KR20200125204A - A paint with fire-extinguishing function for small space and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a fire-extinguishing paint for a small space and a method for preparing the same and, more particularly, to a fire-extinguishing paint for a small space capable of providing excellent painting properties while minimizing the disruption of fire-extinguishing capsules, and a method for preparing the same. Accordingly, the present invention provides a fire-extinguishing paint for a small space, which contains 20 to 65 parts by weight of fire-extinguishing capsules with a fire-extinguishing performance based on the total parts by weight of the fire-extinguishing paint containing polymer binders, and a method for preparing the same.

Description

A paint with fire-extinguishing function for small space and manufacturing method thereof}

The present invention relates to a fire extinguishing paint for small spaces and a method for manufacturing the same, and more particularly, by grafting a polymeric binder to the fire extinguishing capsule, minimizing the destruction of the fire extinguishing capsule and satisfying excellent coating properties, and It relates to a method of manufacturing the same.

Various fire extinguishing systems, such as gas fire extinguishing systems, powder fire extinguishing systems, and water fire extinguishing systems, are widely used in the event of a fire.

The fire extinguishing mechanism of the gas fire extinguishing system is mainly physical fire extinguishing by reducing the oxygen concentration at the place of fire, and the fire extinguishing mechanism of the powder fire extinguishing system extinguishes through physicochemical inhibition by contacting the powder sprayed with the flame by the action of pressurized gas. In addition, the fire extinguishing mechanism of the water-based fire extinguishing system suppresses and extinguishes fire through three actions such as cooling of water fog, suffocation, and blocking of heat radiation.

In particular, there is a growing need for a fire extinguishing paint that can play a role of extinguishing a fire in a small space such as an electric distribution board due to electrical synthesis. In other words, the fire extinguishing paint acts to extinguish a fire in response to the temperature.

For example, in the "paint composition having a fire extinguishing function and a sheet having a fire fighting function using the same" (Publication No.: 10-2018-0043570), when a fire occurs in a location close to the application site, the fire extinguishing performance is displayed within a short time, enabling active fire suppression. A coating composition and a sheet in the form of a film using the same have been presented.

However, there are still minor problems to sufficiently exhibit the physical properties of the coating film, and rather, there is a problem that the fire extinguishing performance is insufficient. In addition, since bromine-based or chlorine-based fire extinguishing agents are used, there are disadvantages in terms of environment.

Therefore, by focusing on the above-described problems, the fire extinguishing performance is given to enable active fire suppression in the event of a fire, and mechanical properties including strength are maintained, thereby preventing the fire from spreading in the event of a fire in a small space. It is the time when research on technology development for fire extinguishing paint is desperately required.

Korean Patent Application Publication No. 10-2018-0043570, published on April 30, 2018.

The present invention was invented to solve the above problems, and by grafting a polymeric binder to the digestive capsule, it provides a small space digestive paint and a method for manufacturing the same, which minimizes destruction of the digestive capsule and satisfies excellent coating properties. There is a purpose.

The present invention for achieving the above object, with respect to the total weight of the fire extinguishing paint containing a polymer binder, a fire extinguishing paint for small spaces, characterized in that it is formed including 20 to 65 parts by weight of a fire extinguishing capsule exhibiting fire extinguishing performance. Make it a technical point.

Preferably, the fire extinguishing paint is characterized in that when the temperature rises due to a fire in a small space, the fire extinguishing capsule bursts and the clean fire extinguishing agent starts to be released and completely extinguishes within 90 seconds from the point of temperature rise.

Preferably, the digestive capsule is a clean digestive agent having digestive performance; An inorganic reinforcing film made of silicon and surrounding the clean fire extinguishing agent; And a wall material that forms the surface of the digestive capsule by surrounding the inorganic reinforcing film, thereby minimizing destruction of the clean fire extinguishing agent.

Preferably, the clean fire extinguishing agent is perfluorobutane (C ₄ F ₁₀ ), chlorotetrafluoroethane (CHClFCF ₃ ), pentafluoroethane (CHF ₂ CF ₃ ), heptafluoropropane (CF ₃ CHFCF _{3 ).} ), trifluoromethane (CHF ₃ ), hexafluoropropane (CF ₃ CH ₂ CF ₃ ), trifluoroiodide (CF ₃ I) and dodecafluoro-2-methylpentane-3-one (CF ₃ CF ₂ C(O)CF(CF ₃ ) ₂ ) It is characterized in that any one or more.

Preferably, it is characterized in that it is formed by further comprising 5 to 25 parts by weight of a solvent, 8 to 17 parts by weight of a pigment, and 0.1 to 0.5 parts by weight of a dispersant.

