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A kind of graphene composite film material and preparation method thereof

A graphene composite and thin-film material technology, applied in chemical instruments and methods, adhesive types, synthetic resin layered products, etc. Barrier, the effect of excellent barrier properties

Active Publication Date: 2016-05-04
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above disclosed method covers a variety of polymers and covers a variety of GO or RGO / polymer composite molding technologies, but the water oxygen transmission rate of the prepared composite material is about 10 -1 ~10 -2 order of magnitude, which is far from meeting the requirements of OLED encapsulation materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of light-curing adhesive: Add 1 g of maleic anhydride, 3 g of hydroxyethyl methacrylate, 0.5 g of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 2 -Hydroxy-2-methyl-1-phenyl-1-acetone 1g, norbornyl methacrylate 10g, lauryl methacrylate 14.5g, stir to dissolve the solid and then add polyurethane acrylate resin (soft segment is poly Butadiene) 70g, stir well and remove air bubbles for later use;

[0035] (2) Large-area single-layer graphene grown by vapor deposition method, take one layer for later use;

[0036] (3) Peel off the protective film on the upper and lower surfaces of the single-layer graphene layer, apply a photocurable adhesive, and press the activated polymer transparent film on the coated photocurable adhesive. On the mixture, after ensuring that there are no bubbles, cure the adhesive layer. The polymer transparent film used is a transparent PP film. The curing conditions for the light-curing adhesive are 1000W medium-pressure mercury lam...

Embodiment 2

[0039] (1) Preparation of light-curing adhesive: Add 3.5g maleic anhydride, 2g hydroxyethyl acrylate, 3g hydroxyethyl methacrylate, 2,4,6-trimethylbenzoyl-diphenyl to a 500mL container in sequence 0.5g of phosphorus oxide, 1g of 2-hydroxy-2-cyclohexyl-1-phenyl-1-acetone, 8g of phenoxyethyl acrylate, 22g of isodecyl acrylate, stir to dissolve the solid, and then add polyurethane acrylate resin (soft segment is hydrogenated polybutadiene) 60g, stir well and remove air bubbles for later use;

[0040] (2) Large-area single-layer graphene grown by vapor deposition method, take two layers for later use;

[0041] (3) First remove the protective film on one side of the graphene layer, apply a light-curing adhesive, then remove the protective film on the other side of the graphene layer, and press this side tightly against the coating On the light-curing adhesive, after ensuring that there are no bubbles, cure the adhesive layer. The curing conditions of the light-curing adhesive are ...

Embodiment 3

[0045] (1) Preparation of light-curing adhesive: Add 0.5 g of maleic anhydride, 3 g of hydroxyethyl methacrylate, 1 g of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 2 -Hydroxy-2-cyclohexyl-1-phenyl-1-propanone 1g, phenoxyethyl acrylate 18g, lauryl methacrylate 26.5g, 2(2-ethoxyethoxy)ethyl acrylate 5g , stir to dissolve the solid, then add 45g of polyurethane acrylate resin (the soft segment is polyisoprene and polybutadiene), stir well and remove the air bubbles for later use;

[0046] (2) Large-area single-layer graphene grown by vapor deposition method, take three layers for later use;

[0047] (3) First remove the protective film on one side of the graphene layer, apply a light-curing adhesive, then remove the protective film on the other side of the graphene layer, and press this side tightly against the coating On the light-curing adhesive, after ensuring no bubbles, cure the adhesive layer, wherein the curing conditions of the light-curing adhesive are 1000W medium...

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Abstract

The invention relates to a graphene composite thin film material and a preparation method thereof. The graphene composite thin film material is structurally characterized in that at least one graphene layer is arranged between two high molecular transparent thin films, and the high molecular transparent thin films are connected with the graphene layers and the adjacent graphene layers are connected with each other through a curing adhesive or a thermocuring adhesive. According to the invention, the defects on performance of the prepared graphene barrier composite materials are overcome in the prior art, and a nano composite thin film with high barrier property and high transmittance is prepared. The graphene high molecular composite thin film material prepared by the invention achieves both flexibility and high transparency, and the transmittance in a visible light area reaches up to over 85%. In addition, the composite thin film has excellent barrier property on water vapor and oxygen, solves the problem that water and oxygen barrier property of the prepared graphene / high molecular composite material in the prior art is poor, can satisfy the application demands on OLED (Organic Light Emitting Diode) apparatus encapsulation, medical and food packaging and the like, and has huge practical and promotional values.

Description

technical field [0001] The invention relates to a graphene composite film material and a preparation method thereof, belonging to the technical field of design and preparation of composite materials. Background technique [0002] Organic light emitting diodes (organic light emitting diode, OLED) have the advantages of self-illumination, wide viewing angle, ultra-fast response, high efficiency, low voltage, ultra-thin and large-scale devices, and are considered to be a promising next-generation display and lighting technology. Flexibility is the development direction of future electronic devices, and it is also a unique advantage of OLED. The organic material used in OLED itself has good flexibility, and it can be fabricated on an impact-resistant, light, thin and cheap flexible transparent plastic substrate to realize flexible device manufacturing. [0003] Transparent plastic films that can be used as flexible substrates, such as polyethylene (PE), polyethylene terephthala...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B9/04B32B7/12C09J175/14C09J4/02C09J4/06
Inventor 姜浩李朝龙史浩飞汤林龙高天鹏杜春雷
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI