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Energy-absorbing component manufactured by carbon nano-tube paper and manufacture method thereof

A carbon nanotube paper, carbon nanotube technology, applied in the direction of carbon nanotubes, nanocarbons, chemical instruments and methods, etc., can solve problems such as heat dissipation, safety, and smaller engine compartments

Active Publication Date: 2018-12-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the current automobile manufacturing process has contradictory defects in terms of improving safety performance and reducing body weight, and the further improvement of vehicle crashworthiness encounters a bottleneck that is difficult to break through
There are attempts to introduce compact engines and reduce other structures, but this creates new problems, such as heat dissipation due to smaller engine bays, safety issues, etc.

Method used

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  • Energy-absorbing component manufactured by carbon nano-tube paper and manufacture method thereof
  • Energy-absorbing component manufactured by carbon nano-tube paper and manufacture method thereof
  • Energy-absorbing component manufactured by carbon nano-tube paper and manufacture method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Automotive crash box made of carbon nanotube paper based on vertical carbon nanotube array

[0057] Firstly, vertical carbon nanotube arrays were prepared by CVD method, wherein the carbon nanotubes had a diameter of 10 nm and a length of about 80 μm, and the carbon nanotube paper was produced by papermaking method. Carry out front and rear rolling on the roller press each once, then dry in a blast oven at 80°C, the thickness of the obtained carbon nanotube paper is 1.5mm, take 0.200kg of this carbon nanotube paper, add 0.020kg of pitch, Put it in a rotary oven, heat it with a rotary solvent at 140°C, and then carbonize it at a high temperature of 1100°C to make a cylindrical material with a height of 112mm and a diameter of 50mm. Then it is packaged in an aluminum alloy pipe fitting with the same shape, a weight of 0.050kg, and a thickness of 2mm. It is installed between the bumper and the longitudinal beam of the car as a car energy-absorbing box. The energy-absorbing...

Embodiment 2

[0060] Automobile B-pillar based on vertical carbon nanotube array carbon nanotube paper

[0061] Firstly, vertical carbon nanotube arrays were prepared by CVD method, wherein the carbon nanotubes had a diameter of 20nm and a length of about 90μm, and the carbon nanotube paper was made by papermaking method. After rolling and drying, take 0.400kg of the carbon nanotube paper, add 0.030kg of maleimide, place it in a rotary oven, perform a rotary solvent heat treatment at 120°C, and then carbonize it at a high temperature of 1100°C , made into a block material with a length of 120mm, a width of 50mm, and a height of 33mm, and then encapsulated in an aluminum alloy pipe fitting with the same shape and capacity, a weight of 0.053kg, and a thickness of 2mm, installed on a car bumper with The energy-absorbing box between the longitudinal beams of the vehicle body can absorb about 21kJ of collision kinetic energy.

Embodiment 3

[0063] Automotive crash box made of carbon nanotube paper based on vertical carbon nanotube array / graphene composite

[0064]Firstly, using the combination of low temperature CVD and high temperature CVD, the vertical carbon nanotube arrays are prepared at low temperature (750°C), and then graphene intercalation is grown between the vertical carbon nanotube array layers at high temperature (950°C) to obtain a three-dimensional The three-dimensional vertical carbon nanotube array / graphene composite material (the carbon nanotube diameter is 10nm, the length is about 80μm), and the carbon nanotube paper is produced by the papermaking method. After rolling and drying, take 0.180kg of the carbon nanotube paper, add 0.010kg of maleimide, place it in a rotary oven, perform a rotary solvent heat treatment at 140°C, and then carbonize it at a high temperature of 1000°C , made into a block material with a height of 118mm, a length of 52mm, and a width of 30mm, and then encapsulated in a...

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Abstract

The invention discloses an energy-absorbing component manufactured by carbon nano-tube paper, belonging to the field of manufacturing nano-materials and related devices. The energy absorbing member ismade of carbon nanotube paper. Wherein, the carbon nanotube paper adopts a carbon nanotube paper made of a vertical carbon nanotube array, a vertical carbon nanotube array / graphene three-dimensionalcomposite structure material, ultra-long perfect carbon nanotubes and / or agglomerated carbon nanotubes. The energy-absorbing components provided in this paper have excellent impact resistance, high energy-absorbing density and low mass density, and are easy to be manufactured in batches, which is very conducive to improving the impact resistance of vehicles and promoting the lightweight process ofautomobiles.

Description

technical field [0001] The invention relates to the technical field of manufacturing nanomaterials and related devices, in particular to an energy-absorbing component made of carbon nanotube paper and a preparation method. Background technique [0002] When a vehicle collides, the impact kinetic energy can be calculated by the formula to calculate, where m is the weight of the vehicle body and v is the velocity in the direction of impact. Collision kinetic energy mainly comes from three aspects of collision: frontal collision, side collision and rollover collision. The energy generated by the frontal collision of the vehicle is mainly absorbed by the energy-absorbing boxes in the front and rear crumple areas of the vehicle, while side collisions and vehicle rollover require improved anti-collision performance of load-bearing components such as A, B, C pillars, doors and roof. . [0003] The automobile energy absorbing box is a necessary energy absorbing part installed be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R19/34C01B32/168
CPCB60R19/34C01B32/168C01B2202/34C01B2202/36
Inventor 魏飞张申力白云祥朱振兴申博渊
Owner TSINGHUA UNIV
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