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A kind of preparation method of high toughness, high strength carbon nanotube/epoxy resin composite material

A technology of carbon nanotubes and epoxy resin, which is applied in the field of preparation of high-toughness, high-strength carbon nanotubes/epoxy resin composite materials, can solve the problems of difficult industrial production of carbon nanotubes, broken carbon nanotube graphitization structure, Reduce thermal conductivity, electrical conductivity and other problems, achieve significant application value, and simple preparation process

Active Publication Date: 2022-06-28
FUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as mentioned above, chemically modified carbon nanotubes are not only difficult to produce industrially, but also destroy the graphitized structure of carbon nanotubes, reducing their thermal and electrical properties.

Method used

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  • A kind of preparation method of high toughness, high strength carbon nanotube/epoxy resin composite material
  • A kind of preparation method of high toughness, high strength carbon nanotube/epoxy resin composite material
  • A kind of preparation method of high toughness, high strength carbon nanotube/epoxy resin composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 0.5 g of carbon nanotubes to 1 L of water, drop 3 g of dispersant epoxy-terminated polyether polysiloxane (polydimethylsiloxane segment: 500 g / mol, epoxy polyether segment: 500 g) / mol) and ultrasonically dispersed to obtain a black carbon nanotube water dispersion. Filtration through a nylon filter membrane and drying to obtain epoxy-terminated polyether polysiloxane surface-modified carbon nanotubes.

[0026] 0.5 g of epoxy-terminated polyether polysiloxane surface-modified carbon nanotubes, 2 g of epoxy-terminated polyether polysiloxane, 100 g of bisphenol A epoxy resin (bisphenol A glycidyl ether). ) and 25 g of polyetheramine D230, and stirred at high speed for 30 minutes to obtain a black slurry epoxy resin mixture.

[0027] The mixture was put into an oven, vacuumed for 10 minutes, and after removing the bubbles introduced by stirring, poured into a mold for curing reaction. The curing conditions are: curing at 30° C. for 60 minutes, heating up to 60° C. fo...

Embodiment 2

[0029] Add 1 g of carbon nanotubes to 1 L of water, drop 6 g of dispersant epoxy-terminated polyether polysiloxane (polydimethylsiloxane segment: 1000 g / mol, epoxy polyether segment: 500 g / mol) mol) and ultrasonically dispersed to obtain a black carbon nanotube water dispersion. Filtration through a nylon filter membrane and drying to obtain epoxy-terminated polyether polysiloxane surface-modified carbon nanotubes.

[0030] 0.8 g of epoxy-terminated polyether polysiloxane surface-modified carbon nanotubes, 2 g of epoxy-terminated polyether polysiloxane, 100 g of bisphenol A epoxy resin (bisphenol A glycidyl ether ) and the curing agent methylhexahydrophthalic anhydride of 85g and 1.5g mass parts of 2,4,6-tris (dimethylaminomethyl) phenol were mixed, stirred at high speed for 30 minutes to obtain black slurry epoxy resin mixture.

[0031] The mixture was put into an oven, vacuumed for 10 minutes, and after removing the bubbles introduced by stirring, poured into a mold for cu...

Embodiment 3

[0033] Add 1.5 g of carbon nanotubes to 1 L of water, drop 8 g of dispersant epoxy-terminated polyether polysiloxane (polydimethylsiloxane segment: 3000 g / mol, epoxy polyether segment: 1000 g) / mol) ultrasonic dispersion to obtain a black carbon nanotube water dispersion. Filtration through a nylon filter membrane and drying to obtain epoxy-terminated polyether polysiloxane surface-modified carbon nanotubes.

[0034] 1 g of epoxy-terminated polyether polysiloxane surface-modified carbon nanotubes, 2 g of epoxy-terminated polyether polysiloxane, and 100 g of bisphenol A epoxy resin (bisphenol A glycidyl ether) Mix with 25 g of curing agent diethyltoluenediamine, and stir at high speed for 30 minutes to obtain a black slurry epoxy resin mixture.

[0035] The mixture was put into an oven, vacuumed for 10 minutes, and after removing the bubbles introduced by stirring, poured into a mold for curing reaction. The curing conditions are as follows: curing at 120° C. for 1 hour, heat...

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Abstract

The invention discloses a preparation method of a high-toughness and high-strength carbon nanotube / epoxy resin composite material, which belongs to the field of polymer composite materials. The method is to use block copolymer-epoxy-terminated polyether polysiloxane as a dispersant for carbon nanotubes, and to coat the surface of epoxy-terminated polyether polysiloxane to make carbon nanotubes The tubes are uniformly dispersed in the epoxy resin, at the same time, the organosilicon and polyether flexible chain structure in its block structure and the carbon nanotubes synergistically toughen the epoxy resin to prepare a high toughness, high strength carbon nanotube / epoxy resin composite material. The preparation process of the invention has no organic solvent, is green and environment-friendly, has simple operation and moderate conditions, can be applied to epoxy resins of conventional grades on the market, and meets the needs of large-scale production. The high toughness, high strength and excellent comprehensive performance of the carbon nanotube / epoxy resin composite material make it have great market application value in the fields of machinery industry, building materials, electronic appliances, aerospace and the like.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, in particular to a preparation method of a high toughness and high strength carbon nanotube / epoxy resin composite material. Background technique [0002] Epoxy resin is a thermosetting resin with good comprehensive properties, which is widely used in electronic packaging, construction, aerospace and other fields. However, epoxy resin still has some shortcomings in use, such as mechanical strength, toughness, thermal conductivity, dielectric and other properties are still insufficient, which limits the further application of epoxy resin in various fields. Therefore, the reinforced modification of epoxy resin has great market value. [0003] Carbon nanotubes are considered as good fillers for the reinforcement and modification of polymer materials due to their one-dimensional nanostructure and excellent properties (Coleman, et al. Carbon 2006, 44, 1624-1652; Punetha, et al. Prog. Polym. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/02C08K9/08C08K3/04
CPCC08K9/08C08K3/041C08K2201/011C08L63/00
Inventor 夏志强卓东贤王睿陈少云瞿波吴清实
Owner FUZHOU UNIV
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