KR20160121060A

KR20160121060A - Fire-proof adhhestive composition, fire-proof sandwich panel applying the same and method for manufacturing the same fire-proof sandwich panel

Info

Publication number: KR20160121060A
Application number: KR1020150050481A
Authority: KR
Inventors: 노명제; 정영철; 박종철; 김민우; 한춘수; 정동호; 박도영; 김경일
Original assignee: 주식회사 지오스에어로젤
Priority date: 2015-04-09
Filing date: 2015-04-09
Publication date: 2016-10-19
Also published as: WO2016163573A1

Abstract

A refractory adhesive composition, a refractory sandwich panel using the same, and a method of manufacturing the refractory sandwich panel. In one embodiment of the present invention, 70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And an additive for the remainder, and a refractory sandwich panel to which the refractory adhesive composition and a method of manufacturing the same are provided.

Description

FIELD PROOF ADHESIVE COMPOSITION FIRE-PROOF SANDWICH PANEL APPLYING THE SAME AND METHOD FOR MANUFACTURING THE SAME FIRE-PROOF SANDWICH PANEL BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

Refractory adhesive composition, refractory sandwich panel using the same, and a method of manufacturing the same.

Currently commercially available sandwich panels are mainly made of polyurethane foam as a core material, but they are vulnerable to fire or heat.

Specifically, the polyurethane foam is a material which is easily burned by a fire or heat, so that fire or heat can be further diffused. Further, when the polyurethane foam is carbonized, smoke and toxic gas are generated, which may cause a secondary risk.

However, researches for improving the lightweight and heat insulating properties of core materials have been mainly carried out in the field, and studies for improving the fire resistance thereof are still lacking.

In order to improve the fire resistance of the above-mentioned sandwich panel, the inventors of the present invention provide a study result based on a substance to be bonded to the core material of the sandwich panel, that is, an adhesive composition.

Specifically, in one embodiment of the present invention, it is possible to provide a refractory adhesive composition wherein the binder, the airgel, and the additive are each contained in a specified amount.

In another embodiment of the present invention, it is possible to provide a refractory sandwich panel to which different core materials are bonded by applying the refractory adhesive composition.

In another embodiment of the present invention, a method of manufacturing the refractory sandwich panel may be provided.

In one embodiment of the present invention, a composition comprising 70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And an additive of the remainder.

The aerogels may be silica airgel, hydrophobic fumed silica, or hydrophilic fumed silica.

Independently, the aerogels may be in the form of a powder, a granule, or a mixture thereof.

The binder may be selected from the group consisting of silicates, metamorphic silicates, potassium silicates, tetraethyl orthosilicate (TEOS), and tetramethyl orthosilicate (TMOS) And may include one selected, or two or more silicates.

On the other hand, the additive may be selected from a surfactant, a surface smoothing agent, a water-resistant additive, and a combination thereof.

In another embodiment of the present invention, the first heat insulating core material; A second heat insulating core; And a first adhesive layer positioned between the first adiabatic core and the second adiabatic core, wherein the first adhesive layer comprises 70 to 95 wt% of a binder; 1 to 10% by weight of an airgel; And an additive for the remainder.

The first adhesive layer may be foamed by heat or a fire and converted into a first foamed layer.

The thickness of the first adhesive layer may be 500 m to 1 mm.

The thickness of the first foam layer may be 5 to 20 mm.

The thicknesses of the first and second heat-insulating core members may be respectively 5 to 50 mm.

In this regard, the structure of the first adhesive layer may be a single layer, or a double layer.

Alternatively, it may be a multi-layered structure of three or more layers.

Wherein the sandwich panel comprises: a first steel plate positioned on the outer surface of the first heat insulating core; And a second adhesive layer positioned between the first adiabatic core and the first steel plate.

A second steel plate positioned on the outer surface of the second heat insulating core; And a third adhesive layer positioned between the second adiabatic core and the second steel plate.

The second adhesive layer and the third adhesive layer each comprise 70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And an additive of the remainder.

At this time, the second adhesive layer and the third adhesive layer may be foamed by heat or fire, respectively, and converted into a second foamed layer and a third foamed layer, respectively.

The thicknesses of the second adhesive layer and the third adhesive layer may be 500 [mu] m to 1 mm, respectively.

