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Method for preparing polymer/graphite nanometer composite material by utilizing ultrasonic dispersion technology

A nanocomposite material and polymer technology, applied in the field of polymer/modified graphite nanocomposite materials and their preparation, can solve problems such as uneven dispersion of graphite and reduced mechanical properties of materials, and achieve simplified preparation procedures, superior performance, and solutions the effect of reunion

Inactive Publication Date: 2006-07-19
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, due to the uneven dispersion of graphite, it is easy to form stress concentration, thereby reducing the mechanical properties of the material.

Method used

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  • Method for preparing polymer/graphite nanometer composite material by utilizing ultrasonic dispersion technology
  • Method for preparing polymer/graphite nanometer composite material by utilizing ultrasonic dispersion technology
  • Method for preparing polymer/graphite nanometer composite material by utilizing ultrasonic dispersion technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1, the preparation of polypyrrole / graphite flake nanocomposite material:

[0037] ① Dissolve expanded graphite in ethanol, ultrasonically pulverize for 10 hours under the condition of ultrasonic frequency of 80 Hz and temperature of 40 °C, filter and wash to obtain graphite nano-chips;

[0038] ② Dissolve the pyrrole monomer in ethanol, then add sodium lauryl sulfate 5 times the mass of the pyrrole monomer and graphite nano-chips 0.08 times the mass of the pyrrole monomer, stir evenly, and ultrasonically treat at room temperature for 10 minutes;

[0039] ③ Add ferric chloride hexahydrate 8 times the mass of pyrrole monomer and 0.5 times the hydrochloric acid dopant, make the mixed solution polymerize for 4 hours under the condition of -5 ~ 5 ℃ ice-water bath, then transfer to room temperature and stir for 12 hours , the product was filtered, the precipitate was repeatedly washed with secondary water and absolute ethanol, and the obtained solid was vacuum-drie...

Embodiment 2

[0040] Embodiment 2, the preparation of polypyrrole / graphite flake nanocomposite material:

[0041] ①Dissolve expanded graphite in chloroform, ultrasonically pulverize for 12 hours under the condition of ultrasonic frequency of 90Hz and temperature of 35°C, filter and wash to obtain graphite nano-chips;

[0042] ②Dissolve the pyrrole monomer in chloroform, then add sodium stearate with 4 times the weight of the pyrrole monomer and graphite nanoplatelets with 0.1 times the weight of the pyrrole monomer, stir evenly, and ultrasonically treat at room temperature for 20 minutes;

[0043] ③Add iron trichloride hexahydrate 9 times the mass of pyrrole monomer and 1.5 times the methanesulfonic acid dopant, make the mixed solution polymerize for 3 hours under the condition of ice-water bath at -5~5℃, then transfer to room temperature and stir After 15 hours, the product was filtered, the precipitate was repeatedly washed with secondary water and absolute ethanol, and the obtained solid...

Embodiment 3

[0044] Embodiment 3, the preparation of polypyrrole / graphite flake nanocomposite material:

[0045] ①Dissolve expanded graphite in ethanol, ultrasonically pulverize it for 12 hours under the condition of ultrasonic frequency of 100Hz and temperature of 35°C, filter and wash to obtain graphite nano-chips;

[0046] ②Dissolve the pyrrole monomer in ethanol, then add polyethylene coupling agent with 2 times the volume of the pyrrole monomer and graphite nano-chips with 0.15 times the mass of the pyrrole monomer, stir evenly, and ultrasonically treat at room temperature for 30 minutes;

[0047] ③ Add iron trichloride hexahydrate 10 times the mass of pyrrole monomer and 0.8 times the dopant of p-toluenesulfonic acid, and polymerize the mixed solution for 2 hours in an ice-water bath at -5 to 5°C, and then turn it to room temperature After stirring for 24 hours, the product was filtered, and the precipitate was repeatedly washed with secondary water and absolute ethanol, and the obta...

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Abstract

The provided preparation method for polymer / graphite composite material comprises: using supersonic crushing technique to break the interlayer bonding of expanded graphite as material and prepare the nano dispersive flake graphite; than, in-situ polymerizing the flake with polymer monomer to obtain the target with super conductivity and heat endurance and mechanical processing property. This invention has high production efficiency with low cost.

Description

technical field [0001] The invention relates to a polymer / graphite nanocomposite material, in particular to a polymer / modified graphite nanocomposite material and a preparation method thereof. Background technique [0002] The carbon in graphite is sp 2 Hybridization, with a layered structure formed by stacking carbon hexagonal conjugated planes, carbon and carbon in the layer are covalently bonded, the bond length is 0.142nm, and the binding energy is 345kJ / mol; while the interlayer distance is relatively large (0.335nm ), beyond the range of covalent bonds. It is generally believed that the interlayer force is mainly van der Waals force, and the binding force is 16.7kJ / mol. Therefore, many compounds can be inserted between graphite layers, and even locally react with electrons in the layers to form interlayer compounds. [0003] After high temperature treatment, the graphite intercalation compound decomposes rapidly, and the graphite carbon layer expands greatly along th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08K3/04
Inventor 莫尊理左丹丹陈红孙银霞刘艳芝张平
Owner NORTHWEST NORMAL UNIVERSITY
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