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A kind of conductive agent prepared by polyacrylonitrile gel and preparation method thereof

A polyacrylonitrile gel, polyacrylonitrile technology, applied in circuits, electrical components, carbon-silicon compound conductors, etc., can solve the problems that the performance cannot reach the ideal performance, the limited specific surface area is difficult to fully exert, and the particle size is large.

Active Publication Date: 2021-04-23
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrical properties of this material are closely related to the preparation process. The current conventional preparation process is to carbonize solid polyacrylonitrile powder or fibers. Although this method is simple, the particle size is larger than 5 μm, and the specific surface area is limited. Performance is difficult to fully exert
However, in this process, the performance of the obtained materials still cannot achieve the ideal performance, and it is necessary to guide and control from the source of the raw materials

Method used

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  • A kind of conductive agent prepared by polyacrylonitrile gel and preparation method thereof
  • A kind of conductive agent prepared by polyacrylonitrile gel and preparation method thereof
  • A kind of conductive agent prepared by polyacrylonitrile gel and preparation method thereof

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Effect test

Embodiment 1

[0028] A kind of preparation method of described conductive agent prepared with polyacrylonitrile gel, comprises the following steps:

[0029] Step 1, soak polyacrylonitrile fiber in N'N-dimethylformamide, the quality of N'N-dimethylformamide is 40 times that of polyacrylonitrile fiber, and then place it in an oven at 75°C Insulated for 25 minutes to obtain a polyacrylonitrile solution;

[0030] The 2nd step, polyacrylonitrile solution is slowly added dropwise to deionized water, the consumption of deionized water is 3 times of polyacrylonitrile solution volume, adds admixture iron phthalocyanine (M is Fe in the aforementioned structural formula), admixture and The mass of polyacrylonitrile is 1:100, stirring while adding dropwise, the stirring rate is 1000-1500r / min, and then centrifuged to obtain polyacrylonitrile gel;

[0031] In the third step, the polyacrylonitrile gel is placed in a vacuum cracking furnace, and the temperature is raised to 100°C for 30 minutes to dehydr...

Embodiment 2

[0034] A kind of preparation method of described conductive agent prepared with polyacrylonitrile gel, comprises the following steps:

[0035] Step 1, soak polyacrylonitrile fiber in N'N-dimethylformamide, the quality of N'N-dimethylformamide is 50 times that of polyacrylonitrile fiber, and then place it in an oven at 80°C Insulated for 20 minutes to obtain a polyacrylonitrile solution;

[0036] The 2nd step, polyacrylonitrile solution is slowly added dropwise to deionized water, the consumption of deionized water is 4 times of polyacrylonitrile solution volume, adds admixture cobalt phthalocyanine (M is Co in the aforementioned structural formula), admixture and The mass ratio of polyacrylonitrile is 1:100, stirring while adding dropwise, the stirring rate is 1000-1500r / min, and then centrifuged to obtain polyacrylonitrile gel;

[0037] Step 3: Place the polyacrylonitrile gel in a vacuum cracking furnace, raise the temperature to 120°C and keep it for 20 minutes to dehydrate...

Embodiment 3

[0040] A kind of preparation method of described conductive agent prepared with polyacrylonitrile gel, comprises the following steps:

[0041] Step 1: Soak polyacrylonitrile fiber in N'N-dimethylformamide, the quality of N'N-dimethylformamide is 45 times that of polyacrylonitrile fiber, and then place it in an oven at 85°C Insulated for 15 minutes to obtain a polyacrylonitrile solution;

[0042] The 2nd step, polyacrylonitrile solution is slowly added dropwise to deionized water, and the consumption of deionized water is 4 times of polyacrylonitrile solution volume, adds admixture nickel phthalocyanine (M is Ni in the aforementioned structural formula), admixture and The mass ratio of polyacrylonitrile is 1:100, stirring while adding dropwise, the stirring rate is 1000-1500r / min, and then centrifuged to obtain polyacrylonitrile gel;

[0043] Step 3: Place the polyacrylonitrile gel in a vacuum cracking furnace, raise the temperature to 110°C and keep it for 25 minutes to dehyd...

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Abstract

The invention discloses a conductive agent prepared from polyacrylonitrile gel and a preparation method thereof. The polyacrylonitrile gel is obtained by first dissolving polyacrylonitrile fibers in N'N-dimethylformamide, and then Drop into deionized water, add additives, and obtain polyacrylonitrile gel through precipitation polymerization; then place the obtained gel in a vacuum cracking furnace, adjust different heat treatment parameters to carbonize the gel, so as to obtain different conductivity agent. The conductive agent prepared by polyacrylonitrile gel given in this patent has a particle size controlled below 1 μm and an electrical conductivity exceeding 100 S / cm, up to 131 S / cm.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a conductive agent prepared from polyacrylonitrile gel and a preparation method thereof. Background technique [0002] In recent years, scholars have been interested in the research of conductive polymers, and many conductive polymer products with practical value have been developed. At present, the research trend of conductive polymers is towards the goal of high conductivity, good stability, and low density suitable for processing. The problem is that the conductivity is small, the charge is not high, and it cannot meet the requirements as a capacitor material. [0003] From the market point of view, the main conductive agents are conductive carbon black, conductive graphite, carbon nanotubes, carbon fibers and so on. The particle size of conductive carbon black is small, which can be applied in many industries such as batteries, conductive adhesives, conductive p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/04H01B13/00D06M13/402D06M101/28
CPCD06M13/402D06M2101/28H01B1/04H01B13/00
Inventor 高延敏徐俊烽施方长张政王明明孙存思杨红洲
Owner JIANGSU UNIV OF SCI & TECH