KR101654579B1 - Neutral reinforced fire extinguishing agent composition having excellent fire extinguishing property and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a strengthened liquid extinguishing agent excellent in extinguishing performance and a method for producing the same. The present invention provides a fortified liquid extinguishing agent comprising a digesting component selected from water and an inorganic substance, a surfactant, a cryoprotectant, a corrosion inhibitor, and a fatty acid ester salt, and a process for producing the same. The reinforced liquid extinguishing agent according to the present invention is harmless to the human body and has environmental friendliness, has improved corrosion resistance and storage stability, and has excellent extinguishing performance.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a reinforced liquid extinguishing agent excellent in fire extinguishing performance and a method of manufacturing the same, and a method of manufacturing the same. BACKGROUND ART < RTI ID = 0.0 >

More particularly, the present invention relates to a fortified liquid extinguishing agent having excellent fire extinguishing performance and improved corrosion resistance and storage stability, and a method for producing the same.

Water is cheap and has no fear of deterioration and is most harmful to the human body and used as a fire extinguishing agent. In addition, water has a high specific heat and can absorb a large amount of heat, and has a large latent heat of evaporation, thereby absorbing a large amount of heat from the surroundings to cool the combustible, and the steam expansion coefficient is large. There are advantages.

In recent years, a strengthening liquid extinguishing agent having a fire extinguishing component for enhancing the fire extinguishing performance in water and a surfactant for improving the penetration of water by lowering the surface tension has been developed and used. Further, in the case of using only water alone, the pipe may be frozen and the pipe may be broken and corrosion may occur in the combustible material, and therefore, a cryoprotectant and a corrosion inhibitor are further added to prevent this.

For example, Korean Patent Registration No. 10-0700453, Korean Registration No. 10-1212022, Korean Registration No. 10-1335597, Korean Registration No. 10-1346190, Korean Patent Application No. 10-2011-0135482 , Japanese Unexamined Patent Publication No. 2000-042132, and Japanese Unexamined Patent Publication No. 2010-119754 disclose a reinforced liquid extinguishing agent related to the above.

In general, the extinguishing component is an inorganic substance (inorganic salt) such as potassium carbonate, potassium hydrogencarbonate, sodium carbonate, magnesium carbonate, Urea, ammonium sulfate, ammonium phosphate and sodium phosphate and the surfactant may be an anion, a cation And combinations of various surfactants such as non-ionic surfactants. As the above-mentioned cryoprotectant, glycols (such as ethylene glycol and propylene glycol) are mainly used, and silicate, phosphate and the like are mainly used as the above-mentioned corrosion inhibitor. In addition, most of the fortified liquid extinguishing agents have neutral or weakly alkaline liquors including a pH adjusting agent (citric acid, etc.).

However, prior art reinforced liquid extinguishing agents have a problem of sedimentation or layer separation during storage. This phenomenon becomes worse especially when stored for a long time at a high temperature, which is mainly caused by a corrosion inhibitor or the like. When precipitation or layer separation occurs, corrosion resistance and storage stability are deteriorated as well as the digestion performance deteriorates.

Korean Patent No. 10-0700453 Korean Patent No. 10-1212022 Korean Patent No. 10-1335597 Korean Patent No. 10-1346190 Korean Patent Publication No. 10-2011-0135482 Japanese Patent Laid-Open No. 2000-042132 Japanese Laid-Open Patent Application No. 2010-119754

Accordingly, it is an object of the present invention to provide an improved reinforced liquid extinguishing agent and a method of manufacturing the same. Specifically, the present invention provides an enhanced liquid extinguishing agent having excellent fire-extinguishing performance and improved corrosion resistance and storage stability, and a method for producing the same.

According to an aspect of the present invention,

water;

A digestive component selected from minerals;

Surfactants;

Antifreeze agents;

Corrosion inhibitors and

And a fatty acid ester salt.

The reinforced liquid extinguishing agent according to the present invention may further comprise a dispersing agent. At this time, the dispersant may include an ester compound having a hydroxyl group (-OH) and an ester group (COO-) in the molecule. Further, according to a preferred embodiment, the ester compound may include a compound represented by the following formula.

[Chemical Formula]

Wherein R ₁ and R ₂ are the same or different from each other and are hydrogen (H), an aliphatic hydrocarbon or an aromatic hydrocarbon, and n is 0 or an integer of 1 or more.

Further, according to the present invention,

A first step of obtaining a first solution in which water is mixed with a fire extinguishing component selected from an inorganic substance, a surfactant, a cryoprotectant and a corrosion inhibitor;

A second step of obtaining a second solution containing a fatty acid ester salt; And

And a third step of mixing the first solution and the second solution and then adding and mixing a pH adjusting agent.

