KR20150096136A - Fire door using aluminum foamed metal - Google Patents

Abstract

The present invention relates to a fire door using aluminum foamed metal. the fire door according to an embodiment of the present invention has an effect of superior soundproof and insulation. the door manufactured by magnesium foam metal of incombustible material which improves the high-temperature-resistant and impact resistance, eco-friendly also a poisonous gas not proceed from the fire door in case of fire.

Description

{Fire door using aluminum foamed metal}

The present invention relates to a fire door using an aluminum foaming metal.

The doors used to open and close the entrance to the living room and the room inside or outside the ship, the warship or the building are generally made of glass, wood or metal, but the wood is vulnerable to heat, There is a problem that it can not be blocked. In the case of glass, there is a problem that it is refractory but it is expensive and fragile. Therefore, there is a problem that care must be taken in handling. In case of metal, soundproofing is very weak. Particularly, limited space such as a ship is seriously damaged in case of fire, and therefore, a fire door that can prevent the spread of fire is desperately needed.

Generally, steel plates widely used as building materials are widely used because they are easy to construct and cheap, but they are low in heat insulation, and are used as an organic insulating material, an inorganic insulating material, or a sound absorbing material such as a fiber material or a foamed synthetic resin. However, this not only does not rot at the time of disposal but also contains a harmful substance to the human body, which causes a problem of environmental pollution. In addition, when a fire occurs, it burns out by heating the panel.

Accordingly, there is a strong demand for a fireproof door which is excellent in sound insulation and heat insulation effect, which is incombustible and does not burn when a fire occurs so that no toxic gas is generated, sound absorption is possible, and noise can be blocked.

KR 10-2012-0012269

The inventors of the present invention have found that when a fire door using an aluminum foamed metal as a non-combustible material is used, the heat resistance and impact resistance are improved, the environmentally friendly, toxic gas is not generated when a fire occurs, And completed the present invention.

Accordingly, the present invention provides a fire door using aluminum foamed metal.

In order to achieve the above object,

The present invention

Laminating aluminum foamed metal, aramid fiber and carbon fiber to produce a core inside the fire door; And inserting the inner core of the fire door between the steel panel and joining the core.

Further, the present invention provides a fire door made by the above manufacturing method.

Hereinafter, the present invention will be described in detail.

The present invention relates to a method for producing a core of a fireproof door by laminating aluminum foamed metal, aramid fiber and carbon fiber, And inserting the inner core of the fire door between the steel panel and joining the core.

The manufacturing method may further include cutting aluminum foamed metal, aramid fiber, and carbon fiber into a fire door size.

When the aramid fiber and the carbon fiber are laminated in addition to the aluminum foamed metal, which is a noncombustible material, as the internal core material of the fire door, the fireproof door is installed in the opening to prevent expansion and combustion of the fire. , Sound insulation and heat insulation are excellent.

The core inside the fire door is preferably laminated in the order of aramid fiber / carbon fiber / aluminum foamed metal / carbon fiber / aramid fiber, and aramid fiber / aramid fiber / carbon fiber / carbon fiber / aluminum foamed metal / carbon fiber / carbon fiber / Aramid fiber / aramid fiber in this order.

The core in the fire door is preferably heated by heating the inner core of the fire door, which is laminated at 90-110 ° C for 1 to 3 hours under vacuum, and heating the core inside the fire door at 100 ° C for 2 hours .

Further, the present invention provides a fire door made by the above manufacturing method.

The fire door using the aluminum foamed metal exhibits excellent bending strength and compressive strength and has an effect of exhibiting an extremely low thermal conductivity of 0.14 to 0.3 W / mK at 200 to 600 ° C.

 The fire door according to the present invention is manufactured using an aluminum foamed metal, which is a nonflammable material, so that it has improved high temperature resistance and impact resistance, is environmentally friendly, does not generate toxic gas when a fire occurs, and has excellent sound insulation and heat insulation.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a core inside a fire door.
2 is a diagram showing a schematic view of the entire fire door.
Fig. 3 is a diagram showing the production drawings (a) and (b) of the fire door.
4 is a graph showing a compression graph according to a strain (%).
5 is a view showing a shape of a compression specimen according to a strain (%).
6 is a diagram showing an image of a specimen for evaluating the bending strength.
7 is a view showing an image of a test apparatus for evaluating the bending strength.
Fig. 8 is a diagram showing the result of bending strength evaluation. Fig.
Fig. 9 is a view showing an image of a specimen having completed the bending strength evaluation. Fig.
10 is a diagram showing a macrostructure image of a deformed portion for (a) an aramid / carbon / foamed metal, and (b) a steel plate / aramid / carbon / foamed metal specimen during bending strength evaluation.
11 is a diagram showing the evaluation results of peeling properties for each specimen.
Fig. 12 shows photographs before and after peeling property evaluation. Fig.
13 is a view showing an image of a specimen prepared for evaluation of sound absorption / sound insulation characteristics.
14 is a diagram showing the results of evaluation of (a) sound insulation and (b) sound absorption characteristics for aluminum foamed metal.
Fig. 15 is a diagram showing the results of evaluation of (a) sound insulation and (b) sound absorption characteristics with respect to the aramid / carbon / foamed metal.
16 is a diagram showing the results of evaluation of (a) sound insulation and (b) sound absorption characteristics for a foamed metal / steel plate.
17 is a diagram showing the results of evaluation of (a) sound insulation and (b) sound absorption characteristics for iron plate / aramid / carbon / foamed metal.
18 shows the results of thermal conductivity characteristics evaluation at 200 ° C for (a) iron plate, (b) foamed metal, and (c) foam metal / carbon / aramid / steel plate, and (d) Fig. Here, T1 denotes the inside of the panel, and T2 denotes the outside of the panel.
19 is a graph showing the results of thermal conductivity characteristics evaluation at 400 DEG C for (a) an iron plate, (b) a foaming metal, and (c) a foam metal / carbon / aramid / iron plate, and (d) Fig. Here, T1 denotes the inside of the panel, and T2 denotes the outside of the panel.
20 is a graph showing the results of thermal conductivity characteristics evaluation at 600 ° C for (a) an iron plate, (b) a foaming metal, and (c) a foamed metal / carbon / aramid / iron plate, and (d) Fig. Here, T1 denotes the inside of the panel, and T2 denotes the outside of the panel.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided only for the purpose of easier understanding of the present invention, and the present invention is not limited by the examples.

