JP2561300B2 - Fire door - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fire door.

[Background technology]

Most of the conventional fire doors that are generally used are made of metal or inorganic material. However, the door made of metal or inorganic material has a problem that the softness and warmth of wood, which is peculiar to wood, cannot be obtained, which impairs aesthetics. Moreover, the door needs to be processed in the field at the time of installation, but the metal door has no workability, and the inorganic door has poor workability because chips or the like are likely to occur during processing.

[Object of the Invention]

In view of such circumstances, it is an object of the present invention to provide a fireproof door which is excellent in fireproofness and workability and can obtain a wood texture.

[Disclosure of Invention]

As a result of repeated examinations, both front and back surfaces of the door panel part are made of wood, and at least one part that appears on the outer surface is a flame-retardant modified wood containing an insoluble non-combustible inorganic material, and the above-mentioned purpose as a fireproof door is achieved. They have found what they can achieve and have completed the present invention.

That is, the present invention is a fireproof door having a door panel in which front and back surfaces of a core material made of a wooden frame are fitted to the entire front and back surfaces, and in the outermost surface portion of the front surface plate or the front surface plate, mainly controlling a decorative portion. The surface material that is made of wood, and the wood constituting at least a portion of the surface plate or surface material that appears on one outer surface of the door panel is a modified wood described below that contains an insoluble incombustible inorganic material. The main point is the fire door.

Hereinafter, the present invention will be described in detail with reference to the drawings showing an embodiment thereof.

FIG. 1 shows a configuration example of a door panel portion of a fireproof door according to the present invention. The door panel 1 is mainly composed of a core member 2 for giving strength to the entire door panel 1 as a frame portion thereof, and a surface plate 3 which is fitted to both front and back surfaces of the core member 2 so as to sandwich it.
The surface plate 3 may be made of a single plate, or may be composed of a surface material 31 and an aggregate 32. Here, the surface material 31 is a portion in the outermost surface portion of the door panel 1 which mainly controls a decorative portion, and the aggregate 32 is attached to the surface material 31 and mainly reinforces the surface plate 3. It shows the part that controls.

As the material forming the core material 2, wood that has not been subjected to non-combustion treatment or wood that has been subjected to non-combustion treatment is used. Further, as the wood, modified wood as described below and other wood such as modified wood modified with a synthetic resin or the like may be used. The inside of the frame of the core material 2 may be assembled by an arbitrary method such as a lattice assembly, a ring assembly, and an arc assembly, and may be formed into a roll core shape or a honeycomb core shape.

The tree species of the wood constituting the surface plate 3 or the surface material 31 is not particularly limited, and can be arbitrarily selected according to its application. However, it is a feature of the fireproof door according to the present invention that at least the wood constituting the outer surface of the door panel is a modified wood containing an insoluble incombustible inorganic material.

Below, the modified wood containing this insoluble incombustible inorganic substance is demonstrated. As will be described later, this is an excellent modified wood which has not only flame retardancy (fire resistance) but also antiseptic / insect resistance and dimensional stability.

Generally, a modification method for imparting flame retardancy to wood is
They are roughly classified based on the following flame retardant mechanism.

(A) Coating with an inorganic substance (b) Acceleration of carbonization (c) Inhibition of chain reaction in flaming combustion (d) Generation of incombustible gas (e) Endotherm by decomposition / release of water of crystallization (f) Insulation by foam layer Where: The modification method in which the insoluble non-combustible inorganic material is included in wood is expected to have the above effects (a) and (b). Moreover, once the insoluble, non-combustible inorganic substance is fixed in the wood cells, it is less likely to dissolve out from the wood thereafter, so there is little concern that their effects will diminish, and this is an effective method.

In the above description, (a) coating with an inorganic material means that even a combustible material can be made flame-retardant by compounding it with an incombustible inorganic material at an appropriate mixing ratio. For example, a conventionally known wood chip cement board is a mixture of combustible wood and non-combustible cement in a weight ratio of about 1: 1 and molded on the board.
It is recognized as a semi-combustible material according to the S standard.

The carbonization promotion of (b) is the following mechanism. That is, wood is thermally decomposed when heated to generate a flammable gas, which burns and combusts. At this time, the presence of phosphoric acid or boric acid promotes the thermal decomposition of the wood, that is, carbonization. A carbonized layer is quickly formed.
This carbonized layer acts as a heat insulating layer and gives a flame retardant effect. Therefore, when the insoluble non-combustible inorganic material contains a phosphoric acid component or a boric acid component, the flame retardant effect of the modified wood is further enhanced.

Then, the preservation of wood containing this insoluble non-combustible inorganic substance
The insect repellent effect will be described. When fungi decompose wood, mycelia first invade into the wood lumen, but if foreign matter is present in the wood lumen, mycelia invasion is impeded, and as a result, it becomes less likely to decompose. . The foreign matter in the lumber of the wood does not have to be a drug having a preservative effect (preservative) or the like, and may be any substance as long as it does not serve as a nutrient for fungi. As for insect repellent, it is similar to antiseptic, and if it has a drug effect, it has not been rubbed, and it is preferably indigestible, indigestible, or repellent to insects. .
Therefore, if an insoluble non-combustible inorganic material satisfying such conditions is contained in the wood lumen, it is effective for preserving and controlling wood.

Regarding the dimensional stability and mechanical strength of wood, if the wood is swollen with water and some substance can be fixed in the cell wall of the wood in that state, both effects can be obtained by the bulk effect. That is, if the interior of the wood cell wall is occupied by the filler, the wood itself is less likely to expand or contract, and at the same time, various strengths including surface hardness are improved. Here, as the fixing substance, since an inorganic substance that is hardly soluble in water can be used, if an insoluble non-combustible inorganic substance is fixed in the wood cell wall,
That effect is obtained.

As described above, the insoluble non-combustible inorganic substance is a very effective component in the modification of wood including flame retardance, and thus wood containing this is one component of the fire door of the present invention. The best material.

The insoluble non-combustible inorganic material is not particularly limited as long as it is an inorganic material having both properties of water-insoluble and non-combustible,
The method for incorporating this into wood is not particularly limited in the present invention. However, due to the following circumstances
For example, even if an insoluble non-combustible inorganic substance is directly dispersed in a solvent such as water and wood is immersed in this dispersion liquid (treatment liquid) to allow the liquid to penetrate into the wood, most of the water will not penetrate. There is a risk that only the solvent will be left.
That is, the narrowest part of the passage that the treatment liquid should pass through when penetrating into the wood is the pit membrane,
While the void size here is about 0.1 μm, the particle size of the insoluble non-combustible inorganic particles that are dispersed particles is usually 0.1 μm.
This is because it is considerably larger than m.

Therefore, the inventors have previously developed a method capable of solving this problem. That is, a cation-containing treatment liquid and an anion-containing treatment liquid that produce an insoluble non-combustible inorganic substance by mixing are prepared separately, and these treatment liquids are sequentially impregnated into raw material wood to cause both ion reactions inside the wood, and wood This is a method for producing modified wood in which an insoluble non-combustible inorganic substance is fixed in a tissue (Japanese Patent Laid-Open No. 60-089423). By doing so, an extremely large amount of insoluble non-combustible inorganic substance can be efficiently contained in the wood, and therefore the above method is also adopted in the present invention.

As the cation-containing treatment liquid in this method, Mg, A
Examples include cations such as l, Ca, Zu, and Ba cations, and those containing one or more cations. Examples of the anion-containing treatment liquid include those containing one or more anions such as CO ₃ , SO ₄ , PO ₄ , BO ₃ or OH anions. In order to obtain the effect (b), it is preferable to use one containing PO ₄ and / or BO ₃ anions.

The cation / anion-containing treatment liquid can be obtained, for example, by dissolving a water-soluble inorganic substance containing any of the above-mentioned respective ions in water. As an inorganic substance that dissolves in water to generate the above cation, Mg
_{Cl 2, MgBr 2, MgSO 4} · H 2 O, Mg (NO 3) 2 · 6H 2 O, AlCl 3, AlBr,
_{Aj 2 (SO 4) 3,} Al (NO 3) 3 · 9H 2 O, CaCl 2 · CaBr 2, Ca (N
_{O 3) 2, ZnCl 2,} BaCl 2 · 2H 2 O, BaBr 2, Ba (NO 3) 2 and the like. Examples of the inorganic substance that dissolves in water to generate the anion include Na ₂ CO ₃ , (NH ₄ ) ₂ CO ₃ , H ₂ SO ₄ , Na ₂ SO ₄ , and (NH ₄ ) ₂
SO ₄ , H ₃ PO ₄ , Na ₂ HPO ₄ , (NH ₄ ) ₂ HPO ₄ , H ₃ BO ₃ , NaBO ₂ , NH ₄ BO ₂
Etc. can be illustrated.

Examples of insoluble non-combustible inorganic substances formed by such a treatment liquid containing cations and anions and fixing in wood include magnesium phosphate, calcium phosphate, barium phosphate, aluminum phosphate, magnesium borate, magnesium carbonate, calcium carbonate, Examples thereof include zinc phosphate, barium carbonate, calcium sulfate and barium sulfate.

The method of impregnating the wood with the cation- and anion-containing treatment liquid is not limited to dipping, and for example, a method of applying the treatment liquid to the surface of the wood may be adopted. There is no particular limitation on the concentration of the treatment liquid, the number of times of impregnation, the order of impregnation, etc., so that the most efficient impregnation can be performed, that is, the insoluble noncombustible inorganic substance can be efficiently generated inside the wood. Can be done. In addition, if the wood to be treated is thoroughly saturated with water prior to the impregnation, the ions in the treatment liquid will diffuse faster using the water in the wood as a medium, so the impregnation time should be shortened. You can Here, examples of the saturated water treatment method include underwater storage, steaming, impregnation under reduced pressure, impregnation under pressure, and the like. Further, post-treatment such as leaching treatment may be performed in order to improve the water resistance of the modified wood after the impregnation treatment.

