Composite material containing graphene/resin/carbon fiber modified electric heating layer, its preparation method and application

A technology of fiber composite materials and composite materials, applied in the field of electrothermal deicing, can solve the problems of inability to ensure the uniform combination of graphene and resin, reduce the electrical conductivity and thermal conductivity of graphene paper, and be unfavorable for the weight loss of aviation structural materials, etc., to achieve Ease of continuous automatic production, avoiding the introduction of defects, and the effect of free control of process parameters

Active Publication Date: 2020-09-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The Chinese patent application with application number 201710173592.0 discloses "an anti-icing / deicing composite multi-layer structure". Composition, the electric heating layer is a mixture of copper-manganese alloy sheet and insulating medium, and the composite material layer is a sandwich material of carbon fiber / glass fiber; the disadvantage is that the metal material used for the heating sheet increases the weight of the composite material, which is not conducive to the "reduction" of aeronautical structural materials. "heavy" target
New carbon materials have been used in electric heating elements as metal substitutes. The Chinese patent application with application number 201810401741.9 discloses "composite materials containing electric heating deicing layer and its preparation method". Graphene paper is used as electric heating elements to ensure electric heating. The weight of the structure can be reduced under certain conditions, and the designability of the material can be increased. However, there are no active carbon atoms or groups on the surface of the graphene paper, and it cannot be effectively bonded to the glass fiber / carbon fiber prepreg or adhesive; and the graphene paper is printed with Although multiple uniform through holes can promote the interface mechanical interlocking to a certain extent, it will also reduce the electrical and thermal conductivity of the graphene paper and affect the electrothermal performance of the material.
[0004] There are also scholars who use nano-conductive carbon materials to modify carbon fibers to improve the conductivity of materials. The Chinese patent application with application number 201810024685.1 discloses "a continuous preparation method for graphene prepregs". First, prepare multi-component graphene films and Resin film, and then processed by hot melt and pressure roller to obtain graphene prepreg, but this process cannot ensure the uniform combination of graphene and resin, and the mechanical properties are unstable, which limits its application under complex load conditions; patent CN103614902B discloses "A preparation method of graphene / carbon fiber composite material", by adding organic ammonium salts containing aromatic groups to the graphene dispersion liquid to make graphene positively charged, electrophoretic deposition on the surface of carbon fiber, but the disadvantage is that additives need to be introduced , the process is too complex

Method used

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  • Composite material containing graphene/resin/carbon fiber modified electric heating layer, its preparation method and application
  • Composite material containing graphene/resin/carbon fiber modified electric heating layer, its preparation method and application
  • Composite material containing graphene/resin/carbon fiber modified electric heating layer, its preparation method and application

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Effect test

Embodiment 1

[0044] The steps of preparing polyetheretherketone-based fiber-metal hybrid composites containing modified electric heating layers are as follows:

[0045] (1) Mix the graphene powder into the polyether ether ketone resin powder, the mass fraction of the graphene powder is 1w%, mechanically stir it in advance for 30 minutes and then dry it in an oven for 6 hours to completely remove moisture, then place it in a planetary ball mill at a speed of 300r / min Continue ball milling for 4 hours to mix the powder evenly, sieve out the mixed powder, pack it into bags, and put it in a vacuum drying pot for later use.

[0046] (2) Mix the graphene oxide powder and deionized water to a concentration of 0.5 g / L, and then ultrasonically disperse for 60 minutes to obtain a graphene oxide dispersion, which is sealed and placed in a cool and dry place for later use.

[0047] (3) Evenly coat conductive silver glue with a width of 10mm on both sides of the 100mm edge of the carbon fiber cloth wit...

