Nano graphite flake/polyaniline composite club-shaped material and method for preparing same

A technology of nano-graphite and polyaniline, which is applied in the field of nano-rod composite materials and its preparation, can solve the problems of large environmental pollution, affecting the performance of composite materials, uniform dispersion of nano-graphite sheets, etc., and achieves low environmental pollution, high production efficiency, Ease of industrial production

Inactive Publication Date: 2010-09-15
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems in the prior art that the nano-graphite sheets cannot be uniformly dispersed in the polymer at the nanometer level, which affects the performance of the composite material and the environmental pollution, and provides a graphite graphite sheet with good thermal and electrical properties Nano graphite flake / polyaniline composite rod material

Method used

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  • Nano graphite flake/polyaniline composite club-shaped material and method for preparing same
  • Nano graphite flake/polyaniline composite club-shaped material and method for preparing same
  • Nano graphite flake/polyaniline composite club-shaped material and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, 1mL (about 1g) of aniline distilled under reduced pressure and 2.5g of ammonium persulfate were respectively dissolved in 100mL sulfuric acid solution for acidification treatment; the aniline solution was placed in an ultrasonic instrument, and 0.005g was then ultrasonicated for about 10min. The nano-graphite flakes were added to ultrasonic for about 20 minutes until the dispersion was uniform. Then, the above-mentioned ammonium persulfate solution was added dropwise to the aniline solution under ultrasonic conditions, and the temperature was maintained at 25° C. and then ultrasonicated for 6 h to ensure complete polymerization. Filter and wash until the filtrate is colorless, place the product in a sulfuric acid solution and stir for 3 hours, then filter and wash with deionized water once to remove excess sulfuric acid, and then dry at 50 °C for 12 hours to obtain nanographite flakes / polyaniline composite rod-shaped material. The electrical conductivity o...

Embodiment 2

[0025] Example 2. Dissolve 1 mL of aniline distilled under reduced pressure and 2.5 g of ammonium persulfate in 100 mL of sulfuric acid solution, respectively, place the aniline solution in an ultrasonic device for about 10 minutes, and then add 0.008 g of nano-graphite flakes to ultrasonic for about 20 minutes. Evenly dispersed. Then, the above-mentioned ammonium persulfate solution was added dropwise to the aniline solution under ultrasonic conditions, and the temperature was maintained at 25° C. and then ultrasonicated for 6 h to ensure complete polymerization. Filter and wash until the filtrate is colorless, place the product in a sulfuric acid solution and stir for 3 hours, then filter and wash with deionized water once to remove excess sulfuric acid, and then dry at 50 °C for 12 hours to obtain nanographite flakes / polyaniline composite rod-shaped material. The electrical conductivity of the composite rod material was 6.4 S / cm.

Embodiment 3

[0026] Example 3. Dissolve 1 mL of aniline distilled under reduced pressure and 2.5 g of ammonium persulfate in 100 mL of sulfuric acid solution, respectively, place the aniline solution in an ultrasonic device for about 10 minutes, and then add 0.01 g of nano-graphite flakes to ultrasonic for about 20 minutes. Evenly dispersed. Then, the above-mentioned ammonium persulfate solution was added dropwise to the aniline solution under ultrasonic conditions, and the temperature was maintained at 25° C. and then ultrasonicated for 6 h to ensure complete polymerization. Filter and wash until the filtrate is colorless, place the product in a sulfuric acid solution and stir for 3 hours, then filter and wash with deionized water once to remove excess sulfuric acid, and then dry at 50 °C for 12 hours to obtain nanographite flakes / polyaniline composite rod-shaped material. The electrical conductivity of the composite rod material was 8.4 S / cm.

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Abstract

The invention discloses nano graphite slice / polyaniline composite rod-like material, which is prepared through respectively dissolving aniline and ammonium persulphate in acid solution to conduct acid-treatment, placing aniline acid solution into an ultrasonic apparatus, dispersing for 5-15 minutes with ultrasonic, adding 0.5%-2.5% nano graphite slice into the ultrasonic apparatus, continuing to disperse for 10-30min with ultrasonic, then adding ammonium persulphate solution which is acidized into the ultrasonic apparatus, continuously conducting ultrasonic polymerization for 5-7h under constant temperature, filtering polymerisate, scouring polymerisate with distilled water until non color to obtain nano graphite slice / polyaniline composite products, then placing products in sulfuric acidsolution whose concentration is 15-20% to stir for 2-4h, filtering and scouring with deionized water, removing redundant sulfuric acid and drying, thereby obtaining the composite rod-like material. The invention adopts one-step ultrasonic polymerization method, and has simple reaction process, high production efficiency, low cost and small environment pollution, and the product has excellent heatstability and conductivity property.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a nano-rod-shaped composite material with polyaniline as the main body and a preparation method thereof. Background technique [0002] Conductive polymer materials have attracted much attention due to their potential and wide range of applications. Due to a series of characteristics: low cost, easy synthesis, good thermal stability, reversible electrochemical activity, high room temperature conductivity, low permeability threshold for mixing with polymers, polyaniline has a wide range of applications, such as using Used in secondary batteries, electrochromic devices, antistatic, electromagnetic shielding, military camouflage, anti-corrosion coatings, etc. Therefore, polyaniline (PANI) has become one of the conductive polymers most concerned by scientists today. However, the insoluble and refractory characteristics of polyaniline lead to its poor processing performance, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/02C08K7/00C08K3/04C08G73/02
Inventor 莫尊理史华锋陈红牛贵平赵仲丽
Owner NORTHWEST NORMAL UNIVERSITY
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