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A kind of graphene gas barrier laminated film and preparation method thereof

A gas barrier, graphene layer technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of complex production processes, reduced graphene barrier properties, and high cost, and improve barrier properties. , the effect of shortening the microscopic distance and reducing the probability of lateral leakage

Active Publication Date: 2019-01-29
2D CARBON CHANGZHOU TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the current graphene growth and transfer technology, there will be many grain boundaries during the graphene growth process, and defects, wrinkles or damage will appear during the substrate transfer process. Therefore, at the grain boundaries, defects and damage of graphene, It provides a path for the free passage of gas, which greatly reduces the barrier performance of graphene. In the prior art, in order to obtain higher barrier performance, the prepared graphene barrier film needs to transfer graphene more than ten times, and the graphite transferred each time Graphene is in 1-5 layers, its production process is complicated and the cost is high

Method used

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  • A kind of graphene gas barrier laminated film and preparation method thereof
  • A kind of graphene gas barrier laminated film and preparation method thereof
  • A kind of graphene gas barrier laminated film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The graphene sample is grown by CVD method, and the epoxy resin is sprayed on one side of the graphene sample. The spraying conditions are that the coating pressure is 1kg, the coating thickness is 15μm, and then the epoxy resin is sprayed by FeCl 3 The solution corrodes the copper on the graphene sample, and the other side of the graphene sample is coated with polyvinyl alcohol by spin coating to obtain a graphene gas barrier laminated film, wherein the condition of spin coating is that the coating thickness is 15 μm. The structure of the graphene gas barrier laminated film 100 obtained in this embodiment is as follows: figure 1 As shown, from top to bottom are hydrogen bond donor organic layer 203 , graphene layer 202 and hydrogen bond acceptor organic layer 201 .

Embodiment 2

[0035] Graphene samples are grown by CVD, and vinyl acetate is sprayed on one side of the graphene samples. The spraying conditions are 1 kg of smearing pressure, 188 μm of coating thickness, and then pass FeCl 3 The solution corrodes the copper on the graphene sample, and the mixture of polyvinyl alcohol and polyvinylidene chloride is applied on the other side of the graphene sample by spin coating to obtain a graphene gas barrier laminated film, wherein the condition of spin coating is The thickness of the coating is 188 μm, which is the same as the structure of the graphene gas barrier laminated film obtained in Example 1.

Embodiment 3

[0037] Adopt the CVD method to grow the graphene sample, adopt the mode of scraping coating on the graphene sample side to smear polyurethane, the condition of scraping coating is to smear pressure 5kg, coating thickness is 100 μ m, pass (NH 4 ) 2 S 2 o 8 The solution corrodes the copper on the graphene, transfers it to the polyethylene film through polyurethane, and applies ethylene-vinyl alcohol copolymer on the other side of the graphene sample by dip coating to obtain a graphene gas barrier laminated film. The coating conditions were such that the coating thickness was 100 µm. The present embodiment obtains the structure of the graphene gas barrier laminated film 100 as figure 2 As shown, from top to bottom are the hydrogen bond donor organic layer 203 , the graphene layer 202 , the hydrogen bond acceptor organic layer 201 and the base layer 110 .

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Abstract

The invention discloses a graphene gas barrier laminated film and a preparation method thereof, and belongs to the field of polymer composite materials, the graphene gas barrier laminated film includes at least one stacked unit which is stacked up, each stacked unit includes a hydrogen bond acceptor organic layer, a graphene layer and a hydrogen bond donor organic layer which are sequentially adjacently arranged, hydrogen bonds are formed between the hydrogen bond acceptor organic layer and the hydrogen bond donor organic layer, and the hydrogen bond acceptor organic layers and the hydrogen bond donor organic layers of adjacent stacked units are adjacent. The preparation method is as follows: the hydrogen bond acceptor organic layer and the hydrogen bond donor organic layer are respectively arranged on the surface of opposite two sides of the graphene layer to form the stacked unit, the at least one stacked unit is stacked up, and the hydrogen bond acceptor organic layers and the hydrogen bond donor organic layers of adjacent stacked units are adjacent. The graphene gas barrier laminated film has good barrier property and is simple to prepare.

Description

technical field [0001] The invention relates to the field of polymer composite materials, and in particular to a graphene gas barrier laminated film and a preparation method thereof. Background technique [0002] Barrier polymers have become increasingly important in polymer food packaging, pharmaceutical packaging, industrial applications, and even in electronic devices, such as encapsulation materials for organic light-emitting displays (OLEDs). [0003] Graphene is a two-dimensional carbon material composed of a layer of carbon atoms closely packed periodically in a benzene ring structure (that is, a hexagonal honeycomb structure). Its thickness is 0.335nm, which is only the thickness of a single layer of carbon atoms. Due to the special structure of graphene, it has excellent barrier properties, including helium with the smallest molecular diameter. Therefore, graphene has potential wide applications in OLED, flexible solar cells, military industry and other fields. How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B27/06
CPCB32B9/00B32B27/06
Inventor 金虎马丽君宋琪彭鹏
Owner 2D CARBON CHANGZHOU TECH INC