The thicknesses of the second foam layer and the third foam layer may be respectively 5 to 20 mm.

The first heat-insulating core and the second heat-insulating core may each be in a board shape.

Independently, the first and second insulating core members may be made of a material selected from the group consisting of polyurethane, expanded polystyrene (EPS), extruded polystyrene (XPS), glass wool, mineral wool wool), and a material including any of these materials.

In another embodiment of the present invention, there is provided a composition comprising 70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And a remainder of an additive; preparing a first refractory adhesive composition; And adhering the first heat-insulating core material and the second heat-insulating core material by applying the first refractory adhesive composition between the first heat-insulating core material and the second heat-insulating core material.

70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; Preparing a first refractory adhesive composition comprising the binder, the airgel, and the remainder; preparing a mixture comprising the binder, the airgel, and the water; And adding the additive to the mixture and stirring to obtain the first refractory adhesive composition.

Applying the first refractory adhesive composition between the first and second heat-insulating core materials to bond the first and second heat-retaining core materials to each other by applying the refractory adhesive composition to the first heat- Applying on one side; And laminating the second heat-insulating core material on the first refractory adhesive composition application surface.

Specifically, in the step of applying the first refractory adhesive composition to one surface of the first heat insulating core material, the application amount of the first refractory adhesive composition per an area of the first heat insulating core material may be 1.4 to 2.8 kg / m < 2 & .

Applying the first refractory adhesive composition between the first adiabatic core and the second adiabatic core to bond the first adiabatic core material and the second adiabatic core material; Thereafter, 70 to 95% by weight of a binder; 1 to 10% by weight of an aerogel and the balance additive; preparing a second refractory adhesive composition; And adhering the first iron plate to the outer surface of the first heat-insulating core by applying the second refractory adhesive composition.

Specifically, the step of applying the second refractory adhesive composition to the outer surface of the first heat-insulating core material to bond the first steel sheet comprises: applying the second refractory adhesive composition to the outer surface of the first heat-insulating core material; And laminating the first steel sheet on the second refractory adhesive composition application surface.

In the step of applying the second refractory adhesive composition to the outer surface of the first adiabatic core, the application amount of the second refractory adhesive composition per an area of the first adiabatic core may be 1.4 to 2.8 kg / m 2.

Applying the second refractory adhesive composition to the outer surface of the first heat-insulating core material to bond the first iron plate; Thereafter, 70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And a remainder of an additive; preparing a third refractory adhesive composition; And applying the third refractory adhesive composition to the outer surface of the second heat-insulating core material to bond the second steel sheet.

In the step of applying the third refractory adhesive composition to the outer surface of the second heat insulating core material, the application amount of the third refractory adhesive composition per an area of the second heat insulating core material may be 1.4 to 2.8 kg / m < 2 >.

The refractory adhesive composition according to one embodiment of the present invention can prevent the fire or heat from diffusing by foaming by a fire or heat to form a foam layer and prevent secondary hazards such as smoke and harmful gas can do.

The refractory sandwich panel according to another embodiment of the present invention includes the adhesive layer formed by applying the refractory adhesive composition, so that not only the fire resistance and the heat resistance are excellent but also the secondary risk thereof can be reduced.

The manufacturing method of the refractory sandwich panel according to another embodiment of the present invention corresponds to a method of manufacturing the refractory sandwich panel having the excellent performance by simply applying the refractory adhesive composition.

1 schematically illustrates a refractory sandwich panel in accordance with an embodiment of the present invention.
Fig. 2 is a photograph of one surface of the heat insulating core used in the production of one embodiment of the present invention. Fig.
3 is a photograph of a fireproof sandwich panel manufactured according to an embodiment of the present invention.
Figure 4 schematically illustrates the shape of a refractory sandwich panel according to another embodiment of the present invention.
5 and 6 are photographs of a fireproof sandwich panel manufactured according to another embodiment of the present invention.
7 to 9 are photographs taken after a fireproof sandwich panel according to an embodiment of the present invention is exposed to a firearm. Specifically, FIG. 7 is a photograph of the exposed surface, and FIG. 8 is a photograph of a side taken. 9 is a photograph of a face 1 of the form 1 sandwich panel cut off to photograph both the exposed face and the unexposed face.
10 is a photograph of a scene in which a fireproof sandwich panel according to another embodiment of the present invention is exposed to a firearm. Fig. 11 is a photograph of the exposed surface, and Fig. 12 is a photograph of a side taken.

