JPH08158503A - Architectural fire resistive panel - Google Patents

Abstract

PURPOSE: To provide a desirable fire resistance even with a plate having thin thickness by forming a coating layer, which formes, when it is heated, an expanded fire retardant layer at least on one surface of a rigid base plate. CONSTITUTION: A coating material in the form of a viscous fluid is applied to the surface of a base plate 10 having rigidity to form a coating layer 30. At that moment, a primer treatment 31 is applied to the boudary between the layer 30 and the plate 10 to provide a sufficient joint strength. And when the layer 30 is porous or the coating material itself has low water resistance, or for use in a humid environment, the layer 30 is covered with a waterproofing layer 60. And a finishing layer 50 is formed to improve the layer 30. Thus in the case of a fire, a carbide is formed in the layer 30 by heat and also an expanding agent is expanded so that a fire retardant layer 20 having required thickness comprising expanded carbide is produced. As a result, a thermal insulating plate is not needed and hence required fire resistance can be obtained using a thin plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof panel for construction.

[0002]

2. Description of the Related Art Conventionally, fireproof construction panels have been formed by attaching a heat insulating material such as a calcium silicate plate to the back surface of a face plate made of a metal material. Side or the rear surface of the panel is prevented from spreading.

[0003]

However, in the above-mentioned conventional example, it is necessary to increase the thickness of the heat insulator in order to obtain a predetermined fire resistance performance, and the thickness and weight of the panel itself becomes large, which makes it inconvenient to handle. In addition to that, it is difficult to give a curved surface, for example, and the degree of freedom in design is reduced.

Further, in the above-mentioned conventional example, although the panel itself has an action of preventing heat transfer to the back surface due to the heat insulating property of the calcium silicate plate, the metal material used as the face plate is excellent in heat transfer property. In general, it is difficult to efficiently prevent heat transfer to the fixed part of the panel formed by bending the face plate, and a separate means for increasing the fire resistance of the fixed part of the panel is required. Have.

The present invention has been made to solve the above drawbacks, and an object of the present invention is to provide a fireproof panel for construction which has a thin plate thickness and has a required fireproof performance.

[0006]

According to the present invention, the above object is to form a coating layer 30 for forming a foamed flame retardant layer 20 on heating on at least one surface of a substrate 10 having rigidity, as shown in FIG. It is achieved by providing a fireproof panel for construction.

[0007]

In the present invention, the coating layer 30 formed on the surface of the rigid substrate 10 foams in the event of a fire or the like to form a flame-retardant layer (see FIG. 1 (c)). In FIG. 1 (c), reference numeral 32 indicates an unfoamed portion. The foamed flame-retardant layer 20 hinders heat transfer to the rigid substrate 10 and exhibits desired fire resistance. Since the flame-retardant layer is a foam, and the foam is generated by the heat of a fire or the like, or by a flame, a smooth surface condition is obtained under normal conditions, and even if a thin film is formed Due to the expansion due to, the substantial heat transfer distance becomes large, and a sufficient heat insulating effect is exhibited. Further, the foamed flame-retardant layer 20 thus formed becomes a rough structure and traps the gas generated during foaming in the gaps. As a result, an air shield is formed as a whole, and the heat insulation performance is further improved. In addition, since the coating layer 30 exhibits heat insulation performance by foaming, even if microcracks or the like are present in the initial state, the coating layer 30 is self-repaired by the foaming, and therefore the presence of the microcracks or the like is allowed. Makes coating film management relatively easy.

Further, the foamed flame-retardant layer 20 is prevented from conducting heat to the rigid substrate 10 at the time of combustion, so that the general performance, that is, the transfer of heat or flame to the back side is prevented. However, when the rigid substrate 10 is formed of a material such as metal that is susceptible to thermal deformation, thermal deformation of the rigid substrate 10 itself is effectively prevented, and, for example, a door panel or an opening for building a door is formed. When used for a formed wall panel or the like, opening / closing operation of the door is ensured.

The coating layer 3 formed on the surface
0 makes it possible to eliminate the need for a heat insulating element such as a calcium silicate plate on the back surface, or to use a heat insulating element thinner than conventional ones, which not only contributes to thinning and weight reduction of the panel, but also the degree of freedom in design. It also brings the improvement of.

Further, the foamed flame-retardant layer 20 effectively blocks heat transfer to the joint with another member 70 such as a combustible body wall, and as shown in FIG. Covering the armature 71, the panel gap, etc. contributes to simplification of the fireproof structure around the joint.

