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Graphene/carbon nano tube hybridized filler network enhanced rubber material and preparation method thereof

A technology of carbon nanotubes and reinforced rubber, which is applied in the field of rubber materials, can solve problems such as high cost, poor dispersion, and obvious agglomeration, and achieve good mechanical properties, increase production costs, and simple preparation process

Active Publication Date: 2015-12-09
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this method adopts its solution blending method to prepare polymer composite materials, it needs to use a large amount of organic solvents, and its existing problems are high cost and pollution to the environment; if this method adopts its mechanical blending method to prepare polymer composite materials , the dispersion of graphene and carbon nanotubes in the polymer matrix material is not good, the agglomeration is obvious, and the properties of the polymer composite are not uniform
In addition, neither the solution blending method nor the mechanical blending method is conducive to the formation of the filler network, and cannot obtain a significant reinforcing effect.

Method used

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  • Graphene/carbon nano tube hybridized filler network enhanced rubber material and preparation method thereof
  • Graphene/carbon nano tube hybridized filler network enhanced rubber material and preparation method thereof
  • Graphene/carbon nano tube hybridized filler network enhanced rubber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 0.5g of graphene oxide and 1g of multi-walled carbon nanotubes into 100g of water, and disperse ultrasonically for 1 hour to obtain a graphene oxide / carbon nanotube hybrid suspension, and then add the hybrid suspension to 200g of natural In the latex, stir mechanically for 30 minutes, add 50g of sodium chloride solution with a mass concentration of 20%, to obtain a suspension of graphene oxide / carbon nanotubes / natural rubber particles, add 2g of sodium borohydride to reduce graphene oxide, and the reduction time is 24 Hours, the reduction temperature is 50°C. The reduced product was filtered, washed with water 10 times, and dried to a constant weight to obtain a graphene / carbon nanotube / natural rubber nanocomposite material. The composite material is formed by traditional rubber vulcanization method, and the tensile strength of the obtained sheet is 35MPa, the elongation at break is 600%, the fracture toughness is 7GJ, and the tear energy is 1600J / m 2 The crack gro...

Embodiment 2

[0032] Add 1g of graphene oxide and 5g of multi-walled carbon nanotubes into 100g of water, and ultrasonically disperse for 2 hours to obtain a graphene oxide / carbon nanotube hybrid suspension, and then add 1000g of styrene-butadiene with a solid content of 10% to the hybrid suspension In the latex, stir mechanically for 5 hours, add 100g of calcium chloride solution with a mass concentration of 10%, to obtain a suspension of graphene oxide / carbon nanotubes / styrene-butadiene rubber particles, add 5g of hydrazine hydrate to reduce graphene oxide, and the reduction time is 5 hours, the reduction temperature is 100°C. The reduced product was filtered, washed 20 times with water, and dried to a constant weight to obtain a graphene / carbon nanotube / styrene-butadiene rubber nanocomposite material. The composite material is formed by the traditional rubber vulcanization method, and the energy dissipation capacity of the sheet stretched to 400% strain is 12MJ / m 3 , Fracture toughness ...

Embodiment 3

[0036] Add 2.5g of graphene oxide and 5g of multi-walled carbon nanotubes into 100g of water, and ultrasonically disperse for 2 hours to obtain a graphene oxide / carbon nanotube hybrid suspension, and then add the hybrid suspension to 100g of polycarbonate with a solid content of 50%. In the ethyl acrylate emulsion, mechanically stirred for 10 minutes, adding 10 g of aluminum chloride solution with a mass concentration of 20%, to obtain a suspension of graphene oxide / carbon nanotubes / polyethyl acrylate particles, adding 20 g of vitamin C to reduce graphene oxide, The reduction time is 24 hours, and the reduction temperature is 50°C. The reduced product was filtered, washed with water for 5 times, and dried to a constant weight to obtain a graphene / carbon nanotube / polyethylacrylate nanocomposite material. The composite material is molded by traditional rubber vulcanization method, and the conductivity of the prepared sheet is 10S / m.

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Abstract

The invention discloses a graphene / carbon nano tube hybridized filler network enhanced rubber material and a preparation method thereof. According to the rubber material, graphene and carbon nano tubes are taken as filler, a hybridized filler network is formed in a rubber material matrix, wherein 100 parts by mass of the rubber material matrix are adopted, and 0.1-20 parts by mass of graphene and the carbon nano tubes are adopted. The rubber material is prepared according to steps as follows: oxidized graphene and the carbon nano tubes are added to water, and a hybridized suspension liquid is prepared; the prepared hybridized suspension liquid is added to an emulsion of the rubber material matrix and mixed, a demulsifier is added for demulsification, an oxidized graphene / carbon nano tube / rubber particle suspension liquid is prepared, then, a reducing agent is added for a reduction reaction, solid-liquid separation is performed after sufficient reaction, an obtained solid phase is washed and dried, and the rubber material is prepared. The graphene and the carbon nano tubes form the hybridized filler network in the rubber material and have an energy dissipation function, so that the rubber material has excellent mechanical property, fatigue resistance, crack growth resistance and conductive property.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a rubber material modified and reinforced by using graphene and carbon nanotubes as fillers and a preparation method thereof. Background technique [0002] The mechanical properties of rubber materials are crucial to the performance of rubber products. Improving the mechanical properties of rubber materials has always been a topic of concern to scientific and technological workers in the field. A common practice is to add inorganic fillers to the rubber material matrix to improve the mechanical properties of the rubber material. Graphene and carbon nanotubes have large specific surface area, excellent mechanical properties, electrical conductivity and barrier properties, and are ideal fillers for modifying rubber materials, which have been successfully used to enhance the mechanical properties of rubber materials. At present, graphene or carbon nanotubes are mainly use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/06C08L33/08C08K7/24C08K3/04
Inventor 吴锦荣黄光速李恒毅郑静谢正田符玄
Owner SICHUAN UNIV
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