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Preparation method of carbon nano tube and functionalized carbon fiber reinforced bismaleimide resin matrix composite

A technology of bismaleimide resin and maleimide resin, 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 good interlayer shear strength , The preparation method is simple and easy to implement

Inactive Publication Date: 2011-07-13
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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  • Preparation method of carbon nano tube and functionalized carbon fiber reinforced bismaleimide resin matrix composite
  • Preparation method of carbon nano tube and functionalized carbon fiber reinforced bismaleimide resin matrix composite
  • Preparation method of carbon nano tube and functionalized carbon fiber reinforced bismaleimide resin matrix composite

Examples

Experimental program
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Effect test

Embodiment l

[0034] Example 1: Multi-walled carbon nanotubes (OD<8nm) and carbon fibers prepared by the arc discharge method are used as initial raw materials. After purification, acidification and amination, the multi-walled carbon nanotubes react with acidified carbon fibers. After a certain period of reaction , and then add decyl diamine to the system to fully aminate the carboxyl groups that have not completely reacted with the aminated carbon nanotubes on the surface of the carbon fiber, and the surface of the obtained carbon fiber is grafted with carbon nanotubes and decyl diamine, and then the carbon fiber and 4,4′-bismaleimidodiphenylmethane (BDM) prepolymerization reaction to obtain functionalized carbon fiber surface grafted with 4,4′-bismaleimidodiphenylmethane (BDM) Reinforcement; react aminated carbon nanotubes with 4,4'-bismaleimidodiphenylmethane (BDM) resin to obtain carbon nanotube-strengthened 4,4'-bismaleyl The matrix of imidodiphenylmethane (BDM) resin; finally, the sur...

Embodiment 2

[0044] Example 2: Single-walled carbon nanotubes (OD<8nm) prepared by chemical vapor deposition are used as the initial raw material. After purification, acidification and amination, the single-walled carbon nanotubes react with acidified carbon fibers. After a certain period of time, Then add hexamethylenediamine to the system to fully aminate the carboxyl groups that have not completely reacted with the aminated carbon nanotubes on the surface of the carbon fiber, and the surface of the obtained carbon fiber is grafted with carbon nanotubes and hexamethylenediamine, and then the carbon fiber and N- Methyl phthalimide prepolymerization reaction, the functionalized carbon fiber surface is grafted with N-methyl phthalimide reinforcement; aminated carbon nanotubes and N-methyl Phthalimide resin reacts to obtain the matrix of N-methylphthalimide resin reinforced by carbon nanotubes; finally, the functionalized carbon fiber surface obtained above is grafted with N-methyl-phthalimid...

Embodiment 3

[0054] Example 3: Single-walled carbon nanotubes (OD<8nm) prepared by laser evaporation method were used as the initial raw material. After purification, acidification and amination, the single-walled carbon nanotubes reacted with acidified carbon fibers. Add ethylenediamine to the system to fully aminate the carboxyl groups that have not completely reacted with the aminated carbon nanotubes on the surface of the carbon fiber, and the surface of the obtained carbon fiber is grafted with carbon nanotubes and ethylenediamine, and then the carbon fiber is mixed with 4, 4'-bismaleimido-diphenylmethane (BDM) resin prepolymerization reaction to obtain functionalized carbon fiber surface grafted with 4,4'-bismaleimido-diphenylmethane (BDM) resin Reinforcement; react aminated carbon nanotubes with 4,4'-bismaleimidodiphenylmethane (BDM) resin to obtain carbon nanotube-strengthened 4,4'-bismaleyl The matrix of imidodiphenylmethane (BDM) resin; finally, the surface of the functionalized ...

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Abstract

The invention relates to a preparation method of a carbon nano tube and functionalized carbon fiber reinforced bismaleimide resin matrix composite, which comprises the steps of: after a carbon nano tube is subjected to carboxylation, introducing diamine or polyamine on the carbon nano tube to obtain a surface aminated carbon nano tube; making the aminated carbon nano tube react with a carbon fiber subjected to surface carboxylation to obtain an aminated carbon fiber with the surface grafted with the carbon nano tube, introducing diamine or polyamine on the surface of the carbon fiber to ensure that carboxyl on the surface of the carbon fiber, which incompletely reacts with the aminated carbon nano tube, is fully aminated, carrying out polymerization on the carbon fiber and bismaleimide to obtain an reinforcement of the functionalized carbon fiber with the surface grafted with the toughened bismaleimide resin; making the aminated carbon nano tube react with the bismaleimide resin to obtain a matrix of the bismaleimide resin roughened by the carbon nano tube; and compounding the reinforcement of the obtained functionalized carbon fiber with the surface grafted with the bismaleimide resin with the matrix of bismaleimide resin roughened by the carbon nano tube to obtain a required product. The carbon fiber and the matrix resin are roughened by using the strength and flexibility of the carbon nano tube, the binding performance of the carbon fiber and the resin matrix is improved, the interface binding strength of the composite is increased, and therefore, the integral performance of the composite is enhanced.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a preparation method of carbon nanotubes and functionalized carbon fiber reinforced bismaleimide resin composite materials. Background technique [0002] Bismaleimide (BMI) resin, as one of the matrix of advanced composite materials, has good radiation resistance, low temperature resistance, processability, flame retardancy, electrical insulation, and better thermal stability than epoxy resin , dimensional stability and fatigue resistance under high humidity and heat environment, has now developed into another important matrix resin that can be used as advanced structural composite materials after epoxy resin, and the composite materials based on BMI will have a very broad prospect . [0003] Carbon fiber (CF) has very excellent mechanical properties, and has good high temperature resistance, corrosion resistance, friction resistance, fatigue resistance, low th...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08K9/04C08K9/02C08K7/06C08K7/00C08K3/04
Inventor 邱军王宗明
Owner TONGJI UNIV
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