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Preparation method of sepiolite/polyaniline nanocomposite material

A technology of nanocomposite materials and sepiolite, which is applied in the field of preparation of sepiolite/polyaniline nanocomposite materials, can solve problems such as low specific surface area, low specific capacitance, and poor material performance, and achieve large specific surface area and high The effect of specific capacitance and structural integrity

Inactive Publication Date: 2014-08-13
SOUTHWEAT UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the preparation of inorganic / polyaniline nanocomposite conductive materials by compounding polyaniline and inorganic nanoparticles has become the focus of research. In the prior art, common inorganic / polyaniline nanocomposites include montmorillonite / polyaniline, dioxide Silicon / polyaniline, etc., but due to the low specific surface area of ​​silica, montmorillonite and other materials, the specific capacitance of the material is low, and the performance of the material is poor

Method used

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  • Preparation method of sepiolite/polyaniline nanocomposite material
  • Preparation method of sepiolite/polyaniline nanocomposite material
  • Preparation method of sepiolite/polyaniline nanocomposite material

Examples

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Effect test

Embodiment 1

[0036] A preparation method of sepiolite / polyaniline nanocomposite material, the preparation steps are as follows:

[0037] 1) Mix the sepiolite raw material and distilled water passing through the 80 mesh sieve in a weight ratio of 1:30, stir and mix vigorously for 6 hours, then let it stand for 24 hours, take the upper layer of sepiolite suspension, suction filter, wash with distilled water, and vacuum at 60°C Dry for 24h to obtain washed sepiolite;

[0038] 2) Mix the washed sepiolite passed through a 200-mesh sieve with a hydrochloric acid solution with a concentration of 3mol / L at a weight ratio of 1:20, then stir at 25°C for 16 hours, filter, wash with distilled water until neutral, and vacuum at 60°C Dry for 24 hours to obtain acid-activated sepiolite;

[0039] 3) Mix the acid-activated sepiolite passed through a 200-mesh sieve with absolute ethanol in a ratio of 1:20 by weight, add 3-aminopropyltriethoxysilane, 3-aminopropyltriethoxysilane and The weight ratio of aci...

Embodiment 2

[0043] A preparation method of sepiolite / polyaniline nanocomposite material, the preparation steps are as follows:

[0044] 1) Mix the sepiolite raw material passed through a 80-mesh sieve with distilled water at a weight ratio of 1:40, stir and mix vigorously for 3 hours, then let it stand for 16 hours, take the upper layer of sepiolite suspension, suction filter, wash with distilled water, and vacuum at 60°C Dry for 24h to obtain washed sepiolite;

[0045] 2) Mix the washed sepiolite passed through a 200-mesh sieve with an aqueous hydrochloric acid solution with a concentration of 1mol / L at a weight ratio of 1:10, then stir at 40°C for 24 hours, filter, wash with distilled water until neutral, and vacuum at 60°C Dry for 24 hours to obtain acid-activated sepiolite;

[0046] 3) Mix the acid-activated sepiolite passed through a 200-mesh sieve with absolute ethanol at a weight ratio of 1:30, add 3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane and acid-activated Th...

Embodiment 3

[0050] A preparation method of sepiolite / polyaniline nanocomposite material, the preparation steps are as follows:

[0051] 1) Add the raw material of sepiolite passing through 80 mesh sieve and distilled water to mix in a weight ratio of 1:60, stir and mix vigorously for 1 hour, then let it stand for 12 hours, take the upper layer of sepiolite suspension, suction filter, wash with distilled water, and store at 60°C Vacuum drying for 24h to obtain washed sepiolite;

[0052] 2) Mix the washed sepiolite passed through a 200-mesh sieve with an aqueous hydrochloric acid solution with a concentration of 2mol / L at a weight ratio of 1:30, then stir at 60°C for 8 hours, filter, wash with distilled water until neutral, and vacuum at 60°C Dry for 24 hours to obtain acid-activated sepiolite;

[0053] 3) Mix the acid-activated sepiolite and anhydrous toluene passing through a 200-mesh sieve in a ratio of 1:40 by weight, add diaminodiethoxysilane, diaminodiethoxysilane and acid-activated ...

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Abstract

The invention discloses a preparation method of a sepiolite / polyaniline nanocomposite material. The preparation method is characterized by comprising the following steps: mixing sepiolite with water, standing, filtering an upper-layer sepiolite suspension liquid, washing with water, and drying to obtain washed sepiolite; mixing the washed sepiolite with hydrochloric acid, stirring in a water bath, filtering, washing solids with water, and drying to obtain acid activated sepiolite; mixing the acid activated sepiolite with an organic solvent, adding amino-carrying silane coupling agent, mixing, stirring in the water bath, filtering, washing, and drying to obtain organized modified sepiolite; mixing the organized modified sepiolite with water into a dispersion liquid; adding a dopant and phenylamine while stirring, cooling, adding an oxidant for stirring, reacting and then washing and drying materials, to obtain a product sepiolite / polyaniline nanocomposite material. The prepared composite material has high electric conductivity and high specific capacitance, and is applicable to the fields of a supercapacitor electrode material, a secondary material, an electromagnetic shielding material and the like.

Description

technical field [0001] The invention belongs to the preparation of inorganic mineral and conductive polymer nano composite material, and relates to a preparation method of sepiolite / polyaniline nano composite material. The sepiolite / polyaniline nanocomposite material prepared by the invention has high electrical conductivity and high specific capacitance, and can be used in the fields of supercapacitor electrode materials, secondary batteries, electromagnetic shielding materials and the like. Background technique [0002] As one of the conductive polymers, polyaniline has attracted widespread attention due to its easy preparation, high temperature resistance, good oxidation resistance and high conductivity. It has a wide range of applications in the fields of secondary batteries, electrochemistry and electromagnetic shielding. use. However, pure polyaniline has disadvantages such as insolubility and infusibility, poor mechanical ductility and difficult processing, which lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K9/06C08K3/34
Inventor 胡小平付志兵王朝阳常艳
Owner SOUTHWEAT UNIV OF SCI & TECH
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