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Aminated graphene oxide/high-density polyethylane nano composite membrane and preparation method thereof

A high-density polyethylene and nano-composite technology, applied in the direction of graphite, can solve the problems of reducing gas permeation channels, unable to improve the barrier properties of non-polar polymers, and high barrier properties, achieving simple process, reducing permeable area, improving The effect of barrier properties

Active Publication Date: 2015-04-08
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the defects in the above-mentioned prior art, the object of the present invention is to provide an aminated graphene oxide / high-density polyethylene nanocomposite membrane and a preparation method thereof, which can overcome the insoluble and non-polar solvent in the existing method. Polymers and traditional graphene oxide cannot improve the barrier properties of non-polar polymers, and can reduce gas permeation channels. The aminated graphene oxide / polyethylene nanocomposite membrane prepared by this method has a uniform shell-core isolation structure , high barrier performance

Method used

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  • Aminated graphene oxide/high-density polyethylane nano composite membrane and preparation method thereof
  • Aminated graphene oxide/high-density polyethylane nano composite membrane and preparation method thereof
  • Aminated graphene oxide/high-density polyethylane nano composite membrane and preparation method thereof

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Embodiment 1

[0038] A kind of aminated graphene oxide / high-density polyethylene nanocomposite membrane and preparation method thereof, comprises the following steps:

[0039] 1) Preparation of graphene oxide

[0040] First, graphene oxide was prepared by the improved Hummers method: 2 g of expandable graphite was weighed and added to 100 mL of concentrated H with a mass concentration of 98%. 2 SO 4 After stirring in an ice-water bath, gradually add 10g KMnO 4 , at 10°C, reacted for 2.5h. Then continue to react in a constant temperature water bath at 35°C for 1.25h, then add 400mL of deionized water and 5mL of 30% H 2 o 2 After stirring evenly, the mixture was filtered while it was hot, washed with 30 mL of 5% HCl solution, and then repeatedly washed with a large amount of deionized water until there was no SO in the filtrate. 4 2- (with BaCl 2 solution test), and then use ultrasonic action to disperse it in 200mL deionized water to obtain graphene oxide colloidal suspension.

[004...

Embodiment 2

[0049] A kind of aminated graphene oxide / high-density polyethylene nanocomposite membrane and preparation method thereof, comprises the following steps:

[0050] 1) Preparation of graphene oxide

[0051] First, graphene oxide was prepared by the improved Hummers method: 3g of expandable graphite was weighed and added to 110mL of concentrated H with a mass concentration of 98%. 2 SO 4 After stirring in an ice-water bath, gradually add 12g KMnO 4 , At 15°C, react for 2h. Then continue to react in a constant temperature water bath at 33°C for 1.5h, and then add 450mL of deionized water and 20mL of H2O with a mass concentration of 30% to the mixture system 2 o 2 After stirring evenly, the mixture was filtered while it was hot, washed with 35 mL of 5% HCl solution, and then repeatedly washed with a large amount of deionized water until there was no SO in the filtrate. 4 2- (with BaCl 2 solution test), and then use ultrasonic action to disperse it in 300mL deionized water to ...

Embodiment 3

[0058] A kind of aminated graphene oxide / high-density polyethylene nanocomposite membrane and preparation method thereof, comprises the following steps:

[0059] 1) Preparation of graphene oxide

[0060] First, graphene oxide was prepared by the improved Hummers method: 4g of expandable graphite was weighed and added to 120mL of concentrated H with a mass concentration of 98%. 2 SO 4 After stirring in an ice-water bath, gradually add 20g KMnO 4 , At 15°C, react for 2h. Subsequently, the reaction was continued for 1 h in a constant temperature water bath at 37°C, and 600 mL of deionized water and 25 mL of H2O with a mass concentration of 30% were successively added to the mixture system. 2 o 2 After stirring evenly, the mixture was filtered while it was hot, washed with 40 mL of 5% HCl solution, and then repeatedly washed with a large amount of deionized water until there was no SO in the filtrate. 4 2- (with BaCl2 solution test), and then use ultrasonic action to dispers...

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Abstract

The invention discloses an aminated graphene oxide / high-density polyethylane nano composite membrane and a preparation method thereof, which belong to the technical field of high-molecular composite material. A technical scheme is characterized in that graphene oxide and lauryl amine are reacted to prepare the aminated graphene oxide, the aminated graphene oxide and high density polyethylane powder are fully mixed in xylene to prepare a fluid suspension, pumping filtration under vacuum and drying processes are carried out on the fluid suspension, melting hot-pressing treatment is carried out, so that the aminated graphene oxide / high-density polyethylane nano composite membrane is prepared. According to the invention, technology is simple, cost is low, a polymer is not required for being dissolved, and interface compatibility of between the nano composite membrane and a polar polymer / a non-polar polymer can be effectively increased. Simultaneously, a shell-core isolation structure which is characterized in that the aminated graphene oxide is taken as a shell and high density polyethylane is taken as a core can be formed through high-temperature hot pressing, gas permeable area can be greatly reduced, gas diffusion path can be obviously complicated, and the gas barrier property of the material can be obviously increased.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and relates to a nanocomposite film and a preparation method thereof, in particular to an aminated graphene oxide / high-density ethylene nanocomposite film and a preparation method thereof. Background technique [0002] In recent years, polymer films have been widely used in industry and agriculture due to their excellent comprehensive properties. However, due to the safety accidents and intermediate losses caused by the poor barrier properties of general-purpose polymer materials, they cannot be widely promoted in some fields. For example, polymer materials for oil and gas gathering and transportation are prone to oil and gas leakage due to their low barrier properties, causing serious accidents , causing huge economic losses, casualties and environmental problems. The intermediate loss of food and pharmaceutical packaging materials due to poor barrier is as high as 30-50%. ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K9/04C08K9/02C08K3/04C08J5/18C01B31/04
CPCC01B32/23C08J5/18C08J2323/06C08K3/04C08K9/02C08K9/04C08L2201/14C08L2203/16C08L2207/062C08L23/06
Inventor 李厚补张学敏戚东涛任鹏刚蔡雪华张华
Owner BC P INC CHINA NAT PETROLEUM CORP
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