Hereinafter, embodiments of the present invention will be described in detail. However, it should be understood that the present invention is not limited thereto, and the present invention is only defined by the scope of the following claims.

This is because, by including the above-mentioned binder which is expanded and expanded when exposed to fire or heat, the above-mentioned aerogels, which are materials with extremely low thermal conductivity, and the above additives that improve the properties of other compositions, Adhesive composition.

Specifically, the binder, the additive, and the water may be contained in the internal pores of the aerogels. When the binder is expanded and expanded in a high temperature environment such as fire or heat, the airgel containing the binder in the inner pores can be expanded and expanded, and the expansion ratio and the foam density can be excellently expressed at this time.

As will be described later, when the refractory adhesive composition is applied and different core materials are adhered to each other, a sandwich panel having an adhesive layer formed by the refractory adhesive composition can be manufactured.

When the core material located outside the sandwich panel is exposed to a fire or heat, the adhesive layer located inside the core material is foamed and expanded to be converted into a foam layer, and the foam layer suppresses diffusion of heat and transfer of heat, (For example, smoke, harmful gas, etc.) that may be generated by the carbonization of the core material located inside.

That is, the refractory adhesive composition not only imparts fire resistance and heat resistance to the sandwich panel manufactured by applying the refractory adhesive composition, but also has the advantage of being able to prevent a secondary danger due to fire or heat.

As described above, 70 to 95% by weight of the binder, 1 to 10% by weight of the airgel, and the additive are included in the balance of 100% by weight of the total amount of the refractory adhesive composition, The reason for limiting is as follows.

Binder: 70 to 95 wt%

When the content of the binder in the refractory adhesive composition is more than 95% by weight, the foaming performance may be lowered as the content of the airgel is decreased. Therefore, the content of the binder should be limited to 95% by weight or less.

However, when the content is less than 70% by weight, the foaming rate of the binder itself is lowered due to its low content, so that the foaming performance is decreased. In addition, since the adhesive layer formed using such a composition exhibits low strength, It is limited.

Aerogels : 1 to 10 wt%

When the content of the airgel in the refractory adhesive composition is more than 10% by weight, it is difficult to uniformly disperse in the composition due to its high content, resulting in a decrease in productivity. In addition, since the viscosity of the composition can be rapidly increased, the self-leveling limitations limit the formation of the adhesive layer to a uniform thickness when such a composition is used. In consideration of these points, it is necessary to limit the content of the airgel in the refractory adhesive composition to 10% by weight or less.

However, when the content is less than 1% by weight, the effect of imparting heat resistance by the aerogels is insignificant, so that the content is limited to 1% by weight or more.

Additives: Depending on the desired properties, the additive may be included in the remainder in the refractory adhesive composition.

Hereinafter, each component of the refractory adhesive composition provided in one embodiment of the present invention will be described in more detail.

First, the description of the airgel is as follows.

The aerogels are not limited to hydrophilic or hydrophobic. That is, the hydrophobicity or hydrophilicity of the aerogels does not affect the fire resistance, heat resistance, or foam performance of the refractory adhesive composition containing the hydrophobicity or hydrophilicity.

Specifically, a hydrophilic or hydrophobic silica aerogel may be used as the airgel, and hydrophilic or hydrophobic fumed silica may be used instead of the airgel.

Independently, the aerogels may be in the form of a powder, a granule, or a mixture thereof. In the case of the powder form, the average particle diameter of the aerogels is not particularly limited.

The binder will be described as follows.

As described above, the binder is not particularly limited as long as it can be foamed and expanded in a high-temperature environment (for example, a firebox).

For example, in a group including silicates, metamorphic silicates, potassium silicates, tetraethyl orthosilicate (TEOS), and tetramethyl orthosilicate (TMOS) And may include one selected, or two or more silicates.

The binder may also be in the form of a powder, a granule, or a mixture thereof. In the case of the powder form, the average particle diameter of the binder is not particularly limited.

