CN110917551A

CN110917551A - Water sand dry powder extinguishing agent

Info

Publication number: CN110917551A
Application number: CN201811093058.XA
Authority: CN
Inventors: 徐金海
Original assignee: SUZHOU WUYUE SYNTHETIC FIRE SCI-TECH Co Ltd
Current assignee: SUZHOU WUYUE SYNTHETIC FIRE SCI-TECH Co Ltd
Priority date: 2018-09-19
Filing date: 2018-09-19
Publication date: 2020-03-27

Abstract

The invention discloses a water sand dry powder extinguishing agent which comprises, by mass, 0.1-0.8% of a surfactant, 3-12% of mica powder, 5-8% of talcum powder, 2-5% of water sand, 40-55% of magnesium hydroxide, 30-40% of aluminum hydroxide, 0.15-1.2% of hydrogen-containing silicone oil, 0.15-0.25% of a foaming agent, 0.3-0.5% of a stabilizer and 2-6% of white carbon black. The magnesium hydroxide and the aluminum hydroxide used in the invention are easy to realize, have wide sources, and belong to nontoxic, green and environment-friendly efficient flame retardants; the used surfactant optimizes the particle state of the superfine dry powder extinguishing agent, and has less agglomeration and good dispersion.

Description

Water sand dry powder extinguishing agent

Technical Field

The invention relates to the technical field of fire extinguishing agents, in particular to a water sand dry powder fire extinguishing agent.

Background

The traditional dry powder extinguishing agent has the characteristics of wide fire type application, low toxicity to the environment, suitability for water-deficient areas and the like, but the extinguishing capability is limited due to the fact that the white radical capturing capability of most dry powder is small because the particle size of the dry powder is large, the particle dispersibility is poor and the specific surface area is small, and the application range of the dry powder extinguishing agent is limited to a certain extent. And the traditional dry powder extinguishing agent usually adopts inorganic salt as a base material, such as sodium bicarbonate, ammonium phosphate salt, amino dry powder and the like. The sodium bicarbonate dry powder extinguishing agent has poor extinguishing capability and is not suitable for A-type fires; the ammonium phosphate salt and the amino dry powder extinguishing agent have relatively high price although the application range is wide. Magnesium hydroxide as a fire extinguishing agent has the advantages of no toxicity, no smoke, drip resistance, acid resistance, good filling and flame retardant effects, stable chemical properties of a decomposition product (magnesium oxide), no secondary harm and the like, and becomes an important inorganic flame retardant for reducing and inhibiting smoke. The decomposition dehydration temperature of the magnesium hydroxide is 340-490 ℃, is higher than that of the aluminum hydroxide (200-350 ℃), and has better thermal stability; magnesium hydroxide has higher decomposition energy and heat capacity than aluminum hydroxide, and is helpful for improving the fire extinguishing efficiency; the magnesium hydroxide also has the advantages of easily obtained raw materials, low cost and the like. Compared with the traditional dry powder base material, Mg (OH)2 used as the base material is applied to the dry powder extinguishing agent, and has wide application prospect and market potential.

Disclosure of Invention

The invention aims to provide a water sand dry powder extinguishing agent to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the water sand dry powder extinguishing agent comprises, by mass, 0.1-0.8% of a surfactant, 3-12% of mica powder, 5-8% of talcum powder, 2-5% of water sand, 40-55% of magnesium hydroxide, 30-40% of aluminum hydroxide, 0.15-1.2% of hydrogen-containing silicone oil, 0.15-0.25% of a foaming agent, 0.3-0.5% of a stabilizer and 2-6% of white carbon black.

Further, the surfactant is sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, hexadecyl trimethyl ammonium bromide or hexadecyl trimethyl ammonium chloride.

Further, the average particle size of the surfactant is less than 2 μm.

Furthermore, the particle size of the magnesium hydroxide and the aluminum hydroxide is less than 2 μm.