The present invention for achieving the above object, a first step of forming a first mixture by stirring at a low speed 20 to 40 parts by weight of a polymer binder, 1 to 5 parts by weight of a solvent, and 0.1 to 0.5 parts by weight of a dispersant; A second step of forming a second mixture by stirring 8 to 17 parts by weight of a pigment in the first mixture by mill dispersion, and then adding 4 to 20 parts by weight of a solvent and stirring; And a third step of forming a fire extinguishing paint by adding 20 to 65 parts by weight of a fire extinguishing capsule to the second mixture under 35 to 40°C and stirring at a low speed to form a fire extinguishing paint. To

The fire extinguishing paint for small spaces and a method for manufacturing the same according to the present invention by the means for solving the above problems has the following effects.

First, because the fire extinguishing capsule is included in the fire extinguishing paint, when the temperature rises due to the occurrence of a fire in a small space, the fire extinguishing capsule bursts and the clean fire extinguishing agent begins to be released and is completely extinguished within 90 seconds from the point of temperature rise. It has excellent digestive performance.

Second, due to the dispersant in the fire extinguishing paint, the interfacial tension of the pigment, the solvent and the polymeric binder is adjusted to prevent re-aggregation of the pigment, so that not only the physical properties of the fire extinguishing paint are excellent, but also the storage properties are excellent.

1 is a digestive capsule according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The fire extinguishing paint of the present invention is formed by including 20 to 40 parts by weight of a polymer binder, 20 to 65 parts by weight of a fire extinguishing capsule, 5 to 25 parts by weight of a solvent, 8 to 17 parts by weight of a pigment, and 0.1 to 0.5 parts by weight of a dispersant. do.

In particular, the process of mixing digestive capsules is important because digestive capsules have a high risk of being destroyed by heat and strong shearing force generated during the manufacture of digestive paints, and the degradation of digestive performance due to such destruction increases. That is, if the fire extinguishing capsule is destroyed in the process of manufacturing the fire extinguishing paint, even if a fire occurs in a small space, the goal of complete fire extinguishing cannot be achieved.

With this importance, the first step (S10) of forming a first mixture by stirring at low speed by stirring at a low speed 20 to 40 parts by weight of a polymer binder, 1 to 5 parts by weight of a solvent, and 0.1 to 0.5 parts by weight of a dispersant, 8 to 17 parts by weight of a pigment in the first mixture. After stirring the part by mill dispersion, the second step (S20) of forming a second mixture by adding 4-20 parts by weight of the solvent and stirring, adding 20-65 parts by weight of digestive capsules to the second mixture under 35-40℃ Through the third step (S30) of forming a fire extinguishing paint by stirring, a fire extinguishing paint that prevents destruction of the fire extinguishing capsule is prepared.

First, the first step is a step of forming a first mixture by stirring at a low speed at 500 to 600 rpm at 20 to 40 parts by weight of a polymer binder, 1 to 5 parts by weight of a solvent, and 0.1 to 0.5 parts by weight of a dispersant. (S10)

Specifically, in the first step, in order to minimize damage to the digestive capsules, 20 to 40 parts by weight of a polymer binder, 1 to 5 parts by weight of a solvent, and 0.1 to 0.5 parts by weight of a dispersant are stirred at a low speed at 500 to 600 rpm to form a first mixture. .

For reference, in the first step, 0.40 to 0.85 parts by weight of the anti-filming agent may be additionally added.If the amount of the anti-filming agent is less than 0.40 parts by weight, it is difficult to prevent corrosion, since it is insufficient to make the coating of the fire extinguishing paint stable. If it exceeds 0.85 parts by weight, it is preferable to add it in the range of 0.40 to 0.85 parts by weight, since there is no excellent effect compared to the added amount.

At this time, if the mixture is stirred at less than 500 rpm, the mixing power of the solvent, the polymer binder, and the dispersant may be weakened and the mixing time may be prolonged.If the stirring exceeds 600 rpm, there is a risk of deteriorating the physical properties, so it is preferable to stir within the range of 500 to 600 rpm. Do.

Next, the second step is a step of forming a second mixture by stirring 8 to 17 parts by weight of the pigment in the first mixture by mill dispersion, and then adding 4 to 20 parts by weight of the solvent for uniform dispersion and stirring. (S20)

In the case of pigments, re-aggregation can be prevented only when the distance between the pigments is maintained at 200 Å or more. Accordingly, a dispersant for preventing aggregation through control of surface energy such as pigments is required.

In this way, 8 to 17 parts by weight of a pigment, 4 to 20 parts by weight of a solvent, 20 to 40 parts by weight of a polymer binder, and 0.1 to 0.5 parts by weight of a dispersant are mixed and the finished second mixture has a viscosity of 40 to 55 ku.

