JPH0430306Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an entrance/exit door that is excellent in fire resistance, heat insulation, impact resistance, and sound insulation.

(Conventional technology) Entrance/exit doors installed in buildings are made with emphasis on solid appearance and strength, and are made of a single piece of wood and are assembled with thin plywood or metal plates on both sides of the four-sided frame. is commercially available.

(Problem that the invention aims to solve) Entrance/exit doors have been trying to satisfy the conflicting demands of having a sense of weight while being light in opening and closing operations. However, a single plank of wood would be too heavy, and a type with a thin board attached to a framework was light but vulnerable to breakage or denting when subjected to impact. Also, wood is completely resistant to fire, and even steel has high thermal conductivity, and despite its weight, it cannot completely prevent heat from being transmitted to the other side of the door. There was no way to prevent condensation from forming on the entrance/exit door.
Furthermore, the effect of blocking external noise or indoor sound leakage is generally weak.

(Means for Solving the Problems) The entrance/exit door according to the present invention is constructed by providing a space between two facing facing members, and the space is filled with 20 to 65% by weight of cement and bone. material
4.5-14% by weight of raw coke and scaly mica based on 100% by weight of the total mixture consisting of 80-35% by weight.
4.5-9% by weight, borax 5-15% by weight, glaze 5-30%
% by weight and 20 to 45% by weight of an organic foamable adhesive, cement is hydrated and hardened, and a porous material made by foaming the organic foamable adhesive is filled.

(Function) In the above compound, cement not only contributes to high strength as a binder but also acts as a fireproofing material when heated by flame. In particular, the use of alumina cement as cement promotes homogeneous, fine foaming of the cast body, resulting in flexible, high-strength, impact-resistant formulations; In a non-oxidizing atmosphere at temperatures above ℃, a carbonaceous substance with a mesophase crystal structure that is fire-resistant and has high high-temperature strength is generated, and it penetrates into the compound structure and makes the entrance/exit door a high-strength one that is fire-resistant and has high impact resistance. There is a function to do that. Since scaly mica originally has low heat conductivity in the thickness direction, even if it is rapidly heated from outside the surface of the entrance/exit door, the scaly mica is arranged in layers along the surface of the entrance/exit door. The mica protects the inside of the entrance door by preventing too much heat from being transferred to the inside. The addition of borax is important because borax forms penta- or decahydrates and holds a large amount of crystallization water.
When the temperature exceeds 100℃, the endothermic reaction and released water prevent the compound from burning.
Furthermore, when the temperature rises, alumina, silica, lime,
It reacts with inorganic components such as scaly mica to form a glass composition, forming a binder or a high-temperature insulating material.

When limestone is used as aggregate, when placed in an environment with elevated temperatures, it thermally decomposes and generates CO ₂ gas, which reduces the content of O ₂ in the bubbles and remains in the panel material, making it flame retardant. It contributes to improving the properties of raw coke and helps the raw coke to become mesophase.

Isocyanate-based, urethane-based, and epoxy-based adhesives are used as organic foamable adhesives, and they provide the compound with the characteristics of reducing porous weight and increasing sound insulation. Note that a self-foaming foaming agent such as polysilosane may be used as the foaming agent.

Instead of using one type of glaze, use a combination of several types of glazes, such as those with a relatively high melting point, those with a normal melting point, and those with a low melting point. is preferred. Examples of low melting point products include PbO−B ₂ O ₃ system,
B ₂ O ₃ −PbO−Tl ₂ O system, NaO−P ₂ O ₅ system, P ₂ O ₅ −
Select PbO-based, NaO-P ₂ O ₅ -SiO _2- based, or Zegel cone composition with various melting points, etc.
can be used.

This low melting point glaze is used when the entrance/exit door is heated due to a fire, etc. The borax first releases its crystal water at 100 to 200℃ and exerts a fireproofing effect, and then the borax exhibits a fireproofing effect when the temperature exceeds 200℃. When it is used, it has a fireproofing effect. Note that some of the other ingredients can also act as a glaze; for example, borax melts at around 740°C to form glass, so it can act as a fire-resistant glaze at that temperature. .

The glaze with a normal melting point or a high melting point may be appropriately selected and used from well-known enamel glazes, ceramic glazes, and the like.

The glaze is used by preparing glaze powders with various melting points, for example, 400, 600, 800°C, and mixing them into the composition at the same time. In this case, in response to external heating, for example, when heated to about 400°C, the glaze with a melting point of 400°C melts and forms a glass film, and when heated to about 600°C, the glaze with a melting point of 600°C melts and forms a glass film. The interior is protected from external heat by forming a glass film with glaze at ℃.

As mentioned above, this compound has excellent heat resistance, heat insulation, impact resistance, and sound insulation properties, so it is very effective in protecting other parts from the high temperature heat of a fire, and when heated by a fire etc. Even if the temperature of the board rises or the fire spreads, a glass layer is formed inside the entrance door by heating and melting the glaze, which acts to shut out heat from the outside world, so it has excellent fire resistance, heat insulation, impact resistance, and sound insulation. It is possible to provide an entrance/exit door.

