Surface-modified three-dimensional network carbon fiber reinforced composite material and preparation method thereof

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...

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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.