Finally, in the third step, 20 to 65 parts by weight of digestive capsules are added to the second mixture while the temperature of the second mixture, which has been raised by continued stirring, is lowered to 35 to 40°C, and the mixture is stirred at a low speed of 500 to 1,000 rpm. By doing this, it is a step to prevent destruction of digestive capsules. (S30)

The important point in the third step is that the digestive capsules must be added after lowering the temperature and stirring speed, and if agitated below 35℃ or below 500rpm, the temperature is too low and stirred at a low speed, so the digestive capsules in the digestive paint are stably mixed. There is a problem that cannot be achieved, and if it exceeds 40℃ or exceeds 1,000rpm, the digestive capsule may be destroyed in the process of stirring with too high temperature and high-speed stirring, so there is a problem that the digestive performance cannot be exhibited 100%. It is preferable to lower the temperature of the second mixture whose temperature is increased by stirring or mixing to 35 to 40°C, and then add 20 to 65 parts by weight of digestive capsules and stir at a low speed of 500 to 1,000 rpm to mix.

The viscosity of the fire extinguishing paint in which the digestive capsules are dispersed through the third step can be made to be 70-100ku, which has a higher viscosity compared to before the digestion capsules are added, which increases the viscosity as the stirring is continued.

The extinguishing paint manufactured through the above-described first step (S10), second step (S20), and third step (S30) is discharged by bursting the extinguishing capsule within a few seconds when the temperature increases due to the occurrence of fire in a small space. It starts to be completely extinguished within 90 seconds from the point of temperature rise.

However, each of the digestive capsules, pigments, solvents, polymeric binders and dispersants constituting the digestive paint will be described in more detail below.

The fire extinguishing capsule of the present invention is in the form of a capsule containing a clean fire extinguishing agent 100, and when the temperature rises due to the occurrence of a fire in a small space, the fire extinguishing capsule is self-explosed and discharged so as to completely extinguish.

1 is a digestive capsule according to a preferred embodiment of the present invention. Referring to Figure 1, the digestive capsule is a clean extinguishing agent 100, an inorganic reinforcing film 200 surrounding the external surface of the clean extinguishing agent 100, and a wall material 300 surrounding the external surface of the inorganic reinforcing film 200. By doing so, it can be seen that the clean fire extinguishing agent 100 is formed in a multi-layered structure that minimizes destruction.

First, the clean fire extinguishing agent 100 is a composition having fire extinguishing performance.

Clean fire extinguishing agents 100 include perfluorobutane (C ₄ F ₁₀ ), chlorotetrafluoroethane (CHClFCF ₃ ), pentafluoroethane (CHF ₂ CF ₃ ), heptafluoro Roperophan (CF ₃ CHFCF ₃ ), trifluoromethane (CHF ₃ ), hexafluoropropane (CF ₃ CH ₂ CF ₃ ), trifluoroiodide (CF ₃ I) and dodecafluoro-2-methyl Any one or more of pentane-3-one (CF ₃ CF ₂ C(O)CF(CF ₃ ) ₂ ) may be selectively used. For reference, the clean fire extinguishing agent 100 must be supported in the range of 60 to 95% to exhibit fire extinguishing performance.

Second, the inorganic reinforcing film 200 is made of silicon and surrounds the clean fire extinguishing agent 100.

The inorganic reinforcing film 200 is formed between the clean extinguishing agent 100 and the wall material 300 to help minimize or prevent destruction of the clean extinguishing agent 100.

If the inorganic reinforcing film 200 is not formed between the clean extinguishing agent 100 and the wall material 300, the inorganic reinforcing film 200 is important because it may cause damage to the extinguishing agent in the process of being manufactured with an extinguishing paint. I can say it makes sense.

Third, the wall material 300 is a configuration that forms the surface of the digestive capsule by surrounding the inorganic reinforcing film 200.

As the material of the wall material 300, any one or more of gelatin resin, melamine resin, and urethane resin may be selectively applied.

The clean fire extinguishing agent 100, the inorganic reinforcing film 200, and the wall material 300 can be divided into two types of a multi-layered structure of 50 to 100 μm and 200 to 600 μm. It is desirable to apply a digestive capsule having a size of 50-100㎛ to enable this.

If a digestive capsule having a size of 200 ~ 600㎛ is applied, the digestion capsule is too large to make it difficult to dispose of the digestive capsule, and the surface of the substrate to which the digestive paint is applied is not smooth.

For this reason, in the present invention, it is intended to apply a digestive capsule having a size of 50 to 100 μm. In particular, if the digestion capsule is less than 50 μm, the particles can be easily formed and spray coated, but the particles are too fine for the purpose. Scattering may occur to a place other than the location of the substrate. On the other hand, if the digestive capsule exceeds 100㎛, since the surface of the substrate cannot be seen smoothly during spray coating, the size of the digestive capsule must be in the range of 50-100㎛, which has a critical meaning.

