Epoxy resin-carbon nanotube composite material and preparation method thereof

A technology of carbon nanotubes and epoxy resin, which is applied in the field of epoxy resin carbon nanotube composite materials and its preparation, can solve the problems that it is difficult to uniformly disperse carbon nanotubes, and it is difficult to effectively improve the performance of epoxy resin, so as to achieve scale The effect of chemical implementation, low friction coefficient and simple preparation process

Inactive Publication Date: 2017-05-31
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the π-π interaction between carbon nanotubes and the high surface energy of carbon nanotubes, carbon nanotubes are prone to aggregation, making it difficult to simply achieve uniform dispersion of carbon nanotubes in epoxy resin. It is difficult to effectively improve the performance of epoxy resin

Method used

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  • Epoxy resin-carbon nanotube composite material and preparation method thereof
  • Epoxy resin-carbon nanotube composite material and preparation method thereof
  • Epoxy resin-carbon nanotube composite material and preparation method thereof

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preparation example Construction

[0029] The preparation method of a kind of epoxy resin carbon nanotube composite material provided by the embodiment of the present invention comprises:

[0030] mixing carbon nanotubes with aniline oligomers and / or aniline oligomer derivatives in a solvent to obtain a dispersion of carbon nanotubes,

[0031] uniformly mixing the dispersion of carbon nanotubes and epoxy resin to form a mixture, and then removing the solvent in the mixture to obtain an epoxy resin carbon nanotube composite;

[0032] And, uniformly mix the epoxy resin carbon nanotube compound and the epoxy curing agent.

[0033] In some embodiments, the preparation method includes: mixing carbon nanotubes with aniline oligomers and / or aniline oligomer derivatives in a solvent, and performing ultrasonic treatment to obtain a dispersion of carbon nanotubes.

[0034] In some embodiments, the preparation method may also include: stirring, ultrasonic, vibration and other physical means (such as mechanical stirring, ...

Embodiment 1

[0065] Embodiment 1 This embodiment relates to a preparation process of a 0.25wt% epoxy resin carbon nanotube composite material (the carbon nanotube content in the composite material is 0.25wt%), including:

[0066] Add p-phenylenediamine sulfate (8.87g) and aniline (5.56g) into a three-necked flask of 1M hydrochloric acid solution (500mL), and cool to -5°C. Then 150mL of ammonium persulfate (13.62g) hydrochloric acid (1M) solution was slowly added dropwise to the above reaction flask through the dropping funnel. Washed with deionized water to obtain a dark green solid product. Then the product was washed with 10% ammonia solution, and then washed twice with deionized water, and finally the product (aniline trimer) was dried in a vacuum oven at 40° C. for use.

[0067] Weigh aniline trimer (50mg), carbon nanotubes (100mg) and tetrahydrofuran (20mL), sonicate for one hour, add epoxy resin E44 (32g) to the above mixed solution, remove tetrahydrofuran by distillation under redu...

Embodiment 2

[0068] Embodiment 2 This embodiment relates to a preparation process of a 0.5wt% epoxy resin carbon nanotube composite material (the carbon nanotube content in the composite material is 0.5wt%), including:

[0069] Weigh aniline trimer (100mg), carbon nanotubes (200mg) and tetrahydrofuran (40mL), sonicate for one hour, add epoxy resin E44 (32g) to the above mixed solution, remove tetrahydrofuran by distillation under reduced pressure, and then add Epoxy curing agent polyetheramine D230 (8.0g), stir evenly, debubble in a vacuum oven at 50°C for 15 minutes, introduce the mixture into a preheated tetrafluoroethylene mold, put it in the oven for curing, and the curing conditions at 80° C. for 6 hours to finally obtain a 0.5 wt % epoxy resin carbon nanotube composite material.

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Abstract

The invention discloses an epoxy resin-carbon nanotube composite material and a preparation method thereof. The preparation method includes the following steps: carbon nanotubes, aniline oligomer and / or a derivative thereof are mixed in solvent, so that a carbon nanotube dispersion is obtained, the carbon nanotube dispersion and epoxy resin are uniformly mixed to form a mixture, the solvent in the mixture is then removed, and thereby an epoxy resin-carbon nanotube complex is obtained; and the epoxy resin-carbon nanotube complex and epoxy hardener are uniformly mixed. The epoxy resin-carbon nanotube composite material disclosed by the invention has excellent mechanical properties, high-temperature resistance and wear resistance, and can be used as an excellent self-lubricating polymer material, moreover, the preparation process is simple, material resources are wide, and the preparation method is favorable for large-scale implementation.

Description

technical field [0001] The invention specifically relates to an epoxy resin carbon nanotube composite material and a preparation method thereof, belonging to the field of polymer nanocomposite materials. Background technique [0002] Since its synthesis in 1930, epoxy resin (EP) has become the most widely used resin among thermosetting resins due to its excellent physical and mechanical properties, electrical insulation properties, thermal stability and chemical corrosion resistance. However, due to the three-dimensional network structure of epoxy resin after curing, it has the disadvantages of high crosslinking density, large internal stress, brittle quality, poor impact toughness, etc., so its application is also limited. [0003] Researchers have found that the preparation of epoxy resin nanocomposites by adding nano-fillers can significantly improve the comprehensive performance of epoxy resins, which has become a current research hotspot. Among them, carbon nanotubes (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/04C08K7/24C08K5/20
CPCC08K7/24C08K5/20C08K2201/011C08L2201/08C08L63/00C08L63/04
Inventor 赵海超李香玉陈佳覃松绿王立平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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