Compared with the prior art, the invention has the beneficial effects that: the product prepared by the invention has low cost, and solves the problem of high cost of the superfine dry powder extinguishing agent in the prior art; the magnesium hydroxide and the aluminum hydroxide used in the invention are easy to realize, have wide sources, belong to nontoxic, green and environment-friendly efficient flame retardants, and have high fire extinguishing performance after being used together; the used surfactant optimizes the particle state of the superfine dry powder extinguishing agent, has less agglomeration and good dispersion, improves the comprehensive characteristics of the superfine dry powder extinguishing agent powder under the combined action of mica powder, white carbon black auxiliary agent and the like, and can improve and meet the fire extinguishing requirement.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: (1) firstly, uniformly mixing 52 parts of magnesium hydroxide and 32 parts of aluminum hydroxide in stirring equipment, starting heating, and sequentially adding 0.4 part of surfactant, 5 parts of mica powder, 6 parts of talcum powder and 2 parts of water sand in proportion to mix under the condition of continuous stirring to obtain an intermediate product A, wherein the temperature is 60-70 ℃; (2) dissolving 0.2 part of hydrogen-containing silicone oil in a stabilizer, and adding a quantitative foaming agent under the condition of stirring to obtain an intermediate product B; and (3) A, B is uniformly mixed in a stirring device at 100-120 ℃, 4 parts of white carbon black are added to be uniformly mixed and stirred after the stabilizer and the foaming agent are volatilized, and finally the final product is obtained.

Example 2: (1) firstly, uniformly mixing 46 parts of magnesium hydroxide and 38 parts of aluminum hydroxide in stirring equipment, starting heating, and sequentially adding 0.5 part of surfactant, 4 parts of mica powder, 7 parts of talcum powder and 2 parts of water sand in proportion to mix under the condition of continuous stirring to obtain an intermediate product A, wherein the temperature is 60-70 ℃; (2) dissolving 0.2 part of hydrogen-containing silicone oil in a stabilizer, and adding a quantitative foaming agent under the condition of stirring to obtain an intermediate product B; and (3) A, B is uniformly mixed in a stirring device at 100-120 ℃, after the stabilizer and the foaming agent volatilize, 3 parts of white carbon black are added and uniformly mixed, and finally the final product is obtained.

Example 3: (1) firstly, uniformly mixing 40 parts of magnesium hydroxide and 50 parts of aluminum hydroxide in a stirring device, starting heating, and sequentially adding 0.5 part of surfactant, 2 parts of mica powder, 5 parts of talcum powder and 2 parts of water sand in proportion to mix under the condition of continuous stirring to obtain an intermediate product A, wherein the temperature is 60-70 ℃; (2) dissolving 0.2 part of hydrogen-containing silicone oil in a stabilizer, and adding a quantitative foaming agent under the condition of stirring to obtain an intermediate product B; and (3) A, B is uniformly mixed in a stirring device at 100-120 ℃, after the stabilizer and the foaming agent volatilize, 2 parts of white carbon black are added and uniformly mixed, and finally the final product is obtained.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The water sand dry powder extinguishing agent comprises, by mass, 0.1-0.8% of a surfactant, 3-12% of mica powder, 5-8% of talcum powder, 2-5% of water sand, 40-55% of magnesium hydroxide, 30-40% of aluminum hydroxide, 0.15-1.2% of hydrogen-containing silicone oil, 0.15-0.25% of a foaming agent, 0.3-0.5% of a stabilizer and 2-6% of white carbon black.

2. The water sand dry powder extinguishing agent according to claim 1, wherein the surfactant is sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, cetyltrimethyl ammonium bromide or cetyltrimethyl ammonium chloride.

3. A water sand dry powder extinguishing agent according to claim 1 or 2, wherein the average particle size of the surfactant is less than 2 μm.

4. A water sand dry powder extinguishing agent according to claim 1 or 2, wherein the particle size of the magnesium hydroxide and the aluminum hydroxide is below 2 μm.

5. The water sand dry powder extinguishing agent as claimed in claim 3, wherein the particle size of the magnesium hydroxide and the aluminum hydroxide is below 2 μm.