KR20200126617A - Eco-friendly foam pad with shell powder for fireproof filling structure and method for manufacturing the same - Google Patents

Abstract

The present invention provides an eco-friendly foam pad for a fireproof filling structure using shell powder and a manufacturing method thereof, wherein the eco-friendly foam pad for a fireproof filling structure using shell powder can improve flame retardant performance of products by using the shell powder and efficiently treat the shell powder that may cause marine environmental pollution. According to the present invention, the foam pad for a fireproof filling structure blocks a penetrating hole provided on a fireproof division body of a building. The foam pad for a fireproof filling structure includes polyol, expanded graphite, and shell powder. The foam pad for a fireproof filling structure further includes at least one inorganic filler selected from aluminum hydroxide (Al(OH)_3) and magnesium hydroxide (Mg(OH)_2).

Description

Eco-friendly fireproof filling structure foam pad using shell powder and its manufacturing method {ECO-FRIENDLY FOAM PAD WITH SHELL POWDER FOR FIREPROOF FILLING STRUCTURE AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a foam pad for a fire-resistant filling structure, and more particularly, to a foam pad for an eco-friendly fire-resistant filling structure using shell powder that can improve the flame-retardant performance of a product by utilizing shell powder, and a manufacturing method thereof.

With the development of industry, the construction of large-sized and high-rise buildings is increasing for the purpose of efficient space utilization and high added value creation. In the construction of these buildings, the limitations of public fire fighting power are clear, and self-reliance of its own disaster prevention system is an important required performance.

In extinguishing a fire, the mechanical solution like a sprinkler is called an active system, and a method through architectural solutions such as flame retardant, fire compartment, and fireproof structure is called a passive system. Compared to the active system, the passive system is a more fundamental approach to the occurrence and suppression of fires, and it suppresses the spread and spread of ignition, fire through building materials, and saves a certain amount of time required for evacuation from toxic gases, smoke, and heat. It can be secured to prevent personal injury.

All buildings contain electrical and plumbing facilities, and there is a through hole to connect these facilities. The structure that seals the through hole of the fire protection compartment that can become a passage for such flame expansion is called a fireproof charging structure. The fireproof charging structure is to prevent the rapid spread of flames or toxic gases to adjacent rooms or floors in the event of a fire in the building, and the gaps between the horizontal and vertical facility penetrations of the fire protection division, joints and curtain walls and floors It plays a role of preventing the spread of fire through.

On the other hand, in buildings such as newly constructed apartments, factories, hospitals, and various buildings in Korea, a fireproof charging structure that seals through the pipes (PVC, STEEL PIPE, DUCT, CABLE) between fire compartments to maintain the fire compartment of the building in case of fire. Must be secured.

Currently, various types of refractory charging structures have been developed, and research and development to improve the performance of the refractory charging structures are continuing.

Registered Patent Publication No. 1782410 (2017. 09. 27.)

The present invention was conceived in consideration of the above points, and using the shell powder to improve the flame-retardant performance of the product, and to efficiently treat the shell that may cause marine environmental pollution. It is an object to provide an eco-friendly fireproof filling structure foam pad and a manufacturing method thereof.

The foam pad for a fire-resistant filling structure according to the present invention for solving the above-described object is a foam pad for a fire-resistant filling structure for blocking a through hole provided in a fire protection compartment of a building, and includes polyol, expanded graphite, and shell powder. Including, but further comprises at least one inorganic filler selected from aluminum hydroxide (Al(OH) ₃ ) and magnesium hydroxide (Mg(OH) ₂ ).

The foam pad for a fireproof filling structure according to the present invention may contain 20 to 80 parts by weight of the shell powder based on 100 parts by weight of the polyol.

The foam pad for refractory filling structure according to the present invention may contain at least one curing agent selected from polymeric methylene diphenyl diisocyanate (MDI), monomeric methylene diphenyl diisocyanate (MDI), modified MDI and Toluene diisocyanate (TDI) I can.

The foam pad for a fireproof filling structure according to the present invention may be formed in a square block shape having a thickness of 30mm to 100mm.

The foam pad for a fire-resistant filling structure according to the present invention is preferably a density of 100kg / m ³ ~ 400kg / m ³ .

