KR102454340B1 - Internal water paint conposition for heat shield, insulation coating and initial fire extinguishing - Google Patents

Abstract

The present invention provides a water-based paint composition that can suppress fires in an early stage while having excellent insulation properties, including three kinds of hollow ceramic particles having different average particle diameters, an anti-rust acrylic emulsion, and micro fire extinguishing capsules for early fire extinguishing. The present invention has the effect of minimizing the damage of fire.

Description

INTERNAL WATER PAINT CONPOSITION FOR HEAT SHIELD, INSULATION COATING AND INITIAL FIRE EXTINGUISHING}

The present invention relates to a water-based paint composition capable of suppressing fire at an early stage while having excellent thermal insulation properties, including three types of hollow ceramic particles having different average particle diameters, a rust preventive acrylic emulsion, and a micro extinguishing capsule for initial fire extinguishing. .

To date, various projects have been established to establish measures to simultaneously solve the objectives of measures to prevent environmental pollution due to the use of fossil fuels and measures to reduce energy due to finite resources. In order to reduce and provide a pleasant and comfortable environment, a coating agent or a heat-blocking film provided with such a means of controlling heat energy for a building or vehicle is widely used.

Sunlight, a kind of electromagnetic wave, is absorbed by the surface of the object to generate thermal energy by inducing vibration of molecules. Therefore, it is necessary to block the transfer of thermal energy by infrared rays absorbed without the object to be reflected or reflected in advance to the inside of the object to be coated.

Although energy-saving paint products through such a thermal insulation effect are being released on the market, sufficient thermal insulation effect does not occur.

In addition, since the adhesiveness of the paint for insulation to the object is not sufficient, it may be separated from the object, resulting in a sharp decrease in reliability and durability. This may increase the thickness of the overall coating layer. In addition, since the types of the undercoat layer and the middle layer are different for each object to be coated, and the background treatment of the object to be coated is difficult, the overall construction cost and time increase, resulting in poor economic feasibility, and professional workers and specialized equipment may be required.

In this regard, Korean Patent Registration No. 10-1561567 describes a thermal barrier coating composition comprising ultrafine silica particles, rutile titanium dioxide, calcium carbonate, a resin binder, and water, but the thermal insulation performance may be low, and the adhesiveness may be low. There may be a problem.

Therefore, the development of an insulation composition to solve the above problems has been required, and additionally, when a fire occurs in a general building, if the fire cannot be extinguished in the initial stage, the fire spreads at an uncontrollable speed. Therefore, a paint composition capable of minimizing the damage of a fire by preventing the spread of fire and re-combustion was required.

An object of the present invention is to provide a paint composition to be painted on the inside of a building, thereby reducing the energy of the cooling load by blocking solar radiation to the room in summer, and blocking the convection heat of indoor heating from leaking to the outside in winter, This is to reduce the energy of the heating load by blocking the inflow of the cold outside temperature into the room.

In addition, it is to provide an eco-friendly water-based paint composition that can minimize the damage of a fire by extinguishing the fire at an early stage and preventing the spread of fire and re-combustion.

In order to achieve the above object, an embodiment of the present invention provides three types of hollow ceramic particles having different average particle diameters; anti-rust acrylic emulsion; and initial fire extinguishing microcapsules that are self-temperature sensitive at a temperature of 120 to 220° C., wherein the hollow ceramic particles have a first hollow ceramic particle having an average particle diameter of 10 to 20 μm, and a first hollow ceramic particle having an average particle diameter of 20 to 30 μm. To provide an internal water-based coating composition for heat insulation and initial fire extinguishing, comprising two hollow ceramic particles and a third hollow ceramic particle having an average particle diameter of 30 to 60 μm.

As another embodiment of the present invention, based on the total weight of the water-based paint composition in the internal water-based paint composition for heat insulation and initial fire extinguishing, the content of the anti-rust acrylic emulsion is 30 to 40% by weight, and the three types of hollow The total content of the type ceramic particles may be 25 to 35% by weight, and the content of the microcapsules for digestion may be 5 to 15% by weight.

In another embodiment of the present invention, in the internal aqueous coating composition for heat insulation and initial fire extinguishing, the three kinds of hollow ceramic particles having different average particle diameters are soda lime borosilicate (sodalime). borosilicate), sodium borosilicate and porous microdiatomaceous earth.

As another embodiment of the present invention, based on the total weight of the internal aqueous coating composition in the internal aqueous coating composition for heat insulation and initial fire extinguishing, the content of the third hollow ceramic particles is 2 to 6% by weight, The content of the second hollow ceramic particles may be 6 to 10% by weight, and the content of the first hollow ceramic particles may be 12 to 20% by weight.

As another embodiment of the present invention, the microcapsule for extinguishing the initial material included in the internal water-based paint composition for heat insulation and initial fire extinguishing may have a core-shell structure.

