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Graphene polymer composite film and modified resin-based composite material and preparation method thereof

A composite material and modified resin technology, applied in chemical instruments and methods, synthetic resin layered products, single-component synthetic polymer rayon, etc. The effect of improved performance and improved compressive strength

Inactive Publication Date: 2021-03-12
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proposed method needs to improve the production steps and equipment of fiber preforms and prepregs, which is not easy to popularize and utilize

Method used

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  • Graphene polymer composite film and modified resin-based composite material and preparation method thereof
  • Graphene polymer composite film and modified resin-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Disperse 0.06g graphene in 50ml N,N-dimethylformamide, disperse 1g polyethersulfone resin in 10ml N,N-dimethylformamide, mix and stir evenly, and make graphene / Polyethersulfone mixed solution; 2g of polyethersulfone resin is dissolved in 15ml of N,N-dimethylformamide to prepare a polyethersulfone solution. The solution is formed into a film by conjugated electrospinning through an electrospinning machine. The spinning voltage of the graphene / polyethersulfone mixed solution is 20kV, the working distance is 20cm, and the liquid feeding speed is 1ml / h; the spinning of the polyethersulfone solution The wire voltage is 20kV, the working distance is 20cm, and the liquid feeding speed is 0.25ml / h; after spinning, the organic solvent is volatilized in hot air at 80°C to form a graphene / polyethersulfone composite membrane. The graphene / polyethersulfone composite membrane toughened 5228A / T300-40B epoxy resin-based carbon fiber composite material was obtained by hot pressing mold...

Embodiment 2

[0028]Disperse 1g of graphene oxide in 10ml of ethylene dichloride, dissolve 5g of polyethersulfone resin in 40ml of ethylene dichloride, mix and stir evenly, and prepare a graphene / polysulfone mixed solution. The mixed solution was spun into a film through an electrospinning machine, the spinning voltage was 12kV, the working distance was 15cm, and the liquid feeding speed was 1.5ml / h; after the spinning was completed, the organic solvent was volatilized in hot air at 60°C, A graphene-polyethersulfone composite membrane is formed. A graphene-polyethersulfone composite film toughened 5228A / T300-40B epoxy resin-based carbon fiber composite material was prepared by vacuum bag molding process.

[0029] Compared with the 5228A / T300-40B epoxy resin-based composite material, the post-impact compressive strength of the composite material prepared in Example 2 was increased from 234MPa to 298MPa.

Embodiment 3

[0031] Disperse 0.5g of graphene oxide in 90ml of tetrahydrofuran, dissolve 1g of phenolphthalein-modified polyetherketone in 10ml of tetrahydrofuran, mix and stir evenly, and make a mixed solution of graphene / phenolphthalein-modified polyetherketone; 9g of phenolphthalein-modified polyetherketone Dissolve in 100ml tetrahydrofuran to make a mixed solution of phenolphthalein-modified polyetherketone. The solution was conjugated and spun into a membrane by an electrospinning machine. The spinning voltage of the graphene / phenolphthalein-modified polyetherketone mixed solution is 10kV, the working distance is 10cm, and the liquid feeding speed is 0.2ml / h; the spinning voltage of the phenolphthalein-modified polyetherketone mixed solution is 15kV, and the working distance is 15cm, the liquid feeding speed is 0.2ml / h. The organic solvent was volatilized and removed in a vacuum environment at 50°C to form a graphene oxide / phenolphthalein-modified polyetherketone composite film. Gra...

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Abstract

The invention relates to a graphene polymer composite film and a modified resin-based composite material and a preparation method thereof, and belongs to the field of high-performance composite materials. The invention provides the graphene polymer composite film and the modified resin-based composite material thereof. The modified resin-based composite material is composed of a graphene material,a thermoplastic polymer and a resin-based composite material, wherein the graphene material and the thermoplastic polymer exist between layers of the resin-based composite material in the form of a graphene thermoplastic polymer composite film with a microcosmic porous structure. The invention provides the preparation method of the modified resin-based composite material of the graphene polymer composite film. The preparation method comprises the following steps of preparing the graphene polymer composite film from the graphene material and the thermoplastic polymer, and further preparing themodified resin-based composite material. The porous structure of the graphene polymer composite film is beneficial to mutual combination with resin in the forming process, the interlayer uniformity and heat resistance of the composite material are improved, the mechanical property of the composite material is effectively improved, and the graphene polymer composite film has relatively high practical application value.

Description

technical field [0001] The invention relates to a modified high-performance composite material and a preparation method, in particular to a graphene / polymer composite film, a modified resin-based composite material and a preparation method thereof. Background technique [0002] Effectively improving the impact damage resistance of resin-based composite materials, that is, to achieve high toughness of composite materials, is the main research direction of high-performance composite materials. Existing methods for toughening composite materials mainly use 1) rubber, 2) thermoplastic polymer, 3) rigid particles and resin matrix to be blended and introduced into the composite material to achieve the toughening effect. At present, there is another method of interlayer toughening, that is, laying thermoplastic polymer powder, dense thermoplastic polymer film or carbon nanotube film between layers of composite materials to improve toughness. Although the thermoplastic polymer film...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10B32B9/00B32B9/04B32B27/02B32B27/12B32B27/20B32B27/28B32B27/38B32B5/08B32B37/06B32B37/10D01D5/00D04H1/728
CPCD01F6/94D01F1/10B32B5/022B32B5/08B32B27/12B32B27/20B32B27/38B32B37/06B32B37/10D01D5/0015D04H1/728B32B2250/40B32B2262/02B32B2262/106B32B2262/14B32B2307/306
Inventor 杨程田俊鹏郝思嘉任志东邢悦许婧
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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