber composite conductive film with an interface interlocking structure, comprising the following steps in sequence:

[0089] (1) Encapsulated polydopamine:

[0090] Chopped carbon fiber is selected (SYT49S 12K short-cut carbon fiber produced by Zhongfu Shenying Carbon Fiber Co., Ltd.). The chopped carbon fiber is placed in acetone and stirred for 2 hours to remove surface impurities. After 2 hours of ultrasonic cleaning with deionized water drying spare;

[0091] Dissolve dopamine hydrochloride in deionized water to prepare a dopamine hydrochloride aqueous solution with a concentration of 2 g / L, and adjust the pH value of the dopamine hydrochloride aqueous solution to 8 through Tris-hydrochloric acid buffer solution; then use an ultrasonic water bath to disperse the chopped carbon fibers to the adjusted In the dopamine hydrochloride aqueous solution after the pH value, mechanically stir at 30°C for 5h. After the stirring time is up, wash with...

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Abstract

The invention provides a fiber composite material conductive thin film with an interface interlocking structure and a preparation method thereof. The preparation method of the conductive thin film sequentially comprises the following steps: (1) coating polydopamine, (2) growing zinc oxide nanowires, and (3) preparing the fiber composite material conductive thin film. According to the interface interlocking structure provided by the invention, the relative slippage of the conductive fibers in the polymer matrix is effectively limited, and the stability of a conductive fiber network structure under deformation is improved, so that the stability of the electrical property and the thermal property of the obtained fiber composite material conductive film under strong tensile deformation is remarkably improved; and the conductive film has high conductive stability under strong tensile deformation and has excellent electric heating performance, and the preparation method of the fiber composite material conductive thin film is low in process requirement, simple and environment-friendly in process step and suitable for industrial application.

Description

technical field [0001] The invention belongs to the technical field of stretchable conductors, and relates to a conductive film of a fiber composite material with an interface interlocking structure and a preparation method thereof, in particular to a microcosmic interaction between a fibrous conductive filler and a stretchable polymer matrix interface. The fiber-reinforced composite conductive film with a lock structure and its preparation method are especially used as raw materials for thermal therapy equipment in clinical treatment. Background technique [0002] Stretchable conductors, due to their good conductive stability under stretching, are the basic building blocks of advanced flexible electronics, and have been widely used in fields such as flexible displays, stretchable capacitors, and smart sensors. They are used in a large number of flexible and stretchable devices developed in recent years, including bioelectrodes, transistors, mechanical sensors, energy device...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/04A61F7/02H01B5/14H01B13/00
CPCH01B5/14H01B13/0026
Inventor 聂敏杨昌华郭佳俊陈学
Owner SICHUAN UNIV
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