As another embodiment of the present invention, the core part of the microcapsule for extinguishing the initial material contained in the internal water-based paint composition for heat insulation and initial fire extinguishing is perfluoro 2-methyl-3-pentanone (perfluoro 2-methyl-3-pentanone) 3-pentanone) and 1,1,2,2,3,3,4-heptafluoro cyclopentane (1,1,2,2,3,3,4-heptafluoro cyclopentane).

In another embodiment of the present invention, the perfluoro 2-methyl-3-pentanone and 1,1,2,2,3,3,4-heptafluoro The content ratio of cyclopentane (1,1,2,2,3,3,4-heptafluoro cyclopentane) may be 1:3 to 3:1.

As another embodiment of the present invention, the shell part of the microcapsule for extinguishing the initial material included in the internal water-based paint composition for heat insulation and initial fire extinguishing includes melamine-urea-formaldehyde resin. can do.

As another embodiment of the present invention, the average particle diameter of the microcapsules for extinguishing the initial material included in the internal water-based paint composition for heat insulation and initial fire extinguishing may be 60 ~ 80㎛.

The composition of the present invention includes three types of hollow ceramic particles with different average particle diameters, a rust preventive acrylic emulsion, and a micro fire extinguishing capsule for initial fire extinguishing, and exhibits excellent thermal insulation performance, It has the effect of minimizing the damage of a fire by preventing re-combustion.

1 is a view showing a cross-sectional view of an initial fire-extinguishing internal heat-insulating paint film formed while the water-based paint composition of the present invention is cured and dried.
2 is a view showing a cross-section of a microcapsule for initial fire extinguishing included in the water-based paint composition of the present invention.
3 is a photograph showing the state over time when the cured product obtained by drying and curing the water-based paint composition of the present invention is ignited and extinguished in finely pulverized granules.
4 is a diagram showing the DSC curve of the NH microcapsule and the microcapsule change (SEM Image) according to the temperature change.

In order to fully understand the configuration and effect of the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be embodied in various forms and various modifications may be made. However, the description of the present embodiments is provided so that the disclosure of the present invention is complete, and to fully inform those of ordinary skill in the art to which the present invention pertains to the scope of the invention.

The water-based paint composition of the present invention includes three types of hollow ceramic particles having different average particle diameters, an anti-rust acrylic emulsion, and a micro-extinguishing capsule for initial fire extinguishing.

Since the micro fire extinguishing capsule for initial fire extinguishing is composed of a core containing extinguishing gas and an ultra-thin shell composed of organic compounds, the specific gravity is lower than that of the hollow ceramic particles. The micro fire extinguishing capsule for initial fire extinguishing may be located on the top of the coating film.

The anti-rust acrylic emulsion of the present invention may function as a binder of the thermal barrier composition, and may be formed by dispersing in water after the rust preventive agent and the acrylic resin are polymerized.

The rust inhibitor is not particularly limited here, but an amine compound, a benzotriazole-based compound, nitrites, ammonium benzoate, ammonium phthalate, ammonium stearate, ammonium palmitate, ammonium oleate, ammonium carbonate, dicyclohexylamine benzoate, urea, It may be at least one of urotropin, thiourea, phenyl carbamic acid, and cyclohexylammonium-N-cyclohexylcarbamate (CHC).

The content of non-volatile material (NVM) in the anti-corrosive acrylic emulsion can be adjusted through the amount of the organic solvent, and it is preferable that it is 40-50 wt % based on the light-shielding fluorine-acrylic copolymer emulsion. If the content of (Non-Volatile Material, NVM) is less than 40% by weight, the weather resistance, durability, corrosion resistance, and heat resistance of the formed heat shield layer may be lowered, and if it exceeds 50% by weight, workability and mass production of the water-based paint composition sex may be reduced.

The glass transition temperature (T _g ) of the anti-rust acrylic emulsion may be 20 to 50 ° C. If it is less than 20 ° C, there may be a problem in that the coating film is broken, and if it exceeds 40 ° C, there may be a problem in that the drying of the coating film is delayed. can

The minimum film formation temperature (Minimum Film Formation Teamperature, MFFT) of the anti-rust acrylic emulsion may be 10 ~ 40 ℃, but if it is less than 10 ℃, there may be a problem that the rust-proof film is not sufficiently formed in the heat barrier layer, and the temperature is 40 ℃. If it is exceeded, a problem of lowering storage stability may occur due to aggregation of the rust inhibitor.

The pH of the rust preventive acrylic emulsion can be adjusted in the range of 8 to 10. When the pH is less than 8, aggregation or phase separation of the rust preventive agent contained in the rust preventive acrylic emulsion may occur, which may cause a problem in which storage stability is lowered. If it is exceeded, a problem of gelling may occur.

Specifically, as the anti-rust acrylic emulsion, at least one of BASF's Joncryl PRO 1522 (Joncryl PRO 1522), Joncryl Pro 1525 (Joncryl Pro 1525), and Acronal Pro 761 (Acronal Pro 761) materials may be used.

The anti-rust acrylic emulsion as described above can perform a function of improving weather resistance, durability, corrosion resistance, and heat resistance when the heat insulating composition of the present invention is cured to form a heat insulating layer.

