JPS5829473A - Foam fire fighting agent - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention The present invention uses a #1 #I explosive (preferably aqueous This relates to membrane 7 type 1m performance machine fire extinguishing agent (hereinafter sometimes referred to as fire extinguishing agent).

In recent years, fire extinguishing foam compositions have been developed and put into practical use as foam extinguishing agents, which contain a fluorine-based surfactant that has the ability to form water formation in addition to the ability to form foam. This fluorine-based surfactant is a derivative of fluorocarboxylic acid, C,F,,C00I(,C,F,
800H is used. It is used by filling a fire extinguisher as an aqueous solution containing 3 volumes or 6 volumes of a commercially available aqueous film-forming foam fire extinguishing agent (fluorosurfactant). The aqueous solution is extinguished by radiation.
It has excellent extinguishing ability against flammable liquids due to the formation of oil and water formation along with the formation of the pond bed, but since water is the main component, its extinguishing ability against general fires is poor, and its freezing point is also similar to that of water. It is impossible to use in cold regions because the temperature is close to the freezing point. ・The usual countermeasure for this is to use various additives such as anti-Al liquid and compounds with fire extinguishing effect, but in this case, these additives The stability of the composition, including the agent, is extremely important. That is, it is necessary that the performance and stability as an aqueous solution can be maintained without suspension of the surfactant caused by the additive, or a decrease in foaming properties due to the influence of the additive. When used as a fire extinguishing agent for fire extinguishers, it is important to have excellent stability at low temperatures as well as at high temperatures above room temperature. The composition is often heated to 40° C. or higher, such as outdoors in the summer, and even in such cases, it is necessary that the composition is stable and does not undergo suspension, coagulation, or layer separation.

As mentioned above, A
Powerful enough to withstand fires and low temperatures? #3 There is a demand for a stable foam fire extinguishing agent for fires, but woodcutters have already proposed a water-based fire extinguishing agent that increases the total extinguishing force for A fires and has a low freezing point and can be used in cold regions. .

For example, by adjusting the ratio of the phosphate components using a mixture of phosphoric acid, ammonia, and monoethanolamine, the fire extinguishing ability can be increased to 3AA-3AA when the freezing point is below -20°C.
4 can be obtained (Publication Patent Publication No. 55-67995)
By using ammonium sulfate, urea, and a small amount of trisodium phosphate, a product having a freezing point of -20℃51 and a total extinguishing power of -2 can be obtained (Kokoku Patent Publication No. 56896/1989).
In addition, regarding fire extinguishing electrical painting using fluorine-based surfactants, we use
It is possible to obtain a total fire extinguishing force of 20℃ or less SL person-2 (Published % Pestle Bulletin Showa 55-14058), ■ Using ammonium sulfate, urea, and polyvinyl alcohol, freezing point -15t: Below, 3t μm-1 You can get things (public license publication @50-27598),
etc. have been proposed.

Water-Based Fire Extinguishing Agent Regarding the above example, an attempt is made to apply it to a water film forming mechanical foam fire extinguishing agent.If a commercially available water film forming foam fire extinguishing agent is mixed as a fluorosurfactant, I! If left in a cloudy state, layer separation occurred and it became unusable. or,
In the case of examples (1) and (2) above, where a fire extinguishing agent using a fluorine-based surfactant is proposed, suspensions are formed at room temperature as a result of using a commercially available water-forming foam extinguishing agent as a fluorine-based surfactant. When 65CK was heated and allowed to cool, layer separation occurred. As described above, it is necessary to solve these problems in order to make the commercially available aqueous Il and pond extinguishing bases highly practical for use in aqueous film-forming mechanical foam fire extinguishing agents.

As a result of various studies on these problems, the present inventors discovered that the problems could be solved by using sulfamate, and arrived at the present invention. As is clear from the above, an object of the present invention is to provide a high-performance mechanical fire extinguishing foam that maintains high fire extinguishing ability against fires and is stable even at low and high temperatures. .

The fire extinguishing foam of the present invention is characterized in that it is an aqueous solution containing ammonium sulfamate and urea as main components and a fluorosurfactant.

The content of ammonium sulfate in the fire extinguishing agent 100 in the present invention is 5 to 40 f, and the total content of ammonium sulfamate, mu and urea is 15 f.
That's all. Also, what is the weight ratio of urea to ammonium sulfate?

It is 0.5-10.

The foam fire extinguishing agent of the present invention becomes even more stable by adding water-soluble rmin to the treatment. The method is to add a water-soluble aqueous solution to an aqueous solution of ammonium sulfamate and stir or heat and comb (to expel the generated ammonia gas, then mix urea, fluorine thread surfactant, water, etc.) Method: Water S* made from ammoecium sulfamate, urea, 7-base WI activator, etc.
A method of removing ammonia gas produced by adding a water-soluble amine to the mixture. After reacting water-soluble ammonium with sulfanoic acid, ammonium sulfazunate 1
Method for mixing m, 7 S* surface active agents, sulfaelectron, ammonicum sulfaelectroate.

There are many ways to mix urea and fluorosurfactants.

By the treatment of water-soluble eine in the present invention, part or most of the water-soluble ammonium sulfanophosphate is converted to the water-soluble amine salt KR, resulting in a more stable ll11iI explosive.

Those used as aqueous alkyl amines include alkylaines such as methyl amines, glutinous amines, etc.;
Ethanol ann.

