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Porous aluminum-carbon composite material and preparation method thereof

A technology of aluminum-carbon composite material and carbon composite material, applied in the field of materials, can solve the problems such as the blank period of application research, and achieve the effects of good thermal insulation performance, increasing varieties and reducing weight

Inactive Publication Date: 2020-06-12
QINGHAI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] my country's aluminum bamboo (carbon) composite materials are mainly used in the decoration industry, but the research on the application of high-speed trains is still in a blank period

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of the porous aluminum-carbon composite material provided by the invention comprises the following steps:

[0025] 1) Processing of carbon materials: Cut bamboo chips (preferably dry bamboo chips) into blocks with a length of no more than 20cm, and put them in a steel tray with a stacking height of no more than 10cm; place the stacked bamboo chips in a vacuum Sintering in a sintering furnace; the vacuum degree of the vacuum furnace is less than or equal to 200Pa, then rapidly heat up to a sintering temperature of 250-350°C, and keep warm for 3.5-4.5h, then stop heating, cool naturally to room temperature, open the warehouse, and take out the carbonized bamboo board , and then placed in a crucible to grind, then sieved through a 200-mesh sieve, and then placed in a ziplock bag for later use.

[0026] 2) Preparation of aluminum chips: Process the selected aluminum alloy (which can be any brand of aluminum alloy, preferably hard aluminum alloy) into ...

Embodiment 1

[0032] 1) Processing of carbon materials: Cut the bamboo slices into pieces with a saw, the length of which does not exceed 20cm, and put them on a steel tray with a stacking height of no more than 10cm; place the stacked tray of bamboo slices in a vacuum sintering furnace for sintering; vacuum furnace The vacuum degree is 200Pa, and then the temperature is rapidly raised to 250°C for sintering, and the heat preservation is continued for 3.5 hours, then the heating is stopped, cooled to room temperature naturally, the warehouse is opened, the carbonized bamboo board is taken out, and then ground in a crucible, and then passed through a 200-mesh Sieve through a sieve and place in a ziplock bag for later use.

[0033] 2) Preparation of aluminum scrap: processing the aluminum alloy into aluminum scrap, the average particle size of the aluminum scrap is less than 1 mm, and the shape is irregular;

[0034] 3) Rough processing of composite materials: Mix the processed carbon materia...

Embodiment 2

[0038]1) Processing of carbon materials: Cut the bamboo slices into pieces with a saw, the length of which does not exceed 20cm, and put them on a steel tray with a stacking height of no more than 10cm; place the stacked tray of bamboo slices in a vacuum sintering furnace for sintering; vacuum furnace The vacuum degree is 200Pa, and then the temperature is rapidly raised to the sintering temperature of 300°C, and the heat preservation is continued for 4 hours. After that, the heating is stopped, and it is naturally cooled to room temperature. Sieve and place in a ziplock bag for later use.

[0039] 2) Preparation of aluminum scrap: processing the aluminum alloy into aluminum scrap, the average particle size of the aluminum scrap is less than 1 mm, and the shape is irregular;

[0040] 3) Rough processing of composite materials: Mix the processed carbon material and aluminum chips according to the mass ratio of carbon and aluminum chips at 1:49, and then place the mixed mixed ma...

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Abstract

The invention relates to a porous aluminium carbon composite material and a preparation method thereof. The preparation method comprises the following steps: sintering bamboo chips in vacuum for carbonization to obtain a carbon material; machining aluminium alloy into aluminium scraps; mixing the carbon material of certain proportion with the aluminium scraps to obtain a mixed material, and carrying out pressure molding on the mixed material to obtain an aluminium carbon composite material; and sintering the aluminium carbon composite material after pressure molding in vacuum to obtain the porous aluminium carbon composite material. The preparation method is simple to operate and low in cost, and has the advantages of effectively reducing weight of aluminum matrix composite material and prolonging the service life. And in addition, the porous aluminium carbon composite material has the advantages of being high in thermal insulating performance, silencing effect and comfort level.

Description

technical field [0001] The invention relates to the field of materials, more specifically, to a porous aluminum-carbon composite material and a preparation method thereof. Background technique [0002] With the implementation of the country's western development, 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 mainstream mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05
CPCB22F2999/00C22C1/05B22F3/1007B22F2201/20
Inventor 王晓民南辉李和奇曹海莲卢海静苏丽萍韦浩民
Owner QINGHAI UNIVERSITY
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