On the other hand, when the acrylic binder such as the rust-preventing acrylic emulsion is used together with micro-calcined silica, micro-calcined alumina, and micro-calcined zinc phosphate, the heat insulating layer (coating film, coating layer) is formed of a series of different organic bonding strengths during the curing process. It can be stronger than the binder by about 20% or more, thereby remarkably improving the adhesion of the heat insulating layer without any or intermediate steps, and excellent adhesion to materials such as metals and non-ferrous metals can be realized.

Specifically, micro-calcined silica, micro-calcined alumina, and micro-calcined zinc phosphate, when used simultaneously with the anti-rust acrylic emulsion, provide a very good level of adhesion through the strong organic bonding energy between each component during the curing process when the heat insulating layer (coating film) is formed. It can implement properties and adhesion, and can greatly improve durability, weather resistance, rust prevention, self-cleaning properties, and also.

As described above, the heat insulating layer formed by curing the heat insulating composition can exhibit a very good level of adhesion and adhesion regardless of the material of the object to be coated. can be realized, and a sufficient insulation effect can be exhibited even with a very thin thickness.

Due to this excellent thermal insulation effect, the thickness of the thermal insulation layer of the present invention can be configured to be 300 μm or less, and it is confirmed that even such an ultra-thin coating film (insulation layer) can exhibit a superior thermal insulation effect than conventional thermal insulation layers. can

In addition, when the composition of the present invention is used, the weight of the heat insulating composition to be coated per unit area can be greatly reduced, thereby shortening the coating time and reducing costs.

In addition, during the curing process when forming a coating film, micro-calcined silica, micro-calcined alumina, and micro-calcined zinc phosphate are combined with an acrylic binder, resulting in a synergy effect in which the organic binding force is stronger by about 20% or more compared to other types (series) binders. ) occurs, the above-described adhesion, adhesion, durability, weather resistance, and rust resistance can be remarkably improved.

Micro-calcined silica, micro-calcined alumina, and micro-zinc phosphate can be produced by irradiating microwaves using a conventional kiln using microwaves to generate heat. Micro-calcined silica, micro-calcined alumina, and micro-calcined zinc phosphate have a low coefficient of thermal expansion and low thermal shock, so that deterioration and shrinkage expansion of the heat insulating layer can be suppressed, and at the same time, excellent rust prevention performance can be exhibited. Preferred firing temperature may be about 700 ~ 1500 ℃, more preferably about 800 ~ 1200 ℃.

Based on the total weight of the thermal insulation composition, the micro-calcined silica may be about 2 to 6 wt %, the micro-calcined alumina may be about 2 to 6 wt %, and the micro-calcined zinc phosphate may be included in about 3 to 7 wt %. When the content is adjusted within the above content range, a composition with improved adhesion, adhesion, durability, weather resistance, and rust prevention properties of the heat insulating layer can be prepared.

The hollow ceramic particles of the present invention mainly serve to improve thermal insulation. Since the hollow ceramic particles include a hollow inside, the rate of heat transfer introduced from the outside can be minimized, thereby greatly improving the thermal insulation properties of the heat insulating layer.

The hollow ceramic particles may have a microsphere shape, and may be configured to include soda lime borosilicate. When using the soda lime borosilicate (Soda lime borosilicate), it can provide excellent compressive strength, so it is suitable for use as a building paint material.

On the other hand, in the present invention, by mixing and using three different types of hollow ceramic particles, thermal conductivity is lowered in stages to minimize heat transfer from the outside to the inside of the coating film or from the inside to the outside of the coating film to maximize the insulation performance. have.

Specifically, the hollow ceramic particles of the present invention have a third hollow ceramic particle having an average particle diameter of 30 to 60 μm, a second hollow ceramic particle having an average particle diameter of 20 to 30 μm, and an average particle diameter of 10 to 20 μm. It may be configured to include the first hollow ceramic particles made of.

First, the first hollow ceramic particles have a film-like fire extinguishing microcapsule layer formed on the top of the surface and formed immediately below to serve as the first heat conduction blocking (insulation), and the particle size is the smallest and the surface area is the largest, so the insulation effect is the greatest. The average particle diameter of the first hollow ceramic particles is preferably 10 to 20 μm.

Second, the second hollow ceramic particles may be formed directly under the first hollow ceramic particle forming layer on a coating film, and serve to block heat that cannot be blocked in the first hollow ceramic particle layer in two steps, and the average particle diameter , the surface area may be second after the first hollow ceramic particle among the three types of hollow ceramic particles, and the thermal insulation effect may also be second after the first hollow ceramic particle layer. The average particle diameter of the second hollow ceramic particles is preferably 20 to 30 μm.

Finally, the third hollow ceramic particles are formed between the coating film formed by the second hollow ceramic particles and the surface of the object to be coated. is the largest and has the smallest surface area, and thus has the smallest thermal insulation effect. The average particle diameter of the third hollow ceramic particles is preferably 30 to 60 μm.