The additives are described below.

The additive may be one selected from the group consisting of a surfactant, a surface smoothing agent, a water-resistant additive, and a combination thereof for imparting various functions or improving physical properties to the refractory coating composition.

The description of each additive is as follows.

First, when the binder is a silicate showing hydrophilicity and the aerogels are hydrophobic, it is necessary to further include the surfactant in order to improve dispersibility. That is, the surfactant may be a surfactant dispersant.

At this time, the surfactant may be active at a pH of 2 to 12. For example, the surfactant may be selected from the group consisting of polyalkylene oxide silane, sodium alkyl diphenyloxide disulfonate, polyoxyethylene alkylether sulfate, polyoxyethylene tri- Polyoxyethylene tridecyl ether sulfate and sodium alkyl diphenyloxide disulfonate, or a mixture of two or more selected from the group consisting of polyoxyethylene tridecyl ether sulfate and sodium alkyl diphenyloxide disulfonate.

In some cases, the surface leveling agent may be further included to improve the fluidity of the adhesive layer formed using the refractory adhesive composition. For example, the surface smoothing agent may be selected from the group consisting of amine oxide, alkyl carbohydrate esters, alkoxylated polysiloxanes, di-methyl polysiloxane, and poly (alkyl acrylate) alkyl acrylate, and the like.

In order to improve the water resistance of the refractory adhesive composition, a water resistance additive may be further included. That is, the other additives may be water resistance additives including at least one selected from the group consisting of calcium hydroxide, magnesium oxide, magnesium hydroxide, sodium carbonate, and montmorillonite.

In this case, the content of the water-resistant additive in the refractory adhesive composition may be less than 1% by weight. When the content of the additive is 1% by weight or more, it is difficult for the additive to be uniformly dispersed in the composition and the productivity is lowered.

This is because the first adhesive layer of the above composition is positioned between the first and second heat-insulating core members to provide a refractory sandwich panel which not only has excellent fire resistance and heat resistance, do.

Hereinafter, the composition of the refractory sandwich panel will be described in detail as described above.

Specifically, the first adhesive layer may be in the form of containing the binder, the foaming agent, and the water in the inner pores of the airgel, like the above-described composition. Accordingly, when the binder is foamed and expanded in a high temperature environment such as a fire or heat, the airgel containing the binder in the inner pores can be expanded and expanded, and the foam ratio and the foam density can be excellently expressed have.

As a result, when the core material (for example, the first heat-insulating core material) located outside the sandwich panel is exposed to fire or heat, the first adhesive layer positioned inside the first heat-insulating core is expanded and expanded, Layer, the first foam layer suppresses the diffusion of heat and the transfer of heat, and protects the core material (for example, the second heat-insulating core material) located inside the first adhesive layer and is generated by carbonization thereof (For example, smoke, noxious gas, etc.) that can be caused by the use of the gas.

At this time, the thickness of the first adhesive layer may be 500 탆 to 1 mm.

If the thickness of the first adhesive layer is less than 500 탆, the thickness thereof is too thin, and the fire resistance is difficult to expect. If it exceeds 1 mm, the coating layer is too thick, which may hinder the heat insulation.

The thickness of the first foam layer formed by foaming the first adhesive layer in the thickness range may be 5 to 20 mm and supports an excellent foaming ratio corresponding to 1000 to 2000 times greater thickness than that before foaming, The flame retardancy and heat resistance of the sandwich panel can be excellently expressed.

Depending on the thicknesses of the first and second adiabatic core members, the structure of the first adhesive layer may be different.

Specifically, when the thicknesses of the first insulating core material and the second heat insulating core material are respectively 5 to 30 mm, the structure of the first adhesive layer may be a single layer or a double layer.

Alternatively, when the thicknesses of the first insulating core material and the second heat insulating core material are each 30 to 50 mm or more, the structure of the first adhesive layer may be a three-layer or more multi-layer structure.

The sandwich panel may include: a first iron plate positioned on the outer surface of the first heat-insulating core; And a second adhesive layer positioned between the first adiabatic core and the first steel plate.

