Preparation method for in-situ synthesis of CNT (carbon nano tube) modified carbon fiber reinforced resin structure-damping composite material

A technology of carbon nanotube modification and damping composite materials, which is applied in the direction of carbon fiber, fiber treatment, metal material coating technology, etc., can solve the problems of complex repair process of carbon fiber composite materials, reduce system stability, and material fatigue damage, etc., to achieve Good application prospects, strong repeatability, and the effect of improving damping performance

Inactive Publication Date: 2018-08-03
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, carbon fiber composite materials also have some disadvantages as structural materials: 1. The damping performance of carbon fiber composite materials is poor. Under the action of cyclical loads, it is easy to cause fatigue damage to the material and reduce the stability of the system.
2. The repair process of carbon fiber composite materials is complex
Carbon nanotubes can be effectively modified on the surface of carbon fibers by chemical vapor deposition, but the commonly used chemical vapor deposition process is cumbersome and toxic liquid carbon sources and catalyst precursor solutions are used in the process, so we need to find more A simple, safe and green method to uniformly modify carbon nanotubes onto the surface of carbon fibers

Method used

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  • Preparation method for in-situ synthesis of CNT (carbon nano tube) modified carbon fiber reinforced resin structure-damping composite material
  • Preparation method for in-situ synthesis of CNT (carbon nano tube) modified carbon fiber reinforced resin structure-damping composite material
  • Preparation method for in-situ synthesis of CNT (carbon nano tube) modified carbon fiber reinforced resin structure-damping composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Soak the carbon fiber in an acetone solution, let it stand for 8 hours, take out the carbon fiber and place it in deionized water for 30 minutes, then clean it with deionized water and dry it in an environment of 90 °C for 8 hours; 0.202g of Fe(NO 3 ) 3 Dissolve in 100ml of absolute ethanol and stir for 30 minutes; apply the prepared solution on the surface of the dried carbon fiber, and then place the carbon fiber at 90°C for 30 minutes; place the dried carbon fiber in a tube furnace , then pass Ar into the tube furnace at 240 sccm, raise the temperature of the furnace at 10°C / min to 250°C and stop feeding Ar, put H 2 Pass it into the tube furnace at 150 sccm and keep it warm for 1 hour, raise the temperature of the furnace to 450°C at 10°C / min and keep it warm for 1 hour in an atmosphere, stop passing H 2 , Ar is passed into the tube furnace at 240 sccm, the furnace temperature is raised to 600 °C at 10 °C / min, and then C 2 h 2 , and keep warm for 1 hour. The carb...

Embodiment 2

[0025] Soak the carbon fiber in an acetone solution, let it stand for 8 hours, take out the carbon fiber and place it in deionized water for 30 minutes, and then clean it with deionized water and dry it in an environment of 90°C for 8 hours; 0.404g of Fe(NO 3 ) 3 Dissolve in 100ml of absolute ethanol and stir for 30 minutes; apply the prepared solution on the surface of the dried carbon fiber, and then place the carbon fiber at 90°C for 30 minutes; place the dried carbon fiber in a tube furnace , then pass Ar into the tube furnace at 240 sccm, raise the temperature of the furnace at 10°C / min to 250°C and stop feeding Ar, put H 2 Pass it into the tube furnace at 150 sccm and keep it warm for 1 hour, raise the temperature of the furnace to 450°C at 10°C / min and keep it warm for 1 hour in an atmosphere, stop passing H 2 , Ar is passed into the tube furnace at 240 sccm, the furnace temperature is raised to 600 °C at 10 °C / min, and then C 2 h 2 , and keep warm for 1 hour. The c...

Embodiment 3

[0027] Soak the carbon fiber in an acetone solution, let it stand for 8 hours, take out the carbon fiber and place it in deionized water for 30 minutes of ultrasonication, then clean it with deionized water and dry it in an environment of 90°C for 8 hours; 0.808g of Fe(NO 3 ) 3 Dissolve in 100ml of absolute ethanol and stir for 30 minutes; apply the prepared solution on the surface of the dried carbon fiber, and then place the carbon fiber at 90°C for 30 minutes; place the dried carbon fiber in a tube furnace , then pass Ar into the tube furnace at 240 sccm, raise the temperature of the furnace at 10°C / min to 250°C and stop feeding Ar, put H 2 Pass it into the tube furnace at 150 sccm and keep it warm for 1 hour, raise the temperature of the furnace to 450°C at 10°C / min and keep it warm for 1 hour in an atmosphere, stop passing H 2 , Ar is passed into the tube furnace at 240 sccm, the furnace temperature is raised to 600 °C at 10 °C / min, and then C 2 h 2 , and keep warm for...

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Abstract

The invention relates to a preparation method for in-situ synthesis of a CNT (carbon nano tube) modified carbon fiber reinforced resin structure-damping composite material. The preparation method comprises following steps: 1), the surfaces of carbon fibers are degummed; 2), a catalyst precursor solution is prepared from Fe(NO3)3 as a precursor of a nano-metal catalyst; 3), the carbon fibers are soaked in the catalyst precursor solution for 0.5-1 h, and then the carbon fibers are taken out and dried for 0.5-1 h at the temperature of 90-120 DEG C; 4), the dried carbon fibers are put in a tube furnace and heated to 250-450 DEG C under the condition of 240-400 sccm argon, are subjected to thermal-insulating reduction for 2-4 h under the condition of 150-200 sccm hydrogen and are heated to 560-800 DEG C under the condition of 240-400 sccm argon, and the carbon fibers are subjected to thermal insulation for 0.5-1 h with introduction of 20-40 sccm acetylene.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a method for in-situ synthesis of carbon nanotubes on the surface of carbon fibers. Background technique [0002] Damping materials are the current research hotspots. Compared with other damping materials, carbon fiber composites have the following advantages: 1. The tensile strength of epoxy resin composites is as high as 3500Mpa or more. 2. And carbon fiber has high specific strength and high specific modulus, and its specific strength is as high as 2000Mpa / (g / cm3). 3. Compared with metal damping materials, it has excellent corrosion resistance and good processability. However, carbon fiber composite materials also have some disadvantages as structural materials: 1. The damping performance of carbon fiber composite materials is poor. Under the action of cyclical loads, it is easy to cause fatigue damage to the material and reduce the stability of the system. 2. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D06M11/65C08L63/00C08K9/02C08K7/06C08K3/04C23C16/26C23C16/02D06M101/40
CPCC08K3/041C08K7/06C08K9/02C08K2201/011C23C16/02C23C16/26D06M11/65D06M11/74D06M2101/40C08L63/00
Inventor 何芳闫德道赵乃勤师春生何春年李家俊刘恩佐马丽颖
Owner TIANJIN UNIV
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