EXAMPLES Example 1 Preparation of fire door using foamed metal

First, aluminum foamed metal, aramid fiber, and carbon fiber were alighted to fit the door size. Then, the lower layer laminated in the order of aramid / aramid / carbon / carbon was prepared by adhering with a resin, and the aluminum foaming metal was placed thereon and surrounded with a heat-resistant film, followed by pressurization and heating at 100 ° C for 2 hours under vacuum. After heating, the mixture was sufficiently cooled, and then an upper layer laminated in the order of aramid / aramid / carbon / carbon was placed on the opposite side in order to laminate the composite fibers, and the mixture was pressurized and heated at 100 ° C for 2 hours under vacuum. After heating, the interior of the fire door was sufficiently cooled to prepare a core. A schematic view of the inner core of the fire door produced above is shown in Fig.

Thereafter, a fire door of a density of 0.67 g / cm < 3 > was produced by inserting and welding the core inside the fire door between the prepared steel panel.

A schematic view of the entire fire door is shown in Fig. 2, and (a) and (b) of the fire door are shown in Fig.

Experimental Example 1. Characteristic Evaluation of Fireproof Door

1-1. Evaluation of compression characteristics

The compressive evaluation was carried out with two types of specimens of (1) pure aluminum foam metal of horizontal, vertical, and height 3 cm and (2) aramid fiber, carbon fiber and steel plate bonded to aluminum foam metal. Here, a crosshead speed of 3 mm / min was performed using a universal material tester (UTM, Shimadzu-10).

The compressive strength according to the strain (%) is shown in Table 1, the compression graph is shown in FIG. 4, and the shape of the compression specimen is shown in FIG.

As shown in Table 1 and Fig. 4, it can be seen that the strength of the aramid fiber, the carbon fiber, and the specimen bonded with the iron plate is higher than that of pure foamed metal.

1-2. Evaluation of bending strength

In the present invention, three specimens were prepared to evaluate the bending strength. First, the foamed metal was cut using a water jet (SJA-1515) at a size of 5 cm in length, 35 cm in length, and 3.5 cm in height, and the aramid fiber and carbon fiber were cut in accordance with this size and then bonded using an adhesive resin .

The specimens were prepared in accordance with the order of lamination: (1) aramid / carbon / foamed metal / carbon / aramid, (2) steel plate / aramid / carbon / foamed metal / carbon / aramid / steel plate, and (3) Carbon was prepared by laminating. Further, after the foaming metal was pressure-bonded, the composite panel as described above was prepared and evaluated.

An image of the specimen for evaluating the bending strength according to the above manufacturing method is shown in Fig.

The bending test was carried out at a bending speed of 3 mm / min. The distance between the pedestals was 100 mm. The bending test was carried out with reference to KS B 0804, and the test apparatus was prepared as shown in FIG.

The evaluation results of the bending strength are shown in Table 2 and Fig.

As shown in Table 2 and FIG. 8, a composite panel in which a composite fiber and a stainless steel plate were bonded to each other showed no breakage and continued deformation. In addition, it can be seen that the specimen bonded to the stainless steel plate has higher bending strength than the specimen having only the foamed metal, aramid and carbon fiber, and shows a much higher strength when added to the strength of each material there was. It was confirmed that foamed metal which is in pressure contact with general foamed metal exhibits higher bending strength.

The specimen after the evaluation of the bending strength is shown in Fig. 9, and the macrostructure of the deformed portion was observed in the bending evaluation of (a) the aramid / carbon / foamed metal and (b) the iron / aramid / carbon / An image is shown in Fig. The compression ratio is calculated by macro-structure, and the foamed metal is compressed by about 60%.

