JP3345742B2 - Fireproof insulation board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire-resistant and heat-insulating plate used as an outer wall material, a partition member and the like of a freezer warehouse building.

[0002]

2. Description of the Related Art In a freezer warehouse building, an outer wall is attached to a framed building frame to form an outer wall, and the room is partitioned into a plurality of rooms by a partitioning material according to the application, and a roofing material is provided above the building frame. It is common to attach a roof.

As the above-mentioned outer wall material and partition material, a plate material made of a resin-based heat insulating material is known, and since this plate material has excellent heat insulating performance, it can insulate the inside and outside of a room or an adjacent room.

However, when the above-mentioned plate material is not incombustible and is used as a frozen warehouse building having excellent fire resistance, an outer wall material and a partition material having a fire-resistant structure are constructed in advance, and the outer wall material and the partition material are formed on the surface of the outer wall material and the partition material. A heat insulating plate made of the above-mentioned resin-based heat insulating material is attached later to form a fire-resistant heat-insulating outer wall or partition, or a molten heat-insulating material is sprayed on the surface of the external wall material or the partition material to form a heat-insulating outer wall or partition as a heat insulating layer. .

[0005] As described above, this is a construction method in which an outer wall material and a partition material having a fireproof structure are constructed on site, and then a heat insulating plate is attached to the surface, or a molten heat insulating material is sprayed to form a fireproof heat insulating outer wall and a partition. This requires a large number of man-hours, which not only increases the construction cost, but also lengthens the construction period.

As a method of solving the problems of the above-mentioned method, a method is known in which a fire-resistant and heat-insulating plate is attached to a framed building frame. In this method, the plate is manufactured in advance in a factory and then attached at a building site. Therefore, the number of steps can be reduced, the construction cost can be reduced, and the construction period can be shortened.

[0007]

However, the above-mentioned refractory and heat-insulating plate material is obtained by directly bonding a refractory plate made of a cement-based incombustible material and an insulating plate made of a resin-based heat-insulating material. It becomes heavy, and handling becomes troublesome. In addition, heat heated at a high temperature due to a flame at the time of a fire passes through a refractory plate made of a non-combustible material, and the compression heat blocked by a heat insulating layer at a junction with the heat insulating plate made of a resin-based heat insulating material further increases the temperature. This has the drawback of instantaneously spreading the heat of the heat insulating plate made of the resin-based heat insulating material, and the fire resistance is not sufficient.

As the above-mentioned fire-resistant heat-insulating outer wall material, a material in which a non-combustible heat-insulating material is wrapped with a metal plate has been developed. -25
In order to achieve the same thermal insulation performance as resin-based thermal insulation at a low temperature of ℃ or more, it is necessary to increase the thickness of non-combustible thermal insulation considerably, which is disadvantageous to economics such as a decrease in the effective area of the building. is there.

Further, since a plurality of refractory and heat-insulating plate members formed as described above are joined adjacently to form an outer wall and a partition, a gap at the joint is closed by the joining material. The fire resistance is extremely poor because it is a material or a flame-retardant resin material.It melts at the time of a fire and the flame invades and ignites the heat insulating material. Inferior.

Accordingly, an object of the present invention is to provide a fire-resistant and heat-insulating plate which can solve the above-mentioned problems.

[0011]

SUMMARY OF THE INVENTION The present invention has a thickness of 180 to
A calcium silicate plate 1 having a thickness of 25 mm on both sides 2, 2 in a thickness direction of a heat insulating layer 1 of a foamed rigid urethane of 200 mm.
Alumina silicate fiber paper 13 is bonded to each inner calcium silicate plate 11, and each of the alumina silicate fiber papers 13 has a thickness of 5 to 5.
An 8 mm outer calcium silicate plate 12 is joined, and each outer calcium silicate plate 12 is
Are fire-resistant and heat-insulating plate members which are respectively bonded.

[0012]

[0013]

[0014]

[Action] The fire-resistant heat-insulating plate of the present invention has a thickness excellent in heat insulation.
A 25 mm thick inner calcium silicate plate 11, an alumina silicate fiber paper 13, a thickness of 180 mm to 200 mm on both sides 2, 2 in the thickness direction of a heat insulating layer 1 of foamed hard urethane
5-8 mm outer calcium silicate plate 12, steel plate 14
Respectively, so that the heat-insulating layer 1 made of foamed hard urethane does not melt and ignite over a long period of time due to heat from both sides of the fire-resistant heat-insulating plate. Excellent and lightweight. Therefore, it is a fire-resistant and heat-insulating plate material that can be used for a wide range of applications such as an outer wall material and a partition plate.

[0015]

[0016]

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a heat insulating layer 1 having a predetermined thickness and two surfaces 2 and 2 of the heat insulating layer 1 in the thickness direction.
And a non-combustible layer 10 provided as a fire-resistant and heat-insulating plate 20.

