Sandwich type carbon fiber motor vehicle box shell

Abstract

The utility model discloses an interlayer type carbon fiber motor vehicle box shell. The interlayer type carbon fiber motor vehicle box shell comprises a foaming material layer, a plurality of layers of carbon fiber cloth are arranged on the left side and the right side of the foaming material layer, the carbon fiber cloth and the foaming material layer have a motor vehicle box shell model, and resin and curing agents are arranged between the carbon fiber cloth and the foaming material layer and between the carbon fiber cloth of the adjacent layer. The utility model solves the problem that in the prior art, the pursuit of people on the light weight of the casing of the motor vehicle box body cannot be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to carbon fiber material technical field especially relates to a sandwich formula carbon fiber motor vehicle box body shell. BACKGROUND

[0002] Because carbon fiber composite material has light weight, high strength, corrosion resistance, impact resistance and other excellent performance, currently there are manufacturers to apply carbon fiber composite material to the production and manufacture of motor vehicle box body shell to meet people's pursuit of lightweight motor vehicle box body shell. In the production process, generally adopt multilayer carbon fiber cloth (fiber length is greater than 20mm) to match resin and curing agent, and integrally form in the mold after heating and pressurizing. The weight of the motor vehicle box body shell has been greatly reduced through the above method, however, people's pursuit of lightweight motor vehicle box body shell still cannot be met. SUMMARY

[0003] The utility model discloses a sandwich formula carbon fiber motor vehicle box body shell can further meet people's pursuit of lightweight motor vehicle box body shell in view of the deficiency of prior art.

[0004] To realize the above-mentioned purpose, the utility model discloses a sandwich formula carbon fiber motor vehicle box body shell adopts the technical scheme of:

[0005] A sandwich formula carbon fiber motor vehicle box body shell, including foamed material layer, the left and right sides of foamed material layer are provided with several layers of carbon fiber cloth, carbon fiber cloth and foamed material layer have motor vehicle box body shell modeling, and resin and curing agent are arranged between carbon fiber cloth and foamed material layer and the carbon fiber cloth of adjacent layer.

[0006] Preferably, the number of layers of carbon fiber cloth on the left and right sides of the foamed material layer is equal.

[0007] Preferably, the number of layers of carbon fiber cloth on the left and right sides of the foamed material layer is two.

[0008] Preferably, the number of layers of carbon fiber cloth on the left and right sides of the foamed material layer is three.

[0009] Preferably, the thickness of the carbon fiber cloth is 0.05-0.5mm, and the thickness of the foamed material layer is 0.2-80mm.

[0010] Preferably, the patterns of the carbon fiber cloth of adjacent layers are interlaced.

[0011] Preferably, the foamed material layer is a polymethacrylimide layer.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. Because foamed materials have good mechanical properties, heat distortion temperature and chemical stability, and their density is much lower than that of carbon fiber composite materials, placing a layer of foamed material in the middle as a sandwich can further reduce the weight of the vehicle body shell and meet people's pursuit of lightweight vehicle body shells.

[0014] 2. The carbon fiber cloth and foam material layers are pre-formed into the shape of the vehicle body shell, which facilitates the pressing of the finished product.

[0015] 3. The number of carbon fiber cloth layers on both sides of the foam material layer is equal to ensure that the foam material layer is under balanced stress during pressing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the sandwich-type carbon fiber vehicle body shell in Embodiment 1;

[0017] Figure 2 This is a schematic diagram of the structure of the sandwich-type carbon fiber vehicle body shell in Embodiment 2.

[0018] The structure consists of 1 foam material layer and 2 carbon fiber cloth. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0020] Example 1, as Figure 1 As shown, a sandwich-type carbon fiber vehicle body shell includes a foam material layer 1, which is a polymethacrylamide layer with a thickness of 0.4 mm. Two layers of carbon fiber cloth 2 are arranged on each of the left and right sides of the foam material layer. The carbon fiber cloth and the foam material layer have the shape of a vehicle body shell, which facilitates the pressing of finished products. The carbon fiber cloth has a thickness of 0.15 mm. The texture of the adjacent carbon fiber cloth layers is interlaced, which can improve the strength of the connection between the carbon fiber cloths. The number of carbon fiber cloth layers on the left and right sides is the same to ensure that the foam material layer is under balanced stress during pressing. Resin and curing agent are applied between the carbon fiber cloth and the foam material layer and the adjacent carbon fiber cloth layers to increase the strength of the connection between the carbon fiber cloth and the foam material layer and the adjacent carbon fiber cloth layers.

[0021] Example 2, as Figure 2As shown, a sandwich type carbon fiber motor vehicle body shell includes a foamed material layer 1, which is a polymethacrylimide layer with a thickness of 60 mm, three layers of carbon fiber cloth 2 are arranged on the left and right sides of the foamed material layer, the carbon fiber cloth and the foamed material layer have a motor vehicle body shell shape, facilitating product pressing, the thickness of the carbon fiber cloth is 0.5 mm, the patterns of the carbon fiber cloths of adjacent layers are interlaced with each other, the firmness of the connection between the carbon fiber cloths can be improved, the number of layers of the carbon fiber cloths on the left and right sides is the same, the stress balance of the foamed material layer during pressing is ensured, and a resin and a curing agent are brushed between the carbon fiber cloth, the foamed material layer and the carbon fiber cloth of the adjacent layer, so as to increase the firmness of the connection between the carbon fiber cloth, the foamed material layer and the carbon fiber cloth of the adjacent layer.

[0022] A specific working process and principle of a sandwich type carbon fiber motor vehicle body shell: since the polymethacrylimide has good mechanical properties, thermal deformation temperature and chemical stability, and the density (0.05-0.6 g / cm 3 ) of the polymethacrylimide is far less than the density (1.4-1.8 g / cm 3 ) of the carbon fiber composite material, therefore, the foamed material layer placed in the middle as a sandwich can further reduce the weight of the motor vehicle body shell, compared with the full carbon fiber composite material structure, the utility model can reduce the weight by more than 40% under the condition of the same wall thickness, and can maintain high strength and related performance, so as to meet the pursuit of people for the light weight of the motor vehicle body shell.

Claims

1. A sandwich-type carbon fiber vehicle body shell, characterized in that: It includes a foam material layer, and several layers of carbon fiber cloth are arranged on the left and right sides of the foam material layer. The carbon fiber cloth and the foam material layer have the shape of a motor vehicle body shell. Resin and curing agent are arranged between the carbon fiber cloth and the foam material layer and the adjacent carbon fiber cloth layers. The thickness of the carbon fiber cloth is 0.5 mm, and the thickness of the foam material layer is 60 mm.

2. The sandwich-type carbon fiber vehicle body shell according to claim 1, characterized in that: The number of carbon fiber cloth layers on both the left and right sides of the foamed material layer is equal.

3. The sandwich-type carbon fiber vehicle body shell according to claim 2, characterized in that: The number of carbon fiber cloth layers on the left and right sides of the foam material layer is two.

4. The sandwich-type carbon fiber vehicle body shell according to claim 2, characterized in that: The number of carbon fiber cloth layers on the left and right sides of the foam material layer is three.

5. The sandwich-type carbon fiber vehicle body shell according to claim 1, characterized in that: The carbon fiber fabric in adjacent layers has interwoven patterns.

6. The sandwich-type carbon fiber vehicle body shell according to claim 1, characterized in that: The foaming material layer is a polymethacrylimide layer.

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