INDUSTRIAL APPLICABILITY According to the present invention, it has an excellent fire extinguishing performance as well as a general fire as well as an oil fire, and has an effect of improving corrosion resistance and storage stability. Further, according to the present invention, since the liquid is neutral or weakly alkaline, it has an effect of preventing the human body from being harmed even in the event of fire, and eco-friendliness which does not adversely affect the soil.

As used herein, the term "and / or" is used to include at least one of the preceding and following elements. The term "one or more" as used in the present invention means one or more than two. Also, in the present invention, terms such as "first", "second" and "third" are used to distinguish one element from another, no.

According to a first aspect of the present invention, there is provided an enhanced liquid extinguishing agent excellent in extinguishing performance. According to a second aspect of the present invention, there is also provided a method for manufacturing an enhanced liquid extinguishing agent according to the present invention.

The fortified liquid extinguishing agent according to the present invention includes water, a fire extinguishing component, a surfactant, an antifreezing agent and a corrosion inhibitor, and further includes a fatty acid ester salt. The reinforced liquid extinguishing agent according to the present invention is a liquid composition containing the above-mentioned components, and has neutral or weakly alkaline liquidity. According to a preferred embodiment, the fortified liquid extinguishing agent according to the present invention may further comprise a dispersing agent. The dispersant preferably contains an ester compound having a hydroxyl group (-OH) and an ester group (COO-) in the molecule. Exemplary embodiments of constituent components of the reinforced liquid extinguishing agent (hereinafter abbreviated as "extinguishing agent") according to the present invention will be described as follows.

Water is a base component of an extinguishing agent, which in itself has the function of a medium to dissolve (disperse) other ingredients while having a digestive function. The water is not particularly limited, and includes purified and / or non-purified water. The water may be selected from tap water, ground water and / or distilled water.

The extinguishing component is selected from an inorganic substance having a digestive function, which can be selected from those conventionally used in the art. One or two or more kinds of minerals can be used as the extinguishing component, and it is sufficient that they can be uniformly mixed (dissolved) in water.

The extinguishing component may be an inorganic substance such as potassium carbonate, potassium bicarbonate, sodium carbonate, sodium bicarbonate, magnesium carbonate, ammonium carbonate, Urea, ammonium sulfate, ammonium dihydrogen phosphate, ammonium dihydrogen phosphate, , Potassium sulfate, calcium chloride, and oxidized boric acid, but is not limited thereto. The extinguishing component as such an inorganic substance (inorganic salt) works effectively together with water as an extinguishing agent.

The extinguishing component may be contained in an amount of, for example, 30 to 200 parts by weight based on 100 parts by weight of water. At this time, if the content of the extinguishing component is less than 30 parts by weight, the extinguishing performance may be insignificant depending on its use. If the content of the extinguishing component is more than 200 parts by weight, the corrosiveness to metal and the like may increase, and the pH may be increased to cause skin irritation or the like, and precipitates may be formed as the storage period elapses. Considering this point, the extinguishing component may be contained in an amount of 50 to 150 parts by weight based on 100 parts by weight of water.

The surfactant is used to lower the surface tension of the extinguishing agent. The surface tension is lowered by the addition of the surfactant, so that the permeability of the water and the extinguishing component can be increased and the foaming power can be improved. As a result, not only general fire (Class A fire) but also oil fire (Class B fire) easily permeates into the center of combustible materials and improves digestion performance. With the addition of such a surfactant, the extinguishing agent can have a surface tension of, for example, 33 dyne / cm or less, more specifically 15 to 30 dyne / cm.

The surfactant is not particularly limited as long as it can lower the surface tension. Surfactants may be selected from those conventionally used in the art, which may be selected from one or a combination of two or more selected from cationic, anionic, nonionic and amphoteric surfactants.

Specific examples of the surfactant include sodium lauryl sulfate, sodium laureth sulfate, disodium laureth sulfosuccinate, cocamidopropyl betaine, and the like. Specific examples of the surfactant include sodium lauryl sulfate, sodium laureth sulfate, disodium laureth sulfosuccinate, Propyl Betaine, Lauryl Dimethyl Amine Oxide, Cocamide MEA, Cocamide DEA, Laurylalcohol Ethoxylate, Polyoxyethylene Alkyl Sulfate A polyoxyethylene alkyl sulfate ester salt, and a polyoxyethylene alkylether triethanolamine. However, the present invention is not limited thereto.

According to an embodiment of the present invention, the surfactant may include a fluorine-based surfactant. Specifically, in the present invention, the surfactant may be composed of a fluorine-based surfactant, or may be a mixture of a fluorine-based surfactant and a general hydrocarbon-based surfactant as illustrated above. The fluorine-based surfactant has better chemical resistance than a general hydrocarbon surfactant, and this is particularly useful in the present invention because the surface tension of the extinguishing agent can be remarkably lowered.