The heat insulating layer 1 is made of foamed hard urethane, has a thickness of about 180 mm and a specific gravity of 0.035.

The non-combustible layer 10 is formed by bonding a calcium silicate plate 11 mixed with inner fibers and a calcium silicate plate 12 mixed with outer fibers via an alumina silicate fiber paper 13, and a steel plate 14 is formed on the outer surface. They are joined. The inner calcium silicate plate 11 is thick (for example, 25 m thick).
m), the outer calcium silicate plate 12 is thin (for example, 5 to 8 mm in thickness), and the alumina silicate fiber paper 13 is 0.5 mm in thickness.

The steel plate 14 is a colored galvanized steel plate having a thickness of 0.4 to 0.6 mm, and has a good appearance and a high rigidity. The end of the steel plate 14 is bent in a hook shape to hold the inside calcium silicate plate 11.

One end of the refractory heat insulating plate 20 (the heat insulating layer 1)
Has one end, and the other end (the other end of the heat insulating layer 1) has a concave portion 22. Two fire-resistant insulation boards 20
As shown in FIG. 2, the protrusions 21 and the recesses 22 fit together, and a gap is formed between the non-combustible layer 10 and the portion of the heat insulating layer 1 near both sides in the thickness direction.

The gap is filled with a bonding material. This joining material is a base material 30 mainly composed of zeolite.
, A ceramic fiber blanket (fire-resistant material) 31 and an acrylic sealing material 32.

The ceramic fiber blanket 31 is provided in the gap between the heat insulating layers 1, and the ceramic fiber blanket 31 is used as a backup material to inject and fill the base material 30 into the gap between the inner calcium silicate plates 11. Acrylic sealing material 3
2 are filled. The base 30 is a mixture of a polysulfide-based sealing material and zeolite at a ratio of 3: 7.

Next, a description will be given of a fire resistance test of the fire-resistant heat insulating plate. (Experimental method) Specimens to be described later were provided in each of the nine openings of the refractory plate, and the specimens were placed in a furnace.
Heating to 50 ° C., the heat transfer temperature at the joint between the heat insulating layer 1 and the non-combustible layer 10 of each test piece, ie, the back surface of the inner calcium silicate plate 11, is measured at intervals of 10 minutes for 1 hour.

(Experiment 1) As shown in FIG. 3, on both sides of a heat insulating layer 30 (thickness: about 200 mm) of foamed hard urethane, a calcium silicate plate 31 (thickness: 25 mm) containing fibers and a steel plate 32 (thickness: 0.5 mm) were superposed sequentially, and the specimen A was tested under the conditions described above.

(Experiment 2) As shown in FIG. 4, the test piece A of Experiment 1 was tested under the above-mentioned conditions with the thickness of the calcium silicate plate 31 being 30 mm.

(Experiment 3) As shown in FIG.
A specimen A having a 10 mm-thick calcium silicate plate 33 attached to a m-calcium silicate plate 31 and a steel plate 32 provided on the surface was tested under the above-described conditions.

(Experiment 4) As shown in FIG. 6, a test piece A of Experiment 3 was tested under the above-described conditions with the calcium silicate plate 33 having a thickness of 20 mm.

(Experiment 5) As shown in FIG.
Specimen A in which alumina silicate fiber paper 35 having a thickness of 0.5 mm was interposed between a calcium silicate plate 31 having a thickness of m and a calcium silicate plate 33 having a thickness of 5 mm was tested under the above-described conditions.

(Experiment 6) As shown in FIG.
mm thick foamed urethane heat insulation layer 30
mm cement-based plate 36 having a thickness of 0.5 mm on its surface.
The test piece A provided with the steel plate 32 mm was tested under the above-described conditions.

(Experiment 7) As shown in FIG. 9, a specimen A obtained by bonding two cement-based plates 37 each having a thickness of 15 mm to the cement-based plate 36 of the specimen A in Experiment 7 was used. The test was performed under the conditions described above.

(Experiment 8) As shown in FIG. 10, a cement-based plate 36 having a thickness of 25 mm and a cement-based plate 39 having a thickness of 5 mm were used as the cement-based plate 36 of the specimen A of Experiment 7 with a thickness of 0.1 mm.
Specimen A, which was laminated with a 5 mm alumina silicate fiber paper 40 therebetween, was tested under the conditions described above.

(Experimental Results) The average temperature measured at each test specimen from Experiment 1 to Experiment 8 was as shown in Table 1 below. However, ignition means that the heat insulating layer 30 has burned.

[0034]

[Table 1]

Thus, in Experiment 1, the measured temperature after one hour was 320 ° C., and the foamed hard urethane was ignited.
Similarly, in Experiment 2, the temperature reached 260 ° C., and the foamed rigid urethane ignited.

In Experiment 3, when the measurement temperature was 170 ° C. and in Experiment 1,
Although the temperature is lower than in Experiment 2, the flash point of urethane foam is 1
Since the temperature was higher than 30 ° C., the foamed hard urethane did not ignite but almost melted.

