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Porous carbon nanofiber/special engineering plastic composite and preparation method thereof

A technology of special engineering plastics and nano-carbon fibers, which is applied in the fields of fiber chemical characteristics, chemical post-treatment of rayon, textiles and papermaking, etc. It can solve the problems of inability to infiltrate and improve material properties, and achieve improved infiltration and good chemical stability. , Improve the effect of permeability

Inactive Publication Date: 2018-07-20
广州市新稀冶金化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the micropores generally produced by calcination cannot improve the performance of the material due to the inability to infiltrate
At the same time, there are few reports on the preparation of composite materials with high strength, high modulus and excellent mechanical properties by combining porous nano-carbon fibers with special engineering plastics.

Method used

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  • Porous carbon nanofiber/special engineering plastic composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]The method for preparing porous nano-carbon fiber / special engineering plastic composite material in this embodiment specifically includes the following steps:

[0035] Step (1): Mix polyacrylonitrile, pore-forming agent, tubular nano halloysite and N,N-dimethylformamide to prepare spinning solution;

[0036] Step (2): Electrospinning is carried out using the spinning solution prepared in step (1), followed by carbonization, and then washed with hot alkali and dried to obtain porous nano-carbon fibers;

[0037] Step (3): Disperse the porous nano-carbon fibers prepared in step (2) in a concentrated acid solution, transfer to deionized water after cooling, stir, centrifuge, remove the supernatant, and continue to wash with deionized water until The pH of the supernatant is neutral, and the porous carbon nanofibers with surface acidification are prepared;

[0038] Step (4): impregnating the surface-acidified porous carbon nanofibers prepared in step (3) into a resin matrix ...

Embodiment 2

[0055] The method for preparing porous nano-carbon fiber / special engineering plastic composite material in this embodiment specifically includes the following steps:

[0056] Step (1): Mix polyacrylonitrile, pore-forming agent, tubular nano halloysite and N,N-dimethylformamide to prepare spinning solution;

[0057] Step (2): Electrospinning is carried out using the spinning solution prepared in step (1), followed by carbonization, and then washed with hot alkali and dried to obtain porous nano-carbon fibers;

[0058] Step (3): Disperse the porous nano-carbon fibers prepared in step (2) in a concentrated acid solution, transfer to deionized water after cooling, stir, centrifuge, remove the supernatant, and continue to wash with deionized water until The pH of the supernatant is neutral, and the porous carbon nanofibers with surface acidification are prepared;

[0059] Step (4): impregnating the surface-acidified porous carbon nanofibers prepared in step (3) into a resin matrix...

Embodiment 3

[0076] The method for preparing porous nano-carbon fiber / special engineering plastic composite material in this embodiment specifically includes the following steps:

[0077] Step (1): Mix polyacrylonitrile, pore-forming agent, tubular nano halloysite and N,N-dimethylformamide to prepare spinning solution;

[0078] Step (2): Electrospinning is carried out using the spinning solution prepared in step (1), followed by carbonization, and then washed with hot alkali and dried to obtain porous nano-carbon fibers;

[0079] Step (3): Disperse the porous nano-carbon fibers prepared in step (2) in a concentrated acid solution, transfer to deionized water after cooling, stir, centrifuge, remove the supernatant, and continue to wash with deionized water until The pH of the supernatant is neutral, and the porous carbon nanofibers with surface acidification are prepared;

[0080] Step (4): impregnating the surface-acidified porous carbon nanofibers prepared in step (3) into a resin matrix...

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Abstract

The invention relates to a porous carbon nanofiber / special engineering plastic composite and a preparation method of the porous carbon nanofiber / special engineering plastic composite. The preparationmethod of the porous carbon nanofiber / special engineering plastic composite comprises the following steps: mixing polyacrylonitrile, a pore forming material, tubular nano-sized halloysite and N,N-dimethylformamide, preparing a spinning solution; carrying out electrostatic spinning, carbonizing, washing with thermokalite, drying to obtain the porous carbon nanofiber; acidizing the surface to prepare the surface acidized porous carbon nanofiber; soaking in a resin matrix to prepare a porous carbon nanofiber preform; dissolving a special engineering plastic into an organic solvent to prepare an electrostatic spinning solution, directly spinning on the porous carbon nanofiber preform, preparing a porous carbon nanofiber preform comprising multiple layers of nano-sized fibrofelts, spreading, preparing a porous carbon nanofiber preform / special engineering plastic preform comprising a nanofiber sandwich structure, and curing through a forming process. Compared with the prior art, the preparation process is simple, and the prepared composite is excellent in tensile property and bending property.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a porous nano-carbon fiber / special engineering plastic composite material and a preparation method thereof. Background technique [0002] At present, the resin matrix of advanced composite materials is developing in the direction of high bending performance, high strength and high temperature resistance. Carbon fiber has been widely used in composite materials due to its unique structure and characteristics. Carbon fiber and its composite materials are chemical fibers with excellent properties such as high strength, high modulus, high temperature resistance, corrosion resistance, fatigue resistance, creep resistance, electrical conductivity and heat transfer, and are new materials with dual purposes of structural materials and functional materials. Widely used in aerospace, nuclear industry, building materials, sporting goods and other fields. [0003] Among them, car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/06C08L79/08C08L61/16C08K9/02C08K7/24D01F9/22D01F1/10D01F11/16
CPCC08K7/24C08K9/02C08K2201/001C08K2201/011C08L81/06D01F1/10D01F9/22D01F11/16C08L79/08C08L61/16C08L61/06
Inventor 钟学群刘民杨慧雅陈建山杨雪英
Owner 广州市新稀冶金化工有限公司
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