Oriented graphene/bismaleimide multilevel composite material and preparation method thereof

A technology of bismaleimide and composite material, applied in the field of oriented graphene/bismaleimide multi-layer composite material and preparation thereof

Inactive Publication Date: 2015-04-29
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recent studies have found that graphene can significantly improve the tribological properties of bismaleimide resins. However, due to the anisotropy of the friction properties of graphene itself, how to control the distribution of graphene in the resin and give full play to its excellent Performance is a problem that needs to be solved urgently in the field of friction materials

Method used

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  • Oriented graphene/bismaleimide multilevel composite material and preparation method thereof
  • Oriented graphene/bismaleimide multilevel composite material and preparation method thereof

Examples

Experimental program
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Effect test

specific Embodiment approach

[0025] Step 1: Graphene oxide with a mass fraction of 5 to 25 parts and FeCl with 40 to 100 parts 3 ·6H 2 O and 10-40 parts of FeCl 2 4H 2 Disperse O into 10,000-20,000 parts of deionized water, ultrasonically disperse at 100-300W for 10-30min, add 0.4mol / L NaOH aqueous solution to adjust pH=11, heat in 0.05-0.5T magnetic field, 50 After reacting at ~80°C for 2 hours, add 50-200 parts of hydrazine hydrate and raise the temperature to 98°C for 4 hours, filter with suction, wash, and dry in vacuum to obtain GNSFe3 o 4 .

[0026] Step 2: GNSFe with a mass fraction of 0.1 to 50 parts 3 o 4 , 0.1-50 parts of hyperbranched polysiloxane-modified graphene (for its preparation method, see invention patent ZL201210234077.6), 100 parts of diphenylmethane-type bismaleimide and 10-100 parts of diallyl Based on bisphenol A, heated to 130-160°C, melted, stirred evenly, poured into the mold, defoamed, and cured in a static magnetic field of 0.05-0.5T, the curing process was 150°C / 2h+180...

Embodiment 1

[0028] Step 1: the mass fraction is 5 parts of graphene oxide, 40 parts of FeCl 3 ·6H 2 O and 17 parts of FeCl 2 4H 2 Disperse O into 10000 parts of deionized water, ultrasonically disperse for 10 to 30 minutes at a power of 100 to 300 W, add 0.4 mol / L NaOH aqueous solution to adjust pH = 11, and heat in a 0.05 to 0.5 T magnetic field, 50 to 80 After reacting at ℃ for 2 hours, add 50-200 parts of hydrazine hydrate and raise the temperature to 98 ℃ for 4 hours, filter with suction, wash, and dry in vacuum to obtain GNSFe 3 o 4 .

[0029] Step 2: the mass fraction is 0.2 parts of GNSFe 3 o 4 , 0.1 part of hyperbranched polysiloxane-modified graphene, 100 parts of diphenylmethane type bismaleimide and 30 parts of diallyl bisphenol A, heated to 130-160 ° C, melted, stirred Evenly, pour it into the mold, defoam, put it in a static magnetic field of 0.05 ~ 0.5T to cure, the curing process is 150°C / 2h+180°C / 2h+220°C / 4h, then naturally cool, after demoulding, at 250 After post...

Embodiment 2

[0031] Step 1: the mass fraction is 10 parts of graphene oxide, 60 parts of FeCl 3 ·6H 2 O and 25 parts of FeCl 2 4H 2 Disperse O into 13000 parts of deionized water, ultrasonically disperse for 10 to 30 minutes at a power of 100 to 300 W, add 0.4 mol / L NaOH aqueous solution to adjust pH = 11, and heat in a 0.05 to 0.5 T magnetic field, 50 to 80 After reacting at ℃ for 2 hours, add 50-200 parts of hydrazine hydrate and raise the temperature to 98 ℃ for 4 hours, filter with suction, wash, and dry in vacuum to obtain GNSFe 3 o 4 .

[0032] Step 2: the mass fraction is 0.4 parts of GNSFe 3 o 4 , 0.2 parts of hyperbranched polysiloxane-modified graphene, 100 parts of diphenylmethane bismaleimide and 40 parts of diallyl bisphenol A, heated to 130-160 ° C, melted, stirred Evenly, pour it into the mold, defoam, put it in a static magnetic field of 0.05 ~ 0.5T to cure, the curing process is 150°C / 2h+180°C / 2h+220°C / 4h, then naturally cool, after demoulding, at 250 After post-tr...

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Abstract

The invention relates to an oriented graphene / bismaleimide multilevel composite material and a preparation method thereof. The composite material is characterized by comprising the following components in parts by mass: 0.1-50 parts of GNS@Fe3O4, 0.1-50 parts of hyperbranched polysiloxane-modified graphene, 100 parts of diphenyl methane type bismaleimide and 10-100 parts of diallyl bisphenol A. By the composite material, the defect of agglomeration of graphene due to pi-pi stacking can be inhibited and magnetic response can be endowed to graphene, the distribution pattern of graphene in the resin is adjusted and the synergic effect of graphene and Fe3O4 in anti-wear and friction-reducing properties can be given to a full play so that the prepared composite material has the characteristics of high toughness, high strength, super anti-wear property, self-lubricating property and the like.

Description

technical field [0001] The invention belongs to the field of science and technology of advanced composite materials, and in particular relates to an oriented graphene / bismaleimide multilayer composite material and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional honeycomb lattice material composed of a single layer of carbon atoms. This unique structure makes it have many excellent properties in addition to extremely high thermal conductivity and carrier mobility. For example, the intrinsic strength is as high as 130GPa, which is 100 times higher than steel, and it is the material with the highest strength at present. At the same time, its structure similar to carbon nanotubes makes it have good toughness and lubricity, which can be applied to the preparation of reinforcement, anti-friction, anti-wear and other materials. [0003] Fe 3 o 4 Because of its unique anti-friction and anti-wear and magnetic properties of magnetic nanopar...

Claims

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Application Information

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IPC IPC(8): C08G73/12C08K13/06C08K9/06C08K3/04C08K7/00C08K3/22
Inventor 颜红侠刘超贾园陈争艳吕青
Owner NORTHWESTERN POLYTECHNICAL UNIV
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