On the other hand, the method of manufacturing a foam pad for a fireproof filling structure according to the present invention for solving the above-described object is selected from (a) aluminum hydroxide (Al(OH) ₃ ) and magnesium hydroxide (Mg(OH) ₂ ). Preparing a polyol mixture by mixing at least one inorganic filler, polyol, and expanded graphite; (b) forming a refractory composition by mixing shell powder and a hardener in the polyol mixture prepared in step (a); (c) molding and curing the refractory composition formed in step (b) into a mold; And (d) separating the molded article cured in the mold from the mold.

In the step (b), the refractory composition may contain 20 to 80 parts by weight of the shell powder based on 100 parts by weight of the polyol.

In step (b), the curing agent may be selected from polymeric methylene diphenyl diisocyanate (MDI), monomeric methylene diphenyl diisocyanate (MDI), modified MDI, and toluene diisocyanate (TDI).

In the step (c), the molded product may be formed into a rectangular block shape having a thickness of 30 mm to 100 mm.

In the step (c), the refractory composition may be molded and cured while pressing so as to suppress expansion in the mold.

In the step (c), the refractory composition may be molded and cured in a state capable of natural expansion in the mold.

The foam pad for the fire-resistant filling structure according to the present invention is inserted into the through hole of the fire protection compartment and expands by receiving heat in the event of a fire, so that the through hole can be kept in a more tightly closed state, and flames and smoke can be transmitted to other spaces. It can prevent it from spreading.

In addition, the foam pad for a fire-resistant filling structure according to the present invention suppresses excessive expansion by heating the shell powder contained in the polyol mixture and increases the density of the product. Accordingly, in the event of a fire, the through hole of the fire compartment can be more stably sealed.

In addition, according to the present invention, by using eco-friendly shell powder as a flame retardant, the amount of use of other inorganic fillers can be relatively reduced, and there is an effect of reducing cost.

In addition, according to the present invention, there is an effect of reducing the secondary damage caused by the harmful gas by reducing the amount of harmful gas generated in the case of a fire in the foam pad for a fire-resistant filling structure containing environmentally friendly shell powder.

In addition, according to the present invention, since the shell powder can be recycled, it can also contribute to reducing the damage of marine environment pollution caused by the shell.

1 is a photograph showing a foam pad for a fireproof filling structure according to an embodiment of the present invention.
2 is a view showing a state in which a foam pad for a fireproof charging structure according to an embodiment of the present invention is installed in a fireproof section of a building.
Figure 3 shows the state before the fire-resistant filling structure test using a fire-resistant filling structure foam pad according to the test example of the present invention.
Figure 4 shows the state after the fire-resistant filling structure test using a fire-resistant filling structure foam pad according to the test example of the present invention.
Figure 5 shows the temperature data before the refractory filling structure test of the fireproof filling structure foam pad according to the test example of the present invention. Figure 6 is the temperature data after the refractory filling structure test of the refractory filling structure foam pad according to the test example of the present invention Is shown.
7 is a step-by-step process diagram illustrating a method of manufacturing a foam pad for a fireproof filling structure according to an embodiment of the present invention.
8 to 11 show some processes of a method of manufacturing a foam pad for a fireproof filling structure according to an embodiment of the present invention.

Hereinafter, a foam pad for an eco-friendly fireproof filling structure using shell powder according to the present invention and a manufacturing method thereof will be described in detail with reference to the drawings.

The foam pad 100 for a fire-resistant filling structure according to an embodiment of the present invention is a through hole formed for installation of a pipe or the like in the fire compartment 10 provided between the floor and the floor of the building, or between the wall and the wall. It is installed in 12) and used to seal the through hole 12.

The through hole 12 formed in the fire compartment 10 of the building becomes a passage through which flames and smoke rapidly spread in the event of a fire, resulting in the destruction of the fire compartment 10, significantly reducing the damage of the fire. Can be increased. Therefore, it is very important to completely seal the through hole 12 formed in the fire compartment 10 when constructing a building. The foam pad 100 for a fireproof charging structure according to an embodiment of the present invention may be installed in the through hole 12 to shield the through hole 12 and prevent the spread of flame and smoke when a fire occurs.