In the case of such a structure, the refractory sandwich panel can be secondarily foamed after the second adhesive layer and / or the third adhesive layer are primarily foamed upon exposure to heat or fire. By sequentially foaming the adhesive layers in this manner, the effect of protecting the heat-insulating core materials located inside the sandwich panel against fire or heat can be more excellent.

If the thicknesses of the second adhesive layer and the third adhesive layer are less than 500 탆, the thickness thereof is too thin and the fire resistance is difficult to expect. If each thickness is more than 1 mm, the coating layer is too thick and may adversely affect the heat insulation.

The thickness of the second adhesive layer in the thickness range and the thickness of the second foam layer and the third foam layer formed by foaming the third adhesive layer may be respectively 5 to 20 mm and may be increased by 1000 to 2000% And thus the excellent fire resistance and heat resistance of the sandwich panel can be exhibited.

The shapes of the first heat-insulating core material and the second heat-insulating core material are not particularly limited. For example, it may be a board shape.

Independently, the material of the first heat-insulating core and the second heat-insulating core is not particularly limited. For example, any one material selected from the group consisting of polyurethane, expanded polystyrene (EPS), extruded polystyrene (XPS), glass wool, mineral wool, &Lt; / RTI >

This corresponds to a method of manufacturing a fireproof sandwich panel having the above-mentioned excellent characteristics by a simple method of applying the refractory adhesive composition of the above-described composition to the first refractory adhesive composition.

Since the composition is as described above, each step of the method for manufacturing the refractory sandwich panel except the above will be described in detail.

This corresponds to the step of producing the refractory adhesive composition of the above-mentioned composition.

When the above limited range is satisfied, a first adhesive layer having a thickness of 500 mu m to 1 mm may be formed between the first and second heat-insulating core members. In other words, limiting the application amount of the first refractory adhesive composition per the area of the first adiabatic core to the above range is the same as the reason for limiting the thickness of the first adhesive layer to 500 탆 to 1 mm.

On the other hand, the step of laminating the second heat-insulating core material on the surface of the first refractory adhesive composition; Thereafter, it may be dried. Specifically, the time required for drying depends on the thickness of the first adhesive layer. For example, when the thickness of the first adhesive layer is 0.5 to 1 mm, 4 to 6 hours at room temperature and 1 to 2 hours at 60 ° C are required.

It is not necessary to apply a pressure during the drying and it is difficult to control the thickness of the first adhesive layer when pressure is applied.

Applying the first refractory adhesive composition between the first adiabatic core and the second adiabatic core to bond the first adiabatic core material and the second adiabatic core material; Thereafter, 70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And a remainder of an additive; preparing a second refractory adhesive composition; And adhering the first iron plate to the outer surface of the first heat-insulating core by applying the second refractory adhesive composition.

When the above limited range is satisfied, a second adhesive layer having a thickness of 500 탆 to 1 mm may be formed between the first adiabatic core and the first iron plate. In other words, limiting the application amount of the second refractory adhesive composition per the area of the first heat-insulating core to the above range is the same as the reason for limiting the thickness of the second adhesive layer to 500 탆 to 1 mm.

When the above limited range is satisfied, a third adhesive layer having a thickness of 500 mu m to 1 mm may be formed between the second heat-insulating core and the second steel plate. In other words, limiting the application amount of the third refractory adhesive composition per the area of the second heat insulating core to the above range is the same as the reason for limiting the thickness of the third adhesive layer to 500 탆 to 1 mm, which has been described above.

Hereinafter, preferred embodiments of the present invention and test examples therefor will be described. However, the following examples are only a preferred embodiment of the present invention, and the present invention is not limited to the following examples.

Example One

(1) Preparation of fire-resistant adhesive composition

First, an inorganic binder and an additive were mixed in a stirrer at 500 rpm for 10 minutes, an airgel was added thereto, and the mixture was mixed at 1000 rpm for 60 minutes to obtain a refractory adhesive composition (100 wt% %, The additive is 3% by weight in total, and the silica airgel powder is 3% by weight).

Specifically, the inorganic binder is a silicate resin (Na₂SiO₃, point of purchase: sheep Chemicals) used, and the additive is a surfactant, the (fluorine-based, point of purchase: Momentive), surface smoothing agent _{([(CH 3) 2 SiO} ] 3, Buyer: BYK) was used, and silica airgel powder (SiO, purchased from JIOS AEROGEL) was used as the airgel.