According to a preferred embodiment of the present invention, the surfactant is preferably composed of a mixture of a fluorine-based surfactant and a hydrocarbon-based surfactant. In this case, the surface tension is remarkably lowered by the fluorine-based surfactant, and the bubble power is increased by the hydrocarbon-based surfactant, so that the digestion performance can be improved. The fluorine-containing surfactant may be selected from those containing at least one fluorine element (F) in the molecule and a water-soluble functional group bonded to the end in the hydrophobic linear chain molecule. The fluorine-based surfactant may be selected from, for example, perfluoroalkylcarboxylate-based surfactants and the like.

The surfactant may be contained in an amount of, for example, 2 to 50 parts by weight based on 100 parts by weight of water. At this time, when the content of the surfactant is less than 2 parts by weight, the effect of improving surface tension and / or foaming power upon use thereof may be insignificant. When the content of the surfactant is more than 50 parts by weight, for example, the solubility (dispersibility) of the surfactant may be lowered and suspension may be generated. Taking this into consideration, the surfactant may be included in an amount of 5 to 40 parts by weight based on 100 parts by weight of water. When the surfactant is composed of a mixture of the fluorine-based surfactant and the hydrocarbon-based surfactant as described above, it is preferable to use the fluorine-based surfactant and the hydrocarbon-based surfactant at a weight ratio of 1: 2 to 5. When such a mixture is used in a weight ratio, it may be effective in improving the surface tension, bubble strength, and the like.

The cryoprotectant is used to lower the freezing point of the extinguishing agent. By means of the cryoprotectant, for example, pipe breakage in winter can be prevented. The cryoprotectant is not particularly limited as long as it can lower the solidifying point of the extinguishing agent and can be selected from those conventionally used in the art. The anti-freezing agent should be capable of lowering the freezing point of the extinguishing agent to -20 캜 or lower.

The cryoprotectant may be selected from, for example, glycols. Specific examples of the cryoprotectant include ethylene glycol (EG), propylene glycol (PG), and the like. Preferably, a mixture of ethylene glycol (EG) and propylene glycol (PG) can be used. At this time, ethylene glycol (EG) and propylene glycol (PG) may be mixed in a weight ratio of 1: 0.2 to 5.

The cryoprotectant may be contained in an amount of, for example, 5 to 40 parts by weight based on 100 parts by weight of water. At this time, if the content of the cryoprotectant is less than 5 parts by weight, the antifreezing ability upon use thereof may be insignificant. When the content of the cryoprotectant is more than 40 parts by weight, the synergistic effect of the cryoprotectant is not so large, which may be undesirable from the economical point of view. Considering this point, the cryoprotectant may be contained in an amount of 8 to 30 parts by weight based on 100 parts by weight of water.

The corrosion inhibitor prevents corrosion of combustibles and surrounding mechanical articles by spraying the fire extinguishing agent, which is also used to prevent corrosion of the fire extinguishing container filled with the fire extinguishing agent. The corrosion inhibitor is not particularly limited as long as it has at least a corrosion inhibiting ability against the metal, and can be selected from those conventionally used in the art.

The corrosion inhibitor may be selected from, for example, silicate, phosphate, molybdic acid and / or triazole. Specific examples of the corrosion inhibitor include, but are not limited to, sodium silicate, ammonium silicate, ammonium phosphate, sodium molybdate, benzotriazole, and the like.

The corrosion inhibitor may be contained in an amount of, for example, 0.5 to 20 parts by weight based on 100 parts by weight of water. At this time, if the content of the corrosion inhibitor is less than 0.5 part by weight, the anticorrosive ability upon use thereof may be insignificant. If the content of the corrosion inhibitor is more than 20 parts by weight, the synergistic effect with excessive use is not so large, and precipitation or layer separation may occur. In view of this, the corrosion inhibitor may be included in an amount of 1 to 15 parts by weight based on 100 parts by weight of water.

The fire extinguishing agent according to the present invention contains, as a reinforcing component for enhancing the fire extinguishing performance, a fatty acid ester salt in addition to the above components. Specifically, the extinguishing agent according to the present invention comprises water as a first extinguishing agent and a digesting component (an inorganic substance) as a second extinguishing agent as an active ingredient for digestion, further comprising a fatty acid ester salt as a third extinguishing agent, It has fire extinguishing performance.

In the present invention, the fatty acid ester salt has at least one ester group (-COO) and a metal element in the molecule, and the fatty acid ester salt improves digestion performance. Specifically, the fatty acid ester salt acts effectively as at least a flame scavenger (flame retardant) to improve the digestion performance. In addition, the fatty acid ester salt has a function as an extinguishing agent and improves the dispersibility of the corrosion inhibitor and / or the inorganic substance to the extinguishing component (inorganic substance) and the like. As a result, the fatty acid ester salt prevents precipitation and separation of layers to provide excellent corrosion resistance and storage stability.

