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A kind of epoxy nanocomposite material of tannic acid modified graphene oxide

A composite material and epoxy nanotechnology, which is applied in the field of epoxy nanocomposite materials, can solve the problems of insufficient compatibility and interface bonding strength, and the mechanical properties of composite materials cannot meet the requirements, so as to improve the compatibility and interface bonding strength. , Improve mechanical properties, good application prospects

Active Publication Date: 2021-08-06
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the currently prepared graphene oxide / resin matrix composites, due to the lack of compatibility and interfacial bonding strength between graphene oxide and resin matrix, the mechanical properties of the composite materials can not meet the demand

Method used

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  • A kind of epoxy nanocomposite material of tannic acid modified graphene oxide
  • A kind of epoxy nanocomposite material of tannic acid modified graphene oxide
  • A kind of epoxy nanocomposite material of tannic acid modified graphene oxide

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Embodiment 1

[0033] Embodiment 1, the preparation of tannic acid modified graphene oxide / epoxy nanocomposite material (TA-GO / EP) of the present invention

[0034] 1. Preparation of tannic acid modified graphene oxide

[0035] according to figure 1 The synthetic route shown is to synthesize the tannic acid-modified graphene oxide (TA-GO) of the present invention.

[0036] Weigh 0.5g graphene oxide (GO) (C / O molar ratio is (6.9-7.1): 3, can be purchased from Beijing Carbon Century Technology Co., Ltd.) cell crushing ultrasonic dispersion in 100mL dry dimethyl sulfoxide (DMSO ), sequentially add dimethylepoxypyridine (DMAP) and N,N-dicyclohexylcarbodiimide (DCC) to the dispersed GO suspension, and ensure that m(GO):n(DMAP) :n(DCC) is 0.4g:9.6mmol:0.8mmol. The mixture was ultrasonically activated in a water bath at room temperature for 4 h. After the activation, under stirring, 2 g of tannic acid (TA) in 50 mL of DMSO was slowly dropped into the three-necked flask at a constant rate, and h...

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Abstract

The invention provides an epoxy nanocomposite material, which is prepared from the following raw materials: tannic acid modified graphene oxide (TA-GO), epoxy resin and curing agent. The present invention also provides a preparation method of the above-mentioned epoxy nanocomposite material. The experimental results show that TA-GO and epoxy resin have super compatibility and interfacial bonding strength, and the cross-linking density of the composite material system is greatly improved under the extremely low addition amount of TA-GO, and the mechanical properties of the composite material system have been significantly improved. epoxy nanocomposites.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to an epoxy nanocomposite material of tannic acid modified graphene oxide. Background technique [0002] Epoxy resin (EP) is an excellent high-strength thermosetting resin and is a widely used matrix material. However, pure epoxy resin is difficult to meet the use requirements in practical applications, so its application is limited to a certain extent. [0003] Resin-based nanocomposites refer to the compounding of small-sized nanoscale dispersed phases and resin bases. Due to the unique thermodynamic properties, large specific surface area and strong surface activity of doped phase nanoparticles, such nanoparticles are dispersed After being in the resin matrix, it can have a strong interaction with the matrix on a microscopic scale, thereby improving the strength, heat resistance and other properties of the composite material with a small amount of addition....

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/04C08K3/04
Inventor 邹华维张雪琴梁梅陈洋
Owner SICHUAN UNIV
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