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A kind of preparation method of graphene oxide/nanometer silicon dioxide/epoxy resin composite material

A nano-silicon dioxide and epoxy resin technology is applied in the field of preparation of graphene oxide composite materials, which can solve the problems of large amount of graphene added, poor compatibility and poor dispersibility, and achieves improved mechanical meshing effect, stretching and bending The effect of increased strength, tensile strength and flexural strength

Active Publication Date: 2021-05-25
青岛碳智新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor dispersion and poor compatibility of graphene in epoxy resin, and the addition of graphene in the graphene epoxy resin composite material is large and the cost is high, and a graphene oxide / nano The preparation method of silicon dioxide / epoxy resin composite material

Method used

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  • A kind of preparation method of graphene oxide/nanometer silicon dioxide/epoxy resin composite material
  • A kind of preparation method of graphene oxide/nanometer silicon dioxide/epoxy resin composite material
  • A kind of preparation method of graphene oxide/nanometer silicon dioxide/epoxy resin composite material

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specific Embodiment approach 1

[0071] Specific embodiment one: this embodiment is a kind of preparation method of graphene oxide / nanometer silicon dioxide / epoxy resin composite material is finished according to the following steps:

[0072] 1. Preparation of graphene oxide:

[0073] ①. Add graphite, sodium nitrate and concentrated sulfuric acid into a three-necked flask, place the three-necked flask in an ice-water bath at 0°C-5°C and stir for 30min-40min at a stirring speed of 300r / min-400r / min. Obtain reaction solution I;

[0074] The massfraction of the concentrated sulfuric acid described in step 1. is 96%~98%;

[0075] The quality of the graphite described in step 1. and the volume ratio of the concentrated sulfuric acid are (6g~8g):(360mL~500mL);

[0076] Step 1. The quality of sodium nitrate described in 1. and the volume ratio (2g~4g) of the vitriol oil: (360mL~500mL);

[0077] ②. Add potassium permanganate to the reaction solution I, then place the three-neck flask in an ice-water bath at 0°C to...

specific Embodiment approach 2

[0124] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the drying described in step 1 ⑧ is freeze-drying at a temperature of -10°C to -5°C for 24h to 36h. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0125] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the silane coupling agent described in Step 2② is 3-mercaptopropyltrimethoxysilane. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of graphene oxide / nano silicon dioxide / epoxy resin composite material, which relates to a preparation method of graphene oxide composite material. The purpose of the present invention is to solve the problem of poor dispersion and poor compatibility of graphene in epoxy resin, and the large amount of graphene added in the graphene epoxy resin composite material and the high cost. Methods: 1. Preparation of graphene oxide; 2. Sulfhydryl functionalization of graphene oxide; 3. Double bond functionalization of nano-silica; 4. Preparation of graphene oxide / nano-silica hybrid material; 5. Composite , to obtain graphene oxide / nanometer silicon dioxide / epoxy resin composite material. The invention can obtain a graphene oxide / nanometer silicon dioxide / epoxy resin composite material.

Description

technical field [0001] The invention relates to a preparation method of a graphene oxide composite material. Background technique [0002] Epoxy resin is an important thermosetting engineering material with excellent mechanical properties, thermal stability, tribological properties and chemical corrosion resistance. Therefore, epoxy resin is widely used in electrical, aerospace, adhesives, coatings , electric vehicles and the aerospace industry. However, the cured epoxy resin has a high cross-linking density, which leads to its brittleness and low fracture toughness, which greatly limits its application, so it is necessary to strengthen and toughen the epoxy resin. [0003] Graphene is made of sp 2 A single-layer two-dimensional material stacked by hybridized carbon atoms has excellent mechanical, electrical, and thermal properties. The graphene-polymer composites showed enhanced mechanical, electrical, thermal and other properties compared to pure epoxy. However, due to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K13/06C08K9/06C08K3/04C08K3/36
CPCC08K3/36C08K9/06C08K13/06C08K2201/011C08K3/042C08L63/00
Inventor 马丽春王明业朱莹莹马立峰
Owner 青岛碳智新材料科技有限公司