On the other hand, it is preferable that the content of the first hollow ceramic particles is adjusted to 2 to 6% by weight, the content of the second hollow ceramic particles to 6 to 10% by weight, and the content of the third hollow ceramic particles to 12 to 20% by weight. , as described above, the average particle diameter range of each hollow ceramic particle is adjusted differently, and the content of particles with a small average particle diameter is included in a relatively small range and the content of particles with a large average particle diameter is included in a relatively large range. ) to maximize the insulation performance.

As above, by mixing and using three types of hollow ceramic particles with different average particle diameters, thermal conductivity is lowered in stages to minimize heat transfer from the outside to the inside of the coating film or from the inside to the outside of the coating film, thereby maximizing the insulation performance. have.

As described above, the effect of maximizing the thermal insulation performance by lowering the thermal conductivity in stages can be achieved by making a difference in the surface area of each different type of ceramic particle, the first hollow ceramic particle, the second hollow ceramic particle and the second When the layers each formed by the three hollow ceramic particles are referred to as a first heat insulating layer, a second heat insulating layer, and a third heat insulating layer, heat conduction may be blocked in the order of the first heat insulating layer, the second heat insulating layer, and the third heat insulating layer, and at this time, the amount of heat insulation Comparing the size of , it may be the amount of heat insulation of the first heat-insulating layer > the amount of heat insulation of the second heat-insulating layer> the amount of heat-insulating of the third heat-insulating layer.

1 is a view showing a cross-sectional view of an initial fire-extinguishing internal heat-insulating paint film formed while the water-based paint composition of the present invention is cured and dried.

1a is an initial fire extinguishing N-H micro extinguishing capsule 10, the first hollow ceramic particles 20, the second hollow ceramic particles 30, the third hollow ceramic particles 40 and the inorganic filler (50) It shows the state before curing and drying by applying the composition containing the coating to the object (60).

Figure 1b shows the initial fire extinguishing microcapsule layer (10a), the heat insulating layer (20a), and the undercoat layer (30a) respectively sequentially formed by the above particles.

The water-based paint composition of the present invention comprises an initial fire extinguishing microcapsule layer (10a) on top of the coating film, a heat insulating layer (20a) having thermal insulation performance sequentially below it, and an undercoat layer (30a) including the inorganic filler while curing. can be arranged.

As the water-based paint composition of the present invention is cured and dried, the microcapsule layer for initial fire extinguishing (10a) may be located on the top of the coating film. The composition is directly sprayed on the flame, which has the effect of quickly responding to the initial fire.

While the water-based paint composition of the present invention is cured and dried, the hollow ceramic particles may be relatively disposed under the heat insulating layer due to the difference in specific gravity. More specifically, when the heat-insulating layer includes a first surface in contact with the to-be-coated object, and a second surface (surface exposed to the outside) that is opposite to the first surface, in the cross section cut in the thickness direction, the first surface The number of hollow ceramic particles may increase toward the second surface direction. As above, since most of the hollow ceramic particles are disposed in the lower part (the part relatively close to the second surface), it is possible to very effectively suppress the leakage of indoor heat through the heat insulating coating layer of the object to be coated, and the heat insulation of the heat insulating layer Performance can be maximized.

As the water-based paint composition of the present invention cures, a microcapsule layer for initial fire extinguishing (10a) may be formed on the top of the coating film. This may mean that the microcapsule layer 10a for initial fire extinguishing has been formed, and since a large amount of microcapsules is located on the top of the coating film as described above, it is possible to effectively suppress the initial fire when a fire occurs.

The water-based coating composition of the present invention can form a heat-insulating layer 20a under the microcapsule layer 10a while curing, which is 70% or more of the hollow ceramic particles included in the water-based coating composition of the present invention. It may mean that the heat insulation layer 20a having heat insulation performance is formed by being located below the microcapsule layer 10a, and as described above, a large amount of the hollow ceramic particles is located just below the microcapsule layer 10a. By doing so, it is possible to achieve a thermal conductivity of 0.03 W/m·K or less while exhibiting the function of suppressing the initial fire.

The heat insulating composition of the present invention may further include a fluorine-based stain resistant additive.

The fluorine-based stain inhibitor can impart water repellency and oil repellency to the heat insulating layer, thereby improving durability of the heat insulating layer. The fluorine-based stain inhibitor may include at least one component of a polyurethane containing fluorine groups, a polyacrylic emulsion containing a fluorine group, and a polyacrylic modified urethane emulsion containing a fluorine group. Based on the total weight of the insulation composition, the fluorine-based stain inhibitor may be included in an amount of about 1 to 3% by weight. When included in the above weight range, the water repellency and oil repellency of the coating film are appropriately improved.

Additionally, the composition of the present invention may include a zirco-aluminate coupling agent.

The zirco-aluminate coupling agent can improve adhesion and adhesion with metals or alloys. Therefore, when the heat insulating composition is coated on the surface of the metal/alloy to be coated, the adhesion and adhesion between the heat insulating layer and the surface to be coated can be greatly improved, and separate layers such as the undercoat layer, the intermediate layer, and the primer layer are unnecessary, so that a single layer can be implemented, and a very thin coating film thickness can be implemented.