The fatty acid ester salt may have a chemical structure of, for example, R-COO-M. Here, R may be selected from, for example, an aliphatic hydrocarbon compound having a carbon number of C ₁ to C ₂₀ , and the M may be selected from metal elements such as Na, K, Ca, and Mg. Specific examples of the fatty acid ester salt may be selected from fatty acid metal salts of C ₁₀ to C ₂₀ carbon atoms, such as lauric acid metal salt, palmitic acid metal salt, stearic acid metal salt, oleic acid metal salt and / or linolenic acid metal salt.

The fatty acid ester salt may be selected from those which are water-soluble and / or water-insoluble, and preferably those which are water-soluble. At this time, the water-soluble fatty acid ester salt can be dissolved in water and mixed with the extinguishing agent, and the water-insoluble fatty acid ester salt can be dispersed in water and mixed with the extinguishing agent using an appropriate dispersing agent. Specific examples of the water-soluble fatty acid ester salt include a fatty acid sodium salt (R-COO-Na) and / or a fatty acid potassium salt (R-COO-K). Specific examples of the water-insoluble fatty acid ester salt include a fatty acid calcium salt (R-COO-Ca) and / or a fatty acid magnesium salt (R-COO-Mg). In addition, when the fatty acid ester salt is selected from the above-mentioned water-insoluble fatty acid ester salt (metal salt), it may be included in the extinguishing agent as fine particles. The water-insoluble fatty acid ester salt (metal salt) may have a particle size of, for example, 50 탆 or less, specifically 0.01 탆 to 50 탆, more specifically, for example, 0.1 탆 to 20 탆.

The fatty acid ester salt may be contained in an amount of, for example, 2 to 30 parts by weight based on 100 parts by weight of water. At this time, when the content of the fatty acid ester salt is too small as less than 2 parts by weight, the digestion performance improving effect (flame removing ability, etc.) may be insignificant depending on the use thereof. When the content of the fatty acid ester salt is more than 30 parts by weight, it is not economically preferable and uniform dissolution (dispersion) in the extinguishing agent may be difficult. Considering this point, the fatty acid ester salt may be contained in an amount of 5 to 20 parts by weight based on 100 parts by weight of water.

The extinguishing agent according to the present invention may further comprise a dispersing agent. The dispersant is used to disperse the above components, i.e., the digesting component (inorganic), the corrosion inhibitor and / or the fatty acid ester salt, which is used to disperse at least the fatty acid ester salt among the above components. For example, when water-insoluble fatty acid ester salts are used, they may have poor water dispersibility. The dispersing agent is added to uniformly disperse a uniform dispersion of the fatty acid ester salt, more specifically, the water-insoluble fatty acid ester salt. With such a dispersant, at least a fatty acid ester salt is uniformly dispersed in water to improve digestion performance and corrosion resistance, as well as to effectively prevent precipitation, layer separation, and the like, and to have excellent storage stability.

The dispersing agent may be selected from water-soluble ones, for example, amine-based compounds. As the dispersing agent, commercially available products, for example, BYK series products (BYK-154 and BYK-W940, etc.) of BYK in Germany can be used.

The dispersant may be included in an amount of, for example, 0.05 to 10 parts by weight based on 100 parts by weight of water. If the content of the dispersing agent is less than 0.05 part by weight, the dispersing ability of the dispersing agent may be insufficient. When the content of the dispersant is more than 10 parts by weight, the synergistic effect with excess use is not so great and it may not be economically preferable. Considering this point, the dispersant may be included in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of water.

According to an embodiment of the present invention, the dispersant preferably contains an ester compound. In the present invention, the ester compound is a compound having at least one hydroxyl group (-OH) and at least one ester group (COO-) in the molecule, and this makes it possible to effectively disperse the fatty acid ester salt to have excellent storage stability . Specifically, the ester compound specified in the present invention has water solubility by the hydroxyl group (-OH) and is mixed (dissolved) in water, and the ester group (COO-) has compatibility with the fatty acid ester salt It is possible to effectively disperse (dilute) the fatty acid ester salt to have excellent storage stability.

Further, according to a preferred embodiment of the present invention, it is preferable that the ester compound includes a compound represented by the following formula. Specifically, the ester compound as the dispersing agent may be a compound represented by the following formula or other ester compound having at least a compound represented by the following formula and having a hydroxyl group (-OH) and an ether group (COO-) May be composed of a further mixed mixture.

[Chemical Formula]

In the above formulas, R ₁ and R ₂ are not mutually dependent. That is, R ₁ and R ₂ are independently independent groups, which are composed of a single element or selected from hydrocarbon-based compounds. Specifically, in the above formula, R ₁ and R ₂ are the same or different from each other and are selected from hydrogen (H), an aliphatic hydrocarbon, or an aromatic hydrocarbon. When R ₁ and R ₂ are selected from, for example, aliphatic hydrocarbons, they may be saturated hydrocarbons or unsaturated hydrocarbons having one or more unsaturated groups (double bond groups and / or triple bond groups). Such R < ₁ > and R < ₂ > may have, for example, C ₁ to C ₂₀ carbon atoms. When R ₁ and R ₂ are aromatic hydrocarbons, they may contain one or two or more benzene rings.