The foam pad 100 for a fireproof charging structure according to an embodiment of the present invention is formed in a square block shape as shown in FIG. 1 to shield the through hole 12 of the fire protection compartment 10, polyol and expansion Including graphite, inorganic fillers, hardeners, and shell powder, the through hole 12 can be stably sealed by expanding when the temperature increases during a fire.

As known, the polyol constituting the foam pad 100 for a fire-resistant filling structure according to an embodiment of the present invention has two or more hydroxyl groups (Hydroxyl Group, -OH) or amine group (Amine Group,-NH2) in the molecule. As a material obtained by reacting an initiator such as a multifunctional alcohol or an aromatic amine with propylene oxide (PO) or ethylene oxide (EO) under appropriate conditions, it is used in the production of polyurethane together with isocyanate. It is the raw material used. Polyols are largely classified into polyether polyols and polyester polyols, and may be appropriately selected and mixed with other constituent materials when manufacturing the foam pad 100 for a fireproof filling structure.

Expanded graphite can insert atoms or small molecules between layers due to the layered structure of graphite.When sulfur or nitrogen compounds are injected and heated between layers, the layer is separated like an accordion and particles expand several hundred times. Has characteristics. The foam pad 100 for a fireproof filling structure according to an embodiment of the present invention contains expanded graphite, so that when a fire occurs and the temperature rises, the foam pad 100 expands to increase the sealing performance of the through hole 12.

Various flame retardants can be used as the inorganic filler. For example, as an inorganic filler, at least one selected from aluminum hydroxide (Al(OH) ₃ ), magnesium hydroxide (Mg(OH) ₂ ), antimony trioxide (Sb ₂ O ₃ ), ammonium polyphosphate, and melamine polyphosphate Flame retardants can be used.

In addition, as the flame retardant, at least one phosphorus-based flame retardant selected from TEP, TCEP and TCPP, or various other flame retardants may be used as inorganic fillers.

The inorganic filler is mixed with the expanded graphite described above in the liquid polyol to form a liquid polyol mixture.

The curing agent is added to the liquid polyol mixture and serves to cure the polyol mixture. As the hardener, at least one selected from polymeric methylene diphenyl diisocyanate (MDI), monomeric methylene diphenyl diisocyanate (MDI), modified MDI, and toluene diisocyanate (TDI) may be used.

The shell powder may be contained in the polyol mixture to increase the density of the foam pad 100 for a fireproof filling structure. In addition, the shell powder suppresses excessive expansion of the fire-resistant filling structure foam pad 100 when the foam pad 100 is heated and expands under the action of the expanded graphite. Accordingly, the foam pad 100 for a fireproof filling structure including shell powder can maintain a more stable sealing state of the through hole 12 of the fire compartment 10 when a fire occurs. Shell powder may be used as a pulverized shell of various shellfish such as oyster or cockle.

The shell powder is mixed with a polyol mixture together with a curing agent to form a fireproof composition constituting the foam pad 100 for a fireproof filling structure. Calcium carbonate, the main component of shell powder, is an excellent flame retardant component, and shell powder is an eco-friendly material that can replace other flame retardants. Since the fireproof composition includes an eco-friendly shell powder, the amount of use of other inorganic fillers constituting the fireproof composition can be relatively reduced, and the foam pad 100 for an eco-friendly fireproof filling structure can be manufactured. And by using relatively inexpensive shell powder, it is possible to obtain the effect of cost reduction by reducing the amount of use of relatively expensive inorganic fillers. In addition, the foam pad 100 for a fire-resistant filling structure formed of a fire-resistant composition including environmentally friendly shell powder has an effect of reducing secondary damage caused by harmful gases by reducing the amount of harmful gas generated when a fire occurs.

Shell powder is preferably contained in 20 to 80 parts by weight based on 100 parts by weight of the polyol. If the content of the shell powder is less than 20 parts by weight, the effect of increasing the density of the foam pad 100 for the fire-resistant filling structure according to the use of the shell powder, reducing the cost, and reducing the amount of harmful gas is insignificant, and there is no benefit of using the shell powder. On the other hand, when the content of the shell powder exceeds 80 parts by weight, there is a problem that the expansion of the foam pad 100 for a fireproof filling structure is excessively suppressed.

