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Hollow carbon fiber felt epoxy resin composite material and preparation method thereof

A technology of felt epoxy resin and composite materials, which is applied in the field of carbon fiber epoxy resin composite materials and its preparation, can solve the problems of high density and difficulty in three-dimensional weaving of carbon fibers, and achieve increased payload, good degree of graphitization, and improved bonding strength Effect

Inactive Publication Date: 2011-11-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of high density of existing carbon fiber epoxy resin composite materials and difficulty in three-dimensional weaving of carbon fiber as composite material reinforcement, and provides hollow carbon fiber felt epoxy resin composite material and its preparation method

Method used

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  • Hollow carbon fiber felt epoxy resin composite material and preparation method thereof
  • Hollow carbon fiber felt epoxy resin composite material and preparation method thereof
  • Hollow carbon fiber felt epoxy resin composite material and preparation method thereof

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specific Embodiment approach 1

[0008] Embodiment 1: The hollow carbon fiber felt epoxy resin composite material in this embodiment is made of hollow carbon fiber felt and epoxy resin glue; wherein the hollow carbon fiber felt is made of urea and carbon powder in a mass ratio of 50 to 150:1 Made; epoxy resin glue is composed of bisphenol A type epoxy resin, acetone and diethylene triamine, wherein the mass ratio of bisphenol A type epoxy resin to acetone is 100:5~10, bisphenol A type The mass ratio of epoxy resin to diethylenetriamine is 100:8-12.

[0009] The hollow carbon fiber felt of this embodiment is synthesized by chemical vapor growth method in a closed static system without any catalyst under the action of air pressure. The hollow carbon fiber felt has a tube diameter of 1 μm, a wall thickness of 5 nm to 10 nm, and a length It reaches centimeter level and is self-woven into a felt structure with a thickness of 5mm to 10mm. The hollow carbon fiber felt is synthesized in situ at low temperature, and ...

specific Embodiment approach 2

[0010] Embodiment 2: This embodiment differs from Embodiment 1 in that the hollow carbon fiber felt is made of urea and carbon powder at a mass ratio of 60-140:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the hollow carbon fiber felt is made of urea and carbon powder at a mass ratio of 100:1. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a hollow carbon fiber felt epoxy resin composite material and a preparation method thereof, relates to a carbon fiber epoxy resin composite material and the preparation method thereof, and aims to solve the problems of high density of a conventional carbon fiber epoxy resin composite material and difficult three-dimensional weaving of the carbon fiber serving as a composite material reinforcement. The hollow carbon fiber felt epoxy resin composite material is prepared from a hollow carbon fiber felt and epoxy resin adhesive; and the method comprises the following steps of: placing urea and carbon powder in a graphite crucible; preparing the hollow carbon fiber felt in an atmosphere sintering furnace; placing the hollow carbon fiber felt in a mould; sealing the mould and pouring the epoxy resin adhesive consisting of bisphenol A epoxy resin, acetone and diethylenetriamine into the mould under vacuum; and pressing the mould and drying the mould under vacuum to obtain the hollow carbon fiber felt epoxy resin composite material. The hollow carbon fiber felt is self-woven and the density of the composite material is only 0.92 to 0.94g / cm<3>, so the material can be used for spacecrafts, artificial satellites, space shuttles and missiles.

Description

technical field [0001] The invention relates to a carbon fiber epoxy resin composite material and a preparation method thereof. Background technique [0002] Carbon fiber composite materials have ultra-high tensile strength, elastic modulus and thermal conductivity, low thermal expansion coefficient, excellent anti-ablation and anti-oxidation properties, making carbon fiber composite materials the basic structure of the aerospace industry. Materials, structural components and thermal protection materials of spacecraft made of carbon fiber composite materials can meet harsh environmental requirements. However, the quality of composite materials has become a major bottleneck restricting the performance of aircraft. A little reduction in the mass of the aircraft can save fuel, speed up and extend the range. For example, if a long-range missile is reduced by 1 kg, the range can be increased by 7.7 kilometers, and when the final rocket is reduced by 1 kg, the total launch weigh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/02C08K13/06C08K9/04C08K7/06C08K5/17B29C39/10B29C39/42B29C39/44
Inventor 温广武于洪明黄小萧钟博张晓东张涛白宏伟
Owner HARBIN INST OF TECH
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