Further, when a metal material is used for the rigid substrate 10, workability is improved. Furthermore, abrasion resistance, water resistance, weather resistance and the like are improved by forming an appropriate finishing layer 50 according to the use environment, and the waterproof layer 60 is formed by the performance of the coating layer 30 due to moisture. Prevent deterioration, peeling and outflow.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A fireproof panel for construction according to the present invention is constructed by forming a coating layer 30 on the surface of a substrate 10 having rigidity, as shown in FIG. As the material of the rigid substrate 10, various materials such as a steel plate, a stainless steel plate and the like as well as a gypsum board and the like can be used, and further, a composite plate including these metal plates can also be used.
Further, for a relatively low fireproof specification, an aluminum plate or the like may be used.

The coating layer 30 is formed by applying a viscous fluid coating material to the surface of the rigid substrate 10 and then drying it. The application means is, for example, brush coating, spraying, or dipping. It is selected in consideration of physical properties such as viscosity of the coating material. In addition, as shown in FIG.
Placing the primer treatment layer 31 on the boundary surface between the coating layer 30 and the rigid substrate 10 is an effective modification in order to ensure sufficient bonding strength of the coating layer 30 to the rigid substrate 10.

Further, if the coating layer 30 is porous, or if the fireproof coating material itself is inferior in water resistance performance, or if the fireproof panel for construction is used in a humid environment, the coating layer 30 has no water permeability. It is desirable to cover with the waterproof layer 60, and the coating layer 3
It is also possible to form a finishing layer 50 such as paint on the surface portion in order to improve the color tone of 0 or abrasion resistance.

The coating material used is one that produces a flame-retardant foam under a predetermined temperature condition or flame-flame condition. Various flame-retardant materials can be used as the base material of the flame-retardant foam produced, and the flame-retardant material contained in advance is dispersed by the foaming of the foaming agent and cooperates with the binder to form a network structure. Other than the material for forming the foamed heat insulating layer, it is possible to use a material that produces a flame retardant material such as a carbide in a combustion state.

That is, the present invention is applied to the substrate 1 having rigidity.
It is also possible to configure a fireproof panel for construction in which a coating layer 30 that forms a flame-retardant layer of expanded carbide when heated is formed on at least one surface of 0. In this case, the coating material is a carbide forming material, and A mixture of foaming agent and binder is used.

As the carbide-forming material, starch, dextrin, carbohydrates such as polysaccharides, polyfunctional alcohols such as monopentaerythritol, and resinous substances such as urea resin can be used. It is desirable to mix a reaction catalyst substance for promoting a carbonization of the carbide forming material by causing a dehydration reaction with the carbide forming material. As the reaction catalyst substance, a phosphoric acid-based compound such as ammonium phosphate can be used.

On the other hand, as the foaming agent, it is possible to use a material such as ammonium phosphate, melanin, urea or the like which releases a nonflammable gas such as ammonia by thermal decomposition. The binder is a binder for forming a coating film, and an aqueous system such as an acrylic resin emulsion such as polymethyl acrylate or polyethyl acrylate, or a solvent system such as an alkyd resin is used.

Therefore, in this embodiment, when a fire or the like occurs in the room in which the building fireproof panel is installed, the coating layer 30 forms a carbide due to a fire flame or heat and a foam material. Are foamed to form the flame-retardant layer 20 made of expanded carbide having a required thickness. The foamed flame-retardant layer 20, as shown in FIG.
Not only the thickness itself is increased to increase the heat insulating effect, but also the fastener 71 and the like are covered, and the gap between the panels or the mounting portion is covered to prevent fire spread and heat transfer to the portion.

The building fire-resistant panel is molded into various shapes according to the intended use. FIG. 3 shows an embodiment formed as a single-sided panel. In addition to being formed in a flat plate shape as shown in FIG. 3 (a), as shown in FIG. 3 (b), the peripheral portion is bent to form a box shape. Alternatively, as shown in FIG. 3 (c), a flange-shaped fixed edge 11 is bent at the peripheral edge to form a hat-shaped cross-sectional shape, or the like, and various shapes are formed according to use conditions. FIG. 3 (b),
The building fireproof panel having the rising wall 80 as shown in (c) is an effective modification for improving the rigidity of the whole. Although not shown in the embodiments shown in FIG. 3 and subsequent figures, it is free to form the waterproof layer 60 and the like shown in FIG. 1 on the coating layer 30.

