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Method for preparing carbon nano fiber and carbon nano tube modified carbon fiber/bismaleimide resin multi-dimensional hybrid composite material

A maleimide resin and carbon nanotube modification technology, 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 achieve the improvement of comprehensive mechanical properties and interface bonding. Strong and improve the effect of insufficient interlayer shear strength

Inactive Publication Date: 2011-04-13
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 carbon nano fiber and carbon nano tube modified carbon fiber/bismaleimide resin multi-dimensional hybrid composite material
  • Method for preparing carbon nano fiber and carbon nano tube modified carbon fiber/bismaleimide resin multi-dimensional hybrid composite material
  • Method for preparing carbon nano fiber and carbon nano tube modified carbon fiber/bismaleimide resin multi-dimensional hybrid composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0030] Example 1: Multi-walled carbon nanotubes (OD<8nm), carbon nanofibers, and carbon fibers prepared by an arc discharge method are used as initial raw materials, and the multi-walled carbon nanotubes are purified, and the carbon nanotubes, carbon nanofibers, and carbon fibers are acidified, respectively, After acyl chlorination and amination, the carbon nanotubes and carbon nanofibers are subjected to Michael addition reaction with m-phenylene bismaleimide respectively, and then the multi-walled carbon nanofibers with m-phenylene bismaleimide attached to the surface are obtained. carbon nanotubes and carbon nanofibers, and then mechanically composite them with aminated carbon fibers to obtain carbon nanofibers and carbon nanotube modified carbon fiber / bismaleimide resin multidimensional hybrid composites.

[0031] 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 aci...

Embodiment 2

[0039] Example 2: Single-walled carbon nanotubes (OD<8nm) prepared by chemical vapor deposition were used as the initial raw material, and the single-walled carbon nanotubes were purified. After oxidation, the carbon nanotubes and carbon nanofibers were subjected to Michael addition reaction with N-methylphthalimide respectively, and then the single-walled carbon nanofibers with N-methylphthalimide attached to the surface were obtained. carbon nanotubes and carbon nanofibers, and compound them with aminated carbon fibers in a certain way to obtain carbon nanofibers and carbon nanotube modified carbon fiber / bismaleimide resin multidimensional hybrid composites.

[0040] 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, 200mL, 20% weight concentration of sulfuric acid, 12 hours with 120kHz ultrasonic treatment, and then heated to React at 180°C for 48 hours, filter with ψ0.8μm p...

Embodiment 3

[0047] Example 3: Single-walled carbon nanotubes (OD<8nm) prepared by laser evaporation method were used as the initial raw material. The single-walled carbon nanotubes were purified, acidified, acyl chlorinated, and aminated. Carbon nanofibers and carbon fibers were acidified and acyl chlorinated. After amination, the surface aminated single-walled carbon nanotubes and carbon nanofibers will be obtained, and then undergo Michael addition reaction with 4, 4′-bismaleimide diphenylmethane to obtain surface-bound 4, 4 Carbon nanotubes and carbon nanofibers of '-bismaleimide-based diphenylmethane are combined with carbon fibers in a certain way to obtain carbon nanofibers and carbon nanotube-modified carbon fiber / bismaleimide resin multidimensional hybrid composite materials.

[0048] 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, ...

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Abstract

The invention belongs to the technical field of nano materials, and particularly relates to a method for preparing a carbon nano fiber and carbon nano tube modified carbon fiber / bismaleimide resin multi-dimensional hybrid composite material. The method comprises the following steps of: performing surface carboxylation, acylation and chloration on carbon nano tubes, carbon nano fibers and carbon fibers, then introducing diamine or polyamine onto the carbon nano tubes, performing Michael addition reaction on the carbon nano tubes connected with the amine and bismaleimide resin to obtain a bismaleimide resin linear block polymer containing the carbon nano tubes and serving as a matrix, and compounding the matrix and the carbon fibers to form a covalent bond connected multi-dimensional hybrid composite material structure. The method toughens bismaleimide by using the strength and toughness of the carbon nano tubes and the carbon nano fibers to improve the bonding strength of the carbon fiber interface so as to improve the integral performance of the carbon nano fiber and carbon nano tube modified carbon fiber / bismaleimide resin multi-dimensional hybrid composite material and broaden the application range of the carbon fibers, the carbon nano fibers, the carbon nano tubes and the bismaleimide resin.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a preparation method of carbon nanofiber and carbon nanotube modified carbon fiber / bismaleimide resin multidimensional 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 desi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08K9/04C08K7/00C08K3/04C08K7/06C08G73/12
Inventor 邱军王宗明
Owner TONGJI UNIV
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