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Graphene hybrid containing boron, nitrogen, cobalt, zinc and silicon and preparation method of graphene hybrid

A technology of graphene and hybrids, applied in the field of graphene hybrids and their preparation, can solve problems such as easy agglomeration and difficult dispersion, achieve good dispersion, low cost, and improve the effect of flame retardancy

Inactive Publication Date: 2020-01-03
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong van der Waals force between RGO sheets, it is easy to agglomerate and not easy to disperse in polymer materials, so the application of RGO in the field of flame retardancy is limited to a certain extent.

Method used

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  • Graphene hybrid containing boron, nitrogen, cobalt, zinc and silicon and preparation method of graphene hybrid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Preparation of graphene hybrids containing boron, nitrogen, cobalt, zinc and silicon

[0020] a) Weigh 50 mg of graphene oxide prepared by the Hummers method, add it to 100 ml of deionized water, and disperse it ultrasonically for 1.5 h to obtain a graphene oxide suspension; pour the graphene oxide suspension into a four-necked bottle, and heat it at the same time. Raise to 70°C, add 4ml of silane coupling agent KH550, stir for 5 hours and then cool to room temperature;

[0021] b) Weigh 2.16g, 2.21g and 9.76g of cobalt nitrate hexahydrate, zinc nitrate hexahydrate and 2-methylimidazole respectively and dissolve them in 50ml deionized water, first mix the cobalt nitrate hexahydrate solution and the zinc nitrate hexahydrate solution and added to the graphene oxide suspension, stirred and reacted at room temperature for 3h, then added 2-methylimidazole solution, continued to stir and reacted for 10h, then, the temperature was raised to 100°C, and 1.25ml of hydrazine hy...

Embodiment 2

[0034] 1. Preparation of graphene hybrids containing boron, nitrogen, cobalt, zinc and silicon

[0035] a) Weigh 50 mg of graphene oxide prepared by the Hummers method, add it to 100 ml of deionized water, and disperse it ultrasonically for 1.5 h to obtain a graphene oxide suspension; pour the graphene oxide suspension into a four-necked bottle, and heat it at the same time. Raise to 80°C, add 4ml of silane coupling agent KH550, stir for 5 hours and then cool to room temperature;

[0036] b) Weigh 2.16g, 2.21g and 10.97g of cobalt nitrate hexahydrate, zinc nitrate hexahydrate and 2-methylimidazole respectively and dissolve them in 50ml deionized water, first mix the cobalt nitrate hexahydrate solution and the zinc nitrate hexahydrate solution and added to the graphene oxide suspension, stirred and reacted at room temperature for 3h, then added 2-methylimidazole solution, continued to stir and reacted for 12h, then, the temperature was raised to 100°C, and 1.25ml of hydrazine h...

Embodiment 3

[0046] 1. Preparation of graphene hybrids containing boron, nitrogen, cobalt, zinc and silicon

[0047] a) Weigh 50 mg of graphene oxide prepared by the Hummers method, add it to 100 ml of deionized water, and disperse it ultrasonically for 1.5 h to obtain a graphene oxide suspension; pour the graphene oxide suspension into a four-necked bottle, and heat it at the same time. Raise to 90°C, add 4ml of silane coupling agent KH550, stir for 5 hours and then cool to room temperature;

[0048] b) Weigh 2.16g, 2.21g and 12.19g of cobalt nitrate hexahydrate, zinc nitrate hexahydrate and 2-methylimidazole respectively and dissolve them in 50ml deionized water, first mix the cobalt nitrate hexahydrate solution and the zinc nitrate hexahydrate solution and added to the graphene oxide suspension, stirred and reacted at room temperature for 3h, then added 2-methylimidazole solution, continued to stir and reacted for 14h, then, the temperature was raised to 100°C, and 1.25ml of hydrazine h...

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Abstract

The invention belongs to the technical field of flame retardance and smoke suppression, and particularly relates to a graphene hybrid containing boron, nitrogen, cobalt, zinc and silicon, and the graphene hybrid is prepared by carrying out hybridization on KH550, graphene oxide, Co / Zn-ZIF and sodium tetraborate decahydrate. The invention also relates to a preparation method of the graphene hybrid.Through the preparation method, KH550 is introduced to the surface of graphene through an amidation reaction of the KH550 and oxygen-containing functional groups on the surface of the graphene oxide;Co / Zn-ZIF grows on the surface of graphene through electrostatic interaction; and borate ions are combined on the surface of Co / Zn-ZIF through covalent bond acting force, so that the graphene hybridcontaining boron, nitrogen, cobalt, zinc and silicon is prepared. Through addition of the hybrid, flame retardancy, smoke suppression and mechanical properties of a composite material can be significantly improved.

Description

technical field [0001] The invention belongs to the technical field of flame retardancy and smoke suppression, and in particular relates to a graphene hybrid containing boron, nitrogen, cobalt, zinc and silicon and a preparation method thereof. Background technique [0002] Since the 21st century, with the rapid development of the national economy, organic polymer materials have been widely used in people's daily life and in the construction of the national economy. However, the vast majority of organic polymer materials are easy to ignite and burn quickly, and at the same time produce a large amount of heat and toxic and harmful smoke, which poses a huge threat to human life, so improving the flame retardancy and inhibition of polymer materials Smoke performance is getting more and more attention. [0003] Graphene (RGO) is a two-dimensional honeycomb planar structure composed of a single layer of carbon atoms tightly packed. It has a large specific surface area and excell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/12C08K9/06C08K9/04C08K9/02C08K3/04C08L23/12C08L23/08C08L75/04
CPCC08K9/02C08K9/04C08K9/06C08K9/12C08K2201/011C08L2201/02C08K3/042C08L75/04C08L23/0853C08L23/12
Inventor 徐文总汪晓玲尹黎坤程传明张丙亮程子豪
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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