The modified wood containing the insoluble non-combustible inorganic material obtained by the above treatments is used for at least the wood part of the surface plate 3 or the surface material 31 appearing on one surface of the door panel 1. Here, the aggregate 32 that is bonded to the surface material 31 to form the surface plate 3 is not particularly limited, but includes various woods, metal materials such as zinc steel plates, and non-metallic inorganic materials such as calcareous plates. It is preferably selected. The wood may be the above-mentioned modified wood, or other modified wood modified with a synthetic resin or the like may be used.

The fireproof door according to the present invention is completed by assembling the door panel thus obtained by a usual method.

The door panel included in the fireproof door according to the present invention is not limited to that shown in FIG. For example, the surface plate, the surface material, and the plate material for the aggregate may each be a single plate as illustrated, or may be a plywood plate composed of a plurality of single plates. That is, when the surface plate or the surface material is made of plywood, it is sufficient that at least the veneer that constitutes a part of the outer surface of the door panel is the above-mentioned modified wood (treated veneer). Further, the type of door may be a stile door type or the like other than the flush door type as shown.

 Next, examples of the present invention will be described.

Example 1 Bayer pine wood having a thickness of 5 mm cut by a rotary lace was used as the surface material raw material wood, and was saturated with water so that the inside of the wood was sufficiently impregnated with water.

After the saturated water treatment, the veneer is treated with a 50 ° C zinc chloride solution (concentration: 2 m
ol /) in a first bath for 24 hours, then at 50 ℃
It was immersed in a second bath consisting of the above disodium hydrogen phosphate aqueous solution (concentration 4 mol /) for 24 hours.

After the immersion, hot air drying was performed to obtain a treated veneer having a water content of 5 to 10%.

Using a three-ply bay pine wood plywood (thickness 9 mm) as the aggregate, the surface material consisting of the above-mentioned treated veneer is laminated on the aggregate to form a surface board, which is assembled together with the core material consisting of a wooden frame and flushed. I made a form of door.

As a result of testing the fireproof performance of this door, it was found that it has a performance equivalent to a Class B fire door.

 The above is shown in Table 1.

(Examples 2 and 3) Doors were manufactured in the same manner as in Example 1 except that the surface material, aggregate and core material shown in Table 1 were used. The treated plywood used as the aggregate was a single plate treated in the same manner as the surface material veneer in Example 1, and the thickness of both the zinc steel plate and the calcareous plate was 5 mm.

The fireproof performance of this door was examined, and the results are also shown in Table 1.

As shown in Table 1, in any of the examples, the obtained doors have a wooden texture in appearance, but have the performance of passing or exceeding the standard of Class B fire door. It has been found. Further, when a wooden frame was used as the core material, a lightweight door having fire protection performance similar to the others could be obtained.

〔The invention's effect〕

The fireproof door according to the present invention is as described above, the portions of the door panel portion that appear on both the front and back sides are made of wood, and the wood constituting at least one outer surface thereof is a modified wood containing an insoluble noncombustible inorganic material. Therefore, it is possible to realize a door with a wooden texture that is excellent in fire protection and workability.

[Brief description of drawings]

FIG. 1 shows a structural example of a door panel included in a fireproof door according to the present invention. 1 ... Door panel, 2 ... Core material, 3 ... Surface plate, 31 ...
Surface material, 32 …… Aggregate

Front page continuation (72) Takashi Nakai, 1048 Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works, Ltd. (72) Hiroyuki Ishikawa, 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works, Ltd. (72) Invention Satoru Konishi, 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works, Ltd. (56) Reference JP-A-55-144161 (JP, A) JP-A-61-246003 (JP, A) (JP, U) Actually developed 60-17891 (JP, U)

Claims (2)

(57) [Claims] 1. A fireproof door having a door panel in which front and back surfaces of a core material made of a wooden frame are fitted together.
The surface plate or the outermost surface portion of the surface plate, which mainly controls the decorative portion, is made of wood, and at least a portion of the surface plate or the surface material that appears on one outer surface of the door panel is used. The structure of the raw material wood is such that the constituent wood material impregnates the raw material wood with one of the cation-containing treatment liquid and the anion-containing treatment liquid that produces an insoluble non-combustible inorganic substance by mixing and then impregnates the other. A modified wood having an insoluble non-combustible inorganic material fixed therein, wherein the cation-containing treatment liquid is Mg, Al,
A solution containing at least one selected from the group consisting of Ca, Zu and Ba cations, wherein the anion-containing treatment solution is selected from the group consisting of CO ₃ , SO ₄ , BO ₃ and OH anions. A fire door, which is a liquid containing at least one kind. 2. The wooden frame is formed by impregnating a raw wood with one of a cation-containing treatment liquid and an anion-containing treatment liquid that produce an insoluble non-combustible inorganic substance by mixing, and then impregnating the other. A modified wood having an insoluble non-combustible inorganic material fixed in the structure of the raw wood, wherein the cation-containing treatment liquid is at least one selected from the group consisting of Mg, Al, Ca, Zu and Ba cations. The fire protection system according to claim 1, wherein the anion-containing treatment liquid is a liquid containing at least one selected from the group consisting of CO ₃ , SO ₄ , BO ₃ and OH anions. door.