(Example) An example of the structure of the entrance/exit door of the present invention is as shown in FIG. Covering members 3 and 3' made of 100% are disposed facing each other. The space 4 contains 200 kg of alumina cement, 400 kg of crushed limestone, and raw coke (softening point approximately 430°C,
Fixed carbon 88.8%, volatile content 10.7%, ash content 0.5%) 25
Kg, scaly mica 25Kg, borax (decahydrate) 70Kg,
PbO−B ₂ O ₃ −Tl ₂ O glaze 15 kg, PbO−B ₂ O ₃ −
250 kg of water was added to a powder mixture consisting of 15 kg of SiO ₂ -based glaze and 250 kg of isocyanate-based foamable adhesive (water-soluble urethane prepolymer), and foamed and mixed.
Filled with hardened material.

In manufacturing, first, a paste-like material made of the above-mentioned additive mixture is loaded into the space 4 through a charging port (not shown) formed in a part of the entrance/exit door.

Therefore, by leaving the charge mixture in which water is added to the above powder mixture, foaming progresses due to the reaction between the isocyanate-based foamable adhesive and water, and a hydration reaction between the alumina cement and water progresses. , the whole is cured to form a formulation 5 consisting of a porous material.

The physical properties of this formulation are as follows.

Transverse bending strength: 22.3Kg/cm ² , Compressive strength: 28.2Kg/cm ² , Bulk specific gravity: 1.09, Sound insulation: Passed grade 1 (Equivalent to Architectural Institute of Japan, sound insulation performance standards for buildings, grade 1 D50) As described above, the entrance/exit door manufactured from the compound of the present invention has excellent fire resistance and heat insulation properties, far exceeding JIS standard products (Japanese Industrial Standard A1304, (2-hour fire resistance)). It has sufficient bending strength, good sound insulation properties with an average sound transmission loss of about 57.4 dB (passed grade 1) in the frequency range of 125 Hz to 4 KHz, and low specific gravity.

In addition, a panel with a thickness of 100 mm was made from the same compound foam as above, and inside it, as shown in Figure 2, from the front side to the back side, there was a position (first point) with a depth (thickness) of 15 mm, and a depth (first point). 32.5mm depth position (second point), 50.0mm depth position (third point), 67.5mm depth position (fourth point), and 85.0mm depth position (fifth point)
The fire resistance and insulation properties were measured by exposing the surface of each structure with a temperature sensor to a flame.

The results are shown in FIG. In the figure, line 1 is the time-temperature curve at the first point, line 2 at the second point, line 3 at the third point, line 4 at the fourth point, line 5 at the fifth point, and line P is the panel surface. The temperature curve, line J, is the panel fire resistance test heating temperature curve specified by the Japanese Industrial Standards (JIS).

This graph shows that even when the temperature of the heating surface reaches about 1000℃, the temperature of the panel member of the present invention at the 5th point near the opposite side hardly rises, indicating that it has extremely excellent fire resistance and insulation properties. . This makes it possible to completely cut off outside cold air and prevent condensation from forming on the entrance/exit door.

(Effects of the invention) As detailed above, the entrance/exit door of the present invention has excellent heat insulation and sound insulation properties, so it is of high quality as an entrance/exit door, and also has many excellent physical properties that are necessary as a fire door. It has chemical properties and is of higher quality and more suitable than conventional products.

In other words, due to the effects of various melting point glazes, scaly mica, organic foam adhesive, etc., which are blended ingredients, fire resistance (JIS 2 hour fire resistance) and heat insulation properties ((3.0Kcal/ ^m2・h・
℃), thermal conductivity 0.03~0.035 of rock wool
0.027, much better than 0.021 of urethane foam and 0.09 of ALC), excellent impact resistance (withstands impact of 3 kg-m), sound insulation, etc., and lightweight (specific gravity 0.3).
~1.6), the amount of steel in the entrance/exit door can be kept to an extremely small amount, making it possible to reduce the overall weight. As a result, it is possible to provide an entrance/exit door that maintains solidity as a whole and has excellent fire resistance, heat insulation, and sound insulation properties.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the entrance/exit door according to the present invention, Figure 2 is a perspective view of the entrance door according to the present invention;
The figure is a layout diagram of temperature sensors in a fire resistance test, and FIG. 3 is a temperature characteristic diagram showing the results. 1... Entrance/exit door, 2... Upper and lower frames, 2'... Both side frames, 3, 3'... Facing member, 4... Filling compound.

Claims (1)

[Scope of utility model registration request] In a fire door constructed by providing a space between two facing facing members, the space is filled with cement.
4.5-14% by weight of raw coke, 4.5-9% by weight of scaly mica, and 5-15% by weight of borax based on the total amount of 100% by weight of the mixture consisting of 20-65% by weight and 80-35% by weight of aggregate.
% by weight, 5-30% by weight of glaze and organic foam adhesive
20 to 45% by weight, and is filled with a porous material made by hydrating and hardening cement and foaming an organic foamable adhesive.