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A method and product for enhancing the performance of carbon fiber-polymer composite materials

A composite material and carbon fiber technology, applied in metal material coating process, gaseous chemical plating, coating, etc., can solve the problem of deteriorating carbon fiber-polymer composite material performance, limited enhancement of composite material mechanical properties, fiber structure and performance Destruction and other problems, to achieve the effect of improving the interface bonding force, significant mechanical strength, and enhanced mechanical strength

Inactive Publication Date: 2017-09-12
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Depositing whiskers (such as silicon carbide, silicon nitride, etc.) on the fiber surface generally adopts high-temperature chemical vapor deposition (CVD), but due to the high temperature of whisker growth, the in-plane structure and performance of the fiber are severely damaged and deteriorated. Final carbon fiber-polymer composite properties
Recently, researchers used CVD to deposit carbon nanotubes on the surface of carbon fibers. Because the growth temperature was too high and the catalyst would react with the fibers, the interfacial shear strength of the composite material was only increased by about 15%.
However, if the deposition and growth temperature of carbon nanotubes is lowered, the enrichment density of carbon nanotubes on the surface of carbon fibers is very low and the distribution is uneven, so the degree of enhancement of the mechanical properties of composite materials is very limited.

Method used

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  • A method and product for enhancing the performance of carbon fiber-polymer composite materials
  • A method and product for enhancing the performance of carbon fiber-polymer composite materials
  • A method and product for enhancing the performance of carbon fiber-polymer composite materials

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Experimental program
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Effect test

Embodiment 1

[0041] A method for enhancing the performance of carbon fiber-polymer composite materials, characterized in that:

[0042] 1) Using carbon fiber, carbon source gas and hydrogen as raw materials;

[0043] 2) Place the carbon fibers in plasma-enhanced chemical vapor deposition equipment; the model of the plasma-enhanced chemical vapor deposition equipment is BTF-1200C, the length of the high-temperature zone is 600mm, and the pipe diameter is 100mm;

[0044] 3) Adjust the parameters of plasma-enhanced chemical vapor deposition equipment: adjust the RF power to 200W, and gradually increase the temperature from room temperature to 750°C in 40 minutes, H 2 The flow rate is 10sccm;

[0045] 4) Keep the temperature and H 2 The flow rate is constant, and annealed for 60 minutes;

[0046] 5) Keep H 2 The flow rate is constant, and the temperature is raised to 800°C in 5 minutes;

[0047] 6) Keep the temperature constant, while feeding carbon source gas and H 2 , adjust H 2 :CH ...

Embodiment 2

[0052] A method for enhancing the performance of carbon fiber-polymer composite materials, characterized in that:

[0053] 1) Using carbon fiber, carbon source gas and hydrogen as raw materials;

[0054] 2) Place the carbon fibers in plasma-enhanced chemical vapor deposition equipment; the model of the plasma-enhanced chemical vapor deposition equipment is BTF-1200C, the length of the high-temperature zone is 600mm, and the pipe diameter is 100mm;

[0055] 3) Adjust the parameters of plasma-enhanced chemical vapor deposition equipment: adjust the RF power to 200W, and gradually increase the temperature from room temperature to 700°C in 40 minutes, H 2 The flow rate is 10sccm;

[0056] 4) Keep the temperature and H 2 The flow rate is constant, and annealed for 60 minutes;

[0057] 5) Keep H 2 The flow rate remains unchanged, and the temperature is raised to 750°C in 15 minutes;

[0058] 6) Keep the temperature constant, while feeding carbon source gas and H 2 , adjust H ...

Embodiment 3

[0063] A method for enhancing the performance of carbon fiber-polymer composite materials, characterized in that:

[0064] 1) Using carbon fiber, carbon source gas and hydrogen as raw materials;

[0065] 2) Place the carbon fibers in plasma-enhanced chemical vapor deposition equipment; the model of the plasma-enhanced chemical vapor deposition equipment is BTF-1200C, the length of the high-temperature zone is 600mm, and the pipe diameter is 100mm;

[0066] 3) Adjust the parameters of plasma-enhanced chemical vapor deposition equipment: adjust the RF power to 200W, and gradually increase the temperature from room temperature to 700°C in 40 minutes, H 2 The flow rate is 15sccm;

[0067] 4) Keep the temperature and H 2 The flow rate is constant, and annealed for 60 minutes;

[0068] 5) Keep H 2 The flow rate remains unchanged, and the temperature is raised to 950°C in 25 minutes;

[0069] 6) Keep the temperature constant, while feeding carbon source gas and H 2 , adjust H ...

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Abstract

The invention discloses a method for enhancing properties of a carbon fiber-high polymer composite material and a product thereof. Under the condition of not influencing the properties of the carbon fiber, a plasma reinforced chemical vapor deposition process is adopted to grow and deposit a graphene wall (carbon fiber-graphene wall composite material) on the carbon fiber surface in a low-temperature environment; and the advantages of high mechanical strength and large specific area of the graphene wall are utilized to effectively improve the interface binding force between the carbon fiber and high polymer and greatly enhance the mechanical strength of the carbon fiber-high polymer composite material.

Description

technical field [0001] The invention relates to a method for using a graphene wall to enhance the mechanical properties of a carbon fiber-polymer composite material, and at the same time relates to the carbon fiber-polymer composite material obtained by the method. Background technique [0002] Carbon fiber is a new type of fiber material with high strength and high modulus fiber containing more than 95% carbon. It has many excellent properties: carbon fiber has high axial strength and modulus, low density, high specific performance, no creep, ultra-high temperature resistance in non-oxidizing environment, and good fatigue resistance. It is an important material in both national defense and civilian use. [0003] However, even if high-strength fibers are combined with suitable polymer materials, high-strength composites may not necessarily be obtained, because the interface properties between the fibers and the matrix play a key role in the final performance of the composit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08L33/00C08L61/20C08L63/00C08L75/04C08L69/00C08L77/02C08L79/08C08L61/06C08K9/02C08K7/06C23C16/26
Inventor 李朝龙高天鹏张恒姜浩史浩飞杜春雷
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI