Surface-modification three-dimensional-network-carbon-fiber-reinforced composite material and preparing method

A technology for enhancing composite materials and surface modification, applied in chemical instruments and methods, metal material coating technology, gaseous chemical plating, etc. The effect of improving mechanical properties, improving thermal conductivity and improving adaptability

Active Publication Date: 2016-08-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the electrochemical reaction between the carbon fiber and the metal matrix, and the large difference in electrode potential between the carbon fiber and the metal matrix, the primary battery is prone to corrosion in an environment with high humidity, so the material is prone to failure.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Diamond Modified Braided Carbon Fiber Reinforced Aluminum Matrix Composite

[0038] Include the following steps:

[0039] (1) Put the three-dimensional braided carbon fiber (with a pore size of 500 μm and a porosity of 90%) in an acetone solution for ultrasonic cleaning;

[0040] (2) Using magnetron sputtering method to sputter W film on the surface of three-dimensional woven carbon fiber, wherein the thickness of W film is 150nm; using hot wire CVD to deposit diamond film, deposition process parameters: hot wire distance 6mm, substrate temperature 800 ℃, heat Filament temperature 2200°C, deposition pressure 3KPa, CH 4 / H 2 The volume flow ratio is 1:99, and the thickness of the diamond film is 120 μm; the Mo / Cu composite film layer is sputtered on the surface of the three-dimensional network skeleton of the core diamond by magnetron sputtering, wherein the thickness of the Mo film is 50 nm, and the thickness of the Cu film is 100 nm;

[0041] (3) Put the ...

Embodiment 2

[0042] Embodiment two: diamond / graphene modified braided carbon fiber reinforced PMMA composite material

[0043] Include the following steps:

[0044] (1) Put the three-dimensional braided carbon fiber (with a pore size of 300 μm and a porosity of 80%) in an acetone solution for ultrasonic cleaning;

[0045] (2) The diamond film is deposited by hot wire CVD. The deposition process parameters are: hot wire distance 6mm, substrate temperature 800°C, hot wire temperature 2200°C, deposition pressure 3KPa, CH 4 / H 2 The volume flow ratio is 1:99, and the thickness of the diamond film is 200 μm; the graphene film layer is grown in situ on the diamond surface by plasma-assisted chemical vapor deposition, and the deposition parameters are: H 2 / CH 4 Atmosphere, CH 4 The gas mass flow percentage is 10%, the growth temperature is 900°C, and the growth pressure is 5×10 5 Pa, plasma current density 20mA / cm 2 , the magnetic field strength in the deposition area is 200 gauss, and the...

Embodiment 3

[0047] Example 3: Diamond Modified Braided Carbon Fiber Reinforced Aluminum Alloy Matrix Composite

[0048] Include the following steps:

[0049] (1) Put the three-dimensional braided carbon fiber (with a pore size of 150 μm and a porosity of 60%) in an acetone solution for ultrasonic cleaning;

[0050] (2) Sputtering a Mo film on the surface of the cored diamond three-dimensional network skeleton using evaporation plating technology, wherein the thickness of the Mo film is 50nm; using hot wire CVD to deposit the diamond film, deposition process parameters: hot wire distance 6mm, substrate temperature 750°C, Filament temperature 2200°C, deposition pressure 3KPa, CH 4 / H 2 The volume flow ratio is 1:99, and the thickness of the diamond film is 80 μm; the Mo / Ni / Cu composite film is sputtered on the surface of the three-dimensional network skeleton of the core diamond by magnetron sputtering, wherein the thickness of the Mo film is 50nm, and the thickness of the Ni film is 50nm...

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PUM

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Abstract

The invention discloses a surface-modification three-dimensional-network-carbon-fiber-reinforced composite material and a preparing method.Three-dimensional carbon fiber frameworks with different bore diameters are prepared as required, and after surface pretreatment, diamond, carbon nanometer tubes and graphene are subjected to chemical vapor deposition; then the mixture and matrix materials are compounded, wherein the matrix materials are metal or polymers; the carbon-fiber-reinforced metal-based or polymer-based composite material with the three-dimensional net-shaped framework structure is obtained.A three-dimensional continuous heat conduction channel is formed in the composite material through the surface-modification three-dimensional net-shaped carbon fibers, and therefore the heat conduction performance of the composite material is greatly improved; meanwhile, according to space distribution of carbon fibers in the matrix material, the mechanical performance of the composite material can also be improved, and the density and the thermal expansion coefficient can be decreased; the thermal expansion coefficient, the mechanical performance and the thermal performance can be further regulated and controlled by adding zero-dimensional particle reinforcement.

Description

technical field [0001] The invention discloses a surface-modified three-dimensional network carbon fiber reinforced composite material and a preparation method thereof, belonging to the technical field of composite material preparation. Background technique [0002] The fierce evolution of international competition has continuously spawned the rapid development of science and technology. Microelectronics technology and guidance technology have naturally become the top priority of the competition between countries. All kinds of electronic equipment are more and more integrated, their energy density is getting higher and higher, and more and more heat is generated. To ensure the stable operation of the equipment, it is necessary to carry out effective thermal management on it. At the same time, higher requirements are put forward for the high strength and low density of the material. Pitch-based carbon fiber has attracted the attention of scientific researchers due to its low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B3/12B32B33/00B32B37/10B32B38/16B32B38/00C22C47/04C22C47/06C22C47/14C22C47/08C23C16/26C23C16/27C23C16/02C22C49/14C22C101/10
CPCB32B3/12B32B9/007B32B9/041B32B9/045B32B9/048B32B33/00B32B37/10B32B38/0008B32B38/162B32B38/164B32B2307/302B32B2307/714C22C47/04C22C47/06C22C47/08C22C47/14C22C49/14C23C16/0272C23C16/26C23C16/27C23C16/271C23C16/272C23C16/274C23C16/275C23C16/276
Inventor 周科朝魏秋平马莉余志明
Owner CENT SOUTH UNIV
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