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High-flame-retardant DOPO functionalized graphene oxide/ZIF-8 composite material and preparation method thereof

A technology of ZIF-8 and composite materials, which is applied in the field of high flame-retardant DOPO functionalized graphene oxide/ZIF-8 composite materials and its preparation, achieving good environmental compatibility, low cost and simple process

Inactive Publication Date: 2020-06-05
SHAANXI 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 few reports on the application of DOPO functionalized graphene oxide and ZIF-8 in flame retardancy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The invention relates to a preparation method of a highly flame-retardant DOPO functionalized graphene oxide / ZIF-8 composite material.

[0021] Specifically, it is realized by the following steps:

[0022] Dissolve 1.5-3.0 parts of zinc nitrate in 8 parts of deionized water, stir magnetically for 10 minutes, then add 0.3-0.6 parts of DOPO functionalized graphene oxide, stir and sonicate for 30 minutes to obtain solution A; 28.7-57.4 parts of 2-methylimidazole Dissolve in 80 parts of deionized water, stir magnetically for 10 minutes to obtain solution B, pour solution B into solution A, stir for 120 minutes; centrifuge at 10,000 r / min for 10 minutes, wash with deionized water several times, and dry at 65°C to obtain D-GO / ZIF-8 composite. The above proportions are parts by weight.

Embodiment 1

[0024] Dissolve 1.5 parts of zinc nitrate in 8 parts of deionized water, stir magnetically for 10 minutes, then add 0.3 parts of DOPO functionalized graphene oxide, stir and sonicate for 30 minutes to obtain solution A; 28.7 parts of 2-methylimidazole are dissolved in 80 parts of deionized In water, magnetically stirred for 10 minutes to obtain solution B. Pour solution B into solution A and stir for 120 minutes; centrifuge at 10,000 r / min for 10 minutes, wash with deionized water several times, and dry at 65°C to obtain D-GO / ZIF-8 composite material . The above proportions are parts by weight.

[0025] Wherein, the preparation method of DOPO functionalized graphene oxide:

[0026] (1) Synthesis of phosphorus-containing silicon compound:

[0027] In a 50 mL reaction vessel, add 2.27 g of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 1.11 g of γ-aminopropyltriethoxysilane, and 0.32 g of paraformaldehyde Dissolve it in 30 mL of chloroform, and stir for 24 h at a reactio...

Embodiment 2

[0031] 2.3 parts of zinc nitrate were dissolved in 8 parts of deionized water, stirred magnetically for 10 minutes, then 0.5 parts of DOPO functionalized graphene oxide was added, stirred and ultrasonically treated for 30 minutes to obtain solution A; 43.0 parts of 2-methylimidazole was dissolved in 80 parts of deionized In water, magnetically stirred for 10 minutes to obtain solution B. Pour solution B into solution A and stir for 120 minutes; centrifuge at 10,000 r / min for 10 minutes, wash with deionized water several times, and dry at 65°C to obtain D-GO / ZIF-8 composite material . The above proportions are parts by weight.

[0032] Wherein, the preparation method of DOPO functionalized graphene oxide is the same as that in Example 1.

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Abstract

The invention relates to a high-flame-retardant DOPO functionalized graphene oxide / ZIF-8 composite material and a preparation method thereof, wherein the composite material has a synergistic flame retardant effect; compared with a single-component flame retardant, the flame retardant property of the composite material is more excellent. The preparation method comprises the following steps: dissolving 1.5-3.0 parts of zinc nitrate into 8 parts of deionized water, magnetically stirring the mixture for 10min, then adding 0.3-0.6 part of DOPO functionalized graphene oxide, stirring the mixture, and carrying out ultrasonic treatment for 30min to obtain a solution A; dissolving 28.7-57.4 parts of 2-methylimidazole into 80 parts of deionized water, magnetically stirring the mixture for 10 minutesto obtain a solution B, pouring the solution B into the solution A, and stirring the mixture for 120 minutes; centrifuging a reaction product for 10 min at 10000 r / min, repeatedly washing the reaction product with deionized water, and drying the reaction product at 65 DEG C so as to obtain the DOPO functionalized graphene oxide / ZIF-8 composite material.

Description

Technical field: [0001] The invention relates to a preparation method of a high flame-retardant composite material, in particular to a high flame-retardant DOPO functionalized graphene oxide / ZIF-8 composite material and a preparation method thereof. Background technique: [0002] In recent years, with the rise of metal-organic framework materials, researchers have found that they have certain flame-retardant properties and can be used as a new type of organic-inorganic hybrid flame retardant [Xu W, Wang G, Xu J, et al .Modification of diatomite with melamine coated zeolitic imidazolate framework-8 as an effective flame retardant to enhance flame retardancy and smoke suppression of rigid polyurethane foam[J].Journal of hazardous materials,2019,379:120819.]. However, a single metal-organic framework material as a flame retardant cannot meet people's needs, so it is imperative to prepare a high flame-retardant composite material. Zeolitic imidazole frameworks (ZIFs), as a subs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C08K9/04C08K3/04C08K5/5313
CPCC08G83/008C08K5/5313C08K9/04C08K3/042
Inventor 吕斌刘慧慧高党鸽马建中
Owner SHAANXI UNIV OF SCI & TECH
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