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Preparation method of graphene/epoxy resin composite material

A technology of epoxy resin and composite materials, which is applied in the field of graphene materials, can solve the problems of reduced electrical conductivity and graphene limitations, and achieve the effects of enhanced tensile strength, increased flame retardancy, electrical conductivity, and excellent electrical properties

Inactive Publication Date: 2020-05-08
浙江通力新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the research of many graphene materials, the composite of graphene and polymer is mainly used to study the performance of graphene composite materials in terms of light, electricity, force, and heat. It is applied to more fields. At present, among the many preparation methods of graphene, the oxidation-reduction method is the most widely used method. However, the structure of graphene after treatment with strong acid and strong oxidant is The upper part is complete, and the electrical conductivity is greatly reduced, which limits the application of graphene

Method used

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  • Preparation method of graphene/epoxy resin composite material
  • Preparation method of graphene/epoxy resin composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation method of graphene / epoxy resin composite material, specifically comprises the following steps:

[0026] Step 1, the preparation of graphene dispersion liquid: at 0 o C, under the condition that the ICA stirrer is stirring at a constant speed, the graphene powder is fully mixed with the solvent first, and then the dispersant is added and ultrasonically mixed for 40 minutes to obtain a uniformly mixed graphene dispersion;

[0027] Step 2, place the container containing the graphene dispersion in an ice-water bath, add epoxy resin particles evenly and slowly while stirring, and perform high-intensity ultrasonic oscillation for 2 h with an ultrasonic degrader;

[0028] Step 3, the container containing the mixed solution obtained in step 2 is placed in the ICA stirrer in the fume hood, and stirred at a speed of 1000 r / min for 60 min at room temperature;

[0029] Step 4, place the mixed solution obtained in step 3 at 80 o 8 h in an oven at C to remove ...

Embodiment 2

[0035] A kind of preparation method of graphene / epoxy resin composite material, specifically comprises the following steps:

[0036] Step 1, the preparation of graphene dispersion liquid: in 4 o C, under the condition that the ICA stirrer is stirring at a constant speed, the graphene powder is fully mixed with the solvent first, and then the dispersant is added and ultrasonically mixed for 30 minutes to obtain a uniformly mixed graphene dispersion;

[0037] Step 2, place the container containing the graphene dispersion in an ice-water bath, add epoxy resin particles evenly and slowly while stirring, and perform high-intensity ultrasonic oscillation for 1.5 h with an ultrasonic degrader;

[0038] Step 3, the container containing the mixed solution obtained in step 2 is placed in the ICA stirrer in the fume hood, and stirred at a speed of 1100 r / min for 40 min at room temperature;

[0039] Step 4, place the mixed solution obtained in step 3 at 90 o C in the oven for 6 h to rem...

Embodiment 3

[0045] A kind of preparation method of graphene / epoxy resin composite material, specifically comprises the following steps:

[0046] Step 1, the preparation of graphene dispersion liquid: in 6 o C, under the condition that the ICA stirrer is stirring at a constant speed, the graphene powder is fully mixed with the solvent first, and then the dispersant is added and ultrasonically mixed for 20 minutes to obtain a uniformly mixed graphene dispersion;

[0047] Step 2, place the container containing the graphene dispersion in an ice-water bath, add epoxy resin particles evenly and slowly while stirring, and perform high-intensity ultrasonic oscillation for 2 h with an ultrasonic degrader;

[0048] Step 3, the container containing the mixed solution obtained in step 2 is placed in the ICA stirrer in the fume hood, and stirred at a speed of 1200 r / min for 35 min at room temperature;

[0049] Step 4, place the mixed solution obtained in step 3 at 100 o C in the oven for 5 h to remo...

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Abstract

The invention discloses a preparation method of a graphene / epoxy resin composite material. The method specifically comprises the following steps: preparation of a graphene dispersion liquid, preparation of a graphene / epoxy resin mixed system homogeneous liquid, formation of a curing system, vacuum defoaming treatment and a thermosetting molding reaction. According to the preparation method provided by the invention, the reinforcement mechanism of the graphene to the epoxy resin is utilized, so that the prepared graphene / epoxy resin composite material is excellent in electrical property; and the graphene is uniformly dispersed in the epoxy resin, so that the tensile strength of the composite material is enhanced, and the flame retardant property and the conductive property of the material are improved.

Description

technical field [0001] The invention relates to the technical field of graphene materials, in particular to a method for preparing a graphene / epoxy resin composite material. Background technique [0002] Graphene is a two-dimensional nanomaterial consisting of one atomic layer thick graphite sheet. Graphene materials have a variety of excellent properties, such as super electric conductivity, thermal conductivity and mechanical strength, super high carrier mobility, light transmittance and huge surface area, so they are widely used in new energy materials and devices, electronics , Catalysis, sensors, biomedicine, optics and many other fields have shown great application development prospects. At the same time, graphene has become one of the research hotspots in the interdisciplinary fields of materials science, information science, life science, and new energy. In the research of many graphene materials, the composite of graphene and polymer is mainly used to study the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K3/04C08J3/205
CPCC08J3/205C08J2363/00C08K3/042C08L63/00
Inventor 何志才王相友
Owner 浙江通力新材料科技股份有限公司
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