Method for preparing hybrid composite material of carbon fibers/carbon nanotubes/bismaleimide resin

A technology of maleimide resin and bismaleimide, which is applied in the field of nanomaterials, can solve the problems of difficult uniform dispersion, easy agglomeration, and high surface energy of carbon nanotubes, and achieves increased interface strength and simple preparation method. Easy to implement, good effect of interlaminar shear strength

Inactive Publication Date: 2010-07-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon nanotubes have high surface energy and are prone to agglomeration, making it difficult to disperse uniformly in polymers

Method used

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  • Method for preparing hybrid composite material of carbon fibers/carbon nanotubes/bismaleimide resin
  • Method for preparing hybrid composite material of carbon fibers/carbon nanotubes/bismaleimide resin

Examples

Experimental program
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Effect test

Embodiment 1

[0028]Example 1: The multi-walled carbon nanotubes (OD<8nm) and carbon fibers prepared by the arc discharge method are used as the initial raw materials. After the multi-walled carbon nanotubes are purified, the carbon nanotubes and carbon fibers are acidified, chlorinated, and aminated, respectively. , the carbon nanotubes and m-phenylene bismaleimide are subjected to Michael addition reaction, and the multi-walled carbon nanotubes with m-phenylene bismaleimide on the surface are obtained, and then combined with aminated carbon fibers The cloth is composited in a certain way to obtain a multidimensional hybrid composite material containing carbon fiber / carbon nanotube / bismaleimide resin.

[0029] Step (1): In a 250mL single-neck round bottom flask equipped with a stirrer, add 1.1g of dried multi-walled carbon nanotube raw material and 100mL, 20% nitric acid solution, treat it under 120kHz ultrasonic wave for 10 hours, and then heat to 20°C, reacted for 48 hours, filtered thro...

Embodiment 2

[0037] Example 2: The single-walled carbon nanotubes (OD<8nm) prepared by chemical vapor deposition are used as the initial raw material, the single-walled carbon nanotubes are purified, and the carbon nanotubes and carbon fibers are acidified, chlorinated, and aminated, respectively. Carry out Michael addition reaction of carbon nanotubes and N-methylphthalimide, then obtain the single-walled carbon nanotubes with N-methylphthalimide on the surface, and then combine it with amino The compounded carbon fibers are compounded in a certain way to obtain a multi-dimensional hybrid composite material containing carbon fibers / carbon nanotubes / bismaleimide resin.

[0038] Step (1): In the 500mL single-necked round-bottomed flask equipped with a magnetic stirring rotor, add 1.1g single-walled carbon nanotube raw material, 100mL, 20% weight concentration of sulfuric acid, and use 120kHz ultrasonic treatment for 12 hours, then heat to React at 180°C for 48 hours, filter with a pore size...

Embodiment 3

[0045] Example 3: Single-walled carbon nanotubes (OD<8nm) prepared by laser evaporation as the initial raw material, single-walled carbon nanotubes are purified, acidified, acyl chlorinated, and aminated, and carbon fibers are acidified, acyl chlorinated, and aminated , to obtain surface aminated single-walled carbon nanotubes, and then carry out Michael addition reaction with 4,4'-bismaleimidodiphenylmethane, and then obtain 4,4'-bismaleimide on the surface The carbon nanotube of aminodiphenylmethane is compounded with carbon fiber cloth in a certain way to obtain a multidimensional hybrid composite material containing carbon fiber / carbon nanotube / bismaleimide resin.

[0046] Step (1): In the 500mL single-neck round bottom flask equipped with mechanical stirring, add 10g single-walled carbon nanotube raw material and 250mL, 20% weight concentration sulfuric acid solution, use 120kHz ultrasonic treatment for 80 hours, then heat and heat at 180 Stir and reflux at ℃, react for 4...

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Abstract

The invention belongs to the technical field of nano materials, and in particular relates to a method for preparing a hybrid composite material of carbon fibers/carbon nanotubes/bismaleimide resin. The method comprises the following steps: after carboxylating, acylating and chlorinating the surfaces of purified carbon nanotubes and dried carbon fibers, introducing diamine or polyamine with a feature structure thereon, wherein a large amount of the diamine or the polyamine are jointed on the surfaces of the carbon nanotubes and the carbon fibers; performing an addition reaction on the carbon nanotubes jointed with the amidogen and the bismaleimide resin to obtain a carbon nanotubes-containing bismaleimide resin linear block polymer serving as a substrate; and compositing the substrate and the carbon fibers in a certain mode to form a multi-dimensional hybrid composite material structure linked by covalent bonds finally. The method has the advantages of strengthening and toughening bismaleimide by using the strength and the toughness of the carbon nanotubes, improving the bonding strength between the bismaleimide and the carbon fiber substrate surface, improving overall performance of the multi-dimensional hybrid composite material of the carbon fibers/the carbon nanotubes/ the bismaleimide resin, and widening the application of the carbon fibers, the carbon nanotubes and the bismaleimide resin.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a carbon fiber / carbon nanotube / bismaleimide resin hybrid composite material. Background technique [0002] The development of advanced composite materials has a history of decades, and the application of high-performance matrix resins in the aviation and aerospace industries has also shown unique advantages and potentials. The development process of advanced composite material matrix resin from epoxy resin, thermoplastic resin, isocyanate resin (CE) to bismaleimide resin (BMI) and polyimide resin (PI). [0003] Bismaleimide (BMI) is a bifunctional compound with maleimide (MI) as the active terminal group. Bismaleimide (BMI) resin has better thermal stability, dimensional stability and fatigue resistance in high humidity and heat environment than epoxy resin, has a good molecular structure design, and is resistant to radiation, low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10
Inventor 邱军王宗明
Owner TONGJI UNIV
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