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Preparation method of regenerated cellulose conductive film with flexible conductivity and stable conductivity

A technology of regenerated cellulose film and regenerated cellulose, which is used in hybrid capacitor current collectors, electromagnetic measuring devices, electric/magnetic solid deformation measurement, etc., can solve the problems of weak interface bonding strength and high cost, and achieve product performance, environmental protection, cost The effect of low and high conductivity

Active Publication Date: 2021-11-30
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although graphene covering the surface of AgNWs can improve the stability of conductors, the problems of high cost and weak interfacial bonding strength still need to be controlled and improved.

Method used

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  • Preparation method of regenerated cellulose conductive film with flexible conductivity and stable conductivity
  • Preparation method of regenerated cellulose conductive film with flexible conductivity and stable conductivity
  • Preparation method of regenerated cellulose conductive film with flexible conductivity and stable conductivity

Examples

Experimental program
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Embodiment 1

[0044] Step 1. Preparation of hydrogel

[0045] Add 1.55g of cellulose (3wt.%) into the above three-necked flask, and mechanically stir at 85°C until the cellulose is completely dissolved, and the system becomes a transparent viscous liquid for about 1.5 hours.

[0046] Put the transparent viscous liquid evenly on the polished silicon wafer carrier by the method of spin coating, and put it in the vacuum drying phase with a temperature of 85 ° C and a vacuum degree of 0.01 MPa for about 12 hours, and finally obtain a uniform and transparent [Bmim] Cl / cellulose system.

[0047] Then it was placed in distilled water at 30°C, and after the water molecules completely replaced the [Bmim]Cl ionic liquid (about 60 minutes), a uniform transparent hydrogel was formed.

[0048] Step 2. Loading PEDOT:PSS / AgNWs on the surface of the hydrogel

[0049] A hydrogel with a diameter of 4.2 cm is used as a filter, which is placed on a sand core filter device. PEDOT:PSS (2.4 mg) and AgNWs (1.2 ...

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Abstract

A method for preparing a regenerated cellulose conductive film with flexible conductivity and stable conductivity, relates to a method for preparing a conductive film, including the following preparation process: preparing hydrogel: adding cellulose to the above three-necked flask, and mechanically stirring at 85°C Until the cellulose is completely dissolved, the system becomes a transparent viscous liquid; load PEDOT:PSS / AgNWs on the surface of the hydrogel; dry to form a film: remove the hydrogel after suction filtration and sandwich two PTFE 0.1μm A vertical force of about 50 N was loaded between the porous membranes, and they were placed in a blast drying oven at 60°C to obtain a regenerated cellulose membrane with stable electrical conductivity. The prepared CRC film has higher conductivity. Good performance and long-term stability even in high humidity environments. They are particularly promising for use in next-generation electronics, optoelectronics, energy storage, soft robotics, and sensor devices.

Description

technical field [0001] The invention relates to a method for preparing a conductive film, in particular to a method for preparing a flexible and stable regenerated cellulose conductive film. Background technique [0002] The conductive film is a thin film with conductive function. The charge carriers of the conductive film are scattered by the surface and interface during the transport process. When the thickness of the film can be compared with the free path of electrons, the influence on the surface and interface will become significant. This phenomenon is called thin film size effect. It is equivalent to a reduction in the free path of the charge carriers, and thus the conductivity of the thin film is less compared to the bulk of the same material. [0003] Flexible conductive films are one of the key components of various flexible electronic devices such as displays, organic thin film transistors, photovoltaic devices, and electronic housings. In recent years, indium ...

Claims

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Application Information

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IPC IPC(8): C08L1/02C08L65/00C08L25/18C08K7/06C08J5/18H01G11/68G01B7/16
CPCC08J5/18C08J2301/02C08J2425/18C08J2465/00C08K7/06C08K2201/011G01B7/16H01G11/68Y02E60/13
Inventor 赵大伟许光文周剑虹王栩逄博
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY