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Preparation method of magnetic orientation carbon nano tube reinforced glass fiber epoxy composite material

A carbon nanotube and glass fiber technology, which is applied in the field of preparation of magnetically oriented carbon nanotube reinforced glass fiber/epoxy composite materials, can solve problems such as agglomeration, achieve simple preparation process, stable product quality, and improve the effect of orientation

Active Publication Date: 2019-02-26
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the invention is to provide a preparation method of magnetically oriented carbon nanotube reinforced glass fiber / epoxy composite material, which is used to solve the problem of aggregation caused by CNTs being blocked or filtered by glass fiber fabric in the composite material forming process

Method used

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  • Preparation method of magnetic orientation carbon nano tube reinforced glass fiber epoxy composite material
  • Preparation method of magnetic orientation carbon nano tube reinforced glass fiber epoxy composite material
  • Preparation method of magnetic orientation carbon nano tube reinforced glass fiber epoxy composite material

Examples

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Embodiment 1

[0029] A preparation method of magnetically oriented carbon nanotube reinforced glass fiber / epoxy composite material, the specific steps are as follows:

[0030] (1) Silanized carbon nanotubes: Weigh 0.5g of acid-oxidized multi-walled carbon nanotubes and add them into 0.05L of N,N'-dimethylformamide solvent, then weigh 0.01g of N,N'-diisopropyl Carbodiimide and 0.01g 1-hydroxybenzotriazole were added respectively, stirred for 5min and ultrasonicated for 30min to obtain a 10g / L carbon nanotube dispersion; then added 0.015g of γ-aminopropyltriethoxysilane, and Maintain mechanical stirring at a speed of 200 r / min for 24 hours; wash with absolute ethanol for 3 times and filter to obtain silanized carbon nanotubes.

[0031] (2) Carbon nanotubes grafted ferroferric oxide magnetic balls: ultrasonically disperse the silanized carbon nanotubes in step (1) in 0.05L absolute ethanol to obtain a 10g / L silanized carbon nanotube dispersion; Then add 0.55g of ferroferric oxide magnetic bal...

Embodiment 2

[0036] A preparation method of magnetically oriented carbon nanotube reinforced glass fiber / epoxy composite material, which is different from Example 1 in that the acidified carbon nanotube described in step (1) becomes 1.2g, and the N, N'-diisopropylcarbodiimide and 1-hydroxybenzotriazole become 0.024g respectively, and described gamma-aminopropyltriethoxysilane becomes 0.03g; Described in step (2) The mass of the ferroferric oxide magnetic ball becomes 1.8 g; the dispersant becomes 0.3 g of polyvinyl butyral (B60H) in step (3).

Embodiment 3

[0040] A preparation method of magnetically oriented carbon nanotube reinforced glass fiber / epoxy composite material, which is different from Example 1 in that the acidified carbon nanotube described in step (1) becomes 0.6g, and the organic solvent Become dichloromethane, described carbodiimide type condensing agent becomes the 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (EDC) of 0.018g, described silane di The gamma-aminoethylaminopropyltriethoxysilane that joint agent becomes 0.03g; The ferriferromagnetic ball quality described in step (2) becomes 1.2g, and the diameter of magnetic ball becomes about 300nm; Step (3) The dispersant becomes 0.24g of alkylphenol polyoxyethylene ether; the epoxy resin becomes a viscosity of 1000~1800mPa·s glycidyl ester epoxy resin, and the consumption is 41.6g; the curing Agent becomes 593 solidifying agent, consumption is 8.4g; Described glass fiber material becomes surface density 400g / m 2 The square cloth, consumption is 160g, lays 4 lay...

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Abstract

The invention discloses a preparation method of a magnetic orientation carbon nano tube reinforced glass fiber epoxy composite material, and the method comprises: dispersing carbon nano tubes into anorganic solvent, and modifying the carbon nano tubes by adopting a silane coupling agent to prepare silanized carbon nano tubes; then adding ferroferric oxide nano magnetic balls, and carrying out hydrolytic condensation, filtration, water washing, and spraying drying to obtain ferroferric oxide grafted carbon nano tube nano-powder; then mixing the nano-powder, a dispersing agent and epoxy resin,carrying out stirring and three-roller grinding, adding a curing agent, uniformly mixing to obtain a mixture, and coating the surface of a glass fiber fabric with the mixture; finally, vacuumizing andkeeping the vacuum state, and applying an external magnetic field until the resin is completely solidified. According to the invention, by the resin flow shear force and magnetic field synergistic effect, the carbon nano tubes can be effectively oriented in the glass fiber reinforced composite material, the dispersity of the carbon nano tubes is improved, and the mechanical property of the composite material is stably improved. In addition, the orientation of the carbon nanotubes is controllable in direction and efficient, and industrial production is convenient.

Description

technical field [0001] The invention belongs to the technical field of glass fiber reinforced polymer composite materials, and in particular relates to a preparation method of magnetically oriented carbon nanotube reinforced glass fiber / epoxy composite materials. Background technique [0002] Since their discovery in 1991, carbon nanotubes (CNTs) have been favored in the fields of hydrogen storage, large-capacity batteries, nanodevices, and composite materials because of their excellent electrical, magnetic, and mechanical properties. Commercially available CNTs powders are in a state of disordered distribution, intertwined and difficult to disperse, which makes it difficult to exert their excellent properties and brings great inconvenience to research and application. Studies have shown that aligned CNTs are less entangled and can exert their excellent properties to a greater extent. Moreover, compared with disordered CNTs / polymer composites, the electrical, thermal, optic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/12
CPCD06N3/0022D06N3/0061D06N3/0063D06N3/12
Inventor 曾少华申明霞卢晓琳贾蓓蓓朱泽元郑益飞薛逸娇
Owner HOHAI UNIV
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