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A kind of aramid fiber reinforced 3D graphene/epoxy resin composite material and its preparation method and application

A composite material and aramid fiber technology, applied in conductive materials dispersed in non-conductive inorganic materials, magnetic field/electric field shielding, electrical components, etc., can solve problems affecting the performance of composite materials, fragility, three-dimensional network structure damage, etc. , to achieve the effect of enhanced conductivity, high conductivity and simple operation

Active Publication Date: 2019-01-29
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, graphene airgel materials are relatively brittle and fragile during the processing of nanocomposites, and the three-dimensional network structure is destroyed, which will seriously affect the performance of composite materials. Therefore, it is necessary to enhance the mechanical properties of graphene airgel

Method used

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  • A kind of aramid fiber reinforced 3D graphene/epoxy resin composite material and its preparation method and application
  • A kind of aramid fiber reinforced 3D graphene/epoxy resin composite material and its preparation method and application
  • A kind of aramid fiber reinforced 3D graphene/epoxy resin composite material and its preparation method and application

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Embodiment 1

[0029] Graphite oxide can be prepared by the following method: Add 300 mesh flake graphite into a 1000mL three-necked flask, put it in an ice bath, slowly add concentrated sulfuric acid and sodium nitrate, and keep stirring, keeping the temperature not higher than 5°C until it is completely dissolved. Add potassium permanganate, react the mixture in an oil bath at 35°C for 6 hours, stop stirring, then slowly add 460mL of deionized water to ensure that the temperature does not exceed 95°C, keep the mixture at 95°C for 15min, end the reaction, and mix the solution Move to a 2L beaker, add 1.4L of deionized water, stir for 2 hours, then slowly add 25mL of 30% hydrogen peroxide, let it stand overnight, remove excess potassium permanganate, and let it stand. (4) After the mixture settles, remove the supernatant, wash with a large amount of 5% HCl solution, then wash with water until neutral, centrifuge, and finally freeze-dry to obtain graphite oxide powder. According to the desire...

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Abstract

The invention relates to an aramid fiber reinforced 3D graphene / epoxy resin composite material and a preparation method thereof. Aramid fibers are uniformly distributed and loaded on 3D graphene, and the composite material has electrical conductivity of 102S / cm or higher and compressive strength of 115MPa or higher. The aramid fiber reinforced 3D graphene / epoxy resin composite material has high comprehensive strength and high electrical conductivity, and can be used as a conducting material or electromagnetic shielding material with good buffering capacity.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, and in particular relates to an aramid fiber reinforced 3D graphene / epoxy resin composite material with super compressive capacity and electrical conductivity, and a preparation method and application thereof. Background technique [0002] Graphene is a two-dimensional carbon nanomaterial with excellent mechanical properties, electrical and thermal conductivity, and a large specific surface area. It has attracted much attention in the fields of nanocomposites, sensors, nanoelectronics, and energy storage. Uniformly dispersing graphene in a polymer matrix can prepare nanocomposites with excellent properties. Epoxy resin is a widely used thermosetting resin. Various nano-fillers such as graphene are added to epoxy resin to improve its strength, toughness, electrical and thermal conductivity. Graphene / epoxy resin is usually blended by solvent, which not only consumes a large amount of so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L77/10C08K9/00C08K7/24C08K3/04C08J5/24H05K9/00H01B1/24
CPCC08J5/24C08J2363/00C08J2477/10C08L63/00C08L2203/20C08L2205/16H01B1/24H05K9/0081C08L77/10C08K9/00C08K7/24C08K3/04
Inventor 于中振关芳兰李晓锋安飞闵芃
Owner BEIJING UNIV OF CHEM TECH
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