In Experiment 4, the measurement temperature was 120 ° C., and the foamed hard urethane did not ignite, but melted at a depth of 5 cm from the surface.

In Experiment 5, at the measurement temperature of 85 ° C., the foamed hard urethane did not deteriorate at all.

In Experiment 6, the measured temperature after 40 minutes was 330 ° C.
The foamed rigid urethane ignited in 40 minutes.

In Experiment 7, the measured temperature after 40 minutes was 310 ° C.
However, the foamed rigid urethane ignited in 40 minutes.

In Experiment 8, the measured temperature after 50 minutes was 230 ° C.
Then, the foamed rigid urethane melted, the measurement temperature after one hour was 250 ° C., and the foamed rigid urethane was ignited.

From the above, the test specimen in Experiment 5 was a refractory material for one hour, and the test specimens in other experiments were ignited, melted, and partially melted within one hour.

Next, an experimental example of the joining material will be described. (Experiment 1) A ceramic fiber blanket 31 was provided in the gap between the joints shown in FIG.
Acrylic sealant for fireproof 12mm wide and 30mm deep
mm and heated in the same furnace as in the previous experiment. As a result, the acrylic sealant for fire resistance burned in 10 minutes, and the foamed hard urethane as the heat insulating layer was ignited.

(Experiment 2) A modified polysulfide-based sealing material for refractory, in which calcium silicate was mixed as a refractory, was used in place of the acrylic sealing material for refractory of Experiment 1, and heated under the same conditions. As a result, after one hour, only the resin of the sealing material burned and the refractory remained, but the surface temperature of the ceramic fiber blanket 31 was 30 ° C.
The temperature reached 0 ° C., and the foamed rigid urethane ignited.

(Experiment 3) A modified base material in which a polysulfide-based sealing material and zeolite were mixed at a ratio of 3 to 7 was filled as a joining material in a joint gap, and heated under the same conditions as described above. As a result, the internal temperature of the bonding material after one hour was 120 ° C., and only a part of the foamed rigid urethane was melted.

From this, it was found that the use of a base-like joining material containing zeolite as a main component can withstand heating for one hour.

In the above embodiment, the non-combustible layers 10 are provided on both surfaces of the heat insulating layer 1, respectively. However, if it is sufficient to withstand fire from one side of the safe or the like, the non-combustible layer 10 is provided on one surface of the heat insulating layer 1. What is necessary is just to make it the refractory heat insulation board material provided with 10.

[0048]

According to the first aspect of the present invention, there is provided a fire-resistant and heat-insulating plate.
25 mm thick on both sides 2 and 2 of the heat insulating layer 1 made of foamed hard urethane having a thickness of 180 to 200 mm and having excellent heat insulating properties.
, A calcium silicate plate 11, an alumina silicate fiber paper 13, an outer calcium silicate plate 12 having a thickness of 5 to 8 mm , and a steel plate 14 are sequentially provided. Since the heat insulating layer 1 made of hard urethane does not touch and ignite for a long period of time, it can withstand fire from both sides, and can have excellent heat insulating properties and be lightweight. Therefore, it is a fire-resistant and heat-insulating plate material that can be used for a wide range of applications such as an outer wall material and a partition plate.

[0049]

[0050]

[0051]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a fire-resistant and heat-insulating plate showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a seal structure of a joint.

FIG. 3 is a sectional view of a test body.

FIG. 4 is a sectional view of a test body.

FIG. 5 is a sectional view of a test body.

FIG. 6 is a sectional view of a test body.

FIG. 7 is a sectional view of a test body.

FIG. 8 is a sectional view of a test body.

FIG. 9 is a sectional view of a test body.

FIG. 10 is a sectional view of a test body.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Heat insulation layer, 10 ... Noncombustible layer, 11 ... Inner calcium silicate plate, 12 ... Outer calcium silicate plate, 13 ... Alumina silicate fiber paper, 14 ... Steel plate, 30 ... Base material made mainly from zeolite , 31: ceramic fiber blanket, 32: acrylic sealing material.

Continuation of the front page (56) References JP-A-7-11596 (JP, A) JP-A-8-114654 (JP, A) JP-A-51-56823 (JP, A) JP-A-55-1222941 (JP) JP-A-55-15919 (JP, A) JP-A-54-131313 (JP, U)

Claims (1)

(57) [Claims] 1. A heat insulating layer 1 made of foamed hard urethane having a thickness of 180 to 200 mm and having a thickness of 25 mm
An inner calcium silicate plate 11 is provided, an alumina silicate fiber paper 13 is bonded to each inner calcium silicate plate 11, and an outer silica silicate having a thickness of 5 to 8 mm is attached to each alumina silicate fiber paper 13. A fire-resistant and heat-insulating plate material, characterized in that the calcium plates 12 are respectively joined, and the steel plates 14 are respectively joined to the outer calcium silicate plates 12.