In the above formula, n is 0 or an integer of 1 or more. In the above formula, the upper limit of n is not limited. n may be an integer within a range of, for example, 0 (zero) to 20 inclusive, and may be an integer within a range of 0 (zero) to 10, but is not limited thereto.

The compound represented by the above formula includes a hydroxyl group (-OH) and an ester group (COO-) to effectively disperse the fatty acid ester salt. In addition, the compounds of the above formula have high boiling points. Specifically, the compound of the above formula has a high boiling point due to the molecular weight of, for example, R ₁ and / or R ₂ , and is thermally stable, and therefore, excellent storage stability can be achieved even at a high temperature.

The ester compound as the dispersing agent is preferably contained in an amount of 2 to 25 parts by weight based on 100 parts by weight of the fatty acid ester salt. That is, the extinguishing agent according to the present invention comprises a fatty acid ester salt and an ester compound as a dispersant thereof, and it is preferable that the fatty acid ester salt and the ester compound are contained in a weight ratio of 100: 2 to 25. At this time, when the amount of the ester compound used is less than 2 parts by weight (weight ratio) based on 100 parts by weight of the fatty acid ester salt, the effect of improving the dispersion by the use of the ester compound may be insignificant. When the amount of the ester compound used is more than 25 parts by weight (weight ratio), the synergistic effect with excess use is not so great and it may not be economically preferable.

In addition, the ester compound may be contained in an amount of 0.5 to 15 parts by weight based on 100 parts by weight of the surfactant as described above. That is, it is preferable that the extinguishing agent according to the present invention comprises a surfactant and an ester compound, and the surfactant and the ester compound are contained at a weight ratio of 100: 0.5-15. At this time, when the amount of the ester compound used is less than 2 parts by weight (weight ratio), the effect of improving the dispersion by the use of the ester compound may be insignificant. When the amount of the ester compound used is more than 15 parts by weight (weight ratio) based on 100 parts by weight of the surfactant, the surfactant may adversely affect the surface tension, for example.

The fire extinguishing agent according to the present invention may further include additives in addition to the above-mentioned components. At this time, the additive may include at least a pH adjusting agent, and in addition to the pH adjusting agent, a digesting performance improving agent (accelerator), an antioxidant, and / or a color pigment may be included. Such additives may be selected from various ones as long as they do not impair the digestion performance.

The pH adjusting agent may be selected from, for example, organic acids, and specific examples thereof include at least one selected from citric acid, malonic acid, maleic acid, gluconic acid, tannic acid, oxalic acid, adipic acid, and salicylic acid. But is not limited thereto. By the addition of such a pH adjusting agent, the extinguishing agent according to the present invention can have a neutral or weakly alkaline liquor. The extinguishing agent according to the present invention may have a liquidity of, for example, pH 6.5 to 12, preferably pH 6.5 to 8. The amount of the pH adjusting agent may be adjusted to have the above-mentioned liquidity (pH range) depending on the kind and content of the extinguishing component (inorganic substance), for example, 0.01 to 10 parts by weight with respect to 100 parts by weight of water.

As described above, the fire extinguishing agent according to the present invention further comprises a fatty acid ester salt as a third fire extinguishing agent, including water, a fire extinguishing component (inorganic substance), a surfactant, a cryoprotectant and a corrosion inhibitor, But also fire extinguishing performance such as oil fire (B class fire). In addition, it has excellent storage stability as the corrosion resistance is improved. In addition, the liquid is neutral or weakly alkaline, and does not harm the human body even in the event of fire evolution, and does not adversely affect the soil, thereby promoting environment friendliness. The extinguishing agent according to the present invention can be used, for example, diluted in water.

Meanwhile, a method for producing an extinguishing agent according to the present invention comprises a first step of obtaining a first solution in which water is mixed with a digesting component (an inorganic substance), a surfactant, a cryoprotectant and a corrosion inhibitor, and a second step And a third step of mixing the first solution and the second solution and then adding and mixing a pH adjusting agent. After the mixing is completed through the third step, the fourth step may be completed by stabilizing the mixture for a predetermined period of time.

In the first step, the mixing order of the components in the mixing of the first solution is not limited. Preferably, the components are mixed and stirred into water while continuing the stirring. In the second step, the second solution may be an aqueous solution in which a water-soluble fatty acid ester salt is dissolved in water, or a dispersion in which a water-insoluble fatty acid ester salt is dispersed in water. In the case of a dispersion, the second solution may further comprise a dispersing agent, wherein the dispersing agent preferably contains at least the ester compound as described above. In addition, the second solution may contain, for example, 5 to 50% by weight of a fatty acid ester salt.