In addition, the content of digestive capsules may be included in the range of 20 to 65 parts by weight, and if it is less than 20 parts by weight, the target for digestion performance is not satisfied, and if it exceeds 65 parts by weight, it has a more excellent effect than that containing the amount less than that. Not only does not appear, and the surface of the coating film is not smooth, so it is preferable that the digestive capsule is contained in an amount of 20 to 65 parts by weight.

The pigment of the present invention imparts color to the fire extinguishing paint, and is composed of at least one of inorganic and organic pigments.

Inorganic pigments include compounds such as zinc, titanium, lead, iron, sulfur, copper, and chromium (oxides, hydroxides, sulfates, chromates, phosphates, etc.). For example, first, barium sulfate, precipitated barium sulfate, calcium carbonate, precipitated calcium carbonate, clay, talc powder, quartzite powder, diatomaceous earth, silica, bentonite as extender pigments, and second, titanium dioxide and zincated as white pigments. , Lithopon, Lead white, and antimony oxide. Third, red pigments include iron, Red Lead, Vermillion, Cadmium Vermillion, molybdenum red, and nitrous oxide. Fourth, as blue pigments, photosensitive, ultramarine, and cobalt blue Fifth, green pigments include chromium rust, chromium oxide rust, hydrated chromium oxide, and zinc rust. Sixth, as purple pigments, there are Manganese Violet, Mineal Violet, and Cobalt violet Depp.

Organic pigments are mostly made of dyes in the form of metal compounds that are insoluble in water, and dyestuffs that do not dissolve in water (pigment dye stuff). For example, first, Hansa yellow, Benzidine yellow, and Permanent yellow HR as yellow pigments, second, Toludine Red, Lake Red, Watching Red, Qnacridone Red as red pigments, third, Cu-Phthalocyanine Blue as blue pigments, and fourth, There is Cu-Phthalocyanine Gree as a green pigment.

As described above, among various kinds of inorganic and organic pigments, it may be used alone or in combination with one or more pigments according to the physical properties or desired color of the fire extinguishing paint.

In addition, pigments are preferably included in the range of 8 to 17 parts by weight.If less than 8 parts by weight, the degree of transparency of the fire extinguishing paint remains, so even if the surface of the substrate is applied, the state of the substrate surface can be seen, and exceeds 17 parts by weight. This is because the mixing power in the digestive paint is not good.

In particular, the distance between the pigments should be kept at least 200Å, the reason is to prevent agglomeration between the pigments to prevent re-aggregation.

The solvent of the present invention is configured to allow the pigment and polymer binder in the fire extinguishing paint to be easily dispersed by a dispersant.

It is good to add such a solvent in the range of 5 to 25 parts by weight depending on the physical properties of the fire extinguishing paint.If it is mixed with less than 5 parts by weight, the workability of the fire extinguishing paint applied to the surface of the substrate is poor, and if it exceeds 25 parts by weight, the solvent Since it is added in an excessively large amount and may cause a decrease in physical properties such as thickness and hardness of the coating film, it is preferable to appropriately adjust within the range of 5 to 25 parts by weight.

In the case of a solvent, it is preferable to use an organic solvent when the polymeric binder is oil-based (eg, acrylic resin), and use water when the polymeric binder is an aqueous system (eg, water dispersion-polyurethane). .

However, the solvent is not limited as long as it can be used in the fire extinguishing paint.

The polymeric binder of the present invention is a configuration for achieving excellent coating film properties by uniformly dispersing the digestive capsules and exerting adhesion to the substrate to which the digestive paint is applied.

In other words, the polymeric binder acts to stably satisfy physical properties such as thickness and hardness of the coating film by exerting adhesive force while the fire extinguishing paint is applied to the surface of the substrate.

At this time, the polymeric binder may be mixed in the range of 20 to 40 parts by weight, and if it is less than 20 parts by weight, it is not only insufficient to uniformly disperse the digestive capsules in the fire extinguishing paint, but also an insufficient amount to exhibit adhesion to the substrate, If it exceeds 40 parts by weight, it is possible to improve the adhesion of the fire extinguishing paint to the substrate, but the coating film may be rather thick, which is not good for the coating film properties.

In addition, as a polymer binder, any one that can be used as a polymer binder can be applied, but among them, any one or more of acrylic resin, urethane resin, silicone resin, polyvinyl resin, epoxy resin, and phenol resin that can be processed into liquid is selected. Can be applied.

However, depending on the characteristics of the substrate to which the fire extinguishing paint is applied (for example, wood, iron, non-ferrous metal, glass, etc.), the above-described polymer binder may be used alone or in combination of any one or more, and must be the type of the polymer binder described above. It is not limited to, and any polymeric binder that can be processed into a liquid state can be applied.

