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Metal and carbon fiber composite material as well as preparation method and application thereof

A technology of metal materials and composite materials, which is applied in the field of metal and carbon fiber composite materials and their preparation, and can solve the problems of low collision energy absorption capacity and poor toughness

Inactive Publication Date: 2020-04-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN108943548 A discloses a carbon fiber composite material manufacturing process. A carbon fiber composite material is obtained through the carbon fiber composite material manufacturing process. Although the specific strength and specific modulus of the carbon fiber composite material are high, the toughness is poor and the impact energy absorption capacity is low Low, pure carbon fiber materials are difficult to meet the crash requirements of the automotive industry

Method used

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  • Metal and carbon fiber composite material as well as preparation method and application thereof
  • Metal and carbon fiber composite material as well as preparation method and application thereof
  • Metal and carbon fiber composite material as well as preparation method and application thereof

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preparation example Construction

[0026] The invention provides a method for preparing a metal and carbon fiber composite material, comprising the following steps:

[0027] (1) Carry out surface modification treatment to metal material, obtain modified metal material, and described surface modification treatment is to smear coupling agent on the surface of metal material;

[0028] (2) providing a carbon fiber layer, no bubbles visible to the naked eye in the carbon fiber layer;

[0029] (3) laying the carbon fiber layer described in step (2) on the modified surface of the modified metal material described in step (1), and performing pressure curing treatment to obtain a metal and carbon fiber composite material;

[0030] Step (1) and step (2) are not limited by time order;

[0031] The carbon fiber layer in the step (2) includes carbon fiber and resin.

[0032] In the invention, the metal material is subjected to surface modification treatment to obtain the modified metal material, and the surface modificati...

Embodiment 1

[0047] 7075 aluminum alloy is selected as the metal material: put the 7075 aluminum alloy in a resistance heating furnace and heat it to 475°C, keep it warm for 30 minutes to obtain a heated aluminum alloy, and place the heated aluminum alloy under a hydraulic press for preforming to obtain a U-shaped aluminum alloy. The forming pressure is 30t, and the time is 10s. The U-shaped aluminum alloy was taken out and placed in an aging furnace, kept at 120° C. for 24 hours, and then cooled to room temperature with the furnace to obtain an aging-treated U-shaped aluminum alloy. Use 600-mesh and 1000-mesh sandpaper to polish the surface of the aging-treated U-shaped aluminum alloy, then clean the aluminum alloy with acetone to remove the oil on the surface of the aluminum alloy, and apply silane coupling agent KH-560 on the surface of the aluminum alloy after drying to obtain modification aluminum alloy. The carbon fiber prepreg obtained by impregnating Toray’s 3K plain carbon fiber ...

Embodiment 2

[0051] 22MnB5 steel is selected as the metal material: put the 22MnB5 steel in a resistance heating furnace and heat it to 930°C, keep it warm for 30 minutes to obtain heated 22MnB5, place the heated aluminum alloy under a hydraulic press for preforming to obtain U-shaped 22MnB5, and the preforming pressure is 30t, the time is 10s. After polishing the surface of U-shaped 22MnB5 with 600 mesh and 1000 mesh sandpaper, wash 22MnB5 with acetone to remove the oil on the surface of 22MnB5, and apply silane coupling agent KH-560 on the surface of 22MnB5 after drying to obtain modified 22MnB5. The carbon fiber prepreg obtained by impregnating Toray’s 3K plain carbon fiber in E51 epoxy resin was hand laid up to obtain a carbon fiber layer, and the number of carbon fiber layers was 6 layers. Lay the carbon fiber layer on the inside of the modified 22MnB5, cut the edge so that the modified 22MnB5 is flush with the surface of the carbon fiber layer, coat the aluminum alloy release agent o...

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Abstract

The invention provides a preparation method of a metal-carbon fiber composite material, which comprises the following steps: smearing a coupling agent on the surface of a metal material to perform surface modification treatment on the metal material to obtain a modified metal material; providing a carbon fiber layer without macroscopic bubbles; laying the carbon fiber layer on the surface of the modified metal material, and carrying out pressurization curing treatment to obtain a metal and carbon fiber composite material. The carbon fiber layer includes carbon fibers and a resin. The metal material and the fiber are combined together, so that the strength and the toughness of the composite material are guaranteed, and the weight of the material is reduced. Results of the embodiment show that compared with a conventional single metal material, the impact strength of the metal and carbon fiber composite material obtained through the preparation method is improved by 5%-40%, the toughnessis improved by 20%-46%, and the collision performance is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a metal and carbon fiber composite material and a preparation method and application thereof. Background technique [0002] The lightweight of the car is to reduce the overall quality of the car as much as possible under the premise of ensuring the strength and safety performance of the car, so as to improve the power of the car, reduce fuel consumption, and reduce exhaust pollution. As "energy saving and environmental protection" has increasingly become a topic of widespread concern, lightweight is also widely used in the field of ordinary cars. It can improve handling and also have excellent fuel-saving performance. The fuel consumption of a car mainly depends on the engine's exhaust. On the premise of keeping the overall quality, performance and cost of the car unchanged or even optimized, reducing the weight of the car itself can also increase the outp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B15/18B32B15/20B32B15/00B32B27/04B32B27/38B32B37/10
CPCB32B5/02B32B5/26B32B15/00B32B15/14B32B15/18B32B15/20B32B37/10B32B2260/021B32B2260/046B32B2262/106
Inventor 张志强于士翔崔跃杰闫旭王太吉
Owner JILIN UNIV