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Carbon nano-reinforced aluminum-based conductor material and preparation method

A technology for strengthening aluminum-based and conductor materials, applied in the field of nano-phase-reinforced aluminum-based composite materials, can solve the problems of insufficient strength and heat resistance, and achieve the effects of high production efficiency, preventing crack propagation, and uniform structure

Active Publication Date: 2020-02-07
冷金凤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the application bottleneck problem of the 1-series alloy for conductors due to insufficient strength and heat resistance, to provide an aluminum-based composite material and its preparation method, and to improve the strength and greatly reduce the conductivity through the traditional alloying technology. The present invention The preparation method has simple process, low cost and strong designability, and is suitable for water-cooled semi-continuous casting or continuous casting and rolling process for continuous large-scale production

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  • Carbon nano-reinforced aluminum-based conductor material and preparation method

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Embodiment 1

[0028] Alloy composition: graphene 0.07%, Zr 0.30%, Fe 0.008%, Si 0.038%, Ti 0.010%, and the balance is Al. Among them, the preparation process and proportion of redox graphene@silicon dioxide are as follows: prepare KH-550 silane coupling agent solution, ethanol: water ratio is 1:14, and the content of KH-550 in the solution is 1.5vol.%. Static hydrolysis for 6 hours; the graphene in the solution is no more than 5 layers, graphene oxide with an average particle size of 5 microns, so that the graphene concentration is 1.0g / L, then add silica powder and ultrasonically treat for 100min, nano-silica The particle size of the powder is 10nm, and the amount of silica added is 1.0% of the graphene mass. After the solution is vacuum freeze-dried, the graphene oxide is reduced and sintered. The sintering temperature is 1500°C and the time is 2h, and the reduced graphene oxide@silica is obtained. Composite powder. Clean the furnace before starting the furnace. If alloys other than 1 se...

Embodiment 2

[0030]Alloy composition: graphene 0.01%, Zr 0.1%, Ti 0.010%, Fe 0.071%, Si 0.035, each of the other elements ≤ 0.01%, and the balance is Al. The preparation process and proportion of pre-synthesized redox graphene@silica are as follows: prepare KH-550 silane coupling agent solution, ethanol: water is 10:4, KH-550 content in the solution is 1.2vol.%, static hydrolysis 6 hours; Add no more than 3 layers of graphene oxide with an average particle size of 20 microns in the solution to make the graphene concentration 1.0g / L, then add silicon dioxide and ultrasonically treat it for 120min, and the particle size of nano-silica powder is 50nm , the addition amount is 5% of the mass of graphene, after the solution is vacuum freeze-dried, the graphene oxide is reduced and sintered, the sintering temperature is 1500°C, and the time is 2h, to obtain the reduced graphene oxide@silicon dioxide composite powder. Clean the furnace before starting the furnace. If alloys other than 1 series wer...

Embodiment 3

[0032] Alloy composition: graphene 0.05%, Zr 0.15%, Ti 0.010%, Fe 0.069%, Si 0.034, each of the other elements ≤ 0.01%, and the balance is Al. The preparation process and proportion of pre-synthesized redox graphene@silicon dioxide are as follows: prepare KH-550 silane coupling agent solution, ethanol: water is 3:9, and the content of KH-550 in the solution is 1.0vol.%. Static hydrolysis for 4 hours; add no more than 3 layers of graphene oxide with an average particle size of 15 microns in the solution to make the graphene concentration 0.8g / L, then add silica powder and ultrasonically treat for 60 minutes, nano-silica powder The diameter is 10nm, and the amount added is 5% of the mass of graphene. After the solution is vacuum freeze-dried, graphene oxide is reduced and sintered at 1200°C for 4 hours to obtain reduced graphene oxide@silicon dioxide composite powder. Clean the furnace before starting the furnace. If alloys other than 1 series have been produced before, it is ne...

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Abstract

The invention discloses a carbon nano-reinforced aluminum-based conductor material and a preparation method. Nano-silicon dioxide chemically grows on the surface of graphene oxide, reduced graphene oxide@silicon dioxide carbon nano-powder is prepared in a high-temperature sintering process, the mixed powder is blown into a melt through inert gas, and stirring, purification and casting are prepared. Silicon dioxide nano-particles grow on the surface of graphene, so that an agglomeration reaction in a reduction process for graphene oxide is avoided, a wetting angle of graphene and the aluminum melt is reduced, and graphene is prevented from floating onto the surface of the aluminum melt and into the melt to be agglomerated in an adding process. A graphene@silicon dioxide reinforcement is high in chemical stability, and improves the heat stability of an aluminum-based composite material with an aluminum- zirconium phase. According to the carbon nano-reinforced aluminum-based conductor material and the preparation method, the problem of insufficient strength and heat resistance of the aluminum-based composite material for limiting a conductor in an application process is solved. The compactness of the aluminum-based composite material produced by a casting method reaches 100%, the strength is increased by 25% and above, and the heat resistance is improved by 20-50 DEG C and above.

Description

technical field [0001] The invention relates to a nano-phase reinforced aluminum-based composite material, in particular to an aluminum-based composite material and a preparation method. Background technique [0002] In view of the urgent problems of west-to-east power transmission, long-distance transmission of north-south mutual supply and large line loss, higher requirements are put forward for the performance of overhead transmission conductors, requiring low loss, large capacity and robustness. This requires the transmission line conductor material to take into account high strength, high conductivity and heat resistance. Transmission conductor materials with high conductivity can reduce line loss and improve transmission efficiency, and transmission conductor materials with high heat resistance can increase the allowable operating temperature of transmission lines and increase the limit transmission capacity (allowable carrying capacity) to ensure large capacity of tra...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03C22C1/06C22F1/04
CPCC22C21/00C22C1/026C22C1/03C22C1/06C22F1/04
Inventor 冷金凤王康任丙辉王冉
Owner 冷金凤
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