For example, an oil-based polymer binder and an aqueous-based polymer binder may be selectively used. Acrylic resin may be applied as the oil-based polymer binder, and water dispersion-polyurethane may be applied as the aqueous polymer binder.

The dispersant of the present invention is a composition that reduces dispersing time, prevents re-aggregation of the pigment, and improves the storage properties of the fire extinguishing paint by controlling the interfacial tension of the pigment, solvent, and the like in the fire extinguishing paint.

In other words, the dispersant increases the thixotropy of the fire extinguishing paint and provides an anti sagging effect and an effect of preventing the sedimentation of pigments and solvents.

Here, dispersants can be broadly classified into high-molecular wetting and dispersing agents (polyurethane-based), deagglomerated/polymer-based wetting and dispersing agents (polyacrylic, polyamino-based), and low-molecular wetting and dispersing agents (fatty acids, phosphate esters), etc., pigments And it may be used alone or in combination of any one or more depending on the characteristics of the polymeric binder. For reference, when dispersing solid particles in a liquid such as an extinguishing paint, the dispersant is preferably selected in consideration of the phenomena of wetting, grinding, and dispersion stabilization as a dispersion process.

These dispersants are preferably included in the range of 0.1 to 0.5 parts by weight, and if it is less than 0.1 parts by weight, it is not only insignificant to prevent reaggregation of the pigment, and improvement in dispersibility cannot be expected, and if it exceeds 0.5 parts by weight, an excessive amount of the dispersant For this reason, it is preferable to use it by appropriately controlling it within the range of 0.1 to 0.5 parts by weight because it causes the physical properties of the fire extinguishing paint to decrease.

Hereinafter, various experiments were performed through Examples and Comparative Examples of the fire extinguishing paint for small spaces of the present invention and a method of manufacturing the same, which will be described in more detail below.

<Example 1>

35.82 parts by weight of an oil-based polymeric binder acrylic resin, 3.58 parts by weight of an organic solvent, 0.72 parts by weight of an anti-filming agent, and 0.36 parts by weight of a dispersant A were stirred at a low speed, then 14.33 parts by weight of titanium dioxide was stirred by mill dispersion, and 12.97 parts by weight of an organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., and 32.23 parts by weight of digestive capsules were added and stirred at low speed to prepare a fire extinguishing paint.

<Example 2>

35.82 parts by weight of an oil-based polymeric binder acrylic resin, 3.58 parts by weight of an organic solvent, 0.72 parts by weight of an anti-filming agent, and 0.36 parts by weight of a dispersant B were stirred at a low speed, then 14.33 parts by weight of titanium dioxide was stirred by mill dispersion, and 12.97 parts by weight of an organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., and 32.23 parts by weight of digestive capsules were added and stirred at low speed to prepare a fire extinguishing paint.

<Example 3>

35.82 parts by weight of an oil-based polymeric binder acrylic resin, 3.58 parts by weight of an organic solvent, 0.72 parts by weight of an anti-filming agent, and 0.36 parts by weight of a dispersant C were stirred at a low speed, then 14.33 parts by weight of titanium dioxide was stirred by mill dispersion, and 12.97 parts by weight of an organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., and 32.23 parts by weight of digestive capsules were added and stirred at low speed to prepare a fire extinguishing paint.

<Example 4>

30.85 parts by weight of an oil-based polymer binder acrylic resin, 3.08 parts by weight of an organic solvent, 0.62 parts by weight of an anti-filming agent, and 0.31 parts by weight of a dispersant A were stirred at a low speed, and then 12.34 parts by weight of titanium dioxide was stirred by mill dispersion, and 11.17 parts by weight of an organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., 41.64 parts by weight of digestive capsules were added, and the mixture was stirred at low speed to prepare a fire extinguishing paint.

<Example 5>

25.05 parts by weight of an oil-based polymeric binder acrylic resin, 2.51 parts by weight of an organic solvent, 0.50 parts by weight of an anti-filming agent, and 0.25 parts by weight of a dispersant A were stirred at a low speed, and then 10.02 parts by weight of titanium dioxide was stirred by mill dispersion, and 9.07 parts by weight of the organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., 52.61 parts by weight of digestive capsules were added, followed by low-speed stirring to prepare a fire extinguishing paint.

<Example 6>

40.13 parts by weight of an oil-based polymeric binder acrylic resin, 4.01 parts by weight of an organic solvent, 0.80 parts by weight of an anti-filming agent, and 0.40 parts by weight of a dispersant A were stirred at a low speed, and then 16.05 parts by weight of titanium dioxide was stirred by mill dispersion, and 14.53 parts by weight of an organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., 24.08 parts by weight of digestive capsules were added, and agitated at low speed to prepare a fire extinguishing paint.