Based on the total weight of the insulating composition, the zirco-aluminate coupling agent may be included in an amount of about 0.3 to 0.7 wt%.

The heat insulating composition further includes one or more of propylene glycol, a thickener, a corrosion inhibitor, a pH adjuster, a film forming agent, a preservative, or an antifoaming agent.

Propylene glycol can function as a cryostabilizer. Based on the total weight of the insulating composition, propylene glycol may be included in an amount of about 0.1 to 0.5% by weight.

The thickener can improve the storage stability of the particles, such as controlling the viscosity of the composition, imparting thickening and thixotropic properties, preventing sedimentation of the particles, improving redispersibility, improving flowability, and the like.

The thickener may be, for example, hydroxyethyl cellulose, but is not limited thereto. Based on the total weight of the insulation composition, the thickener may be included in an amount of about 0.1 to 0.5% by weight.

The corrosion inhibitor can minimize corrosion even in a high-temperature and high-humidity environment, and may be included in an amount of about 0.8 to 1.2% by weight based on the total weight of the insulation composition.

The pH adjusting agent may be used to adjust the acidity of the composition within a certain range, and may be, for example, aminomethylpropanol (amp), but is not limited thereto. Based on the total weight of the thermal insulation composition, the pH adjusting agent may be included in an amount of about 0.3 to 0.7% by weight.

The film forming agent may be, for example, texanol, but is not limited thereto. Based on the total weight of the thermal insulation composition, the film former may be included in about 1 to 3% by weight.

The preservative may be, for example, n-alkyl dimethyl benzyl ammonium, but is not limited thereto. Based on the total weight of the insulation composition, the preservative may be included in an amount of about 0.1 to 0.5% by weight.

The heat insulating composition includes water (H ₂ O), and water may be used to adjust the viscosity. Based on the total weight of the heat insulating composition according to the embodiment, water may be about 14 to 18% by weight, and within this range, when the composition is applied to the surface of a metal or alloy, optimal adhesion and adhesion can be implemented, The curing rate can be improved.

In addition, the thermal insulation composition of the present invention may further include a fluorine-based surfactant

The fluorine-based surfactant may include a perfluoroalkyl group, and may be included in an amount of 0.1 to 0.5% by weight based on the total weight of the composition.

2 is a view showing a cross-section of a microcapsule for initial fire extinguishing included in the water-based paint composition of the present invention.

The water-based paint composition of the present invention may include fire extinguishing microcapsules for initial fire extinguishing, and the fire extinguishing microcapsules may be configured in a form including a core-shell structure, as shown in FIG. 2 .

In the case of the microcapsule of the present invention having a core-shell structure, the fire extinguishing composition, which is a material in the microcapsule, is discharged to the outside to extinguish the fire in the initial stage.

Specifically, when a fire occurs, the extinguishing composition may be vaporized and expanded by heat, but it does not react (rupture, leak) due to the durability and airtightness of the shell part, and in case of a fire, it explodes and vaporizes by self-responding to a temperature of 120 to 220 ° C. The fire extinguishing composition directly sprays on the flame to extinguish the fire by breaking the chain reaction with fuel (flammables), oxygen (air), heat (ignition source), and heat (ignition source) during the chain reaction, which are the four conditions of combustion. It can be cooled from 800℃ to 30℃ within 15 seconds to suppress re-combustion. The microcapsule according to this embodiment includes a micro-sized shell part having a closed space therein, and a fire extinguishing composition on the core part located inside the shell part.

When the shell part reaches 120~220℃ due to thermal runaway in the event of a fire, it detects this temperature (self-temperature response) and melts within 8 seconds, and the extinguishing material in the core is sprayed to form a thermoplastic resin that can extinguish the fire at the beginning. can

And it is possible to suppress reburn by cooling from 800°C to 30°C within 15 seconds.

Specifically, the shell portion is preferably made of a non-porous high molecular polymer in order to perform a role by a temperature reaction. For example, polyurethane resin, polyurea resin, polyamide resin, polyester resin, polycarbonate resin, aminoaldehyde resin, melamine resin, polystyrene resin, styrene-acrylate copolymer resin, styrene-methacrylate copolymer resin , gelatin, polyvinyl alcohol, phenol formaldehyde resin and resorcinol formaldehyde resin may be provided including one or more selected from the group consisting of.

More preferably, the shell portion may be configured to include a melamine-urea-formaldehyde resin, wherein the melamine-urea-formaldehyde resin has a temperature-sensitive characteristic. Excellent fire extinguishing effect at the initial stage of fire can be obtained by sensitively self-responding at a temperature in the range of 220°C, destroying the shell and allowing the extinguishing material to be sprayed.

The shell portion forms the outline of the microcapsule.

On the other hand, although the present embodiment discloses an example in which the shell portion is formed in a spherical shape, it is not limited thereto. For example, the shell portion may be formed in the form of a tube, and the extinguishing composition may be embedded in the closed space inside the shell portion in the form of a tube.

