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Graphene-based water-based intumescent fireproof coating and preparation method thereof

A fire retardant coating, olefin-based water-based technology, applied in the direction of fire retardant coatings, coatings, etc., can solve the problems of smoke suppression effect to be improved, short fire protection time, poor carbon layer strength, etc., to achieve excellent water solubility, small structural damage, The effect of a low number of slices

Inactive Publication Date: 2020-07-31
QINGDAO AIR NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing water-based intumescent fire retardant coating technologies are prepared with acrylic emulsion or vinyl acetate emulsion as the base material, adding intumescent flame retardant fillers. This technology generally suffers from poor strength of the carbonaceous layer after the fire retardant coating is burned, short fire protection time, and low fire resistance. The problem that the smoke effect needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The invention provides a graphene-based water-based intumescent fireproof coating, and the fireproof coating comprises: a graphene-based acrylic acid emulsion, and the preparation method of the graphene-based acrylic acid emulsion comprises the following steps:

[0034] S1. Grafting alcohol hydroxyl groups on the surface of graphene to obtain alcohol hydroxylated graphene;

[0035] S2. Grafting the initiator ACVA on the alcohol-hydroxylated graphene to prepare a graphene-based initiator;

[0036] S3. Using a graphene-based initiator to initiate the polymerization of acrylic acid monomers to prepare a graphene-based acrylic acid emulsion.

[0037] Concretely, the preparation method of the above-mentioned alcohol hydroxylated graphene comprises: mixing 5 mg·ml -1 Hydroxy-containing aromatic amines, 5mg·ml -1 The sodium nitrite solution was added to the o-dichlorobenzene dispersion containing graphene, and the temperature was raised to 70° C. for 4 hours to obtain alcoho...

Embodiment 2

[0052] The invention provides a graphene-based water-based intumescent fireproof coating, and the fireproof coating comprises: a graphene-based acrylic acid emulsion, and the preparation method of the graphene-based acrylic acid emulsion comprises the following steps:

[0053]S1. Grafting alcohol hydroxyl groups on the surface of graphene to obtain alcohol hydroxylated graphene;

[0054] S2. Grafting the initiator ACVA on the alcohol-hydroxylated graphene to prepare a graphene-based initiator;

[0055] S3. Using a graphene-based initiator to initiate the polymerization of acrylic acid monomers to prepare a graphene-based acrylic acid emulsion.

[0056] Concrete, the preparation method of above-mentioned alcohol hydroxylated graphene comprises:

[0057] S11. Put potassium and graphite in a container, place the container in an oil bath at 110°C, evacuate for 30 minutes, then heat up to 150°C for 24 hours, then cool to room temperature, wherein the mass ratio of potassium to gra...

Embodiment 3

[0074] The invention provides a graphene-based water-based intumescent fireproof coating, and the fireproof coating comprises: a graphene-based acrylic acid emulsion, and the preparation method of the graphene-based acrylic acid emulsion comprises the following steps:

[0075] S1. Grafting alcohol hydroxyl groups on the surface of graphene to obtain alcohol hydroxylated graphene;

[0076] S2. Grafting the initiator ACVA on the alcohol-hydroxylated graphene to prepare a graphene-based initiator;

[0077] S3. Using a graphene-based initiator to initiate the polymerization of acrylic acid monomers to prepare a graphene-based acrylic acid emulsion.

[0078] Concrete, the preparation method of above-mentioned alcohol hydroxylated graphene comprises:

[0079] S11. Put potassium and graphite in a container, place the container in an oil bath at 110°C, evacuate for 30 minutes, then heat up to 150°C for 24 hours, then cool to room temperature, wherein the mass ratio of potassium to gr...

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Abstract

The invention provides a graphene-based water-based intumescent fireproof coating and a preparation method thereof. The graphene-based water-based intumescent fireproof coating comprises a graphene-based acrylic emulsion, the preparation method comprises the following steps: grafting an alcoholic hydroxyl group on the surface of graphene to obtain alcohol hydroxylated graphene; grafting initiatorACVA on the alcohol hydroxylated graphene to prepare a graphene-based initiator; initiating an acrylic monomer to polymerize by using the graphene-based initiator to prepare a graphene-based acrylic emulsion; wherein most of the graphene-based initiator inherits the inherent structure and performance of original graphene and has excellent water solubility, so that the graphene-based initiator is completely suitable for initiating acrylic monomers, graphene has many excellent characteristics and a two-dimensional lamellar structure, so that a compact isolation layer can be formed in the fireproof coating, and a flame-retardant effect is achieved; meanwhile, graphene and a matrix are crosslinked and compounded to form a protective layer, so that overflow of solid particles formed in the combustion process is effectively inhibited, and the smoke inhibition effect is remarkable.

Description

technical field [0001] The invention relates to the technical field of water-based fireproof coatings, more specifically, the invention relates to a graphene-based water-based intumescent fireproof coating and a preparation method thereof. Background technique [0002] Fire retardant coatings are also known as flame retardant coatings. Intumescent fire retardant coatings have two special properties: one is that the coating itself is non-combustible or flame retardant, that is, it can prevent being ignited by flames; the other is that the coating can ignite during combustion. The bubble expands, delays the heat from spreading to the protected substrate, and buys time for fire fighting. Intumescent fire retardant coatings have been widely used in steel and wood structures. [0003] Most of the existing water-based intumescent fire retardant coating technologies are prepared with acrylic emulsion or vinyl acetate emulsion as the base material, adding intumescent flame retardan...

Claims

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Application Information

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IPC IPC(8): C09D133/08C09D5/18C08F220/18C08F220/14C08F220/06
CPCC08F220/18C09D5/185C09D133/064
Inventor 王宝柱常海燕周莲洁乔洪冰李永岗郭磊
Owner QINGDAO AIR NEW MATERIALS