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Preparation method of fire retardant

A technology of flame retardant and foaming agent, applied in the direction of fire prevention equipment, etc., can solve the problems of general flame retardant effect, environmental pollution, impact on the environment, etc., and achieve the effect of good flame retardant effect, long service life and simple process

Inactive Publication Date: 2017-04-19
李锡春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of using dry powder fire extinguishers are: large dust after spraying, which affects the environment; chemical reaction with free radicals or active groups generated by fuel during combustion causes environmental pollution problems; general flame retardant effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix the flame retardant component and small molecule water at a mass ratio of 3:7, then add it to an ultrafine grinder and grind it to 4000-6000 mesh, then grind it to 8000-10000 mesh in an ultrafine horizontal sand mill, and finally add 0.5% blowing agent, that is;

[0023] Taking the weight of the flame retardant component as 100%, the flame retardant component is composed of the following raw materials:

[0024] Aluminum hydroxide 30%;

[0025] Magnesium hydroxide 69.4%;

[0026] Calcined kaolin 0.3%;

[0027] Sodium carbonate 0.3%.

[0028] The flame retardant prepared in the embodiment was tested, and the oxygen index was measured to be 35%, the afterflame time was 2s, and the carbonization length was 98mm.

Embodiment 2

[0030] Mix the flame retardant component and small molecule water at a mass ratio of 3:7, then add it to an ultrafine grinder and grind it to 4000-6000 mesh, then grind it to 8000-10000 mesh in an ultrafine horizontal sand mill, and finally add 0.5% blowing agent, that is;

[0031] Taking the weight of the flame retardant component as 100%, the flame retardant component is composed of the following raw materials:

[0032] Aluminum hydroxide 20%;

[0033] Magnesium hydroxide 79.4%;

[0034] Calcined kaolin 0.2%;

[0035] Sodium carbonate 0.3%.

[0036] The flame retardant prepared in the embodiment was tested, and the oxygen index was measured to be 34%, the afterflame time was 3s, and the carbonization length was 112mm.

Embodiment 3

[0038] Mix the flame retardant component and small molecule water at a mass ratio of 3:7, then add it to an ultrafine grinder and grind it to 4000-6000 mesh, then grind it to 8000-10000 mesh in an ultrafine horizontal sand mill, and finally add 0.5% blowing agent, that is;

[0039] Taking the weight of the flame retardant component as 100%, the flame retardant component is composed of the following raw materials:

[0040] Aluminum hydroxide 40%;

[0041] Magnesium hydroxide 59.45%;

[0042] Calcined kaolin 0.3%;

[0043] Sodium carbonate 0.25%.

[0044] The flame retardant prepared in the embodiment was tested, and the oxygen index was measured to be 34%, the afterflame time was 2s, and the carbonization length was 125mm.

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Abstract

The invention relates to a preparation method of a fire retardant. According to the preparation method of the fire retardant, firstly, anti-flaming components are mixed with small-molecule water at the mass ratio of 3:7; secondly, the mixture is fed into a superfine grinding machine to be ground to reach the particle size of 4000-6000 meshes; thirdly, the mixture is ground by a superfine horizontal sand mill to reach the particle size of 8000-10000 meshes; and finally, a foaming agent is added, and then the fire retardant is obtained. The fire retardant is composed of, by weight percentage, 20%-44.6% of aluminum hydroxide, 55%-79.5% of magnesium hydroxide, 0.2%-0.4% of calcinated kaolin and 0.2%-0.4% of sodium carbonate. By the adoption of the preparation method of the fire retardant, the technology is simple, the completely environment-friendly type inorganic materials are adopted, the specific surface area of powder is increased after superfine grinding, after the completely environment-friendly type inorganic materials are dissolved in the small-molecule water, the prepared fire retardant has a good anti-flaming effect and is safe, convenient and rapid to use and environmentally friendly, a flame can be extinguished as long as a user slightly sprays the fire retardant to the flame, cleaning is convenient after the fire retardant is used, and environmental pollution is avoided.

Description

technical field [0001] The invention belongs to the technical field of chemical additives, in particular to a combustion additive. Background technique [0002] At present, most household fire extinguishers are dry powder fire extinguishers, which are filled with ammonium phosphate dry powder fire extinguishing agent. Dry powder fire extinguishing agent is a dry and easy-flowing fine powder used for fire extinguishing. It is composed of inorganic salts with fire extinguishing efficiency and a small amount of Additives are dried, pulverized, and mixed to form fine solid powders. Dry powder fire extinguishing agents are generally divided into two categories: BC dry powder fire extinguishing agent (sodium bicarbonate) and ABC dry powder (ammonium phosphate). The volatile decomposition products have chemical inhibition and side catalysis with the free radicals or active groups produced by the fuel during the combustion process, so that the chain reaction of combustion is interru...

Claims

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Application Information

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IPC IPC(8): A62D1/00A62D1/02
CPCA62D1/0028A62D1/0071
Inventor 李锡春李俊
Owner 李锡春