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Preparation method of vehicle frame made of graphene modified composite material

A technology of graphene modification and composite materials, which is applied in vehicle parts, transportation and packaging, superstructure, etc. It can solve the problems of insufficient strength, affecting the service life of automobiles, driving safety, and easy corrosion, etc., and achieves corrosion resistance The effect of elongation, strong design, and improved impact toughness

Inactive Publication Date: 2019-04-19
镇江顺龙新材料技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the frame on the market has insufficient strength and is easily corroded, which affects the service life of the car and the safety of the car

Method used

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  • Preparation method of vehicle frame made of graphene modified composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Use 1k plain carbon fiber cloth puncture body as the prefabricated body material, the fiber tow in the carbon fiber rod is 1k, the puncture distance of the carbon fiber rod in the prefabricated body is 1mm, and the density of the prefabricated body is controlled at 0.27 g / cm 3 .

[0023] Step 2: Densify the preform in step 1 by chemical vapor deposition, using natural gas as the carbon source gas, and the gas flow rate is 2.3m 3 / h, the heating rate is 10°C / h, the deposition temperature is 800°C, and the deposition time is 100h. When the density ≥ 1.44g / cm 3 Then transfer to the next dense process.

[0024] Step 3: Mix graphene and asphalt in a certain proportion, control the graphene content at 0.1wt.%, stir evenly, and the balance is asphalt, and obtain the impregnation mixture.

[0025] Step 4: Submerge the base body prepared in step 2 into the asphalt solution in step 3. The asphalt is tar pitch, and place it together with the asphalt container in a carbo...

Embodiment 2

[0028] Step 1: Use 3k plain carbon fiber cloth puncture body as the prefabricated body material, the fiber tow in the carbon fiber rod is 3k, the puncture distance of the carbon fiber rod in the prefabricated body is 10mm, and the density of the prefabricated body is controlled at 0.50 g / cm 3 .

[0029] Step 2: Densify the preform in step 1 by chemical vapor deposition, using natural gas as the carbon source gas, and the gas flow rate is 5.0m 3 / h, the heating rate is 30°C / h, the deposition temperature is 900°C, and the deposition time is 200h. When the density ≥ 1.44g / cm 3 Then transfer to the next dense process.

[0030] Step 3: Mix graphene and asphalt in a certain proportion, control the graphene content at 0.5wt.%, stir evenly, and the balance is asphalt, and obtain the impregnation mixture.

[0031] Step 4: Submerge the body prepared in step 2 completely in the asphalt solution in step 3. The asphalt is petroleum asphalt, and place it together with the asphalt contain...

Embodiment 3

[0034] Step 1: Use 1k twill carbon fiber cloth puncture body as the prefabricated body material, the fiber tow in the carbon fiber rod is 6k, the puncture distance of the carbon fiber rod in the prefabricated body is 20mm, and the density of the prefabricated body is controlled at 0.82g / cm 3 .

[0035] Step 2: Densify the preform in step 1 by chemical vapor deposition, using natural gas as the carbon source gas, and the gas flow rate is 12.0m 3 / h, the heating rate is 80°C / h, the deposition temperature is 1100°C, and the deposition time is 300h. When the density ≥ 1.44g / cm 3 Then transfer to the next dense process.

[0036] Step 3: Mix graphene and asphalt in a certain proportion, control the graphene content at 1.4wt.%, stir evenly, and the balance is asphalt, and obtain the impregnation mixture.

[0037] Step 4: Submerge the body prepared in step 2 into the asphalt solution in step 3. The asphalt is tar pitch, and place it together with the asphalt container in a carboniz...

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Abstract

The invention discloses a preparation method of a vehicle frame made of a graphene modified composite material. Carbon fibers have the characteristics of high strength and low density, graphene has the characteristics of high strength, high electroconductivity, and high thermal conductivity, and natural gas and asphalt are used to prepare a compact carbon / carbon composite material. The preparationmethod comprises following steps: step one, adopting punctured carbon fiber cloth as a prefabricated material; step two, carrying out chemical vapor deposition (CVD) and compacting; step three, mixing graphene with asphalt; step four, subjecting asphalt to impregnation and carbonization; and step five, carrying out mechanical processing. Carbon fibers are taken as the skeleton, pyrolyzed carbon matrix and asphalt carbon matrix are taken as the reinforcing materials, and the graphene modified composite material is used to prepare the vehicle frame, which has the advantages of lightness, excellent mechanical properties, high mechanical strength, good impact toughness, good wear resistance, and good corrosion resistant performance.

Description

technical field [0001] The invention relates to an automobile accessory and a preparation method thereof, in particular to a preparation method of a graphene-modified composite automobile frame. Background technique [0002] The frame is a frame structure spanning the front and rear axles of the car, commonly known as the girder, which is the base of the car. It is generally composed of longitudinal beams and several beams, and is supported on the wheels through the suspension device, front axle, and rear axle. The frame must have sufficient strength and rigidity to withstand the load of the car and the impact from the wheels. The function of the frame is to support and connect the various assemblies of the car, so that each assembly maintains a relatively correct position, and bears various loads inside and outside the car. [0003] The vast majority of modern cars have a frame as the skeleton of the whole car. Most of the parts and assemblies of the car are fixed by the f...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/622B62D29/04
CPCC04B35/83B62D29/041C04B35/622C04B2235/422C04B2235/616
Inventor 韩旭杨方琴梁智萍
Owner 镇江顺龙新材料技术开发有限公司
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