Shell powder can be obtained by washing, drying and pulverizing shells such as oysters and cockles. That is, the shell is put into a washing device to remove salt and contaminants from the shell, and then dried to secure a clean shell. In addition, the washed and dried shells are pulverized with a grinder and filtered to obtain shell powder that can be used in the fireproof composition.

Currently, oyster shells, which are currently treated as industrial waste, reach 200,000 tons per year, causing serious problems in marine environmental pollution, and high treatment costs are incurred to treat them. The foam pad 100 for a fire-resistant filling structure according to an embodiment of the present invention contains shell powder as a major component, and thus may contribute to reducing the damage of marine environmental pollution caused by the shell.

FIG. 1 is a photograph showing a foam pad for a fireproof charging structure according to an embodiment of the present invention, and FIG. 2 shows a state in which the foam pad for a fireproof charging structure according to an embodiment of the present invention is installed in a fire protection compartment of a building. .

As shown in the drawing, the foam pad 100 for a fireproof filling structure according to an embodiment of the present invention may be manufactured in a square block shape and installed in the through hole 12 of the fire compartment 10. The foam pad 100 for a fireproof filling structure may be finished with a fireproof cylinder or the like in a state inserted into the through hole 12 to close the through hole 12.

When a fire occurs in any one of the two spaces divided by the fire compartment 10, the foam pad 100 for the fireproof filling structure expands by receiving heat and closes the through hole 12 more firmly. By maintaining the state, you can prevent the spread of flames and smoke to other spaces.

As a result of manufacturing and experimenting with the foam pad 100 for a fire-resistant filling structure as shown in FIG. 1, the foam pad 100 for a fire-resistant filling structure according to the present invention was blocked from fire for 1 to 2 hours at 100 to 1100 degrees compared to room temperature. It was found that the initial temperature of the unheated surface did not reach more than +180 degrees.

The effect of the present invention has been confirmed in the fire-resistant filling structure test of Korea Institute of Construction Living Environment Test.

3 is a view showing a state before the test of the refractory filling structure using a foam pad for a refractory filling structure according to the test example of the present invention, Figure 3 (a) is a view above the non-heating surface, Figure 3 (b) is a heating surface side This is the appearance of.

In this test, a through hole of 1100 mm x 200 mm and a depth of 150 mm was formed in the fire compartment, and a 75 mm-thick fire-resistant charging structure foam pad 100 in the form of a square block was installed in the through hole in two layers, and the maximum temperature was 1049. After heating the road for 2 hours, the change of cables installed on the non-heated side was examined.

4 is a view showing a state after a refractory filling structure test using a foam pad for a refractory filling structure according to a test example of the present invention, Figure 4 (a) is a view above the non-heating surface, Figure 4 (b) is a heating surface side This is the appearance of.

As can be seen in Figure 4, after heating at a maximum temperature of 1049 for 2 hours, the cable on the heating side is completely burned out due to the high-temperature flame, whereas the flame does not propagate on the non-heated side, so the cable is not burned and is You can see that it is maintaining.

These test results can also be confirmed as specific data through the measured temperature on the non-heated surface before and after the test.

Figure 5 shows the temperature data before the fire-resistant filling structure test of the fire-resistant filling structure foam pad according to the test example of the present invention, Figure 6 is the temperature data after the fire-resistant filling structure test of the fire-resistant filling structure foam pad according to the test example of the present invention Is shown.

5 and 6, data 1, 2, 11, and 12 represent the cable temperature on the non-heating side, and data 3 to 9 and data 13 to 19 are the temperature of the non-heating side of the foam pad. And Nos. 10 and 20 indicate the surface temperature of the cable tray on the unheated side.

As shown in FIG. 6, at a maximum temperature of 1049 degrees for 2 hours, the cable temperature on the non-heating side was 146.4 degrees, and the temperature on the non-heating side of the foam pad was 92.8 degrees, and the cable tray surface temperature on the non-heating side was The highest was 116.8 degrees.

This fireproof performance satisfies the conditions as a fireproof filling structure.

