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Oxidized graphene nano-ribbon/polymer composite film and preparation method thereof

A graphene nanoribbon and composite film technology, which is applied in the field of polymer composite film preparation, can solve the problems of unfavorable use, high preparation cost, and easy entanglement of graphene nanoribbons, and achieve low cost, simple preparation process, and excellent barrier The effect of performance and mechanical properties

Active Publication Date: 2014-10-01
福建宸琦新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon nanotubes are mainly divided into two types: single-walled carbon nanotubes and multi-walled carbon nanotubes. From the known literature, it is known that the graphene nanoribbons obtained by cutting single-walled carbon nanotubes by longitudinal oxidation are easy to entangle and are not conducive to use. , the graphene nanoribbons obtained by cutting multi-walled carbon nanotubes have neat edges, fewer defects in the ribbon structure, and have excellent electron transport properties, mechanical properties, transparency and impermeability, but their preparation costs are relatively expensive.

Method used

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  • Oxidized graphene nano-ribbon/polymer composite film and preparation method thereof
  • Oxidized graphene nano-ribbon/polymer composite film and preparation method thereof
  • Oxidized graphene nano-ribbon/polymer composite film and preparation method thereof

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preparation example Construction

[0031] The preparation of graphene oxide nanoribbons comprises the following steps:

[0032] 1) Mix 20 ml of H with a mass fraction of 85.8% 3 PO 4 The solution was added to a 500 ml round bottom flask with a magnetic rotor, and then 200 ml concentrated H 2 SO 4 Join in the round bottom flask, stir under the rotating speed of 300r / min;

[0033] 2) Add 1 g of multi-walled carbon nanotubes to the solution in step 1), stir for 2 h, and then add 6 g of KMnO 4 Add slowly to the above mixture in 3 steps, and stir for another 20 min;

[0034] 3) Move the reaction system in step 2) to an oil bath at 55°C, stir and react at a speed of 300r / min for 2 h, let cool to room temperature, and then pour into a solution containing 5 ml H 2 o 2 Condensate in the ice-water mixture of 24 h, and this moment solution turns dark green, shows that reaction is complete;

[0035] 4) The solution in step 3) was ultrasonically dispersed at 100 W for 30 min, washed and filtered on a polytetrafluoroe...

Embodiment 1

[0041] The preparation of graphene oxide nanobelt / polymer composite film comprises the following steps:

[0042] 1) Dissolve 15 g of polyester thermoplastic polyurethane in 40 ml of N-N dimethylformamide, and swell for 12 hours in a blast drying oven at 80 °C;

[0043] 2) Dissolve 0.045 g of graphene oxide nanoribbons in 10 ml of N-N dimethylformamide, and 100 W ultrasonic dispersion for 20 min;

[0044] 3) Mix the polymer solution in step 1) and the ultrasonically dispersed graphene oxide nanoribbons in step 2) evenly, 100 W ultrasonically disperse for 1 hour, and then stir on a mechanical mixer for 3 hours to form a paste liquid;

[0045] 4) Pour the pasty liquid into a small volumetric flask with a straw, and then pump out the air in the pasty liquid on a suction filter until there are no air bubbles in the volumetric flask; place the glass plate on the film coater, and use a wet Coat a film with a thickness of 0.09mm on the film preparation device, and then place the glas...

Embodiment 2

[0047] The preparation of graphene oxide nanobelt / polymer composite film comprises the following steps:

[0048] 1) Dissolve 15 g of polyether thermoplastic polyurethane in 60 ml of tetrahydrofuran, and swell for 12 hours in an air-blast drying oven at 80 °C;

[0049] 2) Dissolve 0.075 g of graphene oxide nanoribbons in 10 ml of tetrahydrofuran, and 100 W ultrasonic dispersion for 20 min;

[0050] 3) Mix the polymer solution in step 1) and the ultrasonically dispersed graphene oxide nanoribbons in step 2) evenly, 100 W ultrasonically disperse for 3 h, and then stir on a mechanical mixer for 2 h to form a paste liquid;

[0051] 4) Pour the pasty liquid into a small volumetric flask with a straw, and then pump out the air in the pasty liquid on a suction filter until there are no air bubbles in the volumetric flask; place the glass plate on the film coater, and use a wet The film preparation device was coated with a film with a thickness of 0.09 mm, and then the glass plate was...

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Abstract

The invention discloses an oxidized graphene nano-ribbon / polymer composite film and a preparation method thereof. The preparation method comprises the following steps: longitudinally cutting a multi-walled carbon nano-tube into oxidized graphene nano-ribbons of strip-shaped structures through oxidation; compounding the oxidized graphene nano-ribbons with a polymer to form the film. The composite film prepared according to the invention is excellent in barrier property and mechanical property, and has a certain fixed degree of transparency, thereby being widely applied to the field with higher barrier requirements. At present, mass production of multi-walled carbon nano-tubes is realized in domestic and foreign countries, so that the preparation cost of the oxidized graphene nano-ribbon is greatly reduced. The barrier property and mechanical property of the composite film can be greatly improved only with few oxidized graphene nano-ribbons. The preparation method is simple, high in operability, and is suitable for large-scale industrialized production.

Description

technical field [0001] The invention belongs to the technical field of polymer composite film preparation, and in particular relates to a graphene oxide nanobelt / polymer composite film and a preparation method thereof. Background technique [0002] The ideal graphene is a single-layer two-dimensional infinite structure with high crystallinity and semi-metallic electrical properties. It has become a research hotspot in the fields of energy storage materials, electronic devices, composite materials, etc., and graphene has excellent impermeability At present, it is gradually favored in the field of barrier materials, but the surface of graphene sheets prepared in practice often has wrinkle and undulation defects, which will inevitably affect its application in many fields. Graphene nanoribbons, a new type of carbon material emerging in recent years, have become the best candidates for transparent electrodes and barrier fillers due to their unique characteristics of high aspect ...

Claims

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Application Information

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IPC IPC(8): C08L75/06C08L75/08C08K7/00C08K3/04C08J5/18
CPCC08J5/18C08K7/00C08L23/06C08L25/16C08L27/06C08L29/04C08L33/10C08L75/06C08L75/08C08L77/00C08K3/042
Inventor 郑玉婴樊志敏林锦贤
Owner 福建宸琦新材料科技有限公司
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