A kind of carbon fiber matrix composite material and preparation method thereof

A composite material and carbon fiber technology, which is applied in metal material coating process, superimposed layer plating, vacuum evaporation plating, etc., can solve the problems of difficult plating of internal fibers, cumbersome process, limited thickness of plating, etc., to achieve the interface The effect of stable bonding force, uniform structure and stable coating quality

Active Publication Date: 2022-01-07
GUANGDONG INST OF NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] (1) Carbon fibers are hydrophobic, and each bundle of carbon fibers has thousands of monofilaments. When the outer layer of fibers is first deposited with metal, the outer layer of carbon fibers forms a shielding electric field, making it difficult for the inner fibers to be plated with metal, resulting in electroplating on the surface of carbon fibers. Black center, which affects the uniformity and bond strength of the composite material, thereby limiting the application of the material
[0005] (2) Electroless plating on the surface of carbon fiber, high cost, cumbersome process, low efficiency, and will pollute the environment to a certain extent
Because the transition layer obtained by electroless plating is often easily affected by factors such as the cost of the plating solution and operating conditions, the quality of the plating layer is unstable in industrial production.
[0006] (3) In practical applications, carbon fibers are mostly used in the shape of plates or pipes. The existing public information shows that the surface metallization of carbon fibers is mainly researched on a single linear carbon fiber, which is far away from practical applications.
[0007] (4) Whether it is electroplating or electroless plating, the thickness of the coating deposited on carbon fiber is very limited, generally no more than 5 μm, which is difficult to meet engineering applications
[0008] Based on the problems existing in the current carbon fiber surface metallization technology, it is necessary to design a tube-shaped or plate-shaped carbon fiber composite structure with variable thickness and variable composition and its preparation method, which not only solves the problem of poor bonding between the metal layer and carbon fiber problems, and also make the thickness and composition of the coating deposited on the surface after metallization variable, to meet the needs of engineering

Method used

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  • A kind of carbon fiber matrix composite material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] A carbon fiber matrix composite material such as figure 1 As shown, it includes a carbon fiber substrate 1, an undercoat 2 and a topcoat 3 in sequence; the carbon fiber substrate 1 is a carbon fiber plate, the undercoat 2 is a copper coating deposited by arc ion plating, and the topcoat 3 is silver conductive coating.

[0036] The preparation method of the carbon fiber matrix composite material of the present embodiment comprises the following steps:

[0037] 1) Carry out high-temperature heating and degumming treatment on the carbon fiber board: raise the temperature of the box-type electric furnace to 350 degrees, place the carbon fiber board in the furnace, keep it warm for 30 minutes, and cool down with the furnace;

[0038] 2) Place the above-mentioned carbon fiber plate in a vacuum cathodic arc ion plating machine and fix it on the workpiece frame. The workpiece frame can revolve or rotate, and then clean in the furnace, and use ions to bombard the surface of the...

Embodiment 2

[0043] The structure and preparation method of a carbon fiber-based composite material are basically the same as in Example 1, the difference is that in step 2) of the preparation method of the carbon fiber-based composite material of this embodiment:

[0044] The specific parameters of arc ion plating are as follows: the target is Cu target, the auxiliary gas is N 2 and Ar, the air pressure is 4Pa, the purity is 99.99%, the electromagnetic coil voltage is 25V, the target current is 150A, the negative bias voltage is 80V, the workpiece revolution speed is 4r / min, the coating time is 480min, and the deposited film thickness is controlled at 10-15μm.

[0045] The interfacial bond strength of the carbon fiber-based composite material in this example is >30MPa.

Embodiment 3

[0047] The structure and preparation method of a carbon fiber-based composite material are basically the same as in Example 1, the difference is that in step 2) of the preparation method of the carbon fiber-based composite material of this embodiment:

[0048] The specific parameters of arc ion plating are as follows: the target is Cu target, the auxiliary gas is N 2 And Ar, the gas pressure is 2Pa, the purity is 99.99%, the electromagnetic coil voltage is 10V, the target current is 50A, the negative bias voltage is 20V, the workpiece revolution speed is 3r / min, the coating time is 400min, and the deposited film thickness is controlled at 10-15μm.

[0049] The interfacial bonding strength of the carbon fiber matrix composite material in this example is <10MPa.

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Abstract

The invention discloses a carbon fiber matrix composite material and a preparation method thereof. The carbon fiber-based composite material includes a carbon fiber matrix, a primer and a topcoat in sequence; the carbon fiber substrate is a carbon fiber tube or a carbon fiber plate, the primer is a copper coating deposited by arc ion plating, and the topcoat is The layer is a metal coating or a cermet coating. The carbon fiber-based composite material of the present invention uses the copper coating prepared by the arc ion plating process as the undercoat layer, which has little restriction on the shape of the carbon fiber matrix, and the coating structure is uniform, which improves the interfacial bonding force of the carbon fiber-based composite material; Or cermet coating is used as the top coating. The composition, thickness and process of the top coating can be selected according to actual needs, ensuring the functionality of the composite material and finally realizing diversified applications.

Description

technical field [0001] The invention relates to the technical field of carbon fiber composite materials, in particular to a carbon fiber-based composite material and a preparation method thereof. Background technique [0002] Carbon fiber was born in the late 1950s. Due to its unparalleled excellent properties, such as high specific strength, high specific modulus, low density, high temperature resistance, radiation resistance, good toughness, good electrical and thermal conductivity, and small thermal expansion coefficient, it has attracted widespread attention. focus on. However, compared with the excellent electrical conductivity, high wear resistance, high temperature oxidation resistance and surface machinability of metal materials, the performance of carbon fiber composite materials is much worse in this respect. Therefore, the current main use of carbon fiber is as a reinforcing material, compounded with resin, metal, ceramics, and carbon to manufacture advanced comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/02C23C14/32C23C14/18C23C24/04C23C4/134C23C4/06C23C4/08C23C4/14C23C4/16
CPCC23C28/021C23C28/023C23C28/027C23C14/325C23C14/18C23C24/04C23C4/134C23C4/06C23C4/08
Inventor 叶云张科杰黄仁忠黄健文魁王高民曾良
Owner GUANGDONG INST OF NEW MATERIALS
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