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Preparation method of carbon nano tube/polyvinyl alcohol conductive composite material

A conductive composite material and carbon nanotube technology, which is applied in the field of preparation of carbon nanotube/polyvinyl alcohol conductive nanocomposite materials, can solve the problems of unstable film quality, complex process, low yield, etc. Good performance and high yield results

Inactive Publication Date: 2015-02-11
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is that although the preparation methods of carbon nanotube / polyvinyl alcohol composite materials have improved the dispersion of carbon nanotubes in polyvinyl alcohol, they all adopt the mode of solution forming, and the mode of this solution processing needs Go through the process of dissolution and drying, so the process is complex, many procedures, high cost, low output, and unstable film quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method of carbon nanotube / polyvinyl alcohol conductive composite material, its steps are as follows:

[0017] (1) Add 20 grams of single-armed carbon nanotubes to 300 grams of plasticizer glycerol, and use an ultrasonic dispersion device to process for 150 minutes under the condition of ultrasonic dispersion frequency of 20 kHz to obtain a plasticizer containing carbon nanotubes;

[0018] (2) Put 500 grams of polyvinyl alcohol PVA1788 in a high-speed mixer, stir and heat up to 50°C, add the plasticizer containing carbon nanotubes in step (1), keep it warm for 30 minutes, and then add 30 grams of flow promoter Zinc stearate was stirred for 10 minutes to obtain a premix;

[0019] (3) The premixed material in step (2) was melted and granulated through a twin-screw extruder at a temperature of 140°C, and the speed of the twin-screw extruder was 100 rpm to obtain carbon nanotubes / polyethylene Vinyl Alcohol Conductive Composite.

Embodiment 2

[0021] A preparation method of carbon nanotube / polyvinyl alcohol conductive composite material, its steps are as follows:

[0022] (1) Add 80 grams of multi-armed carbon nanotubes to 400 grams of plasticizer polyethylene glycol, and use ultrasonic dispersion equipment to process for 150 minutes under the condition of ultrasonic dispersion frequency of 200 kHz to obtain a plasticizer containing carbon nanotubes;

[0023] (2) Put 800 grams of polyvinyl alcohol PVA0588 in a high-speed mixer, stir and heat up to 70°C, add the plasticizer containing carbon nanotubes in step (1), keep warm for 60 minutes, and then add 50 grams of flow promoter Magnesium stearate, stirred for 10-30 minutes to obtain a premix;

[0024] (3) The premixed material in step (2) was melted and granulated through a twin-screw extruder at a temperature of 190°C, and the speed of the twin-screw extruder was 300 rpm to obtain carbon nanotubes / polyethylene Vinyl Alcohol Conductive Composite.

Embodiment 3

[0026] A preparation method of carbon nanotube / polyvinyl alcohol conductive composite material, its steps are as follows:

[0027] (1) Add 30 grams of single-armed carbon nanotubes and 30 grams of multi-armed carbon nanotubes to 400 grams of plasticizer polyethylene glycol, and use ultrasonic dispersion equipment for 100 minutes under the condition of ultrasonic dispersion frequency of 1800 kHz to obtain Plasticizer for carbon nanotubes;

[0028] (2) Put 200 grams of polyvinyl alcohol PVA1788, 200 grams of polyvinyl alcohol PVA2488 and 200 grams of polyvinyl alcohol PVA0588 in a high-speed mixer, stir and heat up to 60 ° C, add the additive containing carbon nanotubes in step (1) Plasticizer, insulation 50 minutes, then add 40 grams of flow enhancer magnesium stearate, stir 20 minutes, obtain premix;

[0029] (3) The premixed material in step (2) was melted and granulated through a twin-screw extruder at a temperature of 160°C, and the speed of the twin-screw extruder was 200...

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Abstract

The invention discloses a preparation method of carbon nano tube / polyvinyl alcohol conductive composite material. The method comprises the following steps of: (1) adding 20-80 parts by weight of carbon nano tube into 300-400 parts by weight of plasticizer, processing the mixture with an ultrasonic dispersion device at the ultrasonic dispersion frequency of 20-200kHz for 10-150 minutes, obtaining the plasticizer with the carbon nano tube; (2) placing 500-800 parts by weight of polyvinyl alcohol into a high-speed mixer, heating up to 50-70 DEG C while stirring, adding the plasticizer with the carbon nano tube obtained in the step (1), preserving heat for 30-60 minutes, and then adding 30-50 parts by weight of flow promoter, and stirring for 10-30 minutes to get the premix; (3) fusing and granulating the premix obtained in the step (2) through a double-screw extruder under the temperature condition of 140-190 DEG C, thus, obtaining the carbon nano tube / polyvinyl alcohol conductive composite material, wherein the rotating speed of the double-screw extruder is 100-300 revolutions per minute. In the method provided by the invention, the processes of dissolving and drying in solution processing are omitted, the preparation method is available for continuous production, and is high in productivity, low in cost, simple and convenient.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a preparation method of a carbon nanotube / polyvinyl alcohol conductive nanocomposite material. Background technique [0002] Due to the mass production and application of plastics and their non-degradability, the plastic waste and residual films discarded in the environment are increasing day by day. The seriousness of waste plastics to environmental pollution has aroused widespread public concern. therefore. Carrying out research on fully degradable packaging materials has become a top priority. Polyvinyl alcohol (PVA) can be decomposed into carbon dioxide and water by microorganisms. The degradation is fast, non-toxic and thorough. Electrostatic properties, moisture permeability, oil resistance, toughness, etc. are superior to commonly used polyolefins, and at the same time have good water solubility, PVA is increasingly used as film and fiber materials. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L29/04C08K7/00C08K3/04C08K5/053C08K5/06
Inventor 潘玮赵尧敏张留学孙亚丽曲良俊裴海燕苏朝化
Owner ZHONGYUAN ENGINEERING COLLEGE
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