Further, on the back surface of these rigid substrates 10,
It is possible to attach an appropriate backing material 90, use a rigid plate for the backing material 90 to compensate for rigidity, or use a calcium silicate plate or the like to further improve heat resistance, or The sound insulation performance can be improved by using a sound insulation material such as glass wool. It is particularly effective to use these backing materials 90 for the fireproof panel for construction having a three-dimensional shape shown in FIGS. 3B and 3C, because the overall panel thickness is not increased. When bending or drawing is performed, a refractory coating forming step is provided after the processing to prevent cracks, breaks, or peeling of the coating layer 30 in the processing step. Is desirable.

FIG. 4 shows an embodiment of a double-sided panel which is often used as a partition panel or the like. The double-sided panel having a hollow portion 81 and formed in a bag shape is formed by making the back surfaces of the building fire-resistant panel shown in FIG. Welding or rivets are used to join the fixed edges 11 to each other, and the coating layer 30 is formed on the surface of each rigid substrate 10 in a single state. When relatively high rigidity is required, as shown in FIG. 4B, the fixed edge 1 is fixed to the edge frame 40 having a rectangular frame shape or a three-sided frame shape.
You may form 1 by joining.

Furthermore, in the case of a building fireproof panel of the type in which the edges are fitted to the columns, the fireproof panel for construction is shown in FIG.
As shown in (c), two rigid substrates 10 and 10 are bent to form a folded portion 12 having fixed edges 11 formed at the edges, and the fixed edges 11 are joined together by welding, rivets or the like. A fitting recess 13 is formed at the edge. In this case, it is possible to form the coating layer 30 on each rigid substrate 10 in advance. However, if the presence of the coating layer 30 at the joint is a problem due to the properties of the coating layer 30, FIG. As shown in (c), it is desirable that the rigid substrates 10 be bonded together and then collectively formed by dipping or the like.

[0024]

As is apparent from the above description, according to the present invention, since the fireproof coating layer formed on the surface of the metal substrate has fireproof and heat insulating properties, the heat insulating plate may be removed or the heat insulating plate may be removed. Since it is possible to reduce the plate thickness of, it is possible to obtain the required fire resistance performance with a thin plate thickness.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of the present invention, in which (a) is a cross-sectional view provided with a primer treatment layer, (b) is a cross-sectional view provided with a waterproof layer, and (c) is a foaming layer formed by a fireproof coating layer. It is sectional drawing which shows the state in which the carbide heat insulation layer was formed.

2A and 2B are diagrams showing a covering state of a joint portion with a foamed flame-retardant layer, wherein FIG. 2A is a diagram showing an unfoamed state, and FIG. 2B is a diagram showing a state after foaming.

FIG. 3 is an overall cross-sectional view of a refractory panel for construction, in which (a) is a plate-like shape, (b) is a box-like shape, and (c) is a hat-like cross-section. Indicates.

FIG. 4 is a cross-sectional view showing a double-sided panel, (a) having a fixed edge on the periphery, (b) using an edge frame,
(C) shows a modified example having a fitting recess.

[Explanation of symbols]

 10 Substrate 11 Fixed Edge 20 Foam Flame Retardant Layer 30 Coating Layer 40 Edge Frame 50 Finishing Layer 60 Waterproof Layer

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Mitsuyoshi Nara 1-16-15 Kanda, Chiyoda-ku, Tokyo Kyoritsu Chemical Industry Co., Ltd.

Claims (6)

[Claims] 1. A fireproof panel for construction, wherein a coating layer that forms a foamed flame-retardant layer when heated is formed on at least one surface of a substrate having rigidity. 2. The building fireproof panel according to claim 1, wherein the substrate is made of a metal material. 3. A rigid substrate having a hat-shaped cross section formed by bending a fixed edge on the peripheral edge is joined at the fixed edge, and
Fireproof panel for construction, which has a coating layer that forms a foamed flame retardant layer when heated. 4. A front surface portion comprising: a rectangular frame-shaped edge frame; and a rigid substrate fixed to the upper and lower surfaces of the edge frame by fixing a fixed edge bent to the edge to the peripheral edge of the edge frame. A fireproof panel for construction, on which a coating layer that forms a foamed flame retardant layer when heated is formed. 5. The refractory panel for construction according to claim 1, 2, 3 or 4, wherein a finishing material is applied to the surface to form a finishing layer. 6. The fireproof panel for construction according to claim 1, further comprising a waterproof layer for preventing water permeation to the fireproof coating layer.