(2) Preparation of Refractory Sandwich Panels The following two types of refractory sandwich panels were prepared by applying the above-prepared refractory adhesive composition.

1) Form 1: As shown in Figure 1, two The above refractory adhesive composition was applied between the heat insulating core materials and bonded.

Each of the two heat insulating core materials was prepared by foaming a two-component polyurethane (RGF 3020) having a mixture of a main component and a curing agent in a weight ratio of 1: 1 to prepare a polyurethane foam. Then, the polyurethane foam was stretched by 300 mm Mm, and a thickness of 10 mm. Fig. 2 is a photograph of one surface of the heat insulating core material (as viewed from above). Fig.

The refractory adhesive composition was applied to one surface of one heat insulating core material and the amount thereof was 2.8 kg / m 2 per the surface area of the heat insulating core material. Another heat insulating core material was laminated on the surface of the refractory adhesive composition to prepare a sandwich panel of form 1.

Fig. 3 is a photograph of the side (taken from the side) of this type 1 sandwich panel. The thickness of the adhesive layer formed between the two heat insulating core materials was 1 mm.

2) Form 2: As shown in Fig. 4, the refractory adhesive composition was applied to both outer surfaces of the sandwich foam of the above-mentioned Form 1 to adhere the iron plates to each other.

The refractory adhesive composition was applied to both outer surfaces of the sandwich foam of Form 1, and its application amount was 2.8 kg / m 2 per the area of the heat insulating core. An iron plate was laminated on each of the surfaces to which the refractory adhesive composition was applied to prepare sandwich panels of form 2.

Figs. 5 and 6 are photographs of this type 2 sandwich panel taken at an oblique angle and side view. Fig. The thickness of the adhesive layer formed between the two heat insulating core materials was 1 mm, and the thickness of the two adhesive layers formed between the heat insulating core material and the steel plate was 1 mm.

Example 2 to 3

Except that the content of each of the raw materials (ie, binder, airgel, foaming agent, surfactant, surface smoothing agent, and other additives) was changed as shown in the following Table 1, Adhesive compositions were prepared and applied to the sandwich panels of Forms 1 and 2 respectively.

Comparative Example 1 and 2

Except that the content of each of the raw materials (ie, binder, airgel, surfactant, surface smoothing agent, and other additives) was changed as shown in Table 1 below, Were prepared and applied to sandwich panels of Forms 1 and 2, respectively.

For reference, when the refractory adhesive composition is prepared so that the content of the aerogels is 10 wt% or more in addition to the comparative examples 1 and 2, the viscosity of the composition increases due to the aerogels, and it is difficult to uniformly disperse the respective raw materials , There is a problem that the manufacturing cost is increased.

On the other hand, when the refractory adhesive composition is prepared in an amount of 70% by weight or less of the binder, the content of the other additives must be relatively increased, so that the viscosity of the composition is lowered so that it is difficult to form an adhesive layer by coating the composition, There was a problem.

division bookbinder Aerogels additive Surfactants Surface smoothing agent Other additives Example 1 93 3 One One 2 Example 2 90 6 One One 2 Example 3 95 One One One 2 Comparative Example 1 96 - One One 2 Comparative Example 2 60 3 One One 35

Note: In the above table, the content of each substance is expressed as% by weight based on 100 wt% of the total weight of the composition.

Test Example 1: Fire resistance evaluation

The sandwich foams and panels prepared in Example 1 were exposed to a fire extinguisher at 1000 to 1200 DEG C for 10 minutes using a gas torch to evaluate fire resistance.

Figs. 7 to 9 are photographs of a sandwich form of Form 1 exposed to a fire. Specifically, FIG. 7 is a photograph of the exposed surface, and FIG. 8 is a photograph of a side taken. FIG. 9 is a photograph of a form 1 sandwich foam cut to photograph both the exposed face and the unexposed face of the fire.

7 to 9, it is observed that the heat-insulating core material on the surface exposed to the firebox is carbonized, but the heat-insulating core material on the surface not exposed to the firebox is not carbonized, and the heat- It is observed that a foam layer is formed between the heat-insulating core materials which are not subjected to heat treatment.

