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A kind of graphene composite flame retardant material and preparation method thereof

A technology of graphene composite and flame-retardant materials, which is applied in the direction of graphene and nano-carbon, which can solve the problems of large environmental pollution, open flames on the surface of materials that cannot be extinguished quickly, and large amounts of smoke.

Active Publication Date: 2021-12-24
星途(常州)碳材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing graphene composite flame retardant materials are composites of graphene and inorganic flame retardants, so that the flame retardant effect of the material is average, and the open flame on the surface of the material cannot be extinguished quickly, and when the material is burned, a large amount of smoke will be generated, which is harmful to the environment. more polluted

Method used

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  • A kind of graphene composite flame retardant material and preparation method thereof
  • A kind of graphene composite flame retardant material and preparation method thereof
  • A kind of graphene composite flame retardant material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] A graphene composite flame-retardant material, comprising the following raw materials in parts by weight: 30 parts of modified graphene and 10 parts of flame-retardant additives;

[0046] The graphene composite flame retardant material is made by the following steps:

[0047] Step S1: Add modified graphene and deionized water into the reactor, stir at a speed of 300r / min and a temperature of 35°C, add flame retardant additives and 1-hydroxybenzotriazole, and carry out Stir for 2h to obtain a mixed solution;

[0048] Step S2: Ultrasonicate the mixture obtained in Step S1 at a frequency of 3 MHz for 10 minutes, filter and remove the filtrate, and dry the filter cake at a temperature of 80°C for 2 hours to obtain a graphene composite Flame retardant material.

[0049] Described modified graphene is made by following steps:

[0050] Step A1: Add concentrated sulfuric acid into the reaction kettle, stir at a speed of 150r / min, add graphite and sodium nitrate at a temperat...

Embodiment 2

[0060] A graphene composite flame-retardant material, comprising the following raw materials in parts by weight: 40 parts of modified graphene and 13 parts of flame-retardant additives;

[0061] The graphene composite flame retardant material is made by the following steps:

[0062] Step S1: Add modified graphene and deionized water into the reactor, stir at a speed of 300r / min and a temperature of 40°C, add flame retardant additives and 1-hydroxybenzotriazole, and carry out Stir for 2h to obtain a mixed solution;

[0063] Step S2: Ultrasonicate the mixed liquid obtained in Step S1 at a frequency of 5 MHz for 10 minutes, filter and remove the filtrate, and dry the filter cake at a temperature of 80° C. for 3 hours to obtain a graphene composite Flame retardant material.

[0064] Described modified graphene is made by following steps:

[0065] Step A1: Add concentrated sulfuric acid into the reaction kettle, stir at a speed of 150r / min, add graphite and sodium nitrate at a t...

Embodiment 3

[0075] A graphene composite flame retardant material, comprising the following raw materials in parts by weight: 50 parts of modified graphene and 15 parts of flame retardant additives;

[0076] The graphene composite flame retardant material is made by the following steps:

[0077] Step S1: Add modified graphene and deionized water into the reaction kettle, stir at a speed of 500r / min and a temperature of 40°C, add flame retardant additives and 1-hydroxybenzotriazole, and carry out Stir for 3h to obtain a mixed solution;

[0078] Step S2: Ultrasonicate the mixed liquid obtained in Step S1 at a frequency of 5 MHz for 15 minutes, filter and remove the filtrate, and dry the filter cake at a temperature of 80° C. for 3 hours to obtain a graphene composite Flame retardant material.

[0079] Described modified graphene is made by following steps:

[0080] Step A1: Add concentrated sulfuric acid into the reaction kettle, stir at a speed of 200r / min, add graphite and sodium nitrat...

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Abstract

The invention discloses a graphene composite flame-retardant material and a preparation method thereof. The graphene composite flame-retardant material comprises the following raw materials in parts by weight: 30-50 parts of modified graphene and 10-15 parts of flame-retardant additives; Under the action of 1-hydroxybenzotriazole, the amino group on the flame retardant additive and the carboxyl group on the modified graphene condense between the flame retardant additive and the modified graphene, so that the molecules of the flame retardant additive are fixed on the modified graphene. The surface of the graphene composite flame-retardant material is prepared. The phosphorus oxyacid of the graphene flame-retardant material catalyzes the dehydration of the hydroxyl-containing compound into carbon, and then produces a coke layer on the surface of the material. The coke layer can insulate oxygen and heat. In turn, the flame is extinguished, and at the same time, the smoke generated when the material is burned is very small, and the flame retardant performance of the material will not be reduced due to long-term use.

Description

technical field [0001] The invention relates to the technical field of flame retardant material preparation, in particular to a graphene composite flame retardant material and a preparation method thereof. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. It is a planar film composed of carbon atoms in a hexagonal honeycomb lattice with sp2 hybrid orbitals. It is a two-dimensional film with a thickness of only one carbon atom. As a material, graphene has unique characteristics and excellent properties, such as quantum Hall effect, high modulus, strength and electron migration rate, huge specific surface area, excellent thermal and electrical conductivity, etc. These characteristics and properties make graphene have very broad application prospects in the fields of energy, electronics, catalysis, biomedicine, and composite materials. Due to its good flame retardancy, graphene is widely used in the preparatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/02C08K3/04C08K9/04C08K5/5399C08L27/06C01B32/184
CPCC08K9/02C08K3/042C08K9/04C08K5/5399C01B32/184C08L2201/02C08L27/06
Inventor 崔建强李永锋许鹏天张标
Owner 星途(常州)碳材料有限责任公司
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