Preparation method of BC dry powder extinguishing agent

A technology of dry powder fire extinguishing agent and crushing aid, which is applied in fire protection equipment and other directions, can solve problems such as poor anti-re-ignition performance, and achieve the effects of strengthening hydrophobic performance, improving stability and improving anti-re-ignition effect.

Inactive Publication Date: 2018-12-21
BENGBU LONGTAI FIRE FIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, BC dry powder fire extinguishing agent has poor anti-resurgence performance, and it is difficult to meet the demand of the market.

Method used

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  • Preparation method of BC dry powder extinguishing agent
  • Preparation method of BC dry powder extinguishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of preparation method of BC dry powder fire extinguishing agent, described preparation method comprises the steps:

[0019] S1. Mix the crushing aid and monoammonium phosphate evenly, and crush until more than 90% of the particles in the mixture have a particle size smaller than 6um to obtain a base material;

[0020] S2. Add hydrophobic white carbon black to the base material, stir once, heat up to 58°C, add polyether modified silicone surfactant, stir twice, heat up to 109°C, stir three times, stir four times to obtain BC dry powder Extinguishing agent.

Embodiment 2

[0022] A kind of preparation method of BC dry powder fire extinguishing agent, described preparation method comprises the steps:

[0023] S1. Mix the crushing aid and monoammonium phosphate evenly, and crush until more than 90% of the particles in the mixture have a particle size smaller than 6um to obtain a base material;

[0024] S2. Add hydrophobic white carbon black to the base material, stir once, heat up to 63°C, add polyether modified silicone surfactant, stir twice, heat up to 112°C, stir three times, stir four times to obtain BC dry powder Extinguishing agent;

[0025] Among them, in S1, the crushing aid is composed of mica powder and silica powder in a mass ratio of 1:1.

Embodiment 3

[0027] A kind of preparation method of BC dry powder fire extinguishing agent, described preparation method comprises the steps:

[0028] S1. Mix the crushing aid and monoammonium phosphate evenly, and crush until more than 90% of the particles in the mixture have a particle size smaller than 6um to obtain a base material;

[0029] S2. Add hydrophobic white carbon black to the base material, stir once, heat up to 60°C, add polyether modified silicone surfactant, stir twice, heat up to 110°C, stir three times, stir four times to obtain BC dry powder Extinguishing agent;

[0030] Among them, in S1, the crushing aid is composed of mica powder and silica powder in a mass ratio of 1:1;

[0031] In S2, hydrophobic silica is obtained by modifying silica with alkoxy silicone oil;

[0032] In S2, the primary stirring speed is 2000r / min, and the primary stirring time is 25min;

[0033] In S2, the secondary stirring speed is 1800r / min, and the secondary stirring time is 25min;

[003...

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Abstract

The invention relates to the technical field of an extinguishing agent, and particularly discloses a preparation method of a BC dry powder extinguishing agent. The preparation method comprises the steps as follows: uniformly mixing a grinding assistant and monoammonium phosphate, and grinding to a state that particle sizes of more than 90% of particles in a mixture are smaller than 6mum so as to obtain a matrix; and adding hydrophobic white carbon black into the matrix, carrying out primary stirring, warming to a temperature of 56 to 65 DEG C, adding a polyether modified organic silicon surfactant, carrying out secondary stirring, warming to a temperature of 105 to 115 DEG C, carrying out tertiary stirring, and carrying out quartus stirring to obtain the BC dry powder extinguishing agent.The BC dry powder extinguishing agent obtained by the preparation method has excellent reburning resistance.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing agents, in particular to a preparation method of a BC dry powder fire extinguishing agent. Background technique [0002] Fires are usually divided into five categories ABCDE, where A category refers to solid material fires, B category refers to liquid or soluble solid substance fires, C category refers to gas fires, D category refers to metal fires, and E category refers to live fires, that is, objects are charged and burned fire. Therefore, according to the nature and characteristics of various fires, different types of fire extinguishing agents need to be selected. [0003] BC dry powder fire extinguishing agent, with sodium bicarbonate or potassium bicarbonate as the main raw material, this type of dry powder fire extinguishing agent can only be used for BCE fires; it mainly uses the bicarbonate in the dry powder to be decomposed by high temperature, releasing a large amount of carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/06
CPCA62D1/0014A62D1/06
Inventor 卢思迪王伟鲁怀宁左振王哲
Owner BENGBU LONGTAI FIRE FIGHTING
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