Preparation method for on-thread and continuously growing carbon nanotubes on surface of carbon fiber

A carbon nanotube and surface growth technology, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc., can solve the problems of complex growth process, small scale, high cost, etc., and achieve the goal of solving complex growth process, improving surface activity and promoting development Effect

Active Publication Date: 2019-05-24
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can overcome the deficiencies of the existing technology and solve the problems of complex growth process, high cost and small scale, etc., by cracking C 2 h 2 To explore the possibility of carbon nanotube synthesis, more importantly, the

Method used

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  • Preparation method for on-thread and continuously growing carbon nanotubes on surface of carbon fiber
  • Preparation method for on-thread and continuously growing carbon nanotubes on surface of carbon fiber
  • Preparation method for on-thread and continuously growing carbon nanotubes on surface of carbon fiber

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Step 1: Electrochemically modify the carbon fiber to promote the uniform coating of the catalyst precursor, the electrochemical anodization time is 40s, and the current intensity is 0.2A;

[0055] Step 2: Immerse the carbon fiber in 0.03mol / L catalyst precursor (Co(NO 3 ) 2 ) for 5 minutes;

[0056] Step 3: Pull the carbon fiber obtained in step 2 into the tube furnace, 2 Atmosphere, using H 2 Reducing the catalyst precursor coating to metal nanoparticles, the reduction temperature is 450°C, and the reduction time is 10 minutes;

[0057] Step 4: continue to extend the carbon fiber sample obtained in step 3 into the chemical vapor deposition furnace, and pass H 2 and C 2 h 2 The mixed gas was used to synthesize carbon nanotubes at 650 °C, and finally the samples were collected by an electric winder.

[0058] The samples were tested for fiber tensile strength and interfacial shear strength, and the measured tensile strength of the carbon fiber was 3.80GPa, and the ...

Embodiment 2

[0060] Step 1: Electrochemically modify the carbon fiber to promote the uniform coating of the catalyst precursor, the electrochemical anodization time is 60s, and the current intensity is 0.2A;

[0061] Step 2: Immerse the carbon fiber in 0.03mol / L catalyst precursor (Co(NO 3 ) 2 ) for 10 minutes;

[0062] Step 3: Pull the carbon fiber obtained in step 2 into the tube furnace, 2 Atmosphere, using H 2 Reducing the catalyst precursor coating to metal nanoparticles, the reduction temperature is 450°C, and the reduction time is 10 minutes;

[0063] Step 4: continue to extend the carbon fiber sample obtained in step 3 into the chemical vapor deposition furnace, and pass H 2 and C 2 h 2 The mixed gas was used to synthesize carbon nanotubes at 650 °C, and finally the samples were collected by an electric winder.

[0064] The samples were tested for fiber tensile strength and interfacial shear strength, and the measured tensile strength of the carbon fiber was 3.82GPa, and the...

Embodiment 3

[0066] Step 1: Electrochemically modify the carbon fiber to promote the uniform coating of the catalyst precursor, the electrochemical anodization time is 60s, and the current intensity is 0.2A;

[0067] Step 2: Immerse the carbon fiber in 0.04mol / L catalyst precursor (Co(NO 3 ) 2 ) for 15 minutes;

[0068] Step 3: Pull the carbon fiber obtained in step 2 into the tube furnace, 2 Atmosphere, using H 2 Reducing the catalyst precursor coating to metal nanoparticles, the reduction temperature is 450°C, and the reduction time is 10 minutes;

[0069] Step 4: continue to extend the carbon fiber sample obtained in step 3 into the chemical vapor deposition furnace, and pass H 2 and C 2 h 2 The mixed gas was used to synthesize carbon nanotubes at 650 °C, and finally the samples were collected by an electric winder.

[0070] The samples were tested for fiber tensile strength and interfacial shear strength, and the measured tensile strength of the carbon fiber was 3.88GPa, and the...

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Abstract

The invention relates to a preparation method for on-thread and continuously growing carbon nanotubes on the surface of carbon fiber. The method specifically comprises the steps of performing surfaceelectrochemical anodic oxidation treatment on the carbon fiber, then immersing the treated carbon fiber in Co(NO3)2 solution, inletting hydrogen into a tube furnace to reduce metal salts on the surface of the carbon fiber into elementary metals, then placing the reduced carbon fiber into a chemical vapor deposition furnace, and under protection of hydrogen, performing acetylene pyrolysis at 500-800 DEG C and producing the carbon nanotubes on the surface of the carbon surface with the catalysis of the elementary metals to obtain a carbon fiber-reinforced polymer composite material with the surface loaded with the carbon nanotubes. The carbon nanotubes are multi-walled and the tube walls are basically parallel to the axes of the nanotubes, the multi-walled carbon nanotubes are composed of layered graphite structures, the spacing between the tube walls is small, and the carbon nanotubes of the carbon fiber are uniform in distribution and intertwined with one another to increase the layering resistance and the penetration thickness.

Description

technical field [0001] The invention belongs to the field of growing carbon nanotubes on the surface of carbon fibers, and in particular relates to a preparation method for continuously growing carbon nanotubes online on the surface of carbon fibers. Background technique [0002] Carbon fiber reinforced polymer composites are widely used in aerospace, electronic products, sports equipment and many other fields, and have received extensive attention from composite material researchers. Excellent specific strength and specific stiffness can be easily achieved in their applications, however, the performance of carbon fiber reinforced polymer composites depends largely on the interfacial properties, and delamination is the key weakness for composites to fail. According to the current study, by inserting nanoscale reinforcements, the delamination resistance and through-thickness properties of the composites can be improved, while maintaining the high stiffness and strength of the...

Claims

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Application Information

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IPC IPC(8): D06M11/74D06M101/40
Inventor 王延相秦建杰王成国魏化震路瑞佼苏顺生
Owner SHANDONG UNIV
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