Embodiment 2

[0052] Prepare the epoxy resin-based aluminum alloy honeycomb sandwich composite material containing the modified electric heating layer, the steps are:

[0053] (1) the epoxy resin of certain quality is dissolved and be dissolved in chloroform solvent with mass fraction 10w%, obtain epoxy resin solution after fully stirring, account for the mass fraction of resin mass by graphene powder be 1w%, graphene powder Add it into the obtained epoxy resin solution, carry out ultrasonic dispersion immediately until the color phase of the dispersion liquid is uniform, and seal it for later use.

[0054] (2) Mix the graphene oxide powder and deionized water to a concentration of 2 g / L, and ultrasonically disperse for 60 minutes to obtain a graphene oxide dispersion, which is sealed and placed in a cool and dry place for later use.

[0055] (3) Evenly coat conductive silver glue with a width of 10mm on both sides of the 100mm edge of the carbon fiber cloth with a size of 110mm×100mm (long...

Embodiment 3

[0060] Prepare the bismaleimide resin-based composite material containing the modified electric heating layer, the steps are:

[0061] (1) Dissolving a certain amount of bismaleimide resin is dissolved in 1,2-dichloroethane solvent solvent with a mass fraction of 10w%, and after fully stirring, a bismaleimide resin solution is obtained, which is taken according to the resin quality Graphene powder with a mass fraction of 1w% was added to the obtained bismaleimide solution, and ultrasonically dispersed immediately until the dispersion was uniform in color, then sealed and ready for use.

[0062] (2) Mix the graphene oxide powder and deionized water to a concentration of 2 g / L, and perform an ultrasonic dispersion treatment for 60 minutes to obtain a graphene oxide dispersion, which is sealed and placed in a cool and dry place for later use.

[0063] (3) Evenly coat conductive silver glue with a width of 10mm on both sides of the 100mm edge of the carbon fiber cloth with a size ...

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Abstract

The invention discloses a composite material containing a graphene / resin / carbon fiber modified electric heating layer and preparation and application methods thereof. The preparation method comprisesintroducing the conductive filler of graphene into resin, electrophoresis-deposing and grafting graphene oxide onto the surface of carbon fiber, uniformly laying a nanocarbon material-modified resin layer and carbon fiber woven fabric to obtain the graphene / resin / carbon fiber modified electric heating layer, and then compounding the graphene / resin / carbon fiber modified electric heating layer witha surface layer and a composite material layer to obtain the composite material containing the graphene / resin / carbon fiber modified electric heating layer. The prepared composite material containing the graphene / resin / carbon fiber modified electric heating layer achieves excellent electric heating performance and saves additional electric heating sheets; the introduced nanocarbon materials can enhance the in-plane rigidity of the electric heating layer to improve the integral strength and rigidity of a laminated sheet structure and significantly improve the mechanical performance of compositelaminated sheets. Therefore, the composite material containing the graphene / resin / carbon modified fiber electric heating layer can be applied to electric deicing of frozen parts of various products such as aircraft skins, wind turbine blades and vehicle bodies and achieve flexible design and simple implementation of industrial and continuous automatic production.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a composite material containing graphene / resin / carbon fiber modified electric heating layer, a preparation method thereof, and electric heating deicing for icing parts. Background technique [0002] When an aircraft flies in a weather environment below the freezing point, the skin, wings, etc. that are in direct contact with the cold air will freeze. This phenomenon has a serious impact on the composite material itself and electronic components such as sensors on the fuselage surface. , Severe icing can even change the aerodynamic shape of the aircraft, and there is a potential danger of flight accidents caused by control instability. The composite materials used for aircraft are required to have the ability to effectively remove the surface ice. At present, the deicing methods of composite materials mainly include mechanical deicing and electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/00B32B27/20B32B9/00B32B9/04B32B15/08B32B27/38B32B15/20B32B15/092B32B3/12B32B27/28B32B27/08B32B27/06B32B37/06B32B37/10C08L61/16C08K3/04C08K7/06C08K7/14C08L63/00C08L79/08B64C1/12B64D15/12
Inventor 潘蕾刘子恒马文亮吕云飞
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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