Graphene composite flame-retardant material and preparation method thereof

A graphene composite, flame-retardant material technology, applied in the direction of graphene, nano-carbon, etc., can solve the problems of large environmental pollution, general flame-retardant effect of materials, and large amount of smoke generated.

Active Publication Date: 2021-03-09
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

Method used

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  • Graphene composite flame-retardant material and preparation method thereof
  • Graphene composite flame-retardant material and preparation method thereof
  • Graphene composite flame-retardant material and preparation method thereof

Examples

Experimental program
Comparison scheme
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 a flame-retardant additive, under the action of 1-hydroxyl benzotriazole, amino of the flame-retardant additive and carboxyl of the modified graphene carry out condensation, so that flame-retardant additive molecules are fixed on the surface of the modified graphene, thereby obtaining the graphene composite flame-retardant material. According to the graphene flame-retardant material, oxygen-containing acid of phosphorus catalyzes a hydroxyl-containing compound to be dehydrated into carbon, then a coke layer is generated on the surface of the material, the coke layer can isolate oxygen and heat to extinguish flame, meanwhile, little smoke is generated when the material is combusted, and the flame-retardant performance of the material cannot be reduced due to long-time 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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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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