Polyaniline/silver conductive nanocomposite material and preparation method thereof

A composite material, conductive nanotechnology, applied in non-metallic conductors, organic material conductors and other directions, can solve problems that have not been reported in the literature, and achieve the effects of inhibiting agglomeration, uniform morphology, thermal performance and processability.

Inactive Publication Date: 2010-09-22
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no literature report on the preparation of polyaniline / silver conductive nanocomposites by the combination of ultraviolet irradiation technology and reverse microemulsion synthesis technology

Method used

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  • Polyaniline/silver conductive nanocomposite material and preparation method thereof
  • Polyaniline/silver conductive nanocomposite material and preparation method thereof
  • Polyaniline/silver conductive nanocomposite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: used silver nitrate (analytically pure), its main component (%) is: AgNO 3 ≥99.8%, water insoluble ≤0.005%, chloride ≤0.001%, sulfate ≤0.004%, Fe≤0.0004%, Cu≤0.001%, Pb≤0.001%, hydrochloric acid non-precipitate ≤0.02%.

[0032] Measure 6ml of 0.5M silver nitrate solution prepared in advance into a beaker, add 5.35g of n-hexanol, 150ml of cyclohexane and 2.16g of sodium lauryl sulfate, place it in ultrasonic cleaning, and ultrasonically disperse it to form a translucent reverse glue Beam solution A. Weigh a certain amount of aniline and dissolve it in 1M nitric acid solution, configure 0.5M aniline / nitric acid solution, measure 6ml of aniline / nitric acid solution in a beaker, add 5.35g n-hexanol, 150ml cyclohexane and 2.16g dodecyl Sodium sulfate, as above, prepare an equal volume of reverse micellar solution B. Mix the reverse micellar solutions A and B, and magnetically stir for 10 minutes to make them evenly mixed. Cover the mouth of the beaker with a...

Embodiment 2

[0035]Measure 6ml of 0.2M silver nitrate solution prepared in advance into a beaker, add 5.35g of n-hexanol, 150ml of cyclohexane and 2.16g of sodium lauryl sulfate, and ultrasonically disperse to form reverse micellar solution A. Prepare 0.2M aniline / nitric acid solution, measure 4ml of aniline / nitric acid solution, and prepare an equal volume of reverse micellar solution B as above. Mix the reverse micellar solutions A and B, and magnetically stir to make them evenly mixed. Cover the mouth of the beaker with a watch glass, place the reaction system in a fume hood, and keep the purple light lamp at a vertical distance of 10 cm from the liquid surface. Turn on the purple light, and magnetically stir the reaction at room temperature for 20 h. Add methanol, stir for 3h to break the emulsion, filter and wash until the filtrate is colorless and foam-free. The filter cake was dispersed into 4M hydrochloric acid solution, stirred for 2 h for re-doping, then centrifuged and washed ...

Embodiment 3

[0039] Measure 6ml of 0.5M silver nitrate solution prepared in advance into a beaker, add 5.35g of n-hexanol, 150ml of cyclohexane and 2.16g of sodium lauryl sulfate, and ultrasonically disperse to form reverse micellar solution A. Prepare 0.5M aniline / nitric acid solution, measure 4ml of aniline / nitric acid solution in a beaker, add 5.35g n-hexanol, 150ml cyclohexane and 2.16g sodium dodecyl sulfate, the same as the reverse micellar solution B configured above. Mix the reverse micellar solutions A and B, and magnetically stir to make them evenly mixed. Cover the mouth of the beaker with a watch glass, place the reaction system in a fume hood, and keep the purple light lamp at a vertical distance of 10 cm from the liquid surface. Turn on the purple light, and magnetically stir the reaction at room temperature for 20 h. Add methanol, stir for 3h to break the emulsion, filter and wash until the filtrate is colorless and foam-free. The filter cake was dispersed into 4M sulfuric...

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Abstract

The invention relates to a polyaniline / silver conductive nanocomposite material and a preparation method thereof, which belong to the technical field of composite materials. In the method, aniline is polymerized to form polyaniline and silver ions are reduced in situ at the same time by adopting an opposite phase microemulsion polymerization method without the addition of an oxidizer or a reducer and by effectively utilizing UV irradiation technology; and silver particles are uniformly dispersed in the polyaniline to form a nano-core-shell structure of which silver particles are coated by the polyaniline. By using the method, the problem of system incompatibility in a process of compounding a metal with the polyaniline in situ is solved, and the problem of agglomeration when nano-silver particles and the polyaniline are polymerized is solved, so that the generated nano-silver particles are dispersed in the polyaniline uniformly to form the nano-core-shell structure. Therefore, the conductivity, the thermodynamic stability and the processability of the polyaniline are improved effectively.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a polyaniline-metal conductive composite material, in particular to a polyaniline / silver conductive nano composite material. The present invention also relates to the preparation method of the polyaniline / silver conductive nano-composite material, in particular to synthesizing the polyaniline / silver conductive nano-composite material in the inverse microemulsion system without adding any oxidant and reducing agent. material method. Background technique [0002] Since the discovery of the conductive phenomenon of polyacetylene in 1977, after more than 30 years of development, conductive polymers have become an important aspect in the field of polymer materials. In the 1980s, German scientist Gleiter successfully prepared nanoscale bulk metal crystals such as iron, palladium, and copper, which immediately attracted people's attention to nanomaterial research and became a hot spot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K3/08C08L79/02H01B1/12
Inventor 李芝华林伟卢健体
Owner CENT SOUTH UNIV
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