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Carbon fiber composite material interlayer and method for manufacturing vehicle body by adopting interlayer

A composite material and carbon fiber technology, applied in the field of car body manufacturing, can solve problems such as difficulty in adding car bodies, insufficient mechanical properties, and insufficient strength, and achieve the effects of improving compression resistance, improving mechanical properties, and ensuring fluidity

Inactive Publication Date: 2020-05-08
JINCHENG COLLEGE NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The low moment of inertia of the traditional carbon fiber composite material section leads to insufficient strength, and it is easy to collapse and deform the carbon fiber sandwich panel, making it difficult to install it on the body; at the same time, the carbon fiber composite interlayer is not pressed properly due to process problems when the above materials are manufactured , reflected in the quality of the final formed car body, and the mechanical properties are not enough

Method used

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  • Carbon fiber composite material interlayer and method for manufacturing vehicle body by adopting interlayer
  • Carbon fiber composite material interlayer and method for manufacturing vehicle body by adopting interlayer
  • Carbon fiber composite material interlayer and method for manufacturing vehicle body by adopting interlayer

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Embodiment 1

[0034] Such as figure 1 with figure 2 , the present invention utilizes carbon fiber composite sandwich material to manufacture vehicle body 4, and wherein carbon fiber composite sandwich material structure comprises upper surface layer 3, and wherein upper surface layer 3 has glass fiber layer and carbon fiber layer respectively, the PVC foam board 2a with circular through-hole as middle Layer 2, the upper surface layer 3 also has a glass fiber layer and a carbon fiber layer, and thermoplastic resin is contained between the upper surface layer 3, the middle layer 2, the lower surface layer 1 and each prepreg. The thermoplastic resin is epoxy resin glue, which is cured in the circular through hole 21 of the PVC foam board 2a to act as a reinforcing rib, and serves the purpose of sticking and pressing between the PVC foam board 2a and the prepregs on both sides , It also serves the purpose of bonding and laminating between layers of prepreg.

[0035] It should be noted that, ...

Embodiment 2

[0045] like image 3 and Figure 4 , the vehicle body 4 proposed by the present invention can directly manufacture a load-bearing body 4, breaking the inherent thinking of designing a frame for a traditional pure carbon fiber structure vehicle. The reason is that the vehicle body 4 made of this carbon fiber sandwich material has better mechanical properties , higher strength and rigidity, experiments have proved that the body 4 made of carbon fiber sandwich material is placed flat on the ground, and there will be no problem for 2 people to stand directly on the body 4, and even 3 people can stand on the strongest part of the body 4 The body 4 will not be deformed, all thanks to the reinforcing ribs formed in the hole by epoxy resin, the section moment of inertia of the PVC foam itself, and the high strength and light weight of the carbon fiber material.

[0046] like image 3 , the streamlined body 4 will generally greatly reduce the drag coefficient of the vehicle. Generall...

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Abstract

The invention relates to a carbon fiber composite material interlayer and a method for manufacturing a vehicle body by adopting the same, a circular through hole in a middle layer can be filled with flowing epoxy resin glue, and when the epoxy resin glue is completely cured and supports an upper surface layer and a lower surface layer, the effect of a reinforcing rib is achieved, and the pressureresistance of the whole interlayer is improved. Thermoplastic resin is arranged among the upper surface layer, the middle layer, the lower surface layer and prepregs, and the thermoplastic resin achieves the purposes of adhering and pressing between a PVC foam board and the prepregs on the two sides. The sectional moment of the PVC foam board and the reinforcing rib in the PVC foam board act, so that the PVC foam board has ideal mechanical properties. In the vacuumizing process, vacuumizing is performed; the whole vehicle body is integrally heated for more than 120 minutes at the temperature of 60 DEG C, the flowability of the epoxy resin glue is ensured, each corner of the prepregs and the PVC foam board can be filled with the epoxy resin glue, the purpose of complete adhesion is achieved, the vehicle body is prepared through a heating and pressurizing method, the carbon fiber composite interlayer material is compacted, and the mechanical property is improved.

Description

technical field [0001] The invention relates to the field of vehicle body manufacturing, in particular to a carbon fiber composite material interlayer and a method for manufacturing a vehicle body using the interlayer. Background technique [0002] With the improvement of the quality of life, cars have become the most used means of transportation for people's daily travel, and the pursuit of more economical and energy-saving cars has always been the goal of people. The body of a traditional car is generally made of steel plate or aluminum alloy, and carbon fiber is a material with lower density, higher strength and greater rigidity than the above materials, which will make the vehicle lighter and safer when used as a body material. More energy efficient. [0003] The low moment of inertia of the traditional carbon fiber composite material section leads to insufficient strength, and it is easy to collapse and deform the carbon fiber sandwich panel, making it difficult to ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B17/04B32B17/06B32B3/24B32B33/00B29C70/70B29L31/30
CPCB29C70/683B29C70/70B29L2031/3055B32B5/02B32B5/18B32B7/12B32B9/046B32B17/04B32B17/066B32B2262/101B32B2262/106B32B2266/0235B32B2605/00
Inventor 黄继刚王文涛徐田华李琳吴荣燎周敏
Owner JINCHENG COLLEGE NANJING UNIV OF AERONAUTICS & ASTRONAUTICS