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High-barrier double-bond functionalized graphene oxide/polyethylene film and preparation method thereof

A polyethylene film, high barrier technology, applied in flat products, other household appliances, applications, etc., can solve the problems of limited barrier performance improvement, difficult industrial application, complicated operation steps, etc., to achieve excellent film barrier performance, improve phase Capacitance, the effect of large market prospects

Active Publication Date: 2017-06-13
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing methods of using graphene oxide to improve the gas barrier properties of polymer materials, either it takes a lot of time, the operation steps are relatively complicated, and the improvement of barrier properties is limited; or toxic solvents must be used, which have a high boiling point and are difficult to completely evaporate. It has a certain negative effect on the environment, etc., and there are also problems such as low production efficiency and difficulty in industrial application.
Therefore, there is no method for using graphene oxide to improve the preparation of polymer materials with better gas barrier properties and industrial production.

Method used

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  • High-barrier double-bond functionalized graphene oxide/polyethylene film and preparation method thereof
  • High-barrier double-bond functionalized graphene oxide/polyethylene film and preparation method thereof
  • High-barrier double-bond functionalized graphene oxide/polyethylene film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Preparation of double bond functionalized graphene oxide:

[0035] 1-1) Add 3g graphite to 360mLH 2 SO 4 and 40mLH 3 PO 4 in ice bath, slowly add 18g KMnO 4 and stirred at 50°C; the reaction mixture was cooled to room temperature and placed in ice cubes, and 3 mL of H 2 o 2 (mass fraction 30%); at this moment, the mixed solution changed from purple black to bright yellow; after the mixed solution was filtered, it was centrifugally washed 5 times at 10000r / min with HCl (mass fraction 10%), and the residue was removed; then washed with water, centrifuged , freeze-drying, and ultrasonication to obtain brown graphene oxide GO;

[0036] 1-2) Add 0.3 g of the graphene oxide prepared in 1-1) to an anhydrous ethanol solution of 15 to 30 times the amount (mass ratio), ultrasonically disperse for 10 to 15 minutes, then add 0.5 to 2 times the amount of graphite oxide Vinyltrimethoxysilane with the amount (mass ratio) of vinyl trimethoxysilane, continue to ultrasonically ...

Embodiment 2

[0044] 1) Preparation of double bond functionalized graphene oxide:

[0045] 1-1) Add 3g graphite to 360mLH 2 SO 4 and 40mLH 3 PO 4 in ice bath, slowly add 18g KMnO 4 and stirred at 50°C; the reaction mixture was cooled to room temperature and placed in ice cubes, and 3 mL of H 2 o 2 (mass fraction 30%); at this moment, the mixed solution changed from purple black to bright yellow; after the mixed solution was filtered, it was centrifugally washed 5 times at 10000r / min with HCl (mass fraction 10%), and the residue was removed; then washed with water, centrifuged , freeze-drying, and ultrasonication to obtain brown graphene oxide GO;

[0046] 1-2) Add 0.3 g of the graphene oxide prepared in 1-1) to an anhydrous ethanol solution of 15 to 30 times the amount (mass ratio), ultrasonically disperse for 10 to 15 minutes, then add 0.5 to 2 times the amount ( (mass ratio) of vinyltriethoxysilane, continue to ultrasonically disperse for about 1h; place in an oil bath at 60°C, and...

Embodiment 3

[0054] 1) Preparation of double bond functionalized graphene oxide:

[0055] 1-1) Add 4g graphite to 460mLH 2 SO 4 and 40mLH 3 PO 4 in ice bath, slowly add 20g KMnO 4 and stirred at 50°C; the reaction mixture was cooled to room temperature and placed in ice cubes, and 4 mL of H 2 o 2 (mass fraction 30%); at this moment, the mixed solution changed from purple black to bright yellow; after the mixed solution was filtered, it was centrifugally washed 5 times at 10000r / min with HCl (mass fraction 10%), and the residue was removed; then washed with water, centrifuged , freeze-drying, and ultrasonication to obtain brown graphene oxide GO;

[0056] 1-2) Add 0.4 g of graphene oxide prepared in 1-1) to an anhydrous ethanol solution of 15 to 30 times the amount (mass ratio), ultrasonically disperse for 10 to 15 minutes, then add 0.5 to 2 times the amount ( Mass ratio) of allyltrimethoxysilane, continue to ultrasonically disperse for about 1h; place in an oil bath at 65°C, and sti...

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Abstract

The invention discloses high-barrier double-bond functionalized graphene oxide / polyethylene film and a preparation method thereof; the high-barrier double-bond functionalized graphene oxide / polyethylene film comprises double-bond functionalized graphene oxide component; the preparation method comprises the specific steps of mixing the double-bond functional group modified graphene oxide with low-density polyethylene resin at a certain ratio, and performing longitudinal stretching and then transverse stretching processes to prepare the graphene oxide / polyethylene composite film; the prepared double-bond functionalized graphene oxide / polyethylene film is simple to prepare, high in barrier property, adjustable in thickness and suitable for large-scale industrial preparation, and has a promising market prospect in food packaging, electronic encapsulating and other application fields.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and relates to a polyethylene composite film and a preparation method thereof, in particular to a high-barrier double-bond functionalized graphene oxide / polyethylene film and a preparation method thereof. Background technique [0002] Compared with metal and glass barrier materials, barrier polymer films are lightweight, easy to form and less brittle, and have become more and more important in industrial applications such as food packaging and pharmaceutical packaging, and even in the field of electronic equipment. For example, the application of organic light-emitting display packaging materials is also emerging. Among them, olefinic polymers have excellent mechanical properties and processing properties, and are cheap, and the market application prospects of olefinic polymer packaging films are very broad. However, the poor gas barrier performance has become a key problem r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K9/06C08K3/04C08K5/11C08K5/103C08K5/55B29C55/14B29L7/00
CPCB29C55/143B29L2007/00C08J5/18C08J2323/06C08J2323/08C08K3/04C08K5/103C08K5/11C08K5/55C08K9/06C08L2201/14C08L2203/16C08L2207/066C08L23/06C08L23/0815
Inventor 戴李宗曾碧榕罗宇峰袁丛辉陈国荣许一婷罗伟昂
Owner XIAMEN UNIV
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