A kind of preparation method of continuous carbon fiber reinforced metal matrix composite material

A composite material and continuous fiber technology, which is applied in the field of continuous carbon fiber reinforced metal matrix composite materials, can solve the problems of carbon fiber agglomeration, achieve huge market potential, avoid entanglement, and broad application prospects

Active Publication Date: 2021-11-26
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that existing carbon fiber reinforced metal matrix composites have carbon fiber agglomeration and cannot be oriented and arranged in a controlled manner in the matrix, the present invention provides a method for preparing continuous carbon fiber reinforced metal matrix composites

Method used

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  • A kind of preparation method of continuous carbon fiber reinforced metal matrix composite material
  • A kind of preparation method of continuous carbon fiber reinforced metal matrix composite material
  • A kind of preparation method of continuous carbon fiber reinforced metal matrix composite material

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preparation example Construction

[0045] as attached Figure 1-19 Shown, the present invention is a kind of preparation method of continuous carbon fiber reinforced metal matrix composite material, comprises the following steps:

[0046] Step 1. Copper-plate the surface of the continuous carbon fiber after degumming, cleaning, neutralization, sensitization, and activation, so that the copper coating is evenly, densely and completely coated on the surface of the carbon fiber, and the thickness of the coating is 0.1~10μm continuous copper-coated carbon fibers;

[0047] Step 2. Use 3D printing equipment to coat the continuous carbon fiber filament with colloid, print the copper-plated continuous carbon fiber on the hot bed, and heat it to become a continuous copper-plated carbon fiber skeleton with a certain hardness, so that it can be in space Directional permutation distribution.

[0048] Step 3. According to the actual needs, put powders of different ingredients and ratios into the mixer for a period of mixi...

Embodiment 1

[0074] A method for preparing continuous carbon fiber reinforced metal matrix composites:

[0075] Step 1. After the continuous carbon fiber is pretreated, a layer of copper coating with a thickness of 2 μm is plated on the surface of the carbon fiber to obtain a continuous copper-coated carbon fiber. The above-mentioned continuous copper-coated carbon fiber is prepared by using the 3D printing technology. Image 6 The carbon fiber framework shown in the spatially oriented arrangement and distribution, the carbon fiber framework section is spider web-like, specifically includes the following steps:

[0076] (a) The single filament diameter of Yangzhou Carbon Fiber Engineering Technology Center is 7μm; the tow is 6K; the tensile strength is 3500MPa; the tensile modulus is 220Gpa, and the sizing rate is 0.8%. Continuous carbon fiber filaments are burned and degummed in turn , sodium hydroxide solution cleaning, nitric acid solution etching, ion water cleaning to neutrality, stan...

Embodiment 2

[0090] Step 1. After the continuous carbon fiber is pretreated according to the method of Example 1, a layer of copper coating with a thickness of 5 μm is plated on the surface of the carbon fiber to obtain a continuous copper-coated carbon fiber. The above-mentioned continuous copper-coated carbon fiber is prepared into a scroll shape by using 3D printing technology , the scroll equation is: , to obtain a scroll-shaped carbon fiber skeleton;

[0091] Step 2, preparing 200g of reduced copper powder with a size of 200 mesh;

[0092] Step 3, putting the scroll-shaped carbon fiber skeleton into a regular hexagonal cold-press mold with a side length of 27 mm, and then adding the reduced copper powder in step 2 to the cold-press mold to obtain a loose-packed embryo body;

[0093] Step 4, putting the loose-packed embryo body into a cold press molding machine for compression molding, the pressing speed is 30mm / min, the pressing pressure is 700MPa, and the holding time is 30s, so as...

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Abstract

The present invention uses the combination of powder metallurgy and 3D printing technology to control the matrix composition of composite materials and the spatial distribution of carbon fibers in the matrix by preparing carbon fiber skeletons, avoiding the phenomenon of entanglement, knotting and agglomeration of carbon fibers, and achieving carbon fiber content , distribution, and arrangement are controllable, and then pressed and sintered to give full play to the excellent mechanical properties of carbon fiber. The mechanical properties and friction and wear properties of the prepared continuous carbon fiber reinforced metal matrix composites are superior to the existing continuous carbon fiber reinforced metal matrix composites, which has huge market potential and broad application prospects.

Description

technical field [0001] The invention belongs to the field of metal matrix composite materials, and in particular relates to a preparation method of continuous carbon fiber reinforced metal matrix composite materials. Background technique [0002] Metal matrix composites have the advantages of good electrical and thermal conductivity, excellent friction and wear properties, and ductility. However, some metal substrates have poor mechanical properties, especially in high-temperature environments, where their strength and hardness will drop sharply, so fiber reinforcement is usually used to improve their mechanical properties. Carbon fiber has a series of advantages such as high specific strength, wear resistance, corrosion resistance, and electrical and thermal conductivity similar to metal. It is precisely because of the good properties of metal matrix composites and carbon fibers that people expect to obtain the excellent mechanical properties of carbon fibers while retaini...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/06C22C47/04C22C47/14C22C49/02C22C49/14C22C101/10C22C121/02
CPCC22C47/04C22C47/06C22C47/14C22C49/02C22C49/14
Inventor 樊江磊贾旭钢王艳周向葵刘建秀吴深李莹潘胜利
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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