Preparation method of polyaniline/attapulgite conductive composite material

A technology of conductive composite material and attapulgite, which is applied in the field of preparation of conductive materials to achieve high conductivity, simple synthesis process, and good stability of conductivity

Inactive Publication Date: 2013-02-06
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Both of the above two patents make good use of the characteristics of ionic liquids as benign solvents, but there are few reports on the direct use of ionic liquids in material synthesis

Method used

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  • Preparation method of polyaniline/attapulgite conductive composite material
  • Preparation method of polyaniline/attapulgite conductive composite material
  • Preparation method of polyaniline/attapulgite conductive composite material

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preparation example Construction

[0013] The present invention is the preparation method of polyaniline / attapulgite clay conductive composite material, and its steps are:

[0014] (1) Dissolve ionic liquid, attapulgite clay, aniline monomer, and dopant sulfamic acid in HCl solution with a concentration of 1mol / l, and stir vigorously for 0.5 hours at 0~40°C, the mass of ionic liquid The ratio of g to the mole of aniline monomer is: 1 to 10:0.011, the molar ratio of attapulgite mass g to the mole of aniline monomer is: 0.3 to 5:0.011, and the molar ratio of sulfamic acid to aniline monomer is: 0.9~5:1, the mass ratio of attapulgite to aqueous solution is 1:50~200;

[0015] (2) Slowly drop the oxidant ammonium persulfate solution into the above mixture, the solution turns dark green, react at 0~40°C for 30 minutes to 4 hours, the molar ratio of ammonium persulfate to aniline monomer is: 0.4~ 1.2:1;

[0016] (3) The mixed solution was sequentially suction-filtered and washed with distilled water until the filtra...

Embodiment 1

[0020] Dissolve 2.50g of ionic liquid, 0.03g of attapulgite, 0.0103mol of sulfamic acid, and 0.0110mol of aniline monomer into 50ml of 1mol / l hydrochloric acid solution, stir vigorously at normal temperature and pressure for 30min, and then add 10ml of persulfuric acid containing 0.066mol Ammonium hydrochloric acid solution (the concentration of hydrochloric acid is 1mol / l), stirred and reacted for 2 hours; the reaction solution was filtered and washed until the filtrate was neutral; finally, the filter cake was vacuum-dried at 40°C, and the dark green conductive material of the composite material was obtained after crushing. The conductivity of powder and tablet is 1.5 S·cm -1 .

Embodiment 2

[0022] Dissolve 5.00g of ionic liquid, 0.03g of attapulgite, 0.0103mol of sulfamic acid, and 0.0110mol of aniline monomer into 50ml of 1mol / l hydrochloric acid solution, stir vigorously at normal temperature and pressure for 30min, and then add 10ml of persulfuric acid containing 0.066mol Ammonium hydrochloric acid solution (the concentration of hydrochloric acid is 1mol / l), stirred and reacted for 2 hours; the reaction solution was filtered and washed until the filtrate was neutral; finally, the filter cake was vacuum-dried at 40°C, and the dark green conductive material of the composite material was obtained after crushing. The conductivity of powder and tablet is 10.0 S·cm -1 .

[0023] like figure 1 As shown, the attapulgite coated with polyaniline particles overlaps the gap between the polyaniline groups like a bridge. The diameter of the rod crystal in the attapulgite is on the order of 0.01 μm, and the length can reach 0.1-1 μm. figure 1 The diameter of the rod crysta...

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Abstract

The invention provides a preparation method of a polyaniline/attapulgite conductive composite material. The preparation method comprises the following steps of: firstly mixing a certain amount of ionic liquid, a small amount of attapulgite, a certain amount of aniline monomer, a certain amount of dopant amino sulfonic acid and HCl solution with the concentration of 1 mol/l, and intensely agitating for 0.5h under the condition of 0-40 DEG C; then slowly dripping a certain amount of oxidant ammonium persulfate solution into the mixture to enable the solution to turn into dark green, and reacting for 30min-4h under the condition of 0-40 DEG C; and finally carrying out suction filtration on the mixed solution and washing with distilled water until filtrate is neutral in sequence, drying a filter cake in a vacuum drying oven at 40 DEG C, and grinding the filter cake to obtain polyaniline/attapulgite conductive composite material powder.

Description

technical field [0001] The invention relates to a method for preparing a conductive material. Background technique [0002] As one of the conductive polymer materials, polyaniline is considered to be the structural conductive polymer with the most commercial application value because of its good chemical stability, good weather resistance, cheap and easy-to-obtain raw materials, simple synthesis method, and electrical conductivity. There is a huge market demand in fields such as biosensors, anti-corrosion materials, and wave-absorbing materials. However, the low conductivity of polyaniline and the difficulty of post-processing have greatly affected its popularization and application. Therefore, it has become an effective way to improve its poor processing performance and increase electrical conductivity to a certain extent through composite modification technology, which can not only obtain functional composite materials, but also broaden its application fields. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K9/04C08K3/34
Inventor 冯辉霞陈姣陈娜丽邱建辉张建强王毅申永前
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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