As a result, the adhesive layer of the form 1 sandwich foam was foamed and transformed into the foam layer by the firearm, so that the fire extinguisher and the heat were shut off, thereby protecting the heat insulating core not exposed to the fire extinguisher.

The sandwich panel of the second aspect was also exposed to the fire as shown in Fig. Fig. 11 is a photograph of the exposed surface, and Fig. 12 is a photograph of a side taken.

10 to 12, it can be seen that the iron plate on the face exposed to the firebox is denatured by the firebox, but the iron plates on the face not exposed to the firebox as well as the heat insulation core materials located inside the iron plate are not carbonized, It is observed that a foam layer is formed between the iron plate and the heat-insulating core material exposed to the firebox, and the adhesive layer located between the two heat-insulating core materials is observed to remain unfoamed.

As a result, the adhesive layer positioned immediately below the steel plate exposed to the fire of the shape-2 sandwich panel by the firearm is primarily foamed and converted into the foam layer, whereby the fire and heat are shut off, Can be protected.

Furthermore, it can be inferred that, when exposed to firearms at a higher temperature or for a longer period of time, the adhesive layer positioned between the two insulating core materials can be secondarily foamed.

The sandwich panels of Examples 2 to 4 and Comparative Examples 1 to 3 were subjected to the same fire resistance evaluation as described above, and the results were recorded in Table 2 below. In Table 2, when the insulation core of the surface not exposed to the fire was protected, it was marked with o, and when it was not protected, it was marked with X.

division Fire resistance evaluation of sandwich panels Form 1 Form 2 Example 1 ○ ○ Example 2 ○ ○ Example 3 ○ ○ Comparative Example 1 X X Comparative Example 2 X X

Through the fire resistance evaluation, when the sandwich panel of Form 1 or 2 is manufactured by applying the refractory adhesive composition according to an embodiment of the present invention, it is excellent in fire resistance and heat resistance when exposed to fire, It is proved that cotton is prevented from carbonization and can reduce the secondary risk.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. As will be understood by those skilled in the art. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims

70 to 95% by weight of a binder;
1 to 10% by weight of an airgel; And
The balance being an additive;
Refractory adhesive composition.

The method according to claim 1,
In the airgel,
Lt; RTI ID = 0.0 > hydrophobic < / RTI > and hydrophilic silica aerogels.
Refractory adhesive composition.

The method according to claim 1,
In the airgel,
A powder form, a granule form, or a mixed form thereof,
Refractory adhesive composition.

The method according to claim 1,
Wherein the binder comprises:
One selected from the group consisting of silicates, metamorphic silicates, potassium silicates, tetraethyl orthosilicate (TEOS), and tetramethyl orthosilicate (TMOS) Or two or more silicates.
Refractory adhesive composition.

The method according to claim 1,
Preferably,
Surfactants, surface smoothing agents, water-resistant additives, and combinations thereof.
Refractory adhesive composition.

A first heat insulating core;
A second heat insulating core; And
And a first adhesive layer positioned between the first adiabatic core and the second adiabatic core,
Wherein the first adhesive layer comprises 70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And an additive of the remainder.
Fireproof sandwich panels.

The method according to claim 6,
Wherein the first adhesive layer comprises:
Wherein the first foam layer is foamed by heat or fire and converted into a first foam layer.
Fireproof sandwich panels.

8. The method of claim 7,
The thickness of the first adhesive layer is,
500 [mu] m to 1 mm,
Fireproof sandwich panels.

9. The method of claim 8,
The thickness of the first foam layer
5 to 20 mm,
Fireproof sandwich panels.

10. The method of claim 9,
The thicknesses of the first and second heat-
5 to 50 mm,
Fireproof sandwich panels.

11. The method of claim 10,
The structure of the first adhesive layer is not particularly limited,
A single layer, or a double layer,
Fireproof sandwich panels.

11. The method of claim 10,
The structure of the first adhesive layer is not particularly limited,
Layer structure of three or more layers,
Fireproof sandwich panels.

The method according to claim 6,
A first iron plate positioned on an outer surface of the first heat insulating core; And
And a second adhesive layer positioned between the first adiabatic core and the first iron plate,
Fireproof sandwich panels.