When manufacturing the foam pad 100 for a fireproof filling structure according to the present invention in the form of a square block as shown, the thickness is preferably 30mm ~ 100mm. When the thickness of the fireproof filling structure foam pad 100 is less than 30mm, it is difficult to ensure the fire blocking performance of the fireproof filling structure foam pad 100, so that the reliability of the product may be degraded. On the other hand, when the thickness of the foam pad 100 for the fire-resistant filling structure exceeds 100 mm, the effect of improving the fire blocking performance according to the thickness increase is not great, whereas the manufacturing cost increases excessively with increasing thickness, which is not preferable. .

In addition, the density of the foam pad 100 for the fire-resistant filling structure is good to have a value of 100kg / m ³ ~ 400kg / m ³ . When the density of the foam pad 100 for the fireproof filling structure is less than 100kg/m ³ , the shape of the foam pad 100 for the fireproof filling structure is easily deformed when a fire occurs, resulting in poor fireproof performance. On the other hand, if the density of the foam pad 100 for the fireproof filling structure exceeds 400kg/m ³ , the weight becomes heavy, and there may be a problem that the foam pad 100 for the fireproof filling structure does not expand smoothly when a fire occurs. It is not desirable.

Hereinafter, a method of manufacturing a foam pad for a fireproof filling structure according to an embodiment of the present invention will be described.

7 is a process chart showing step-by-step a method of manufacturing a foam pad for a fireproof filling structure according to an embodiment of the present invention, and FIGS. 8 to 11 are some of the manufacturing methods of a foam pad for a fireproof filling structure according to an embodiment of the present invention. It shows the process.

As shown in the drawings, the method of manufacturing a foam pad for a fireproof filling structure according to an embodiment of the present invention includes a polyol mixture forming step (S11), a refractory composition forming step (S12), a molding step (S13), and a curing step. (S14) and a demolding step (S15).

First, a polyol mixture is formed in the polyol mixture forming step (S11). As described above, a polyol mixture may be formed by mixing expanded graphite and an inorganic filler in polyol. In this step, the expanded graphite and the inorganic filler are added to the liquid polyol and stirred evenly to prepare a liquid polyol mixture. The inorganic filler added to the polyol is selected from aluminum hydroxide (Al(OH) ₃ ), magnesium hydroxide (Mg(OH) ₂ ), antimony trioxide (Sb ₂ O ₃ ), ammonium polyphosphate, melamine polyphosphate, and phosphorus-based flame retardants. Flame retardants, or various other flame retardants may be used.

Next, in the refractory composition forming step (S12), a curing agent and shell powder are mixed with a liquid polyol mixture to form a refractory composition. In this step, a refractory composition having flowability can be made by adding a curing agent and shell powder to the liquid polyol mixture and stirring evenly. The curing agent contained in the polyol mixture may be selected from polymeric methylene diphenyl diisocyanate (MDI), monomeric methylene diphenyl diisocyanate (MDI), modified MDI, and toluene diisocyanate (TDI). When the curing agent and the shell powder are mixed in the polyol mixture, curing proceeds, so the step of forming the refractory composition (S12) is preferably performed immediately before the forming step (S13).

Next, in the molding step (S13), the refractory composition 200 is put into the molding mold 300 and molded into a predetermined shape. As shown in FIG. 8, by injecting an appropriate amount of the fireproof composition 200 into the mold 300, the fireproof composition 200 may be molded into a shape corresponding to the inner shape of the mold 300. The refractory composition 200 may expand naturally in the molding mold 300.

Next, the refractory composition 200 injected into the mold 300 in the curing step (S14) is cured. The curing step (S14) may be performed at room temperature. In a low temperature environment such as winter season, the refractory composition 200 may not be smoothly cured. In the curing step (S14), the curing temperature is preferably maintained at about 20°C to 25°C.

The refractory composition 200 injected into the molding mold 300 while passing through the curing step (S14) is cured into a molded product 400 having a shape corresponding to the inner shape of the molding mold 300 as shown in FIG. 9. .

Next, as shown in FIG. 10 in the demolding step (S15), the molded product 400 cured in the mold 300 is separated from the mold 300.