1-3. Evaluation of peeling properties

In order to evaluate the bonding properties of foamed metal, aramid fiber, carbon fiber, and stainless steel plate, fire extinguishing door materials were peeled off using a universal joint. The bonding test was carried out between the aramid fiber and the stainless steel plate, and between the foamed metal and the carbon fiber, and the strength was measured.

First, the foamed metal was cut into a size of 5 cm in width, 30 cm in length, and 3.5 cm in height, and the aramid fiber, the carbon fiber, and the stainless steel plate were cut to a size of 5 cm in width and 35 cm in length, Respectively.

The specimens were prepared by laminating in order of (1) aramid / carbon / foamed metal / carbon / aramid, and (2) iron plate / aramid / carbon / foamed metal / carbon / aramid / iron plate in the order of lamination. The peeling test was evaluated using a universal material testing machine (UTM, Shimadzu-10) at a peeling speed of 3 mm / min and terminated when the distance between the two materials was about 3 cm.

The evaluation results of the peeling properties are shown in Table 3 and Fig.

As shown in Table 3 and Fig. 11, it can be seen that the bonding force between the aramid and the stainless steel plate is weaker than the adhesion force between the foamed metal and the carbon fiber. Further, it can be seen that the foaming metal tears when the foaming metal and the carbon fiber are peeled off, indicating that the adhesion between the foaming metal and the carbon fiber is very strong.

The photographs before and after peeling evaluation are shown in Fig.

1-4. Evaluation of Sound Absorption / Sound Insulation Characteristics

Two types of high frequency and low frequency specimens were prepared. The diameter of the high frequency specimen is 30 mm and the diameter of the low frequency specimen is 100 mm.

The specimens were prepared in accordance with the order of lamination: (1) aramid / carbon / foamed metal / carbon / aramid, (2) steel plate / aramid / carbon / foamed metal / carbon / aramid / steel plate, , And (5) a foam metal / iron plate. In addition, a Teflon tape was wound around the specimen to close the specimen and the specimen was wound around the specimen so that no sound could be counted. An image of the specimen produced by the above method is shown in Fig. Experiments were carried out using high frequency and low frequency sound absorption / sound insulation tester (SP-2001, SP-2002, SCIEN CO.LTD).

The evaluation results of the sound absorption / sound insulation characteristics are shown in Figs. 14 to 17. Fig.

As shown in FIG. 14 to FIG. 17, the foamed metal is excellent in sound absorption and sound insulation, but the sound absorption property of the specimen in which the aramid and the carbon fiber are laminated on the foamed metal is remarkably decreased and the sound quality is slightly increased. Further, in the case of the specimen in which the stainless steel plate is laminated on the foamed metal, the sound absorption property is almost zero as compared with the foamed metal, and the sound insulation is remarkably increased. Also, in the case of specimens in which both foamed metal and aramid, carbon, and stainless steel sheets were laminated, the sound absorption was close to zero, and the high soundness was obtained. The car sound was measured at 44.4dB at 500Hz and 39.7dB at 1000Hz.

1-5. Evaluation of thermal conductivity

The heat conduction specimens were prepared by (1) foamed metal / carbon / aramid / stainless steel plate, (2) pure foamed metal, and (3) stainless steel plate according to the stacking order.

The thermal conductivity was measured using an electric furnace, and the temperature was measured with a video camera and a laser gun every 10 minutes while measuring the thermal conductivity. The temperature was maintained at 200 ° C, 400 ° C, and 600 ° C for 30 minutes, respectively, and the three specimens were measured for 1 hour each.

The evaluation results of the thermal conductivity characteristics are shown in Figs. 18 to 20. Fig.

As shown in FIG. 18 to FIG. 20, the stainless steel sheet had a small difference in temperature between the inside and the outside under heat, but it was found that the temperature difference between the inside and the outside was large while the foamed metal, aramid fiber and carbon fiber, . These results show that the thermal conductivity of composite panel specimens is significantly lowered. In addition, the thermal conductivity of the composite panel specimen was about 2 times lower than that of the foamed metal at 600 ° C. This shows that the thermal conductivity is remarkably lowered due to the low density and the foamed metal having the pore shape, and the aramid which is the heat resistant material is laminated to improve the heat conduction characteristic.

The thermal conductivity of the stainless steel plate, pure aluminum foamed metal, and foamed metal / carbon / aramid / stainless steel plate samples are shown in Tables 4 to 6, respectively.

Claims (4)

Laminating aluminum foamed metal, aramid fiber and carbon fiber to produce a core inside the fire door; And inserting the core inside the fire door between an iron plate panel and then joining. The method according to claim 1, wherein the core in the fire door is laminated in the order of aramid fiber / aramid fiber / carbon fiber / carbon fiber / aluminum foamed metal / carbon fiber / carbon fiber / aramid fiber / aramid fiber . The method of claim 1, wherein the step of fabricating the inner core of the fire door comprises heating the inner core of the fire door, which is laminated at 90-110 캜 for 1 to 3 hours under vacuum. A fire door manufactured by the manufacturing method according to any one of claims 1 to 3.

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