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Method for preparing polypyrole/attapulgite nano conductive composite material

A technology of attapulgite and nano-conduction, which is applied in the direction of non-metallic conductors and organic material conductors, which can solve the problems of long polymerization time, large monomer feeding amount, and large energy consumption, and achieve simple and fast synthesis process with low dosage The effect of less, excellent electrical conductivity

Inactive Publication Date: 2010-12-08
常州佑佳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing polypyrrole / attapulgite nano-conductive composite material by rapid chemical oxidation polymerization. Long, large amount of monomer feed, high energy consumption and long time consumption of pre-treatment and post-treatment, etc.

Method used

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preparation example Construction

[0019] The preparation method of the present invention is: first add attapulgite to deionized water to prepare attapulgite slurry, the mass ratio of water to attapulgite is 4-19:1; add pyrrole monomer and dopant to the In the attapulgite slurry, and stir evenly, the mass ratio of pyrrole to attapulgite is 0.1-0.5:1, and the molar ratio of dopant to pyrrole is 0.15-1.05:1. The dopant is one or two of sodium benzenesulfonate, sodium p-toluenesulfonate, 2-naphthalenesulfonic acid, sodium dodecylbenzenesulfonate and sodium dodecylsulfonate. Then add ferric chloride oxidant to the obtained mixed slurry, the molar ratio of ferric chloride oxidant to pyrrole is 1-5:1, chemical oxidation polymerization at 10-60°C for 10-30min. Finally, the solid-liquid separation is carried out and the filtrate is washed with deionized water until the filtrate is colorless; the obtained filter cake is dried at 60-150° C. and pulverized to obtain polypyrrole / attapulgite nano-conductive powder.

[0020...

Embodiment 1

[0025] Add 5 g of attapulgite to 20 g of deionized water to prepare attapulgite slurry, add the prepared slurry into a three-necked flask, and then add 1 g (0.0149 mol) of pyrrole monomer and 0.7 g (0.0026 mol) of dodecyl Sodium alkyl sulfonate, stir evenly, then dissolve 12.1g (0.0448mol) ferric chloride in 50ml deionized water, quickly add to the above slurry to initiate polymerization, mechanically stir the polymerization at 10°C for 30min, suction filter, and use Wash with deionized water until the filtrate is colorless, dry the filter cake in an oven at 60°C, and grind to obtain a black polypyrrole / attapulgite nano-conductive powder. The measured volume resistivity is 28Ω·cm.

Embodiment 2

[0027] Add 5 g of attapulgite to 45 g of deionized water to prepare attapulgite slurry, add the prepared slurry into a three-necked flask, and then add 2.5 g (0.0373 mol) of pyrrole monomer and 3.8 g (0.0211 mol) of benzene Sodium sulfonate, stir evenly, then dissolve 12.1g (0.0448mol) ferric trichloride in 55ml deionized water, quickly add to the above slurry to initiate polymerization, mechanically stir the polymerization at 20°C for 20min, suction filter, and use deionized Wash with water until the filtrate is colorless, dry the resulting filter cake in an oven at 80°C, and grind to obtain a black polypyrrole / attapulgite nano-conductive powder. The measured volume resistivity is 15Ω·cm.

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Abstract

The invention discloses a method for preparing electrically conductive polypyrrole / attapulgite nano composite material. The method comprises the following steps: firstly, attapulgite is added into deionized water to prepare attapulgite slurry, wherein the mass ratio of the water to the attapulgite is 4-19 to 1; secondly, a pyrrole monomer and a dopant are added into the attapulgite slurry respectively and uniformly stirred, wherein the mass ratio of the pyrrole to the attapulgite is 0.1-0.5 to 1, and the mol ratio of the dopant to the pyrrole is 0.15-1.05 to 1; thirdly, an oxidant is added into mixed slurry which is then subjected to chemical oxidative polymerization for 10 to 30 minutes at a temperature of between 10 and 60 DEG C, wherein the mol ratio of the oxidant to the pyrrole is 1-5 to 1; and fourthly, the mixed slurry is subjected to solid-liquid separation and washed by the deionized water until filtrate is colorless, and a filter cake is dried and crushed at a temperature ofbetween 60 and 150 DEG C to obtain electrically conductive polypyrrole / attapulgite nano powder. The electrically conductive polypyrrole / attapulgite nano composite material is prepared by coating electrically conductive macromolecular polypyrrole on the surface of a one-dimensional attapulgite monocrystal in the shape of a nano rod by means of quick chemical oxidation and in-situ polymerization, does not require special pre-treatment, and has simple and quick synthesis technology and superior electrical conductivity and thermal stability.

Description

technical field [0001] The invention belongs to the technical field of preparation of nano conductive composite materials, in particular to a method for preparing polypyrrole / attapulgite nano conductive composite materials through chemical oxidation polymerization. Background technique [0002] Polypyrrole (PPy) is a new type of polymer with a conjugated π bond structure. It has the advantages of simple synthesis method, good electrochemical redox stability, good electrical conductivity, easy doping, and non-toxicity. It has become the most promising conductive polymer It is widely used in polymer batteries, electrolytic capacitors, conductive polymer composites and photoelectrochemical cells. However, polypyrrole has disadvantages such as poor solubility in common organic solvents, poor mechanical ductility, and difficult processing, which limits its popularization and application. Due to the size effect, quantum effect and unique physical and chemical properties of inorga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/04H01B1/12C08G73/06C08K3/34
Inventor 姚超王文娟陈志刚李为民高国生罗士平
Owner 常州佑佳新材料科技有限公司