Continuous preparation method of graphene film prereg

A graphene film and prepreg technology, applied in the field of functional materials, can solve problems such as the inability to realize continuous preparation of graphene prepregs, and achieve the effects of high output and wide use

Active Publication Date: 2018-05-18
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its preparation method cannot realize the continuous preparation of graphene prepreg, and the resin film used is also limited to semi-cured epoxy resin film

Method used

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  • Continuous preparation method of graphene film prereg
  • Continuous preparation method of graphene film prereg
  • Continuous preparation method of graphene film prereg

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one (conduction):

[0034] Step 1, continuous preparation of graphene film:

[0035] Slurry preparation: Weigh 22.5g of graphene nanosheets, 2.5g of epoxy resin and 500ml of ethanol, after ultrasonication for 20min and stirring for 20min, mix evenly to make a graphene slurry with a concentration of 50mg / ml;

[0036] Coating film: Store the evenly mixed graphene slurry in the storage tank, place the storage tank above the release paper of the conductive film machine, and adjust the discharge switch to make the evenly mixed graphene slurry flow to the release paper superior. Turn on the transmission switch, the transmission speed is 0.1m / min, use the scraper and the baffle to scrape the graphene slurry on the release paper into a film with a thickness of 1mm and a width of 300mm. The scraper is inclined at an angle of 30o to the platform;

[0037] Film formation: The scraped graphene slurry film is forwarded to the heating zone through the release paper, and...

Embodiment 2

[0040] Embodiment two (heat conduction):

[0041] Step 1, continuous preparation of graphene film:

[0042] Slurry preparation: Weigh 18g of graphene nanosheets, 4.5g of tetrapod zinc oxide whiskers, 2g of graphene oxide, 0.5g of sodium hydroxide and 500ml of deionized water, and mix them evenly after ultrasonication for 20min and stirring for 20min to prepare Concentration is the graphene slurry of 50mg / ml;

[0043] Coating film: Store the evenly mixed graphene slurry in the storage tank, place the storage tank above the release paper of the conductive film machine, and adjust the discharge switch to make the evenly mixed graphene slurry flow to the release paper superior. Turn on the transmission switch, the transmission speed is 0.1m / min, use the scraper and the baffle to scrape the graphene slurry on the release paper into a film with a thickness of 1mm and a width of 300mm. The scraper is inclined at an angle of 30o to the platform;

[0044] Film formation: the scrape...

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Abstract

The invention relates to a continuous preparation method of a graphene film prereg, and belongs to the technical field of functional materials. The graphene film prereg takes a resin adhesive film anda graphene film as the raw materials and is prepared through the hot melting process, the resin adhesive film is coated with a resin at the breadth of 100-1400 mm at the surface density of 10-100 g / m<2> on release paper, the resin is one of epoxy resin, phenolic resin, unsaturated polyester, polyurethane, bismaleimide resin and polyimide resin; the graphene film is a film having a three-dimensional network structure or a porous structure and is prepared by taking graphene as the main material, and the material composition of the graphene film is determined according to the use function of thegraphene film prereg. The continuous preparation of the method leads to the advantage of high yield of the graphene film prereg, and the heavy demand of the practical application is well met. The most crucial point of the method is the continuous preparation of the graphene film.

Description

technical field [0001] The invention relates to a continuous preparation method of a graphene film prepreg, belonging to the technical field of functional materials. Background technique [0002] With the rapid development of science and technology, aerospace and other fields put forward higher requirements for the materials used, such as lighter weight, better performance, simpler manufacturing process and lower cost. Due to the advantages of light weight, low expansion and excellent performance, resin-based composites have gradually attracted people's attention. Since the end of the last century, resin-based composite materials have gradually replaced traditional metal materials to meet the urgent requirements of aerospace and other fields. However, the existing resin-based composite materials filled with carbon fiber and aramid fiber cannot meet the actual use requirements in some aspects, and it is necessary to develop new resin-based composite materials or modify the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/24C08L63/00C08K3/04
CPCC08J5/24C08J2363/00C08K3/04
Inventor 陈宇李军陈祥宝
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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