<Example 7>

21.78 parts by weight of an oil-based polymer binder acrylic resin, 2.18 parts by weight of organic solvent, 0.44 parts by weight of anti-filming agent and 0.22 parts by weight of dispersant A were stirred at a low speed, 8.71 parts by weight of titanium dioxide was stirred by mill dispersion, and 7.88 parts by weight of organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., and 58.80 parts by weight of digestive capsules were added and stirred at low speed to prepare a fire extinguishing paint.

<Example 8>

42.28 parts by weight of acrylic resin which is an oil-based polymer binder, 4.23 parts by weight of organic solvent, 0.85 parts by weight of anti-filming agent and 0.43 parts by weight of dispersant A were stirred at a low speed, and then 16.91 parts by weight of titanium dioxide was stirred by mill dispersion, and 15.30 parts by weight of organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., and 20.00 parts by weight of digestive capsules were added and stirred at a low speed to prepare a fire extinguishing paint.

The composition components constituting the fire extinguishing paints according to Examples 1 to 8 described above were summarized as shown in Table 1 below.

division material Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 One Acrylic resin 35.82 35.82 35.82 30.85 25.05 40.13 21.78 42.28 2 Organic solvent 3.58 3.58 3.58 3.08 2.51 4.01 2.18 4.23 3 Film inhibitor 0.72 0.72 0.72 0.62 0.50 0.80 0.44 0.85 4 Dispersant A 0.36 - - 0.31 0.25 0.40 0.22 0.43 Dispersant B - 0.36 - - - - - - Dispersant C - - 0.36 - - - - - 5 Titanium dioxide 14.33 14.33 14.33 12.34 10.02 16.05 8.71 16.91 6 Organic solvent 12.97 12.97 12.97 11.17 9.07 14.53 7.88 15.30 7 Digestive capsule 32.23 32.23 32.23 41.64 52.61 24.08 58.80 20.00 Sum 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 Unit: parts by weight

Storage test

As a result of conducting an experiment on whether Examples 1 to 3 in which the types of dispersants were different among the fire extinguishing paints according to Table 1 were stable for one week at 60°C, the deaggregation type/polymer type was more than that of Examples 2 and 3 The storage properties of Example 1 to which the dispersant A, which is a wetting and dispersing agent (polyacrylic, polyamino), was applied was the best.

Unlike the dispersant B and the dispersant C, this dispersant A has good compatibility with acrylic resin and deaggregates the pigment through steric hindrance to prevent color separation that may occur when pigment is mixed. It was found to increase gloss, tinting power and hiding power.

Next, in Examples 1 to 8, an oil-based acrylic resin was used as the polymer binder, whereas in Examples 9 to 11, an aqueous dispersion-polyurethane was used as the polymer binder.

<Example 9>

Aqueous polymer binder, water dispersion-polyurethane 35.82 parts by weight, water 4.20 parts by weight, and 0.36 parts by weight of dispersant were stirred at a low speed, then 14.33 parts by weight of titanium dioxide was stirred by mill dispersion, and then 13.06 parts by weight of water was stirred, and then raised The temperature was lowered to 35-40° C., and 32.23 parts by weight of digestive capsules were added and stirred at low speed to prepare a fire extinguishing paint.

<Example 10>

Aqueous polymer binder water dispersion-polyurethane 30.85 parts by weight, water 3.31 parts by weight, and 0.36 parts by weight of dispersant were stirred at a low speed, then 12.34 parts by weight of titanium dioxide was stirred by mill dispersion, and 11.50 parts by weight of water was stirred again, and then raised The temperature was lowered to 35-40° C., 41.64 parts by weight of digestive capsules were added, and the mixture was stirred at low speed to prepare a fire extinguishing paint.

<Example 11>

Aqueous polymer binder, water dispersion-polyurethane 25.05 parts by weight, water 2.96 parts by weight, and 0.36 parts by weight of a dispersant were stirred at a low speed, then 10.02 parts by weight of titanium dioxide was stirred by mill dispersion, and 9.00 parts by weight of water was stirred again, and then raised. The temperature was lowered to 35 to 40° C., 52.61 parts by weight of digestive capsules were added, and the mixture was stirred at low speed to prepare a fire extinguishing paint.

The composition components constituting the fire extinguishing paint according to Examples 9 to 11 described above were summarized as shown in Table 2 below.

division material Example 9 Example 10 Example 11 One Water dispersion-polyurethane 35.82 30.85 25.05 2 water 4.20 3.31 2.96 3 Dispersant 0.36 0.36 0.36 4 Titanium dioxide 14.33 12.34 10.02 5 water 13.06 11.50 9.00 6 Digestive capsule 32.23 41.64 52.61 Sum 100.00 100.00 100.00 Unit: parts by weight

On the other hand, unlike Examples 1 to 11, a fire extinguishing paint was prepared by adjusting the amount so as to deviate from the range of the preferred parts by weight of the pigment and the digestive capsule.

