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A kind of polypyrrole in-situ intercalation graphite antistatic plastic and preparation method thereof

An antistatic plastic and in-situ intercalation technology, applied in the field of composite materials, can solve the problems of organic polymers being difficult to intercalate between graphite layers, poor mechanical ductility, and small graphite layer spacing, so as to improve interface bonding force and enhance electrical conductivity , evenly dispersed effect

Active Publication Date: 2021-05-25
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure polypyrrole is insoluble in commonly used organic solvents, has poor mechanical ductility, difficult processing, and low electrical conductivity, which limits its wide application.
[0005] Graphite is a highly conductive layered material, but due to its large chemical inertness and small spacing between graphite layers, it is difficult for organic polymers to intercalate between graphite layers.

Method used

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  • A kind of polypyrrole in-situ intercalation graphite antistatic plastic and preparation method thereof
  • A kind of polypyrrole in-situ intercalation graphite antistatic plastic and preparation method thereof
  • A kind of polypyrrole in-situ intercalation graphite antistatic plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A polypyrrole in-situ intercalation graphite antistatic plastic, comprising the following components in parts by weight:

[0043]

[0044] Wherein, described expanded graphite is prepared by the following method:

[0045] (a) After mixing 3 parts of conductive graphite and 1 part of sodium nitrate, add to 90 parts of concentrated sulfuric acid and soak for 20 minutes, then slowly add 6 parts of potassium permanganate within 5 minutes, and continue stirring for 50 minutes to obtain Reaction system A, the temperature of the whole step (a) is controlled at 0°C, wherein the conductive graphite is commercially available 300-mesh conductive graphite;

[0046] (b) Put the reaction system A in a water bath, control the temperature at 35°C, and stir for 30 minutes to obtain the mixed solution B;

[0047] (c) Pour the mixed solution B into the water bath reaction system, the water bath reaction system is equipped with concentrated sulfuric acid and water with a mass ratio of 1:...

Embodiment 2

[0059] A polypyrrole in-situ intercalation graphite antistatic plastic, comprising the following components in parts by weight:

[0060]

[0061] Wherein, described expanded graphite is prepared by the following method:

[0062] (a) After mixing 4 parts of conductive graphite and 2 parts of sodium nitrate, add them to soak in 85 parts of concentrated sulfuric acid, stir for 30 minutes, then slowly add 9 parts of potassium permanganate within 5 minutes, and continue stirring for 60 minutes to obtain Reaction system A, the temperature of the whole step (a) is controlled at 4°C, wherein the conductive graphite is commercially available 300-mesh conductive graphite;

[0063] (b) Put the reaction system A in a water bath, control the temperature at 40°C, and stir for 40 minutes to obtain the mixed solution B;

[0064] (c) Pour the mixed solution B into the water bath reaction system, the water bath reaction system is equipped with concentrated sulfuric acid and water with a mas...

Embodiment 3

[0069] A polypyrrole in-situ intercalation graphite antistatic plastic, comprising the following components in parts by weight:

[0070]

[0071] Wherein, described expanded graphite is prepared by the following method:

[0072] (a) After mixing 3 parts of conductive graphite and 1 part of sodium nitrate, add to 90 parts of concentrated sulfuric acid and soak for 20 minutes, then slowly add 6 parts of potassium permanganate within 5 minutes, and continue stirring for 50 minutes to obtain Reaction system A, the temperature of the whole step (a) is controlled at 0°C, wherein the conductive graphite is commercially available 300-mesh conductive graphite;

[0073] (b) Put the reaction system A in a water bath, control the temperature at 35°C, and stir for 30 minutes to obtain the mixed solution B;

[0074] (c) Pour the mixed solution B into the water bath reaction system, the water bath reaction system is equipped with concentrated sulfuric acid and water with a mass ratio of ...

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Abstract

The invention discloses a polypyrrole in-situ intercalated graphite antistatic plastic and a preparation method thereof. The plastic comprises the following components in parts by weight: 1-10 parts of expanded graphite, 1-5 parts of pyrrole, 0.5-3 Surfactant, 1-5 parts of dopant, 0.5-3 parts of ammonium persulfate, 70-95 parts of main plastic, 0.5-3 parts of compatibilizer. In the invention, the pyrrole monomer is inserted into the interlayer of the modified graphite through molecular force, and then ammonium persulfate is used to polymerize the pyrrole in the graphite layer to prepare the polypyrrole / graphite material. The preparation method of the invention not only enhances the electrical conductivity, but also disperses the polypyrrole uniformly in the graphite layer, which highlights excellent mechanical properties.

Description

technical field [0001] The invention belongs to the field of composite materials, in particular to a polypyrrole in-situ intercalated graphite antistatic plastic and a preparation method thereof. Background technique [0002] Static electricity is a common natural phenomenon in daily life. This kind of static electricity with high voltage, low battery, small current and short action time has a great negative impact on health. It will not only aggravate respiratory system and cardiovascular system diseases, but also cause skin diseases. Morbidity, in the petroleum and chemical industry, it is also easy to cause fires, explosions and other accidents due to static electricity. With the rapid development of the electronics industry, the integration of electronic circuit boards is getting higher and higher. The high density of electronic components on the motherboard, the compact wiring, and even the widespread use of surface mount components can easily lead to electrostatic dama...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L23/12C08L51/06C08L79/04C08K9/02C08K9/04C08K7/24
Inventor 徐常威刘博财梁杰聪
Owner GUANGZHOU UNIVERSITY