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Nano conductive paper, preparation method of nano conductive paper and capacitor

A nano-conductive and conductive material technology, applied in fixed capacitor electrodes, nanotechnology, nanotechnology, etc., can solve the problems of limited application of paper-based flexible conductive materials, poor mechanical properties, opacity, etc., to achieve good conductivity and low Young's. Modulus, high transparency effect

Inactive Publication Date: 2019-01-08
SHENZHEN YUTO PACKAGING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some shortcomings of traditional paper, such as micron-level surface roughness, almost opaque, poor mechanical properties, etc., limit the application of paper-based flexible conductive materials in capacitors.

Method used

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  • Nano conductive paper, preparation method of nano conductive paper and capacitor
  • Nano conductive paper, preparation method of nano conductive paper and capacitor
  • Nano conductive paper, preparation method of nano conductive paper and capacitor

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preparation example Construction

[0038] The invention provides a preparation method of nano conductive paper, comprising:

[0039] Mix the nano cellulose and the conductive material evenly and then vacuum filter to obtain the nano conductive film;

[0040] The nano conductive film is soaked in the mixed aqueous solution of choline chloride and urea, and then taken out and dried.

[0041] Preferably, the nanocellulose is obtained by oxidizing and homogenizing hardwood pulp, eucalyptus pulp or softwood pulp through a TEMPO / NaBr / NaClO system.

[0042]It should be noted that TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical) is a water-soluble piperidine-like nitroxide radical. The TEMPO / NaBr / NaClO system is a new type of selective oxidation system, TEMPO and NaBr are used as catalysts, and NaClO is used as an oxidant. The TEMPO / NaBr / NaClO system can effectively introduce aldehyde groups and carboxyl groups to the cellulose surface in a liquid phase environment with a pH of 10-11, and oxidize the C6 hydroxyl ...

Embodiment 1

[0061] (1) Preparation of transparent substrate nanocellulose: soak the hardwood pulp board in deionized water and then stir the obtained slurry through TEMPO / NaBr / NaClO system for oxidation treatment, and then homogenize to obtain nanocellulose .

[0062] (2) Preparation of a conductive mixture: the nanocellulose prepared in step (1) was mixed with the nanosilver wire at a mass ratio of 100:0.5, and ultrasonically oscillated for 30 minutes to mix them uniformly to obtain a conductive mixture.

[0063] (3) Preparation of nano-conductive film: take the conductive mixture prepared in step (2), and vacuum filter to obtain the nano-conductive film.

[0064] (4) Preparation of nano-conductive paper: Take the nano-conductive film prepared in step (3) and immerse it in the choline chloride / urea aqueous solution. After soaking for 12 hours, take it out and clamp it with a glass plate and place it in an oven at 80°C for 3 hours to obtain the nano-conductive film. Conductive paper; whe...

Embodiment 2

[0066] (1) Preparation of transparent substrate nanocellulose: soak the hardwood pulp board in deionized water and then stir the obtained slurry through TEMPO / NaBr / NaClO system for oxidation treatment, and then homogenize to obtain nanocellulose .

[0067] (2) Preparation of a conductive mixture: the nanocellulose prepared in step (1) was mixed with the nanosilver wire at a mass ratio of 100:1, and ultrasonically oscillated for 30 minutes to mix them evenly to obtain a conductive mixture.

[0068] (3) Preparation of nano-conductive film: take the conductive mixture prepared in step (2), and vacuum filter to obtain the nano-conductive film.

[0069] (4) Preparation of nano-conductive paper: take the nano-conductive film prepared in step (3) and immerse it in the choline chloride / urea aqueous solution, after soaking for 12 hours, take it out and clamp it with a glass plate and place it in an oven at 90°C to dry for 2.5 hours to obtain Nano conductive paper; wherein, in the mixe...

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Abstract

The invention discloses nano conductive paper, a preparation method of the nano conductive paper and a capacitor. The preparation method of the nano conductive paper comprises the steps as follows: uniformly mixing nano cellulose and a conductive material, and performing vacuum suction filtration to obtain a nano conductive film; placing the nano conductive film in a mixed water solution of choline chloride and urea to be soaked, and then, taking out and drying the nano conductive film. According to the nano conductive paper, the nano cellulose and the conductive material are uniformly mixed,the nano conductive film is firstly obtained through vacuum suction filtration, then, the nano conductive film is placed in the mixed water solution of choline chloride and urea to be soaked, and thenano conductive paper is obtained after drying. The nano conductive paper has higher transparency, higher tensile strength, lower Yang's modulus and better conductivity, and the capacitor constructedby the nano conductive paper as a key component has good stability.

Description

technical field [0001] The invention relates to the field of flexible conductive materials, in particular to a nano conductive paper, a preparation method thereof and a capacitor. Background technique [0002] In the face of the increasing energy consumption and urgent environmental protection in modern society, researchers are constantly exploring renewable and sustainable energy sources, such as solar cells, wind power and thermal power generation and other clean energy sources. Flexible electronic products and devices are used as the core of the information society. As an important part, it should also take a green and sustainable path. However, in recent years, with the widespread use of various electronic devices in flexible products such as packaging and wearable devices, the threat of waste (such as PET, etc.) to the environment and non-renewable energy cannot be ignored. Lightweight capacitors are important components in flexible electronic devices, so it is necessa...

Claims

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Application Information

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IPC IPC(8): D21H11/00D21H17/00D21H17/07D21H17/46H01B1/02H01B1/04H01B1/12B82Y30/00H01G4/005
CPCB82Y30/00D21H11/00D21H17/00D21H17/07D21H17/46H01B1/02H01B1/04H01B1/12H01G4/005
Inventor 陈广学张凯丽李仁爱何明辉陈琳轶俞朝晖
Owner SHENZHEN YUTO PACKAGING TECH
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