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Preparation method for mixture of polymer and graphene

A technology of polymer and graphene, which is applied in the field of preparation of polymer-graphene mixture, can solve problems such as corrosion and removal of organic solvents, cost constraints, etc., and achieve the effect of simple and commonly used additives, low cost and excellent performance

Inactive Publication Date: 2014-04-16
HUAQIAO UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the environmental protection of organic solvents in liquid phase ball milling, the corrosion and removal of organic solvents, the maintenance of equipment, and cost issues all restrict its industrialization.

Method used

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  • Preparation method for mixture of polymer and graphene
  • Preparation method for mixture of polymer and graphene
  • Preparation method for mixture of polymer and graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of preparation method of polymer-graphene mixture, such as Figure 1-2 As shown, it is achieved by the following scheme: Accurately weigh 0.3g of expanded graphite and 29.7g of polyvinyl chloride powder, add them to 500ml of distilled water, and disperse them uniformly by magnetic stirring to obtain a suspension. Filter the suspension, take the solid and dry it to obtain a uniform powder, which is the polyvinyl chloride-graphite powder pre-mixture. The pre-mixture is moved to a stirring ball mill ball mill tank with a volume of 400ml equipped with zirconia balls, the mass ratio of zirconia balls to expanded graphite is about 2000:1, and the ball mill is stirred at a speed of 200 rpm for 6h to obtain Powdered polyvinyl chloride-graphene nano-hybrid. The mixture and the grinding balls are added to water for cleaning, and the solids obtained by filtering the cleaning solution after taking out the grinding balls are dried to obtain the powdery polyvinyl chloride-gra...

Embodiment 2

[0034] A preparation method of a polymer-graphene mixture, which is realized by the following scheme: Accurately weigh 0.15g of earthy graphite and 29.85g of polyethylene powder, add them to 500ml of absolute ethanol, and disperse them uniformly by ultrasonic method to obtain a suspension liquid. Filter the suspension, take the solid and dry it to obtain a uniform powder, which is the polyethylene-graphite powder pre-mixture. After the pre-mixture is evenly divided into 4 parts, each part is put into a polytetrafluoroethylene ball mill tank with a volume of 100ml together with steel balls. In each part, the mass ratio of steel balls to earthy graphite is about 2400:1. Planetary ball milling at a speed of 240 rpm for 80 hours to obtain a powdery polyethylene-graphene nanometer mixture. Add the mixture together with the grinding balls into water for cleaning, take out the grinding balls, filter the solids from the cleaning solution, and dry them to obtain the powdery polyethylene...

Embodiment 3

[0036] A preparation method of a polymer-graphene mixture is realized by the following scheme: Accurately weigh 3.0g of flake graphite and 97.0g of polypropylene powder, add them to 2000ml of distilled water, and uniformly disperse them by magnetic stirring to obtain a suspension. Filter the suspension, take the solid and dry it to obtain a uniform powder, which is the polypropylene-graphite powder pre-mixture. The pre-mixture is moved to the horizontal ball mill ball mill tank of 5000ml with a volume of agate balls, the mass ratio of agate balls to flake graphite is about 600:1, and ball milled for 50h at a speed of 300 revs / min to obtain powdery aggregate Propylene-graphene nanohybrids. Add the mixture together with the grinding balls to absolute ethanol for cleaning, take out the grinding balls, filter the solids from the cleaning liquid, and dry them to obtain the powdery polypropylene-graphene nano mixture.

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Abstract

The invention discloses a preparation method for a mixture of a polymer and graphene. The advantage that graphite powder and the polymer are both granular powder is utilized, a graphite layer is stripped in situ according to a dry ball milling method, and the mixture of polymer and grapheme is prepared. The preparation method particularly comprises the following steps: (1) premixing the graphite powder and the polymer; (2) conducting ball milling and stripping on the pre-mixture fully in a ball mill to prepare the mixture of the graphite powder and the polymer. The preparation method adopts the dry ball milling method, so problems in solvent recovery and pollution caused by methods of solution mixing, in situ polymerization, wet ball milling, and the like are avoided; meanwhile, the defect of uneven dispersion of the graphene during fusing and dispersing process is overcome, the technological operation is simplified, and promotion and use are facilitated; the mixture of the polymer and the graphene is suitable for polymer processing methods of extrusion, injection molding, mould pressing, blow molding, curtain coating, and the like.

Description

technical field [0001] The invention relates to a preparation method of a polymer-graphene mixture, which belongs to the field of polymer nanocomposite materials. Background technique [0002] Due to its unique structure, graphene has excellent properties in many aspects, such as electronic properties, mechanical properties, mechanical properties, optical properties, thermal properties, etc. It is called the star of future materials. [0003] Graphene is the thinnest material found in the world so far, with a single layer thickness of only 0.3354nm, but its specific surface area is as high as 2965m 2 / g. [0004] Measurements have found that graphene is currently the material with the highest mechanical strength in the world, with an elastic modulus as high as 1TPa, a tensile strength as high as 180GPa, and a breaking strength as high as 125GPa. In addition, the room temperature thermal conductivity of monolayer suspended graphene can reach 3000-5000W / (m·K), and the electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/06C08L23/12C08L25/06C08L77/02C08L81/06C08L81/02C08L27/18C08L59/00C08L69/00C08L61/06C08L23/28C08L55/02C08L71/10C08L25/12C08L27/24C08K3/04B29B13/10B29B13/00
Inventor 陈国华黄卫明赵立平
Owner HUAQIAO UNIVERSITY
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