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Method for preparing montmorillonite/graphene oxide aerogel/epoxy resin composite material

A technology of graphene airgel and epoxy resin, which is applied in the field of insulating materials, can solve the problems of three-phase composite materials, such as electrical properties, mechanical properties and thermal properties, which are rarely reported, and achieve excellent low dielectric properties and good mechanical properties , The effect of improving mechanical properties

Inactive Publication Date: 2019-03-15
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are more researches on nanoparticles such as graphene oxide and aluminum oxide, and at present, it mainly refers to the research on the unilateral properties of two-phase composite materials or epoxy resins, and comprehensive research on the electrical, mechanical and thermal properties of three-phase composite materials. Performance studies are rarely reported

Method used

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  • Method for preparing montmorillonite/graphene oxide aerogel/epoxy resin composite material
  • Method for preparing montmorillonite/graphene oxide aerogel/epoxy resin composite material
  • Method for preparing montmorillonite/graphene oxide aerogel/epoxy resin composite material

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Embodiment 1

[0031] A kind of preparation method of montmorillonite / graphene oxide airgel / epoxy resin composite material, the method comprises the steps:

[0032] Step 1: Under the condition of ice-water bath, after adding expanded graphite into the container, then add the mixed solution of concentrated sulfuric acid and concentrated nitric acid, then add potassium permanganate, after stirring and heating up, add hydrogen peroxide until the solution becomes bright After turning yellow, adjust the pH of the solution to 7 and centrifuge, and then freeze-dry to obtain graphene oxide airgel;

[0033] Step 2: Take the graphene oxide airgel and add it to the acetone solution, then add γ-glycidyl etheroxypropyl trimethoxysilane (KH560) after ultrasonic treatment, heat up to 60°C under the protection of nitrogen, keep warm and reflux, The modified graphene oxide was obtained after stirring, centrifuging and freeze-drying.

[0034] Step 3: prepare modified montmorillonite by the method of step 2; ...

Embodiment 2

[0037] According to the preparation method of the montmorillonite / graphene oxide airgel / epoxy resin composite material described in Example 1, the specific process of the described step one is: under the condition of ice-water bath, add 1 g of dilatant to the glass device Graphite, slowly add the mixed solution of concentrated sulfuric acid and concentrated nitric acid, after the mechanical stirring is fully mixed, after slowly adding 6.5 g of potassium permanganate several times, continue mechanical stirring for 1 hour. Then move the mixture to a constant temperature water bath at 35 °C and continue mechanical stirring for 2 h, adjust the temperature of the water bath to 98 °C, and slowly add 200 mL of deionized water dropwise using a separatory funnel during the heating period, and continue stirring after the water bath reaches the set temperature 1 h, add hydrogen peroxide solution until the solution turns bright yellow, add deionized water to adjust the pH of the solution t...

Embodiment 3

[0039] According to the preparation method of montmorillonite / graphene oxide airgel / epoxy resin composite material described in embodiment 1 or 2, the specific process of described step 2 is: get 1g graphene oxide airgel and add to 150ml Add 30ml of acetone solution into the three-necked bottle, ultrasonically treat until uniformly dispersed, move the device to a constant temperature water bath, add nitrogen gas into the device, add 1ml of γ-glycidyl etheroxypropyltrimethoxysilane, and Under protection, the water bath was heated to 60 °C, kept at reflux and stirred for 6 h, then centrifuged and washed, and freeze-dried to obtain KH560 modified graphene oxide. The modification method of montmorillonite is consistent with that of KH560 modified graphene oxide.

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Abstract

The invention provides a method for preparing a montmorillonite / graphene oxide aerogel / epoxy resin composite material and relates to a study on single-aspect performance of a double-phase composite material or epoxy resin. The method for preparing the montmorillonite / graphene oxide aerogel / epoxy resin composite material comprises the following steps: after adding expanded graphite to a container under a condition of ice-water bath, adding a mixed solution of concentrated sulfuric acid and concentrated nitric acid to the container; adding potassium permanganate to the container; stirring and heating an obtained mixture; after adding hydrogen peroxide to the mixture till a solution becomes luminous yellow, adjusting the PH value of the solution to 7; centrifuging the solution; freezing and drying the solution to obtain graphene oxide aerogel; taking the graphene oxide aerogel and adding the graphene oxide aerogel to acetone solution; carrying out ultrasonic treatment on an obtained mixture to obtain modified graphene oxide under the nitrogen protection; adding acetone to the modified graphene oxide and modified montmorillonite mixture; adding pre-heated epoxy resin to the modified graphene oxide and modified montmorillonite mixture in advance; and ultrasonically stirring, vacuumizing, heating, curing and cooling an obtained mixture to obtain a three-phase composite material. Themethod for preparing the montmorillonite / graphene oxide aerogel / epoxy resin composite material is used for preparing the montmorillonite / graphene oxide aerogel / epoxy resin composite material.

Description

Technical field: [0001] The invention relates to the technical field of insulating materials, in particular to a method for preparing a montmorillonite / graphene oxide airgel / epoxy resin composite material. Background technique: [0002] Due to the advantages of excellent dielectric properties, stable formability, good sealing performance, and small linear expansion coefficient, epoxy resins are widely used in many engineering applications, including electronics, automotive aerospace industry, and coatings. However, with the continuous reduction of the feature size of chips in integrated circuits and the continuous miniaturization of electronic devices, traditional epoxy resins have been unable to meet their application in microelectronic components such as integrated circuits. In order to meet the requirements of high integration of integrated circuits and obtain high-efficiency insulating materials, it is urgent to develop new low dielectric constant materials to solve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K13/06C08K7/24C08K9/06C08K3/34
CPCC08K3/346C08K7/24C08K9/06C08K13/06C08L63/00
Inventor 周宏张航孙琦
Owner HARBIN UNIV OF SCI & TECH
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