Various amines such as realkalkanolamines (including mono-, di-, and)-v alkanolamines such as panolamine, getanolamine, etc., 7x'3xyamines such as methoxygumiviramine, and ethoxypropylamine. It is.

Is the amount of water S property 1ζ used in this book J1 stable at low and high temperatures? The minimum amount needed to maintain I- is sufficient, but even less than 1% is effective. In addition, by increasing the amount of water-soluble amine used, stability at low and high temperatures can be improved, but since water-soluble organic amines are tAa, the amount must be kept at a level that does not impede the fire extinguishing effect. is 3096 of all fire extinguishing agents
It is essential to keep it at 11IL below. The amount usually used is preferably about 1 to 15%.

The fire extinguishing agent of this invention may be prepared by any method as long as the prescribed ingredients are mixed and stirred.

Stirring may be performed by IUI or by heating (at 10 °C or less). In addition, other additives may be added as required.

As a warping additive, potassium acetate, horse mackerel ammoekum, puwa pion shun natotsuugo, etc.
Salt, ethylene glycol.

10 Birendatucol, Glyryurin, triethylene glycol-J- and other polyvalent monophonic coals, sodium alginate, polyacrylic acid and its sodium salt, and other water-soluble polymers, chloride! Water-soluble inorganic salts such as gnesicum, sodium chloride, and ammonium chloride may be used alone or in combination. By adding these additives, it is still possible to obtain products with increased stability over a wider temperature range 1i.

The mechanical foam extinguishing agent containing the 9 fluorine-based surfactant of the present invention maintains the ability to fight both fires A and B, and has extremely high stability at low and high temperatures, such as -
Stable products can also be obtained at temperatures below 20°C and above +70°C. In addition, even if the foam fire extinguishing agent of the present invention is heated to a temperature higher than the wet ash at which M turbidity is generated and 15tI#Lin is generated, if it is allowed to cool and the temperature is lowered to below ii* where mturbidity has stopped, the layer It will not cause any damage as it will turn back into a clear aqueous solution without separating.

The present invention will be described below with reference to practical implementation and comparative examples.

Tortoise that produces turbidity as an excellent method for stability at high temperatures *
Expressed as Va* and measured by the measurement method described below, Ifk*! at high temperature! ! was evaluated.

Condensation point "Extinguishing 17 hours, m Daidenga's certification 11JIIJ was measured.

``Fire extinguishing test ``Ministerial ordinance that stipulates technical standards for fire extinguishers J Km zumu fire and B large fire tests were conducted.

Pour the image sample ball 100- into a beaker, and slowly heat and raise the temperature from the outside while stirring to prevent the koji from standing up.

If the liquid becomes cloudy due to heating, stop heating and try again! 2!
After cooling, the sgpc disappears, so the temperature is measured and this temperature is taken as the cloud point.

Real vagina fi1-4 Predetermined amounts of ammoecium sulfamate, urea, glupylene glyph, and fluoro-bulk M surfactant (j1!i)
Water was added to the mixture and mixed with stirring to make a 10L aqueous solution, which was then used as a water extinguishing agent.

# Table 1 shows the measurement results of the physical properties of the foam fire extinguishing agent.

When the fire extinguishing foam obtained in Examples 1 and 3.4 was heated for 65 CK and then allowed to cool, it became transparent below the image point.

Table 1 Book 2)
I 5% Book 5)
l”C-200 Comparative Examples 1 and 2 DKil instead of ammonium sulfamate in Example 3
Shun ammonium (Comparative Example 1) or a 1=1 mixture of 1 ammonium phosphate and 112 ammonium phosphorus (Comparative Example 2) was used, and the other formulations were the same as shown in Table 2. After the suspension and insoluble matter have stopped and it is allowed to stand still,
Layer separation occurred. It was not possible to measure the parabolic value/Ii.

Comparative Example 3 The same procedure as in Example 3 was carried out except that 〆X was omitted and ammonium sulfur 7< phosphate v,/sb was used. The results are shown in Table 2.

Table 2 Book 6) Room Temperature and Low Temperature Examples 5 to 12 The formulations shown in Table 3 were mixed and stirred to form a 10 L aqueous solution to produce a water film forming mechanical foam fire extinguishing agent.

Table 3 shows the results of determining the physical properties.

Comparison f14-7 Although the mixture was mixed and stirred according to the formulation shown in Table 4, it was suspended at room temperature and did not become transparent at low temperature. After heating to 65°C, layer separation occurred. Therefore, physical properties could not be measured.

Claims (1)

[Scope of Claims] 41) A mechanical foam fire extinguishing agent which is characterized in that it is an aqueous solution containing ammonium fernate and urea as main components and a fluorine surfactant. (2) Add water @ 1 lvc water-borne amine! A11 Claim i1m $1 The foam fire extinguishing agent described in item (1). (3) The fire extinguishing foam agent according to claim (1), which is characterized by sulfamine ammonicum which is I& type with a canteen amine. (4) The foam fire extinguishing agent according to claim (1), which is added by reacting fannshun to water S method Aken and Su. Excellent) A pond fire extinguishing agent according to claims sM(2) to (4), wherein water is added to an amount of less than 30% by weight of the entire extinguishing agent. (6) Alkaline salts of lower fatty acids, polyhydric alcohols, water #
! ! Claim III containing one or more selected from a polymer compound and a water-soluble inorganic salt.
1. Extinguishing agent described in (1) to (1) to (1).