Preparation method of graphene nanoplatelet/epoxy resin nanocomposite material

A nano-composite material and graphene micro-sheet technology are applied in the field of preparation of graphene micro-sheet/epoxy resin nano-composite materials, which can solve problems such as the limitation of re-dispersion, reduce melting dripping, improve limiting oxygen index, Improve the effect of combustion to charcoal

Active Publication Date: 2013-11-20
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene microplatelets have a strong tendency to aggregate and a highly inert sur

Method used

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  • Preparation method of graphene nanoplatelet/epoxy resin nanocomposite material
  • Preparation method of graphene nanoplatelet/epoxy resin nanocomposite material
  • Preparation method of graphene nanoplatelet/epoxy resin nanocomposite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] For the graphene microflake / epoxy resin nanocomposite material prepared in this example, the weight ratio of epoxy resin, curing agent, and graphene microflake is 100:33:5.

[0029] The preparation method is as follows:

[0030] 5 g of graphene microflakes were dispersed in acetone to form a suspension, so that the concentration of the suspension was 10 mg / ml. The suspension was put into a sonicator, and an ice-water mixture was put into the sonicator at the same time, and stirred in an ice bath with a power of 250W for 1.5 hours while sonicating. Add 100 g of epoxy resin monomer JY-256 to the resulting solution, and continue to stir for 1.5 hours while ultrasonically stirring in an ice bath with a power of 250 W. The resulting mixture was placed in a 60°C oil bath and stirred for 5 hours. Then put it into a vacuum oven, and vacuumize at 60° C. for 2 hours. The resulting mixture was cooled to room temperature, 33 g of curing agent D230 was added, and stirred for 0.5 ...

Embodiment 2

[0033] For the graphene microflake / epoxy resin nanocomposite material prepared in this example, the weight ratio of epoxy resin, curing agent, and graphene microflake is 100:33:3.

[0034] The preparation method is as follows:

[0035] 3 g of graphene microflakes were dispersed in acetone to form a suspension, so that the concentration of the suspension was 10 mg / ml. The suspension was put into a sonicator, and an ice-water mixture was put into the sonicator at the same time, and stirred in an ice bath with a power of 250W for 1.5 hours while sonicating. Add 100 g of epoxy resin monomer JY-256 to the resulting solution, and continue to stir for 1.5 hours while ultrasonically stirring in an ice bath with a power of 250 W. The resulting mixture was placed in a 60°C oil bath and stirred for 5 hours. Then put it into a vacuum oven, and vacuumize at 60° C. for 2 hours. The resulting mixture was cooled to room temperature, 33 g of curing agent D230 was added, and stirred for 0.5 ...

Embodiment 3

[0038] For the graphene microflake / epoxy resin nanocomposite material prepared in this example, the weight ratio of epoxy resin, curing agent, and graphene microflake is 100:33:1.

[0039] The preparation method is as follows:

[0040]Take 1 g of graphene microflakes and disperse them in acetone, so that the concentration of the suspension is 10 mg / ml. The suspension was put into a sonicator, and an ice-water mixture was put into the sonicator at the same time, and stirred in an ice bath with a power of 250W for 1.5 hours while sonicating. Add 100 g of epoxy resin monomer JY-256 to the resulting solution, and continue to stir for 1.5 hours while ultrasonically stirring in an ice bath with a power of 250 W. The resulting mixture was placed in a 60°C oil bath and stirred for 5 hours. Then put it into a vacuum oven, and vacuumize at 60° C. for 2 hours. The resulting mixture was cooled to room temperature, 33 g of curing agent D230 was added, and stirred for 0.5 hours. The res...

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PUM

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Abstract

The invention provides a preparation method of a graphene nanoplatelet/epoxy resin nanocomposite material. The preparation method comprises the following operating steps of: dispersing graphene nanoplatelets in an organic solvent, putting the organic solvent into an ultrasonic apparatus, carrying out ultrasonic treatment on the materials in an ice bath with power more than or equal to 250W for 1.5 hours, and simultaneously stirring the materials; adding epoxy resins, carrying out ultrasonic treatment in the ice bath with power more than or equal to 250W for 1.5 hours, and simultaneously stirring; putting the materials into an oil bath, raising the temperature to the boiling point of the used organic solvent, simultaneously stirring for 5-15 hours, and then putting the materials into a vacuum oven to be decompressed and heated for 2 hours; cooling to room temperature, adding a curing agent according to the usage amount of the epoxy resins, and stirring the materials for 0.5 hour; and putting the materials in the vacuum oven to be decompressed for 1 hour at normal temperature, then pouring the materials into a forming mold, and putting the forming mold into the oven to be cured, thus obtaining the graphene nanoplatelet/epoxy resin nanocomposite material. In the method, the graphene nanoplatelets are utilized to improve the thermal properties and flame retardance of the epoxy resins, thus solving the problem of dispersion of the graphene nanoplatelets in epoxy resin matrices.

Description

technical field [0001] The invention relates to the technical field of nanocomposite material preparation, in particular to a method for preparing a graphene microchip / epoxy resin nanocomposite material. Background technique [0002] Epoxy resin is an extremely important thermosetting polymer. Due to its outstanding mechanical strength and toughness, good solvent and chemical resistance, and superior bonding properties, epoxy resins are widely used as coatings, adhesives, laminates, semiconductor packaging, and advanced fiber-reinforced composites the matrix. However, the oxygen index of the cured epoxy resin is only about 15, which is quite low, and it can burn by itself under air conditions. It can be seen that flammability is a major defect of epoxy resin, which greatly limits its application. Therefore, the flame retardant modification of epoxy resin has always been a hot research topic. [0003] Graphene microflakes refer to ultra-thin graphene layered stacks with mo...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K3/04
Inventor 闫红强方征平刘珊
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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