A fire extinguishing composition may be included in the core part present on the inside of the shell part.

The extinguishing composition of the present invention is perfluoro 2-methyl-3-pentanone (perfluoro 2-methyl-3-pentanone) and 1,1,2,2,3,3,4-heptafluoro cyclopentane ( 1,1,2,2,3,3,4-heptafluoro cyclopentane).

The perfluoro 2-methyl-3-pentanone (perfluoro 2-methyl-3-pentanone) and 1,1,2,2,3,3,4-heptafluoro cyclopentane (1,1,2, 2,3,3,4-heptafluoro cyclopentane) has excellent storage stability inside the shell and can show effective injection efficiency when released to the outside of the shell.

On the other hand, the perfluoro 2-methyl-3-pentanone (perfluoro 2-methyl-3-pentanone) and 1,1,2,2,3,3,4-heptafluoro cyclopentane (1,1, 2,2,3,3,4-heptafluoro cyclopentane) is preferably mixed in a ratio of 1:3 to 3:1.

When the ratio of perfluoro 2-methyl-3-pentanone to 1,1,2,2,3,3,4-heptafluoro cyclopentane is less than 1:3, extinguishing ability and extinguishing material in the core of the shell storage stability of There may be a problem that the anti-reburn effect of the extinguishing material in the shell core is lowered.

It is preferable that the particle size of the microcapsule for digestion of the present invention is adjusted to 60-80㎛.

When the particle diameter of the microcapsule is less than 60 μm, the particle diameter of the capsule becomes small and there may be difficulties in the process of applying it to a specific part of the surface to be coated. There may be a problem in that it does not exhibit fast reactivity according to the

Based on the total weight of the water-based paint composition of the present invention, including the composition as described above, the content of the anti-rust acrylic emulsion is 30-40% by weight. The total content of the three types of hollow ceramic particles is 25- 35% by weight, the content of the microcapsule for digestion is preferably contained in 5 to 15% by weight.

When adjusted within this content range, physical properties such as weather resistance, durability, heat resistance, and contamination resistance, including the thermal insulation effect of the insulating layer, can be optimally adjusted. , when included in excess of 15% by weight, the coating workability deteriorates due to increase in viscosity, etc., the durability of the dried coating film is deteriorated, and may be inappropriate in terms of manufacturing cost.

In particular, the content of the microcapsules for digestion: the total content of the three types of hollow ceramic particles is preferably adjusted to 1:2 to 1:4.

When the content of the fire extinguishing microcapsule is less than 2 compared to the total content of the three types of hollow ceramic particles, a problem in that the thermal insulation performance is lowered in peacetime when a fire does not occur may occur, and the content of the fire extinguishing microcapsule is 3 If the total content of the hollow ceramic particles exceeds 4, there may be a problem that the fire extinguishing performance is lowered in case of a fire.

When adjusted within the above range, it is possible to optimize the digestion performance of the microcapsule for digestion, while exhibiting excellent thermal insulation performance.

3 is an actual photograph showing the state over time when the cured product obtained by drying and curing the water-based paint composition of the present invention is ignited and extinguished in finely pulverized granules, where 3a is before ignition (0 seconds), 3b indicates the state after 4 seconds, 3c after 8 seconds, and 3d after 15 seconds.

The granules are burned and ignited until 8 seconds after ignition, and then gradually extinguished after 8 seconds, showing a tendency to be completely extinguished after 15 seconds. It reaches and senses this temperature (self-temperature response), melts and bursts within 8 seconds, and the extinguishing material in the core is sprayed. can be seen as showing

4 is a diagram showing a differential scanning calorimetry (DSC) curve of the N-H microcapsule and the microcapsule change (SEM Image) according to temperature change.

In the vicinity of 72 ℃, the microcapsules exist in a spherical shape, but in the vicinity of 150 ℃, it is temperature-sensitive and it is confirmed that the shell part is in a ruptured form. could see that

Hereinafter, specific examples are provided to help the understanding of the present invention. However, the following examples are only provided for easier understanding of the present invention, and the content of the present invention is not limited by the examples.

[Example 1]

The following composition was stirred to prepare a heat insulating composition having a fire extinguishing function.

Specific compositions and composition ratios are shown in Table 1 below.

On the other hand, the N-H-micro digestive capsule of Example 1 is composed of a single shell-core structure, and the core part is perfluoro 2-methyl-3-pentanone and 1,1 ,2,2,3,3,4-heptafluoro cyclopentane (1,1,2,2,3,3,4-heptafluoro cyclopentane) is included in a 1:1 content, and the shell part contains melamine-urea- It was formulated to contain a formaldehyde resin (Melamine-urea-formaldehyde resin).

[Comparative Example 1]

A heat insulating composition was prepared by stirring the composition having the composition and composition ratio according to the existing Korean Patent No. 10-2283891. Specific compositions and composition ratios are shown in Table 1 below.

[Comparative Example 2]

A heat insulation composition was prepared by stirring the composition having the composition and composition ratio according to the existing Korean Patent No. 10-2283877. Specific compositions and composition ratios are shown in Table 1 below.