Hereinafter, examples and comparative examples of the present invention will be exemplified. The following examples are provided to illustrate the present invention in order to facilitate understanding of the present invention, and thus the technical scope of the present invention is not limited thereto. In addition, the following comparative example is not meant to be a prior art, but is provided for comparison with an embodiment only.

[Example 1]

Water was put into a container equipped with a stirrer, and three kinds of minerals (potassium carbonate, magnesium carbonate and calcium chloride) were slowly added as a digesting component and stirred until completely dissolved. Then, a surfactant (mixture of three kinds) An anticorrosive agent and an anticorrosive agent were further added and stirred (to prepare a stirring solution) until it became transparent.

Thereafter, a fatty acid ester salt solution was added to the stirring solution, and the mixture was stirred. After a proper amount of citric acid was finally added to adjust the pH to neutral (pH of about 7.0), stirring was stopped and the mixture was allowed to stand for 24 hours to stabilize. At this time, the fatty acid ester salt solution was an aqueous solution of 20 wt% in which fine particles of water-soluble fatty acid metal salt (sodium stearate) (average particle size of about 5 μm) were dissolved in water. The specific components and contents of the extinguishing agent according to the present embodiment are shown in Table 1 below. In the following Table 1, the content of each component is based on 100 parts by weight of water (total amount of water used).

[Example 2]

The procedure of Example 1 was repeated except that the fatty acid ester salt was water-insoluble. Specifically, in the same manner as in Example 1, except that a 20 wt% dispersion liquid in which fine particles of a water-insoluble fatty acid metal salt (calcium stearate) (average particle size of about 5 μm) was stirred and dispersed in water was used as a fatty acid ester salt solution Respectively. Specific components and contents of the extinguishing agent according to the present embodiment are shown in Table 1 below.

[Example 3]

The same procedure as in Example 2 was carried out except that a fatty acid ester salt solution to which a dispersant was further added was used. Specifically, the same procedure as in Example 2 (1) was conducted except that 20% by weight of a dispersion liquid in which fine particles of a water-insoluble fatty acid metal salt (calcium stearate) was stirred and dispersed in water as a fatty acid ester salt solution was further added thereto, . At this time, BYK-154 manufactured by BYK, Germany was used as a commercially available product. Specific components and contents of the extinguishing agent according to the present embodiment are shown in Table 1 below.

[Comparative Example 1]

The same procedure as in Example 1 was carried out except that no fatty acid ester salt was used. Specifically, an appropriate amount of citric acid was finally added to the stirring solution obtained in the same manner as in Example 1 to adjust the pH, followed by stopping the stirring and stabilizing for 24 hours. The specific components and contents of the extinguishing agent according to this Comparative Example are shown in Table 1 below.

          ≪ Ingredient and content of reinforcing liquid extinguishing agent, unit: part by weight > Remarks
water A1 A2 A3 B C D E1 E2 F1 Example 1
100 36 12 2 15 12 5 9 - - Example 2
100 36 12 2 15 12 5 - 9 - Example 3
100 36 12 2 15 12 5 - 9 0.5 Comparative Example 1
100 36 12 2 15 12 5 - - -
* A1 (digestion component): Potassium carbonate
* A2 (Extinguishing Ingredient): Magnesium carbonate
* A3 (digestive component): calcium chloride
* B (Surfactant): sodium lauryl sulfate, cocamidopropyl betaine, and
Lauryldimethylamine oxide in a weight ratio of 1: 1: 2
* C (cryoprotectant): Ethylene glycol and propylene glycol were mixed at a weight ratio of 1: 1
* D (Corrosion inhibitor): Sodium silicate
* E1 (fatty acid ester salt): Water-soluble stearate metal salt (sodium stearate)
* E2 (fatty acid ester salts): Water-insoluble stearate metal salt (calcium stearate)
* F1 (dispersant): manufactured by BYK-154, Germany (BYK-154)

The surface tension, settling amount, metal corrosion resistance and fire extinguishing performance of fire extinguishing agents according to the above Examples and Comparative Examples were evaluated according to the fire test standard . Further, with respect to the extinguishing agents according to each of the above Examples and Comparative Examples, the flame ignition test was carried out as follows. The above results are shown in Table 2 below.

<Surface tension>

It was measured at room temperature using a DUNUQUE surface tension tester in accordance with the fire test standard. The surface tension of the reinforced liquid extinguishing agent should be less than 33 dyne / cm.

<Amount of sediment>

Lubricant settling value was measured at room temperature according to the test method. The settling amount of the strengthening liquid extinguishing agent should satisfy 0.1 volume (vol.)% Or less.

<Metal Corrosion>

Corrosion resistance to steel and aluminum was measured according to fire test standards. After the impregnation for 21 days, the weight loss of each metal should be 3 mg / 20㎠ or less per day.