<Comparative Example 1>

After stirring at low speed, stirring at 44.93 parts by weight of acrylic resin, 4.50 parts by weight of organic solvent, 0.90 parts by weight of anti-filming agent, and 0.45 parts by weight of dispersant A, an oil-based polymer binder, 17.97 parts by weight of titanium dioxide was stirred by mill dispersion, and 16.25 parts by weight of organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., 15.00 parts by weight of digestive capsules were added and stirred at low speed to prepare a fire extinguishing paint.

<Comparative Example 2>

18.11 parts by weight of an oil-based polymeric binder acrylic resin, 1.81 parts by weight of an organic solvent, 0.37 parts by weight of an anti-filming agent, and 0.18 parts by weight of a dispersant A were stirred at a low speed, then 7.25 parts by weight of titanium dioxide was stirred by mill dispersion, and 6.56 parts by weight of an organic solvent was stirred. Then, the elevated temperature was lowered to 35-40° C., 65.72 parts by weight of digestive capsules were added, and the mixture was stirred at low speed to prepare a fire extinguishing paint.

The composition components constituting the fire extinguishing paint according to Comparative Examples 1 and 2 described above were summarized as shown in Table 3 below.

division material Comparative Example 1 Comparative Example 2 One Acrylic resin 44.93 18.11 2 Organic solvent 4.50 1.81 3 Film inhibitor 0.90 0.37 4 Dispersant A 0.45 0.18 Dispersant B - - Dispersant C - - 5 Titanium dioxide 17.97 7.25 6 Organic solvent 16.25 6.56 7 Digestive capsule 15.00 65.72 Sum 100.00 100.00 Unit: parts by weight

Film properties and fire extinguishing time test

The appearance of the coating film formed by air spray coating the fire extinguishing paints according to Examples 1 to 11 and Comparative Examples 1 and 2 described above on a CR steel plate, and the fire extinguishing time according to the test was conducted.

division Example
One Example
2 Example
3 Example
4 Example
5 Example
6 Example
7 Example
8 Example
9 Example
10 Example
11 stamp
Condition CR steel plate, Air Spray Coating Coating
thickness 400~500㎛ Coating
Exterior Good Good Good Good Good Good Good Good Good Good Good digestion
time 58 seconds 57 seconds 58 seconds 41 seconds 22 seconds 90 seconds 20 seconds 130 seconds 56 seconds 39 seconds 21 seconds

division Comparative Example 1 Comparative Example 2 stamp
Condition CR steel plate, Air Spray Coating Coating
thickness 400~500㎛ Coating
Exterior Good Bad digestion
time ×
(Not extinguished) 18 seconds

Table 4 shows the appearance of the coating film formed by air spray coating the fire extinguishing paint for Examples 1 to 11 on a CR steel plate, and the result of the test of the fire extinguishing time, and Table 5 shows the fire extinguishing paint for Comparative Examples 1 and 2. It shows the result of the experiment of the appearance of the coating film formed by air spray coating on the CR steel plate and the extinguishing time accordingly.

Regarding the coating film appearance, referring to Tables 4 and 5, the coating film appearance according to Examples 1 to 11 and Comparative Example 1 was generally good under the condition of the coating film thickness of 400 to 500 μm, but the coating film appearance of Comparative Example 2 was It was confirmed that the appearance of the fire extinguishing paint was poor because the pigment titanium dioxide was contained too small, and cracks occurred in the coating film.

Regarding the extinguishing time, in Examples 1 to 7, 9 to 11, and Comparative Example 2, the time required to extinguish was mostly completely extinguished within 90 seconds. However, in the case of Comparative Example 1, it was confirmed that a phenomenon in which digestion was not possible due to insufficient content of digestive capsules in the digestive paint. In the case of Comparative Example 2, it was confirmed that digestion was carried out within a very short time as the digestion time was 18 seconds because 65.72 parts by weight of the digestive capsule was included. However, as described above, the pigment titanium dioxide was contained too small, and the appearance of the digestive paint was reduced. It was not possible to make fire extinguishing paint because it was poor and cracks occurred in the coating film.

In summary, in Comparative Example 1, the amount of digestive capsules contained in the digestive paint was small, so that digestion was not possible, and in Comparative Example 2, the amount of digestive capsules contained in the digestive paint was large, and the digestion time was as shown in Examples 1 to 11. Although it took less than that, it means that the amount of titanium dioxide, which is a pigment, is small, and the appearance of the coating film is poor.

