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Modified carbon fiber reinforced resin-based composite material and preparation method thereof

A fiber-reinforced resin and composite material technology, applied in the field of modified carbon fiber-reinforced resin-based composite materials and their preparation, can solve the problems of interface coordination and insufficient strength.

Pending Publication Date: 2021-04-16
LINGNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the problems of the resin matrix and the interface between the resin matrix and the reinforcement (such as glass fiber and carbon fiber), the strength of the resin-based composite material cannot fully meet the needs of replacing metals.

Method used

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  • Modified carbon fiber reinforced resin-based composite material and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0022] like figure 1 As shown, the invention provides a kind of preparation method of modified carbon fiber reinforced resin matrix composite material, comprises the following steps:

[0023] mixing the graphene dispersion with the resin matrix to modify it to obtain a modified resin matrix;

[0024] Immerse the carbon fiber in the hydrogen peroxide solution and perform ultrasonic treatment to obtain the modified carbon fiber;

[0025] laying up the modified carbon fiber to obtain a carbon fiber fabric;

[0026] The modified resin matrix and the curing agent are mixed, and the obtained modified resin matrix-curing agent mixture and the carbon fiber fabric are alternately laminated and hot-pressed in sequence to obtain the modified carbon fiber reinforced resin matrix composite material.

[0027] In the present invention, unless otherwise specified, the required preparation materials are commercially available products well known to those skilled in the art.

[0028] In the ...

Embodiment 1

[0050] Commercially available graphene sheet and dehydrated alcohol are placed in the ball mill tank of planetary ball mill, carry out ball milling 12h, the graphene (graphene particle diameter 100nm, thickness 2~3nm) that ball mills is redispersed in dehydrated alcohol, Be made into the graphene dispersion liquid that concentration is 1mg / mL;

[0051] The graphene dispersion is added into the epoxy resin according to the ratio of 0.2% by mass fraction, then ultrasonicated for 30min, then stirred for 30min (rotational speed is 1000rpm), then vacuum-dried at 80°C for 24h to remove the epoxy resin. ethanol and air bubbles to obtain a modified resin matrix;

[0052] Use deionized water to dilute the hydrogen peroxide solution to a hydrogen peroxide solution with a mass fraction of 5%, cut the carbon fiber to 30mm (length) × 30mm (width), immerse it in the hydrogen peroxide solution, and ultrasonically treat it for 30min with a power of 150W. Ultrasonic cleaning with deionized wa...

Embodiment 2

[0058] The difference between this embodiment and embodiment 1 is that the graphene dispersion is added to the epoxy resin at a mass fraction of 0.3%.

[0059] The test was carried out according to the method of Example 1. The results showed that the modified carbon fiber reinforced resin matrix composite had a viscosity of 4138.22mPa·s, a bending strength of 737.16MPa, a tensile strength of 2.98GPa, and an interlaminar shear strength of 39.52MPa.

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Abstract

The invention provides a modified carbon fiber reinforced resin-based composite material and a preparation method thereof, and belongs to the technical field of resin-based composite materials. According to the invention, graphene is used as a modifier of the resin matrix, and the graphene has a rough and wrinkled ripple structure, so that the carbon fiber and the resin matrix structure can be interlocked, the interface characteristics of the resin matrix and the carbon fiber are improved, and the strength of the carbon fiber reinforced resin matrix composite material is further improved; ultrasonic hydrogen peroxide combined oxidation is adopted to modify the carbon fiber, so that the activity of active oxygen-containing free radical groups such as hydroxyl and carbonyl on the surface of the carbon fiber can be improved, the purpose of surface modification is achieved, the carbon fiber and a resin matrix can be bonded more tightly, and the interlayer strength of the composite material is improved; and the obtained modified carbon fiber is used as a reinforcement skeleton to endow the composite material with the characteristics of excellent fatigue resistance, impact resistance, shock absorption, corrosion resistance, heat conduction, high temperature resistance, high strength, light weight, plasticity and the like.

Description

technical field [0001] The invention relates to the technical field of resin-based composite materials, in particular to a modified carbon fiber reinforced resin-based composite material and a preparation method thereof. Background technique [0002] In the process of aviation, aerospace, and automobile industries, lightweight has become a common development direction for various industries. Especially with the call for energy saving and emission reduction, light weight means a significant reduction in energy consumption. The development direction of lightweight is nothing more than the use of lightweight materials, structural design or improvement of material processing technology. Compared with the latter two methods, it is more realistic and feasible to replace some or even all metal materials with lightweight materials. Therefore, the development of lightweight materials is the key to the further development of aerospace, automotive and other industries. [0003] Comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/06C08J5/10C08L101/00C08L63/00C08K9/02C08K7/06C08K3/04
Inventor 杨银环弓满锋马兴灶夏小群莫德云陈小军
Owner LINGNAN NORMAL UNIV
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