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A kind of nanocomposite conductive coating and preparation method thereof

A technology of nanocomposite materials and conductive coatings, which is applied in the field of nanocomposite conductive coatings and its preparation, can solve the problems of low production efficiency and poor conductivity of conductive paper, and achieve high production efficiency, low production energy consumption and reduced surface energy. Effect

Active Publication Date: 2017-04-12
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process, the steps of dipping, washing, and drying are repeated many times, and the production efficiency is low. Moreover, absolute ethanol (a volatile, flammable and explosive organic solvent) is used, and the conductive paper obtained has poor conductivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of nanocomposite conductive coating. (1): Place 150 mL of concentrated sulfuric acid with a mass fraction of 98% and 150 mL of concentrated nitric acid with a mass fraction of 69% in a 500 mL three-necked flask, add 8 g of carbon nanotubes, and then place it in a water bath, under the condition of condensation and reflux The mixture was heated to 80°C and stirred at this temperature for 4 h; the obtained mixture was suction filtered and washed with distilled water for several times until the pH of the filtrate was neutral. The obtained product was dried in an oven at 60°C for 24h, then ground and sieved to obtain modified carbon nanotubes;

[0033] (2): First, add 2 g of modified carbon nanotubes to the three-necked flask; then, add 200 mL of hydrochloric acid solution with a concentration of 1 mol / L to the three-necked flask; finally, add 18 g of aniline to the three-necked flask; The solution system in the three-necked flask obtained by the above...

Embodiment 2

[0036] A preparation method of nanocomposite conductive coating. (1): Place 150 mL of concentrated sulfuric acid with a mass fraction of 98% and 150 mL of concentrated nitric acid with a mass fraction of 69% in a 500 mL three-necked flask, add 8 g of carbon nanotubes, and then place it in a water bath, under the condition of condensation and reflux The mixture was heated to 80°C and stirred at this temperature for 4 h; the obtained mixture was suction filtered and washed with distilled water for several times until the pH of the filtrate was neutral. The obtained product was dried in an oven at 60°C for 24h, then ground and sieved to obtain modified carbon nanotubes;

[0037] (2): First, add 2 g of modified carbon nanotubes to the three-necked flask; then, add 200 mL of a hydrochloric acid solution with a concentration of 1 mol / L to the three-necked flask; finally, add 4.675 g of aniline to the three-necked flask; The solution system in the three-necked flask obtained by the ...

Embodiment 3

[0040] A preparation method of nanocomposite conductive coating. (1): Place 150 mL of concentrated sulfuric acid with a mass fraction of 98% and 150 mL of concentrated nitric acid with a mass fraction of 69% in a 500-ml three-necked flask, add 8 g of carbon nanotubes, and then place it in a water bath. The mixture was heated to 80°C and stirred at this temperature for 4 h; the obtained mixture was suction filtered and washed with distilled water for several times until the pH of the filtrate was neutral. The obtained product was dried in an oven at 60°C for 24h, then ground and sieved to obtain modified carbon nanotubes;

[0041] (2): First, add 2 g of modified carbon nanotubes to the three-necked flask; then, add 200 mL of hydrochloric acid solution with a concentration of 1 mol / L to the three-necked flask; finally, add 2 g of aniline to the three-necked flask; The solution system in the three-necked flask obtained by the above-mentioned mixing was placed in an ultrasonic cl...

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Abstract

The invention relates to nanometer composite conductive paint and a preparation method thereof. The preparation method comprises the following steps: modifying a carbon nanotube by utilizing concentrated nitric acid and concentrated sulfuric acid; enabling an in-situ composite reaction between the modified carbon nanotube and aniline by utilizing an ammonium persulfate solution as an initiating agent, so as to prepare a modified carbon nanotube-polyaniline nanometer composite material; preparing the conductive paint by utilizing the modified carbon nanotube-polyaniline nanometer composite material. The process for preparing the conductive paint comprises the following steps: dissolving carboxymethyl cellulose and polyvinyl alcohol in warm water at first, and then adding the modified carbon nanotube-polyaniline nanometer composite material; carrying out high-speed shearing for a certain period of time, and then adding butylbenzene latex, modified starch, a water-resistant agent, an anti-foaming agent, a lubricant and ammonia water in sequence; carrying out high-speed shearing again for a certain period of time to obtain a uniform water-phase dispersion system. The paint has the advantages that the preparation conditions are mild, no new equipment is needed, the preparation process is simple, and the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of preparation of special paper, in particular to a nano-composite conductive coating and a preparation method thereof, which can endow the coated paper with good electrical conductivity and mechanical properties. Background technique [0002] In recent years, with the rise of my country's economy, all walks of life are developing rapidly. As an important branch of the coating industry, conductive coatings have been widely used in the electronics industry, construction industry, aerospace, petrochemical and military industries. The most typical one is the electronics industry, where conductive coatings are usually coated on non-conductive substrates (such as paper, plastic, rubber, synthetic fibers, ceramics, etc.) to make them conductive, so as to achieve electrical conductivity, anti-static or The purpose of electromagnetic shielding. Coated conductive paper, a new type of special paper and functional pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/42D21H19/54D21H19/58D21H19/52D21H19/60D21H19/44D21H21/28C08G73/02
Inventor 唐艳军张宇
Owner ZHEJIANG SCI-TECH UNIV