[Comparative Example 3]

A heat insulation composition was prepared by stirring the composition having the composition and composition ratio according to the existing Korean Patent No. 10-2311501. Specific compositions and composition ratios are shown in Table 1 below.

NO division Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 One water (H ₂ O) 13 15 14 14 2 Cryostabilizer (Propylene Glycol) 0.2 0.3 0.3 0.3 3 Fluorosurfactant (FC 4430) 0.3 0.3 0.5 0.3 4 Solvent-free wetting agent (byk-190) - 0.3 - 0.3 5 Thickener ( NATRASOL 250HR) 0.3 0.3 0.3 0.3 6 Corrosion inhibitor (SYTHRO COR B) 0.4 0.5 One 0.5 7 Film former (TEXANOL) 1.3 2 2 2 8 Zinc Pyrithion 0.2 0.3 0.1 0.3 9 Titanium dioxide (TiO ₂ ) 8 10 7 7 10 Titanium Dioxide Anatase Nanopowder - 0.5 - 0.5 11 micro aluminum titanate
(MICRO ALUMINIUM TITANATE) - - 2 - 12 micro calcined alumina 4 - 4 5 13 micro calcined silica 4 - 4 4 14 micro zinc phosphate 4 - 5 4 15 Potassium titanate (whisker) - - - - 16 sodium orthosilicate - - - - 17 Silicone Acrylic Copolymer Emulsion - 34 30 30 18 Anti-rust acrylic emulsion
(BASF JONCRYL PRO 1522) 33 - - - 19 Light-shielding fluorine-acrylic copolymer emulsion
(ARKEMA KYNOR AQUATEC FMA12) - 5 5 5 20 Fumed Silica - 3 2 3 21 Aluminum Silicate (INSULADD) - 5 7 4 22 Soda Lime Boron Silicate Ceramic Hollow Microspheres (K-20)
30~60㎛ 4 - - - 23 Soda Lime Boron Silicate Ceramic Hollow Microspheres (H32HS)
20-30㎛ 8 - - - 24 Soda lime boron silicate ceramic hollow microspheres (im 30K)10~20㎛ 14 7 9 5 25 Alkali aluminosilicate microspheres (non-porous body, average particle diameter of 1 to 5 ㎛) - 13 3 11 26 Preservative (BIOCIDE 3300N) 0.1 0.5 0.3 0.5 27 PH regulator (AMP 95) 0.3 0.5 0.5 0.5 28 ZIRCO-ALUMINATE Coupling Agent 0.3 - 0.5 - 29 Defoamer (BYK 024) 0.3 0.5 0.5 0.5 30 Fluorine-based stain inhibitor (3M SRC 220) 1.3 2 2 2 31 N-H-Micro Digestive Capsules 10 - - -

[Test Example 1]

<Conditions for forming dry film>

The compositions of Example 1 and Comparative Examples 1 to 3 were applied to one surface of the object to be coated under the conditions of Table 2 below and dried to form a dry coating film. Here, for the object to be coated, KS F 3101 ordinary plywood with a thickness of 1.2mm, a width of 200mm, and a length of 250mm was used.

Condition unit Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Dry Film Thickness (DFT) μm 252 230 457 269 Number of coats (brush) episode 2 2 4 2 Undercoat dry film thickness μm - 82 - - drying time
(Outside temperature 33℃) Dry to touch min 15 20 16 16 solidified dry min 25 30 40 25 Coating interval time between the number of top coats min 30-40 40 60 40 * In Comparative Example 1, the dry coating film was formed through a quick-drying anti-rust primer.

<Measurement of performance such as solar reflectance after dry film formation>

As described above, the dry coating film formed through the compositions of Example 1 and Comparative Examples 1 to 3 was measured through each test standard as shown in [Table 3].

Experimental items unit test standard Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 thermal conductivity w/mk KSM 3809 : 2006 0.03 0.03 0.027 0.03 adherence B KSM ISO 2409 or ASTM 3359 5B 5B 4B 5B stain resistance class 7.7 of KSF 4737 and KSK 0910 5th grade 5th grade 4th grade 5th grade Anti-rust (hot water spray) hr KSD 9502 300 300 300 300 moisture permeability (sd) m KSF 4715 : 2007 1.5 1.5 0.8 1.0 permeability cm/hr KSF 2274 Great Great Great Great Promotion
weather resistance hour hr KSM ISO 4892-1
4892-2 1200 1200 1200 1200 film exterior after 1200hrs More than
doesn't exist More than
doesn't exist More than
doesn't exist More than
doesn't exist wash-resistance episode 3351 of KSM 5000 1000 1000 - 1100

<Measurement of fire extinguishing performance after dry film formation>

It is made of a plastic material with a width of 160mm, a length of 210mm, and a height of 210mm, and the burner was fixed and ignited in the shape of a square cylinder with an open top.

