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Functionalized graphene oxide-aluminum hypophosphite flame retardant as well as preparation method and application thereof

A technology of aluminum hypophosphite and graphene, applied in the field of hybrid materials, can solve problems such as low flame retardant efficiency, and achieve the effect of improving flame retardant performance

Active Publication Date: 2021-07-16
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a functionalized graphene oxide-aluminum hypophosphite flame retardant to overcome the low flame retardant efficiency described in the above-mentioned prior art, and the flame retardant has a good flame retardant effect

Method used

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  • Functionalized graphene oxide-aluminum hypophosphite flame retardant as well as preparation method and application thereof
  • Functionalized graphene oxide-aluminum hypophosphite flame retardant as well as preparation method and application thereof
  • Functionalized graphene oxide-aluminum hypophosphite flame retardant as well as preparation method and application thereof

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Embodiment 1

[0059] This embodiment provides a functionalized graphene oxide-aluminum hypophosphite flame retardant and a polystyrene nanocomposite flame retardant material prepared therefrom.

[0060] The preparation method of this functionalized graphene oxide-aluminum hypophosphite flame retardant is as follows:

[0061] S1. Preparation of phosphorus-containing functionalized graphene oxide (FGO):

[0062] Under a nitrogen atmosphere, add 40ml of dimethylformamide (DMF) to a 500ml three-necked flask, and quickly add POCl 3 (0.06mol, 9.252g) was stirred evenly, then triethylamine (TEA) (0.2mol, 20.258g) was added, and after stirring for 20min, 1g of graphene oxide (GO) was dispersed in 60ml of DMF and ultrasonicated for 1h to form a uniform The mixed solution was slowly dropped into a three-necked flask, and after stirring for 4 hours at 0-5°C, the mixed solution was obtained;

[0063] Move the three-necked flask containing the mixed solution to an oil bath at 60°C, slowly add DOPO-OH ...

Embodiment 2

[0070] This embodiment provides a functionalized graphene oxide-aluminum hypophosphite flame retardant, and a polystyrene nanocomposite flame retardant material prepared therefrom. The difference from Example 1 is that the quality of FGO-AHP in M1 is 2.1 g.

Embodiment 3

[0072] This embodiment provides a functionalized graphene oxide-aluminum hypophosphite flame retardant, and a polystyrene nanocomposite flame retardant material prepared therefrom. The difference from Example 1 is that the quality of FGO-AHP in M1 is 2.8 g.

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Abstract

The invention discloses a functionalized graphene oxide-aluminum hypophosphite flame retardant as well as a preparation method and application thereof. The preparation method of the functionalized graphene oxide-aluminum hypophosphite flame retardant comprises the following steps of: S1, uniformly mixing graphene oxide, phosphorus oxychloride and triethylamine in a dimethylformamide solution in an inert gas atmosphere, reacting for 5-8 hours at the temperature of 0-5 DEG C, then mixing DOPO-OH, reacting for 5-8 hours at the temperature of 40-60 DEG C, and performing post-treatment to obtain FGO; and S2, uniformly mixing sodium hypophosphite with the aqueous solution of FGO, dropwise adding an aqueous solution of aluminum sulfate octadecahydrate at 80-90 DEG C, reacting for 6-8 hours, and performing post-treatment to obtain the functionalized graphene oxide-aluminum hypophosphite flame retardant. The functionalized graphene oxide-aluminum hypophosphite flame retardant developed by the invention has an excellent flame retardant effect, and a polystyrene nano composite flame retardant material can be prepared by adding the functionalized graphene oxide-aluminum hypophosphite flame retardant into polystyrene in a melt blending manner.

Description

technical field [0001] The invention relates to the field of hybrid materials, more specifically, to a functionalized graphene oxide-aluminum hypophosphite flame retardant and its preparation method and application. Background technique [0002] Polystyrene (PS) is formed by polycondensation of styrene monomer free radicals. It is easy to process and shape. It is a widely used polymer and is widely used in packaging materials, electronics industry, construction, household appliances, transportation and other fields. . However, PS is only composed of two elements, carbon and hydrogen. It has a low limiting oxygen index and a high peak heat release rate. When burning, it will not only release a large amount of toxic gas and black smoke, but also cause severe melting and dripping, which is very easy to cause a fire. Hazard; without flame retardant treatment, its application will be limited. [0003] Graphene, as a structurally special carbon material, is composed of sp 2 The...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K9/02C08K3/04C08K3/32C08L25/06
CPCC08K9/04C08K9/02C08K3/042C08K3/32C08L25/06C08K2201/011C08L2201/02Y02E60/10
Inventor 邓贞贞戴康刘古月吴雨彤赵楚雯
Owner GUANGDONG UNIV OF TECH
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