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A kind of lightweight aluminum bamboo/carbon composite material and its preparation method and application

A carbon composite material and lightweight technology, applied in the direction of chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of limited use of composite materials, blank period, etc., and achieve low cost, weight reduction, Excellent noise reduction effect

Active Publication Date: 2019-12-20
QINGHAI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aluminum-bamboo composite material is one of the representatives of lightweight composite aluminum alloy materials. However, because the existing aluminum-bamboo composite material is traditional aluminum plate-wrapped bamboo plate, there is no force between the aluminum-bamboo composite materials, and rivets or screws are often used to fix the aluminum-bamboo composite material. , to prevent the bamboo sheet from deforming, sliding, and falling off. Once the screws or rivets fall off, the use of composite materials will be limited
At present, it is mainly used in the decoration industry, and the research on the application on high-speed trains is still in a blank period.

Method used

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  • A kind of lightweight aluminum bamboo/carbon composite material and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] According to the single-layer composite method (such as Picture 1-1 As shown), the aluminum plate with a thickness of 3mm and the bamboo plate with a thickness of 5mm were rolled and pressed together by a vise, and then placed in a vacuum resistance furnace for sintering.

[0023] The sintering system is as follows: the vacuum furnace pressure is 180Pa; the sintering temperature is 800°C; the temperature is kept for 3 hours; and then naturally cooled to room temperature.

[0024] After the sintered aluminum-bamboo (carbon) composite material was taken out, the mechanical properties were tested by a universal testing machine, and the results showed that the ultimate tensile strength σ b =315MPa; tensile yield strength σ 0.2 =261MPa; elongation δ 5 (%)=13; hardness HB=54; compared with the same volume of aluminum alloy, the mass is reduced by 14%.

Embodiment 2

[0026] According to the double-layer composite method (such as figure 1 -2), the aluminum plate with a thickness of 3mm and the bamboo plate with a thickness of 5mm are rolled and pressed together by a vise, and then placed in a vacuum resistance furnace for sintering.

[0027] The sintering system is as follows: the vacuum furnace pressure is 150Pa; the sintering temperature is 700°C; the temperature is kept for 5 hours; and then naturally cooled to room temperature.

[0028] After the sintered aluminum-bamboo (carbon) composite material was taken out, the mechanical properties were tested by a universal testing machine, and the results showed that the ultimate tensile strength σ b =321MPa; tensile yield strength σ 0.2 =257MPa; elongation δ 5 (%)=11; hardness HB=45; compared with the same volume of aluminum alloy, the mass is reduced by 18%.

Embodiment 3

[0030] According to the latitude and longitude composite method (such as figure 1 -3), the aluminum plate with a thickness of 2mm and the bamboo plate with a thickness of 4mm are rolled and pressed together by a vise, and then placed in a vacuum resistance furnace for sintering.

[0031] The sintering system is as follows: the vacuum furnace pressure is 160Pa; the sintering temperature is 850°C; the temperature is kept for 4 hours; and then naturally cooled to room temperature.

[0032] After the sintered aluminum-bamboo (carbon) composite material was taken out, the mechanical properties were tested by a universal testing machine, and the results showed that the ultimate tensile strength σ b =311MPa; tensile yield strength σ 0.2 =251MPa; elongation δ 5 (%)=11; hardness HB=48; compared with the same volume of aluminum alloy, the mass is reduced by 17%.

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Abstract

The invention relates to the technical field of novel compound materials, and relates to an aluminum bamboo compound material and a preparation method. The compound material adopts the technical scheme of a lightweight aluminum bamboo / carbon composite material, and is characterized by comprising an aluminum plate layer and a bamboo sheet layer, wherein the aluminum plate layer and the bamboo sheetlayer are compounded in a single layer way, a multi-layer way or a multi-layer longitude and latitude compounding way, and is formed through vacuum sintering. The preparation method is characterizedby comprising the following steps: processing the bamboo sheet layer and the aluminum plate layer; compounding in a single layer way, a multi-layer way or a multi-layer longitude and latitude compounding way; performing vacuum sintering. The compound material effectively reduces the weight of an aluminum matrix composite material, and is good in mechanical interaction force and wide in application; the preparation method is simple, the technical operation flow is simple, investment capital for equipment is less, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to an aluminum-bamboo composite material and a preparation method. Background technique [0002] With the implementation of the country's western development strategy, national infrastructure projects represented by high-speed railways (high-speed railways) are being implemented and constructed on a large scale across the country. Coupled with the improvement of people's living standards, and the convenience, comfort, speed, efficiency, and safety of high-speed rail, people's travel methods are gradually changing to high-speed rail trains, which increases the demand for high-speed rail trains. The traditional train body is made of steel. Due to the weight of the body itself, it is not conducive to increasing the speed and saving energy. Therefore, aluminum and its alloys with light weight, good corrosion resistance, and good forming ability have gradually become the main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/20C22C49/06C22C49/14C22C101/10B32B9/02B32B9/04B32B15/20
Inventor 南辉王晓民曹海莲卢海静王金颖韦浩民
Owner QINGHAI UNIVERSITY
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