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Preparation method of polypyrrole/organically modified attapulgite conductive composite material

A technology for modifying attapulgite and conductive composite materials, which is applied in the field of preparation of conductive composite materials, and can solve the problems of high resistivity, low conductivity, and large amount of attapulgite for nano-conductive composite materials, and achieve conductivity stability Good, improved conductivity, short synthesis time

Active Publication Date: 2017-07-07
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] (1) The mass ratio of water to attapulgite is 4-19︰1, the concentration of the slurry is high, and the amount of attapulgite is large; (2) The resistivity of the polypyrrole / attapulgite nano-conductive composite material obtained by polymerization larger, less conductive

Method used

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  • Preparation method of polypyrrole/organically modified attapulgite conductive composite material
  • Preparation method of polypyrrole/organically modified attapulgite conductive composite material
  • Preparation method of polypyrrole/organically modified attapulgite conductive composite material

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preparation example Construction

[0016] The present invention is the preparation method of polypyrrole / organic modified attapulgite conductive composite material, and its steps are:

[0017] (1) Mix attapulgite, organic modifier and water, the mass ratio of organic modifier to attapulgite is 0.02-0.05:1, and stir to react;

[0018] (2) Suction filtration to dry the filter cake, and obtain organically modified attapulgite after crushing;

[0019] (3) Mix organically modified attapulgite and water under stirring, the mass ratio of organically modified attapulgite to water is: 0.9~5:100, fully impregnated to make a slurry;

[0020] (4) Add the dopant sulfamic acid, pyrrole monomer, ferric chloride as the oxidant, and the mixture of the above-mentioned attapulgite slurry respectively, and react for 15 minutes at 10-30°C under the protection of nitrogen, and organic modification The mass ratio of attapulgite to pyrrole monomer is: 0.4~2:1, the molar ratio of sulfamic acid to pyrrole monomer is: 0.8:1, and the mol...

Embodiment 1

[0028] First, add 0.08g of cetylpyridine chloride into 100mL of water and stir to dissolve it completely; add 4g of attapulgite to the above solution again, and stir for 4 hours; finally, vacuum-dry the filter cake at 40°C and grind it to obtain Organic modified attapulgite. 0.6191g of the prepared organically modified attapulgite and 50g of water were mixed under stirring, fully impregnated to make a slurry; secondly, 0.0149moL ferric chloride was added to the mixture containing 0.0154moL pyrrole monomer and 0.0084moL sulfamic acid, And in the mixed solution of the above attapulgite slurry, under the protection of nitrogen, react at room temperature for 0.5 hours; again, filter and wash the reaction solution until the filtrate is neutral; finally, vacuum-dry the filter cake at 40°C, and pulverize to obtain black Polypyrrole / organically modified attapulgite conductive powder, the conductivity measured by pressing the tablet is 50.00S•cm-1.

Embodiment 2

[0030] First, add 0.12g of cetylpyridine chloride into 100mL of water and stir to dissolve it completely; add 4g of attapulgite to the above solution again, stir and react for 4h; finally, vacuum-dry the filter cake at 40°C and grind it to obtain Organic modified attapulgite. 0.6191g of the prepared organically modified attapulgite and 50g of water were mixed under stirring, fully impregnated to make a slurry; secondly, 0.0149moL ferric chloride was added to the mixture containing 0.0154moL pyrrole monomer and 0.0084moL sulfamic acid, And in the mixed solution of the above attapulgite slurry, under the protection of nitrogen, react at room temperature for 0.5 hours; again, filter and wash the reaction solution until the filtrate is neutral; finally, vacuum-dry the filter cake at 40°C, and pulverize to obtain black Polypyrrole / organically modified attapulgite conductive powder, the conductivity measured by tableting is 75.18S•cm-1.

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Abstract

The preparation method of polypyrrole / organic modified attapulgite conductive composite material, first mix a certain amount of attapulgite, a certain amount of organic modifier and a certain amount of water, stir and react for a certain period of time, and then filter the filter cake Drying, crushing to obtain organically modified attapulgite; then mixing a certain amount of organically modified attapulgite with a certain amount of water, and then adding dopant sulfamic acid and pyrrole monomer respectively, and stirring the mixture evenly , add the oxidant ferric chloride, react for a certain period of time and then add a certain amount of HCl solution for secondary doping, then filter the reaction solution and wash until the filtrate is neutral; finally dry the filter cake and pulverize it to obtain polypyrrole / concave-convex Stick clay black conductive powder.

Description

technical field [0001] The invention relates to a preparation method of a conductive composite material. Background technique [0002] Conductive polymers are a new research field developed in the 1970s. Because of their unique properties, they are widely used in electrochemistry, electrode materials, optics, biotechnology, and conductive materials. Among many conductive polymers, polypyrrole exhibits good conductivity, environmental stability, photoelectricity, pyroelectricity, adjustable conductivity, easy preparation and doping due to its typical rigid conjugated large π bond structure. , can be conveniently deposited on various substrates, can be copolymerized and compounded with other functional materials, can be used at room temperature or low temperature, etc., and is widely used in sensors, electronic devices, biomedicine and other fields. Polypyrrole has the advantages of good electrical conductivity, good chemical stability, light stability and easy preparation. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06C08K13/06C08K9/04C08K3/34C08K3/16
Inventor 冯辉霞王滨谭琳
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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