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Mono-layer graphite oxide and water-soluble high molecule reinforced compound material

A technology of water-soluble polymers and reinforced composite materials, which is applied in the direction of nanotechnology, nanotechnology, and nanotechnology for materials and surface science. It can solve problems such as difficult dispersion, technical limitations, and easy aggregation, and improve mechanical properties. , easy to popularize and apply, and reduce costs

Inactive Publication Date: 2009-03-11
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to some very insurmountable shortcomings of carbon nanotubes themselves, such as large-scale preparation of carbon nanotubes (especially single-walled carbon nanotubes), the product obtained by the method has a lot of impurities, is easy to aggregate and difficult to disperse, and has high preparation costs. , so that its practical application technology has been greatly restricted

Method used

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  • Mono-layer graphite oxide and water-soluble high molecule reinforced compound material
  • Mono-layer graphite oxide and water-soluble high molecule reinforced compound material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of single-layer graphite oxide material

[0023] The single-layer graphite oxide material (Carbon, 2204, 42, 2929-2937) was prepared with reference to the method reported in the literature. The single-layer graphite oxide material used in this example contains a large number of organic oxygen-containing functional groups including carboxyl groups, hydroxyl groups, epoxy groups, carbonyl groups, etc., and the average size of the single-sheet area is 6μm 2 , The average thickness of a single sheet is 0.8nm (the same in the following examples).

[0024] Preparation of 0.3wt% single-layer graphite oxide / polyvinyl alcohol composite material

[0025] Dissolve 3 mg of single-layer graphite oxide material in 6 ml of distilled water and sonicate for half an hour. During this process, the single-layer graphite oxide material is uniformly and stably dispersed in the aqueous solution. Dissolve 1g of polyvinyl alcohol (molecular weight: 30,000 to 50,000, alcoholysis degree: ...

Embodiment 2

[0028] Preparation of 0.5wt% single-layer graphite oxide / polyvinyl alcohol composite material

[0029] Dissolve 5 mg of single-layer graphite oxide material in 6 ml of distilled water and sonicate for half an hour. During this process, the single-layer graphite oxide material is uniformly and stably dispersed in the aqueous solution. Dissolve 1 g of polyvinyl alcohol into 14 ml of distilled water at 90°C, and cool the polyvinyl alcohol solution to 40°C after it is completely dissolved. Then the dispersed single-layer graphite oxide aqueous solution is added dropwise to the polyvinyl alcohol solution. After the mixed solution is continuously sonicated for half an hour, it is cast on a polytetrafluoroethylene substrate to form a film, and vacuum-baked at 60° C. until the quality is basically unchanged.

[0030] Compared with the pure polyvinyl alcohol film, the tensile strength of 0.5wt% single-layer graphite oxide / polyvinyl alcohol film is increased by 47%, and the Young's modulus ...

Embodiment 3

[0032] Preparation of 0.7wt% single-layer graphite oxide / polyvinyl alcohol composite material

[0033] Dissolve 7 mg of single-layer graphite oxide material in 6 ml of distilled water and sonicate for half an hour. During this process, the single-layer graphite oxide material is uniformly and stably dispersed in the aqueous solution. Dissolve 1 g of polyvinyl alcohol into 14 ml of distilled water at 90°C, and cool the polyvinyl alcohol solution to 40°C after it is completely dissolved. Then the dispersed single-layer graphite oxide aqueous solution is added dropwise to the polyvinyl alcohol solution. After the mixed solution is continuously sonicated for half an hour, it is cast on a polytetrafluoroethylene substrate to form a film, and vacuum-baked at 60° C. until the quality is basically unchanged.

[0034] Compared with the pure polyvinyl alcohol film, the tensile strength of the 0.7wt% single-layer graphite oxide / polyvinyl alcohol film is increased by 76%, and the Young's modu...

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Abstract

The invention relates to a monolayer graphite oxide and water-soluble polymer reinforced composite material and a preparation method thereof. The preparation method comprises a concrete step of filling a water-soluble polymer matrix with monolayer graphite oxide material, wherein the weight proportion is 0.1 to 20 percent of the monolayer graphite oxide and 99.9 to 80 percent of the water-soluble polymer matrix material. The preparation method is characterized by utilizing the excellent mechanical properties, large length-diameter ratio and good water dispersity of the monolayer graphite oxide to prepare the reinforced water-soluble polymer composite material. As a solvent used in the process of preparing the composite material is mainly water, the preparation method is friendly to environment, simple in process and easy to popularize and apply.

Description

Technical field [0001] The invention relates to the preparation of functional composite materials, in particular to a single-layer graphite oxide and water-soluble polymer reinforced composite material and a preparation method thereof. Background technique [0002] Compared with traditional filler materials, nano-materials, due to their many advantages, require only a small amount of addition to greatly improve the performance of polymer composites. In the past ten years or so, due to the outstanding performance of carbon nanotubes, the use of carbon nanotubes as carbon-based nano-reinforcement materials to improve the performance of polymer composites has received extensive attention. However, due to the disadvantages of carbon nanotubes that are very difficult to overcome, such as large-scale preparation of carbon nanotubes (especially single-walled carbon nanotubes), the products obtained by the method have many impurities, are easy to aggregate and are difficult to disperse, ...

Claims

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Application Information

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IPC IPC(8): C08L101/14C08K7/00C08J3/215C08L29/04C08L79/02C08L33/02C08L25/18C08L33/26C08L71/02
CPCC08J5/005C08L79/02C08J3/215C08L71/02B82Y30/00C08K9/04C08K3/04
Inventor 陈永胜梁嘉杰黄毅马延风张龙王燕
Owner NANKAI UNIV