After the one surface on which the dry coating film of Example 1 was formed was sealed by covering the open upper surface so that the flame of the burner was in contact with the one surface, the following temperatures and times were measured while the flame of the burner was sealed.

Here, the initial extinguishing self-sensitization temperature is a measurement of the temperature when the microcapsule reacts with the flame of the burner in contact with the one surface using a digital thermometer.

The above test was performed 5 times, and the measurement results are shown in [Table 4] below.

- Initial fire extinguishing self-sensitization temperature: The temperature at which the microcapsule responds when the burner flame is sealed.

- Initial extinguishing time: The time from when the microcapsule reacts after ignition to the moment when the flame (flame) disappears and the first smoke is generated

- Reburn suppression time: time when no smoke is generated after the flame is extinguished

Measurement items of Example 1 unit 1 time Episode 2 3rd time 4 times 5 times Initial fire extinguishing autosensitivity temperature ℃ 170 165 180 165 170 Initial digestion time sec 8 8 9 8 8 Reburn suppression time sec 15 15 16 15 15

In the case of Comparative Examples 1 to 3, since the microcapsules capable of extinguishing fire were not included, a numerical value corresponding to the measurement item of the fire extinguishing performance test of Example 1 could not be measured.

The dry coating film formed through the external water-based paint composition for step insulation and initial fire extinguishing of the present invention was able to confirm the excellent thermal insulation performance showing the thermal conductivity of 0.03 W/m·K or less in normal use. The shell part of the microcapsule quickly reaches 120~220℃ due to thermal runaway, detects this temperature, melts and bursts within 8 seconds, and the extinguishing material in the core is sprayed, and the extinguishing material is cooled from 800℃ to 30℃ within 15 seconds and reproduced suppression of cattle was confirmed.

On the other hand, in Comparative Examples 1 to 3 of the prior art, although the thermal conductivity was 0.03 W/m·K or less, the microcapsules were mixed at a constant ratio compared to the total content of the non-porous silicone polymer particles and the hollow ceramic particles as in the present invention. Therefore, in the event of an initial fire, it cannot show the effect of quickly extinguishing it.

That is, through the water-based paint composition of the present invention, it is possible to form a dry coating film having a thermal conductivity of 0.03 W/m·K or less and excellent initial material suppression performance.

10: NH micro digestive capsule for initial digestion
10a: microcapsule layer for initial digestion
20: first hollow ceramic particles
20a: heat insulation layer
30: second hollow ceramic particles
30a: undercoat layer
40: third hollow ceramic particle
50: inorganic filler (fired micro alumina + fired micro silica + micro zinc phosphate)
60: target
70: microcapsule core part for initial digestion
80: Microcapsule shell part for initial fire extinguishing

Claims (9)

three types of hollow ceramic particles having different average particle diameters;
anti-rust acrylic emulsion; and
Including microcapsules for extinguishing the initial material of a core-shell structure that respond to self-temperature at 120 to 220 ° C,
The hollow ceramic particles include a first hollow ceramic particle having an average particle diameter of 10 to 20 μm, a second hollow ceramic particle having an average particle diameter of 20 to 30 μm, and a third hollow ceramic particle having an average particle diameter of 30 to 60 μm. including,
The core part of the microcapsule for extinguishing the initial material is perfluoro 2-methyl-3-pentanone and 1,1,2,2,3,3,4-heptafluorocyclo containing pentane (1,1,2,2,3,3,4-heptafluoro cyclopentane),
The shell part of the microcapsule for extinguishing the initial material contains melamine-urea-formaldehyde resin,
The microcapsule for extinguishing the initial fire: the weight ratio of the three types of hollow ceramic particles is 1:2 to 1:4. According to claim 1,
Based on the total weight of the water-based paint composition, the content of the anti-rust acrylic emulsion is 30-40% by weight, the total content of the three types of hollow ceramic particles is 25-35% by weight, and the microcapsule for extinguishing the initial material The content of the internal water-based paint composition for thermal insulation and initial fire extinguishing is 5 to 15% by weight. According to claim 1,
The three types of hollow ceramic particles having different average particle diameters are soda lime borosilicate, sodium borosilicate, and porous microdiatomaceous earth. According to claim 1,
Based on the total weight of the internal water-based paint composition, the content of the third hollow ceramic particles is 2 to 6% by weight, the content of the second hollow ceramic particles is 6 to 10% by weight, and the content of the first hollow ceramic particles is 2 to 6% by weight. The content is 12 to 20% by weight of an internal water-based paint composition for heat insulation and early fire extinguishing. delete delete According to claim 1,
The perfluoro 2-methyl-3-pentanone (perfluoro 2-methyl-3-pentanone) and 1,1,2,2,3,3,4-heptafluoro cyclopentane (1,1,2, 2,3,3,4-heptafluoro cyclopentane) in a weight ratio of 1:3 to 3:1, an internal water-based paint composition for heat insulation and early fire extinguishing. delete According to claim 1,
The average particle diameter of the microcapsules for extinguishing the initial fire is 60 ~ 80㎛ internal water-based paint composition for heat insulation and initial fire extinguishing.

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