Physical property experiment

Among Examples 1 to 11, the physical properties of the prototype of Example 4 are shown in Table 6 below.

Item Result unit Test standard Adherence 5B - ASTM D 3359 Weather resistance 6.4 △E ASTM G 154 Cycle 1 Impact resistance clear - ASTM G14-04 Flexibility resistance clear - ASTM D522 Viscosity 100 KU KS M 5000 Non-volatile matter 57.2 % KS M ISO 3251 Digestion range 0.46~0.53 kg/m ³ Fire Safety Standard No. 182 Digestion performance 23~36 sec Fire Safety Standard No. 182 Combustion test V-0 - Fire Safety Standard No. 182

According to this Table 6, it shows the physical properties of the fire extinguishing paint prototype prepared with the components of Example 4, adhesion, weather resistance, impact resistance, bending resistance, viscosity, non-volatile content, extinguishing range, extinguishing performance and all in the combustion test It was confirmed that the result was satisfactory.

Extinguishing performance reproducibility experiment

Extinguishing performance reproducibility test on whether the extinguishing paint prepared in Example 4 containing a one-pack acrylic resin among oil-based polymer binders and containing a dispersant A having the best storage ability is not extinguished and regenerated within 90 seconds after pre-burning Was tried, and it is shown in Table 7 below.

Experiment item standard Fire extinguishing time test result (sec) One 2 3 4 5 6 Example 4 After preliminary combustion
Digest within 90 seconds and not recur
(Test conditions: 20±3℃) 40 41 38 40 36 39

As shown in Table 7, as a result of testing the reproducibility of extinguishing performance through Example 4, it was confirmed that the extinguishing paint made of Example 4 was completely digested within 90 seconds after the end of the preliminary combustion and did not regenerate, so that the extinguishing performance reproducibility was satisfied. Could

According to the present invention, since the fire extinguishing capsule is included in the fire extinguishing paint, when the temperature rises due to the occurrence of a fire in a small space, the fire extinguishing capsule begins to burst and release, and is completely extinguished within 90 seconds from the point of temperature rise, It has excellent digestive performance. In addition, the interfacial tension of the pigment, the solvent and the polymeric binder is adjusted due to the dispersant in the extinguishing paint to prevent re-aggregation of the pigment, so that not only the physical properties of the extinguishing paint are excellent, but also the storage properties are excellent.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: clean fire extinguishing agent
200: inorganic reinforcement membrane
300: wall material

Claims (6)

Based on the total weight of the fire extinguishing paint containing a polymeric binder,
Extinguishing paint for small spaces, characterized in that it is formed including 20 to 65 parts by weight of digestive capsules that exhibit digestive performance. The method of claim 1,
The fire extinguishing paint,
Fire extinguishing paint for small spaces, characterized in that when the temperature rises due to a fire in the small space, the fire extinguishing capsule bursts and the clean fire extinguishing agent starts to be released, and completely extinguishes within 90 seconds from the temperature rise. The method of claim 1,
The digestive capsule,
A clean fire extinguishing agent having fire extinguishing performance;
An inorganic reinforcing film made of silicon and surrounding the clean fire extinguishing agent; And
A fire extinguishing paint for small spaces, characterized in that it minimizes destruction of the clean fire extinguishing agent by being formed in a multi-layered structure including a wall material that surrounds the inorganic reinforcing film and forms the surface of the fire extinguishing capsule. The method of claim 3,
The clean fire extinguishing agent,
Perfluorobutane (C ₄ F ₁₀ ), chlorotetrafluoroethane (CHClFCF ₃ ), pentafluoroethane (CHF ₂ CF ₃ ), heptafluoropropane (CF ₃ CHFCF ₃ ), trifluoromethane (CHF ₃ ), hexafluoropropane (CF ₃ CH ₂ CF ₃ ), trifluoroiodide (CF ₃ I) and dodecafluoro-2-methylpentane-3-one (CF ₃ CF ₂ C(O)CF( CF ₃ ) ₂ ) fire extinguishing paint for small spaces, characterized in that any one or more. The method of claim 1,
5 to 25 parts by weight of a solvent, 8 to 17 parts by weight of a pigment, and 0.1 to 0.5 parts by weight of a dispersant. A first step of forming a first mixture by low-speed stirring of 20 to 40 parts by weight of a polymer binder, 1 to 5 parts by weight of a solvent, and 0.1 to 0.5 parts by weight of a dispersant;
A second step of forming a second mixture by stirring 8 to 17 parts by weight of a pigment in the first mixture by mill dispersion, and then adding 4 to 20 parts by weight of a solvent and stirring; And
A third step of forming a fire extinguishing paint by adding 20 to 65 parts by weight of fire extinguishing capsules to the second mixture under 35 to 40°C and stirring at a low speed to form a fire extinguishing paint.

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