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Preparation method of one-dimensional conductive polypyrrole/ concave-convex rod nanameter composite material

A technology of nano-composite materials and attapulgite, which is applied in the direction of non-metallic conductors and organic material conductors, can solve the problems of difficult dispersion of reaction raw materials and reagents, poor performance of composite materials, particle agglomeration, etc., and achieve uniform and controllable size, production Low-cost, easy-to-operate effect

Active Publication Date: 2012-07-04
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disclosed technical scheme of this patent has following defects: one, the mass ratio of water and attapulgite is 4~19: 1, and the consumption of attapulgite is bigger and makes the viscosity of slurry very high, so that reaction raw material and reagent are in slurry Difficult to disperse in the material; 2. The polypyrrole / attapulgite conductive composite material obtained by polymerization has higher resistivity, lower electrical conductivity, serious particle agglomeration, and poor performance of the composite material
[0007] Although the Chinese patent with the authorized announcement number CN 101418122B and the Chinese patent application with the publication number CN101838392A have proposed to use the attapulgite as the core to prepare the attapulgite / polypyrrole composite material, but the nano attapulgite and the long-chain molecular soft template together, through The combination of hard and soft templates to prepare one-dimensional conductive polypyrrole / attapulgite nanocomposites has not been reported

Method used

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  • Preparation method of one-dimensional conductive polypyrrole/ concave-convex rod nanameter composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Stir nano-attapulgite powder (attapulgite particles with a diameter of 20nm to 100nm and a length of 0.3μm to 3μm) and deionized water at a rate of 1000 rpm to make attapulgite powder. 3% suspension;

[0031]2) Under the condition of constant stirring, add pyrrole to the suspension in step 1), the weight ratio of the amount of pyrrole added to the nano-attapulgite powder is 10:1, and then add hexadecyl trimethazine to the suspension Ammonium bromide and camphorsulfonic acid, the mol ratio of cetyltrimethylammonium bromide and pyrrole is 1: 1, and the mol ratio of camphorsulfonic acid and pyrrole is 1: 1, obtains mixed solution;

[0032] 3) Slowly drip an aqueous ammonium persulfate solution with a concentration of 2 mol / L into the mixed solution in step 2), the molar ratio of ammonium persulfate to pyrrole is 1:1, the duration of dripping is 0.5 hours, and oxidize at 5°C Polymerize for 5 hours, filter after the polymerization reaction, wash with water twice, and vac...

Embodiment 2

[0035] 1) Stir nano-attapulgite powder (attapulgite particles with a diameter of 20nm to 100nm and a length of 0.3μm to 3μm) and deionized water at a rate of 1000 rpm to make attapulgite powder. 0.2% suspension;

[0036] 2) Under the condition of constant stirring, add pyrrole to the suspension in step 1), the weight ratio of the amount of pyrrole added to the nano-attapulgite powder is 20:1, and then add dodecyl trimethazine to the suspension Ammonium bromide and dodecylbenzenesulfonic acid, the mol ratio of dodecyltrimethylammonium bromide and pyrrole is 2: 1, the mol ratio of dodecylbenzenesulfonic acid and pyrrole is 2: 1, get mixed solution;

[0037] 3) Slowly drip an aqueous ammonium persulfate solution with a concentration of 0.2 mol / L into the mixed solution in step 2), the molar ratio of ammonium persulfate to pyrrole is 2:1, and the duration of the dripping is 1 hour. After oxidative polymerization for 3 hours, after the polymerization reaction, it was filtered, wa...

Embodiment 3

[0040] 1) Stir nano-attapulgite powder (attapulgite particles with a diameter of 20nm to 100nm and a length of 0.3μm to 3μm) and deionized water at a rate of 1000 rpm to make attapulgite powder. Suspension with a content of 4.9%;

[0041] 2) Under the condition of constant stirring, add pyrrole to the suspension in step 1), the weight ratio of the amount of pyrrole added to the nano-attapulgite powder is 5: 1, then add methyl orange and twelve Sodium alkylsulfonate, the molar ratio of methyl orange and pyrrole is 0.2:1, and the molar ratio of sodium dodecylsulfonate and pyrrole is 0.5:1 to obtain a mixed solution;

[0042] 3) Slowly drip into the mixed solution in step 2) a concentration of 1mol / L ferric chloride aqueous solution, the molar ratio of ferric chloride to pyrrole is 0.8:1, the duration of dripping is 0.5 hours, at 0 ℃ oxidative polymerization for 24 hours, filtered after the polymerization reaction, washed 4 times with water, and vacuum dried at 90 ℃ for 5 hours ...

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Abstract

The invention discloses a preparation method of a one-dimensional conductive polypyrrole / concave-convex rod nanameter composite material, which includes the following steps: evenly mixing nanometer concave-convex rod powder and water to prepare suspension liquid with weight percentage composition of concave-convex rod powder as 0.2% to 4.9%, adding pyrrole into the suspension liquid under stirring condition, adding long-chain molecule surfactant and doping agent in the suspension liquid to obtain mixed liquid, adding oxidant in the mixing liquid, conducting oxidation polymerization for 3 hours to 24 hours under 0 to 50 DEG C, and conducting filtering, washing and drying to obtain the one-dimensional conductive polypyrrole / concave-convex rod nanameter composite material. The preparation method utilizes a one-dimension nanometer material concave-convex rod as a hard template and the long-chain molecule surfactant as a soft template, the one-dimensional conductive polypyrrole / concave-convex rod nanameter composite material is prepared in the combination method of the hard template and the soft template, and the prepared one-dimensional conductive polypyrrole / concave-convex rod nanameter composite material is controllable in size and has good conductivity.

Description

technical field [0001] The invention relates to the field of preparation of conductive composite materials, in particular to a preparation method of a one-dimensional conductive polypyrrole / attapulgite nanocomposite material. Background technique [0002] The structural diversity of polypyrrole, doped and undoped polypyrrole has the advantages of good environmental stability, easy synthesis, excellent physical properties, cheap and easy to obtain monomers, especially its unique proton acid doping mechanism and Excellent electrical conductivity, is considered to be one of the most promising conductive polymers. Among them, one-dimensional conductive polypyrrole nanomaterials are widely used in lithium-ion batteries, supercapacitors, gas sensors, composite conductive fibers and electrochromic materials due to their high energy density, low-dimensional structure, high specific surface area, good conductivity and stability. The field has broad application prospects. [0003] S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06C08K3/34C08K5/43C08K3/16C08K5/092C08L79/04H01B1/12
Inventor 刘丰华许高杰周石郭建军程昱川
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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