Thereafter, the foam pad 100 for the fire-resistant filling structure may be completed by post-treatment such as removing foreign substances from the molded product 400 separated from the mold 300 or removing unnecessary protruding portions.

In the method of manufacturing a foam pad for a fire-resistant filling structure according to the present invention, the forming step (S13) and the curing step (S14) are as shown in FIG. 9, wherein the refractory composition 200 is naturally expandable in the molding mold 300. Can be made in the state.

In addition, the molding step (S13) and the curing step (S14) may be performed under a condition in which the refractory composition 400 is pressed so as to suppress expansion in the molding mold 300. In this case, as shown in FIG. 11, the refractory composition 200 contained in the molding mold 300 by covering the pressing member 500 on the open upper part of the molding mold 300 is pressed with the pressing member 500 (200) can be molded and cured to have a higher density.

The present invention has been described with a preferred example, but the scope of the present invention is not limited to the form described and illustrated above.

For example, in the drawings, it is shown that the foam pad 100 for a fireproof filling structure according to the present invention has a rectangular block shape, but the foam pad for a fireproof filling structure has various other shapes depending on the shape of the through hole of the fireproof compartment to be applied. can be changed.

Above, the present invention has been shown and described in connection with a preferred embodiment for illustrating the principle of the present invention, but the present invention is not limited to the configuration and operation as shown and described as such. Rather, it will be well understood by those skilled in the art that many changes and modifications may be made to the present invention without departing from the spirit and scope of the appended claims.

100: foam pad for fire-resistant filling structure 200: fire-resistant composition
300: mold 400: molding
500: pressure member

Claims (11)

As a fireproof filling structure foam pad to block the through hole provided in the fire protection compartment of a building,
Including polyol, expanded graphite, and shell powder,
Aluminum hydroxide (Al(OH) ₃ ) and magnesium hydroxide (Mg(OH) ₂ ) A foam pad for a fire-resistant filling structure, characterized in that it further comprises at least one inorganic filler selected from.
The method of claim 1,
Foam pad for a fire-resistant filling structure, characterized in that 20 to 80 parts by weight of the shell powder is contained based on 100 parts by weight of the polyol.
The method of claim 1,
Polymeric MDI (Polymeric methylene diphenyl diisocyanate), Monomeric MDI (Monomeric methylene diphenyl diisocyanate), modified MDI, and TDI (Toluene diisocyanate).
The method of claim 1,
Foam pad for fire-resistant filling structure, characterized in that consisting of a square block shape having a thickness of 30mm to 100mm.
The method of claim 1,
Foam pad for fire-resistant filling structure, characterized in that the density is 100kg / m ³ ~ 400kg / m ³ .
(a) preparing a polyol mixture by mixing at least one inorganic filler selected from aluminum hydroxide (Al(OH) ₃ ) and magnesium hydroxide (Mg(OH) ₂ ), polyol, and expanded graphite;
(b) forming a refractory composition by mixing shell powder and a hardener in the polyol mixture prepared in step (a);
(c) molding and curing the refractory composition formed in step (b) into a mold; And
(d) separating the molded product cured in the molding mold from the molding mold; a method of manufacturing a foam pad for a fireproof filling structure comprising: a.
The method of claim 6,
In the step (b), the fire-resistant composition is a method of manufacturing a foam pad for a fire-resistant filling structure, characterized in that 20 to 80 parts by weight of the shell powder is contained based on 100 parts by weight of the polyol.
The method of claim 6,
In the step (b), the curing agent is selected from polymeric methylene diphenyl diisocyanate (MDI), monomeric methylene diphenyl diisocyanate (MDI), modified MDI, and toluene diisocyanate (TDI). Method of manufacturing.
The method of claim 6,
In the step (c), the method of manufacturing a foam pad for a fireproof filling structure, characterized in that the molding is formed into a square block shape having a thickness of 30mm to 100mm.
The method of claim 6,
In the step (c), the method of manufacturing a foam pad for a refractory filling structure, characterized in that the refractory composition is molded and cured while pressing so as to suppress expansion in the mold.
The method of claim 6,
In the step (c), the method of manufacturing a foam pad for a fire-resistant filling structure, characterized in that forming and curing the refractory composition in a state capable of natural expansion in the mold.

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