14. The method of claim 13,
A second steel plate positioned on an outer surface of the second heat insulating core; And
And a third adhesive layer positioned between the second adiabatic core and the second steel plate,
Fireproof sandwich panels.

15. The method of claim 14,
The second adhesive layer, and the third adhesive layer,
70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And an additive for the remainder.
Fireproof sandwich panels.

16. The method of claim 15,
The second adhesive layer, and the third adhesive layer,
Wherein the second foam layer and the third foam layer are foamed by heat or fire, respectively,
Fireproof sandwich panels.

16. The method of claim 15,
The thicknesses of the second adhesive layer and the third adhesive layer are, respectively,
500 [mu] m to 1 mm,
Fireproof sandwich panels.

18. The method of claim 17,
The thicknesses of the second foam layer and the third foam layer are, respectively,
5 to 20 mm,
Fireproof sandwich panels.

The method according to claim 6,
And the first and second heat insulating core members are respectively formed of a first insulating core member and a second insulating core member.
Wherein the substrate is a board shape,
Fireproof sandwich panels.

The method according to claim 6,
The first heat-insulating core and the second heat-
And is made of any one material selected from the group consisting of polyurethane, expanded polystyrene (EPS), extruded polystyrene (XPS), glass wool, mineral wool, and the like. ,
Fireproof sandwich panels.

70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And a remainder of an additive; preparing a first refractory adhesive composition; And
Applying the first refractory adhesive composition between the first and second heat insulating core members to bond the first and second heat insulating core members together.
Method of manufacturing refractory sandwich panels.

22. The method of claim 21,
70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; 1 to 5% by weight of an additive; And a remainder of an additive, wherein the step of preparing the first refractory adhesive composition comprises:
Preparing a mixture comprising the binder, the airgel, and the water; And
Adding the additive to the mixture, and stirring to obtain the first refractory adhesive composition.
Method of manufacturing refractory sandwich panels.

22. The method of claim 21,
Applying the first refractory adhesive composition between the first adiabatic core and the second adiabatic core to bond the first adiabatic core and the second adiabatic core,
Applying the refractory adhesive composition to one side of the first adiabatic core; And
And laminating the second heat-insulating core material on the first refractory adhesive composition application surface.
Method of manufacturing refractory sandwich panels.

24. The method of claim 23,
Applying the first refractory adhesive composition to one surface of the first insulating core material
The amount of the first refractory adhesive composition applied per area of the first heat-
1.4 to 2.8 kg / m < 2 >
Method of manufacturing refractory sandwich panels.

22. The method of claim 21,
Applying the first refractory adhesive composition between the first and second heat insulating core materials to bond the first and second heat insulating core materials; Since the,
70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And a remainder of an additive; preparing a second refractory adhesive composition; And
Applying the second refractory adhesive composition to an outer surface of the first adiabatic core to bond the first iron sheet;
Method of manufacturing refractory sandwich panels.

26. The method of claim 25,
Applying the second refractory adhesive composition to an outer surface of the first heat-insulating core material to bond the first iron plate,
Applying the second refractory adhesive composition to the outer surface of the first insulating core; And
And laminating the first iron plate on the second refractory adhesive composition application surface.
Method of manufacturing refractory sandwich panels.

27. The method of claim 26,
Applying the second refractory adhesive composition to the outer surface of the first insulating core material
The amount of the second refractory adhesive composition applied per area of the first heat-
1.5 to 2.8 kg / m < 2 >
Method of manufacturing refractory sandwich panels.

28. The method of claim 27,
Applying the second refractory adhesive composition to an outer surface of the first heat-insulating core to bond the first steel sheet; Since the,
70 to 95% by weight of a binder; 1 to 10% by weight of an airgel; And a remainder of an additive; preparing a third refractory adhesive composition; And
Applying the third refractory adhesive composition to an outer surface of the second heat insulating core material to bond the second steel sheet,
Method of manufacturing refractory sandwich panels.

29. The method of claim 28,
Applying the third refractory adhesive composition to the outer surface of the second heat insulating core material
The amount of the third refractory adhesive composition applied per area of the second heat-
1.4 to 2.8 kg / m < 2 >
Method of manufacturing refractory sandwich panels.