<Fire extinguishing performance>

Fire extinguishing test models for wood fire (Class A fire) and oil fire (Class B fire) were prepared and measured according to the fire test standards. In the case of wood fire (Class A fire) test, there should be no reappearance within one minute after completion of fire extinguishing agent release. In case of oil fire (B class fire) test, there should be no re-ignition within 1 minute after completion of fire extinguishing agent discharge.

<Flame ignition test>

The reinforced liquid extinguishing agent according to each of the above Examples and Comparative Examples was spray coated on a surface of a highly flammable styrofoam panel (produced by fusing polystyrene foamed beads in a panel shape), and then completely dried. Thereafter, the sample was placed in a sealable chamber, each specimen was ignited for about 10 seconds through an igniter (gas torch), and then the flame existence time (seconds) after removal of the igniter (gas torch) was measured.

&Lt; Evaluation results of physical properties and fire extinguishing performance of fire extinguishing agent > Remarks
Example 1 Example 2 Example 3 Comparative Example 1 Exterior
Transparency Transparency Transparency Transparency Surface tension
[dyne / cm] 22.4 22.6 21.8 24.7 Sedimentation amount
[vol.%] none 0.05 none 0.08 metal
causticity
[Mg / 20 cm 2] steel
0.08 0.11 0.06 1.51 aluminum
0.12 0.16 0.11 2.17
Fire Performance Wood fire
(Class A fire) After complete digestion,
No replay After complete digestion,
No replay After complete digestion,
No replay After complete digestion,
No replay Oil fire
(Class B fire) After complete digestion,
No re-ignition After complete digestion,
No re-ignition After complete digestion,
No re-ignition After complete digestion,
Re-ignition occurred Flame ignition
Test Flame Time
[second] Disappear with removal of the igniter Disappear with removal of the igniter Disappear with removal of the igniter 5 seconds

As shown in Table 2, in the case of the fire-extinguishing agent according to the examples, all items including the fatty acid ester salt have low surface tension and excellent fire extinguishing performance while satisfying the fire-fighting test standard. In addition, it can be seen that the fatty acid ester salt is advantageous for flame-removing ability.

 In comparison with Examples 1 and 2, the fatty acid ester salt was found to be the case where a water-soluble fatty acid metal salt (sodium stearate) (Example 1) was used in the case of using a water-insoluble fatty acid metal salt (calcium stearate) Surface tension, precipitation, and metal corrosion resistance. In contrast to Examples 2 and 3, it can be seen that the surface tension, precipitation, and metal corrosion resistance are improved when the water-insoluble fatty acid metal salt (calcium stearate) is dispersed through addition of a dispersant (Example 3).

[Examples 4 to 7]

The same procedure as in Example 3 was carried out except that the kind of dispersant was varied. Specifically, the same procedure as in Example 3 was conducted except that an ester compound (1-benzoxy-2-hydroxy-fatty acid ester) prepared according to the following <Preparation Example 1> was used as a dispersant, . The content of the dispersant (ester compound) was varied according to each of Examples (4 to 7). Specific ingredients and contents of the strengthening liquid extinguishing agent according to each of Examples (4 to 7) are shown in Table 3 below.

PREPARATION EXAMPLE 1: Preparation of ester compound (dispersant)

A clean 3 liter four-necked flask reactor was charged with 432 g of benzyl alcohol and 0.1 g of tripropylboron, and the mixture was stirred at room temperature for 10 minutes under nitrogen feeding. Thereafter, 372 g of epichlorohydrin was added dropwise to the reactor over 3 hours. During the dropwise addition, the cold-bottomed container was supported under the reactor so that the temperature did not exceed 40 DEG C, and the temperature was dropped while dropping. After completion of the dropwise addition, the reaction was maintained for 1 hour, then 500 g of sodium carbonate was added, and the temperature was raised to 120 DEG C over 2 hours.

Then, after the temperature was elevated, 1,200 g of soybean oil fatty acid was added dropwise to the reactor over 3 hours, and the temperature was raised to 150 캜 and the reaction was carried out for 5 hours. As the reaction progressed, carbon dioxide gas was generated. When the generation of carbon dioxide gas stopped, the reaction gas was cooled to about 80 ° C. After cooling, the salt layer was filtered out to obtain about 1,280 g of an ester compound (1-benzoxy-2-hydroxy-fatty acid ester) having both a hydroxyl group and an ester group in the molecule.

