A preparation method of high load and high heat resistance braided fiber reinforced aluminum matrix composite material

A composite material and woven fiber technology, which is applied in the field of preparation of high load and high heat resistance woven fiber reinforced aluminum matrix composite materials, can solve problems such as complicated operation, and achieve the effects of increasing contact area, low residue and increasing load

Active Publication Date: 2022-04-01
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • A preparation method of high load and high heat resistance braided fiber reinforced aluminum matrix composite material

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Embodiment 1

[0026] A method for preparing a high-load and high-heat-resistant braided fiber-reinforced aluminum matrix composite material, comprising the following steps:

[0027] (1) Prepare the fiber prefabricated body. The fiber prefabricated body is made of polyacrylonitrile-based carbon fiber M40 braided body produced by Toray Company. The fiber preform is then placed in a packaging mold. Among them, the encapsulation mold is made by vertically fixing the fiber preform with a high-temperature-resistant graphite gasket, then making an outsourcing mold according to its size, and then putting the fiber preform fixed by graphite into the mold together. A liquid inlet is left in the packaging mold for subsequent feeding of liquid carbon dioxide and liquid metal.

[0028] (2) Degumming: at 20°C, 5.6×10 6 Under the condition of Pa, feed liquid carbon dioxide into the packaging mold so that the liquid carbon dioxide completely submerges the fiber preform, close the liquid inlet, and let it...

Embodiment 2

[0034] A method for preparing a high-load and high-heat-resistant braided fiber-reinforced aluminum matrix composite material, comprising the following steps:

[0035] (1) Prepare the fiber prefabricated body. The fiber prefabricated body is made of polyacrylonitrile-based carbon fiber M40 braided body, and its braided structure is a 2.5D dimensional braided body with shallow cross-bending links. Then place the fiber preform in a packaging mold adapted to the size of the fiber preform in the same preparation method as in Example 1. The encapsulation mold is provided with two liquid inlets, one is provided with a riser pipe for subsequent liquid metal inlet, and the other is provided with a liquid infusion pipe for liquid carbon dioxide inlet.

[0036] (2) Degumming: Place the packaging mold and the ZL301 aluminum alloy in the upper and lower chambers of the vacuum pressure infiltration device in the manner of Example 1, and connect the infusion tube with the outside world. Fi...

Embodiment 3

[0042] A method for preparing a high-load and high-heat-resistant braided fiber-reinforced aluminum matrix composite material, comprising the following steps:

[0043] (1) Prepare the fiber prefabricated body. The fiber prefabricated body is made of polyacrylonitrile-based carbon fiber M40 weaving body, and its weaving structure is a deeply cross-linked 2.5D dimensional weaving body. Then place the fiber preform in a packaging mold adapted to the size of the fiber preform in the same preparation method as in Example 1.

[0044] (2) Degumming: at 20°C, 5.6×10 6 Under the condition of Pa, feed liquid carbon dioxide into the packaging mold, so that the liquid carbon dioxide completely submerges the fiber preform, close the liquid inlet, and let it stand and soak for 24 hours.

[0045] (3) Expansion: Open the liquid inlet, first release to normal pressure, part of the liquid carbon dioxide volatilizes, and the other part of the carbon dioxide forms dry ice; then heat to sublimate...

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Abstract

The invention relates to the technical field of aluminum-based composite materials, in particular to a preparation method of high-load and high-heat-resistant braided fiber-reinforced aluminum-based composite materials. It includes the following steps: preparing a fiber preform, and placing the fiber preform in a packaging mold; degumming: feeding liquid carbon dioxide into the packaging mold under pressure and temperature that make the carbon dioxide liquid, so that the liquid carbon dioxide is completely Immerse the fiber preform for 20-24 hours; expansion: adjust the pressure or / and temperature to gasify and release the liquid carbon dioxide; impregnation: place the packaging mold in a vacuum pressure infiltration device, and pass the molten liquid metal through Air pressure is used to impregnate the fiber preform into the packaging mold to obtain a composite material. This application utilizes the characteristic that the volume of liquid carbon dioxide increases when it changes into gas, so that the fiber prefabricated body expands, avoiding the problem of residual stress caused by different thermal expansion coefficients, thereby effectively increasing the load of the composite material.

Description

technical field [0001] The invention relates to the technical field of aluminum-based composite materials, in particular to a preparation method of high-load and high-heat-resistant braided fiber-reinforced aluminum-based composite materials. Background technique [0002] Composite materials, as the name implies, are a kind of multiphase system composed of multiple material phases. Composite materials are mainly composed of three parts: reinforcement material, matrix material, and interface material. Among them, the strength and modulus of the reinforcement material are relatively high, and it is distributed in the composite material in the form of solid during the preparation process, also known as the dispersed phase, and the matrix material is uninterrupted in the composite material, also known as the continuous phase. With the rapid development of modern high-tech, especially the continuous progress of technology-intensive fields such as aerospace, the design and manufa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/06C22C47/02C22C47/12C22C49/06C22C49/14C22C101/10
CPCC22C47/06C22C47/02C22C47/12C22C49/06C22C49/14
Inventor 王振军徐志锋蔡长春余欢熊博文杨伟张守银
Owner NANCHANG HANGKONG UNIVERSITY
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