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Nano composite of polypyrrole/organic montmori and its preparation process and application

A nano-composite material, organic montmorillonite technology, applied in the application of the nano-composite material, conductive polypyrrole/organic montmorillonite nano-composite material, the preparation field of the nano-composite material, can solve the coating adhesion , impact resistance, bending resistance and other physical and mechanical properties have a great influence, the antistatic effect has a great influence on dry and humidity, and the polymer structure varies greatly, so as to achieve the effects of low price, good application and promotion prospects, and simple equipment and process.

Inactive Publication Date: 2005-03-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the usual conductive fillers are inorganic substances, which have a large difference in structure from polymers and poor compatibility with resins, complex surface treatment is required, and the addition ratio is large. The adhesion to the coating, impact resistance, and Physical and mechanical properties such as bending have a greater impact
Most of the antistatic agents are low-molecular organic compounds, which have low electrical conductivity, and there are also disadvantages such as easy migration out of the polymer surface and consumption, antistatic effect is greatly affected by the dry humidity of the environment, and poor thermal stability.

Method used

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  • Nano composite of polypyrrole/organic montmori and its preparation process and application
  • Nano composite of polypyrrole/organic montmori and its preparation process and application
  • Nano composite of polypyrrole/organic montmori and its preparation process and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1 Preparation of organomontmorillonite

[0057] First, add 10.0g of sodium montmorillonite to 300ml of water, stir and heat up to 80°C to form a water dispersion, then add 100ml of polyvinylpyrrolidone (K30, Shanghai Boao Biotechnology Co., Ltd.) The aqueous solution of the sodium montmorillonite was slowly added to the aqueous dispersion of sodium montmorillonite, and stirred at 80°C for 12h. Let stand to cool to room temperature, discharge the material, centrifuge and wash to remove impurities 3-5 times, then vacuum-dry at 80°C to constant weight, then grind and refine to obtain polyvinylpyrrolidone-modified organic montmorillonite in the form of white powder .

[0058] figure 1 They are sodium montmorillonite (MMT), cetyltrimethylammonium chloride modified montmorillonite (CMMT), cetyltrimethylammonium bromide modified montmorillonite (BMMT) and this X-ray diffraction spectrum of the invented organic montmorillonite (PMMT). In the figure, (a) MMT, (b) ...

Embodiment 2

[0068] The preparation method and reaction condition of organic montmorillonite of the present invention, polypyrrole / organic montmorillonite nanocomposite material are as embodiment 1, adopt the mol ratio of different iron trichloride and pyrrole monomer, gained nanocomposite electrical conductivity As shown in Table 1. It can be seen that too little or too much ferric chloride has an adverse effect on the conductivity of the nanocomposite material. In combination with Example 1, the optimum molar ratio of ferric chloride to pyrrole is about 2.48.

[0069] Ferric chloride and

Embodiment 3

[0071] The preparation method and reaction condition of organic montmorillonite of the present invention, polypyrrole / organic montmorillonite nanocomposite material are as embodiment 1, adopt the mass ratio of different pyrrole (Py) and organic montmorillonite, gained nanocomposite material conductivity The rates are shown in Table 2. It can be seen that with the increase of the amount of pyrrole monomer, the electrical conductivity of the composite material increases. In combination with the results of Example 1, it can be known that the electrical conductivity of the composite material can be controlled at 10% by adjusting the amount of pyrrole monomer. -10 S cm -1 -15.30S·cm -1 between.

[0072] pyrrole and organic

quality of montmorillonite

volume ratio

0.00

0.02

0.05

0.10

0.15

0.20

Conductivity

(S cm -1 )

2.86×10 -10

2.15×10 -9

1.31...

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Abstract

The invention relates to a polypyrrole / organic montmorillonite nano-composite, using polypyrrolidone to make organic intercalation modification on sodium-base montmorillonite, then using water as medium, and on the condition of blending agent, using oxidant to make chemical polymerization reaction on the pyrrole monomers between organic modified montmorillonite interlayers so as to obtain it. It can use as conductive additive of polyamide curing epoxy resin emulsion to make water-borne epoxy-series antistatic coating, sealant, adhesive, etc.

Description

technical field [0001] The invention relates to the field of organic / inorganic nano composite materials, in particular to conductive polypyrrole / organic montmorillonite nano composite materials. [0002] The invention also relates to a method for preparing said nanocomposite material. [0003] The invention also relates to the use of said nanocomposite material. Background technique [0004] Conductive polymers are usually insoluble and infusible, which greatly limits the processing and wide application of conductive polymers. Therefore, since the late 1980s, improving the processability of conductive polymers to further realize the industrial application of conductive polymer materials has become an important research and development direction of conductive polymers. Although it is only in recent years that the concept of nanometers has been introduced into the research of conductive polymer materials, conductive polymer nanocomposites have good...

Claims

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Application Information

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IPC IPC(8): C08K3/34C08L39/06
Inventor 曾幸荣许均苏海霞
Owner SOUTH CHINA UNIV OF TECH
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