&Lt; Ingredient and content of reinforcing liquid extinguishing agent, unit: part by weight > Remarks
water A1 A2 A3 B C D E1 E2 F1 F2 Example 3
100 36 12 2 15 12 5 - 9 0.5 - Example 4
100 36 12 2 15 12 5 - 9 - 0.1 Example 5
100 36 12 2 15 12 5 - 9 - 0.5 Example 6
100 36 12 2 15 12 5 - 9 - 2 Example 7
100 38 12 2 15 12 5 - 9 - 2.5
* A1 (digestion component): Potassium carbonate
* A2 (Extinguishing Ingredient): Magnesium carbonate
* A3 (digestive component): calcium chloride
* B (Surfactant): sodium lauryl sulfate, cocamidopropyl betaine, and
Lauryldimethylamine oxide in a weight ratio of 1: 1: 2
* C (cryoprotectant): Ethylene glycol and propylene glycol were mixed at a weight ratio of 1: 1
* D (Corrosion inhibitor): Sodium silicate
* E1 (fatty acid ester salt): Water-soluble stearate metal salt (sodium stearate)
* E2 (fatty acid ester salts): Water-insoluble stearate metal salt (calcium stearate)
* F1 (dispersant): manufactured by BYK-154, Germany (BYK-154)
* F2 (dispersant): An ester compound having a hydroxy group (-OH) and an ester group (COO-) (Production Example 1)

The surface tension (dyne / cm) of the extinguishing agent according to each of Examples (4 to 7) was measured according to the fire test standard, and the results are shown in Table 4 below. The storage stability of the extinguishing agents according to each of Examples (4 to 7) was evaluated by the following method, and the results are shown in Table 4 below. In addition, the storage stability of the extinguishing agent according to Example 3 was evaluated in the same manner, and the results are shown in Table 4 below.

<Storage stability evaluation>

The fire extinguishing agent according to each of Examples (3 to 7) was put in a transparent glass container and stored for 10 days under a high temperature / high humidity condition at a relative humidity of 60% and a temperature of 80 캜, and then kept at a low temperature condition of 4 캜 for 5 days. Then, the sample was further stored for 5 days under a high temperature / high humidity condition at a relative humidity of 60% and a temperature of 80 ° C, and then the deposition of the extinguishing agent and the occurrence of layer separation according to Examples (3 to 7) were visually evaluated. At this time, evaluation was made according to the following evaluation criteria, and the results are shown in Table 4 below.

* Evaluation standard *

&Amp; cir &amp;: When no precipitation or layer separation occurs at all

○: When at least one of precipitation and layer separation occurred

Δ: When both precipitation and layer separation occurred

&Lt; Evaluation results of surface tension and storage stability of reinforced liquid extinguishing agent > Remarks
Example 3 Example 4 Example 5 Example 6 Example 7 Surface tension
[dyne / cm] 21.8 20.1 22.4 26.3 32.1 Storage stability
(High temperature / low temperature / high temperature) △ △ ○ ◎ ◎

As shown in Table 4, when an ester compound having a hydroxyl group (-OH) and an ester group (COO-) was used as a dispersant (Examples 4 to 7), long term storage under harsh conditions of high temperature / low temperature / It can be seen that there is no sedimentation or layer separation and that it has excellent storage stability.

In addition, the storage stability was improved as the content of the ester compound was increased in Examples 4 to 7. However, when the content of the ester compound is too low as in Example 4, the storage stability is somewhat lowered. When the content of the ester compound is too high as in Example 7, the surface tension of the extinguishing agent is increased.

Therefore, it is understood that the ester compound should be used in an appropriate amount in consideration of storage stability and surface tension. In other words, as shown in Table 4, in the present experimental examples, in consideration of storage stability, more than 0.1 part by weight based on 9 parts by weight of the fatty acid ester salt, 2.5 parts by weight based on 15 parts by weight of the surfactant, It was found that the storage stability and the surface tension were excellent in the case of using less than part.

Claims (6)

delete delete delete water;
A digestive component selected from minerals;
Surfactants;
Antifreeze agents;
Corrosion inhibitors;
Fatty acid ester salts; And
Dispersant,
The dispersant includes an ester compound having a hydroxyl group (-OH) and an ester group (COO-) in the molecule,
Wherein said ester compound comprises a compound represented by the following formula:
[Chemical Formula]

Wherein R ₁ and R ₂ are the same or different from each other and are hydrogen (H), an aliphatic hydrocarbon or an aromatic hydrocarbon, and n is 0 or an integer of 1 or more.
5. The method of claim 4,
The reinforcing liquid extinguishing agent may be,
The fatty acid ester salt and the ester compound in a weight ratio of 100: 2 to 25,
Wherein the surfactant and the ester compound are contained at a weight ratio of 100: 0.5 to 15.
A first step of obtaining a first solution in which water is mixed with a fire extinguishing component selected from an inorganic substance, a surfactant, a cryoprotectant and a corrosion inhibitor;
A second step of obtaining a second solution containing a fatty acid ester salt and a dispersant; And
And a third step of mixing the first solution and the second solution and then adding and mixing a pH adjusting agent,
The dispersant includes an ester compound having a hydroxyl group (-OH) and an ester group (COO-) in the molecule,
Wherein the ester compound comprises a compound represented by the following formula.
[Chemical Formula]

Wherein R ₁ and R ₂ are the same or different from each other and are hydrogen (H), an aliphatic hydrocarbon or an aromatic hydrocarbon, and n is 0 or an integer of 1 or more.