JPH08158502A - Architectural fire resistant panel - Google Patents

Abstract

PURPOSE: To provide a desirable fire resistance using a plate of thin thickness by forming a fire resistant coating layer having a low thermal conductivity at least on one surface of a base plate of metal. CONSTITUTION: A fire resistant coating material in the form of viscous fluid is applied to the surface of a base plate made of metal 10, which is then dried to form a fire resistant coating layer 20. At that moment, a primer treatment layer 21 is disposed between the layer 20 and the plate 10, so that a sufficient joint strength is provided between the layer 20 and the plate 10. And when the layer 20 is porous or the coating material itself has low water resistance, or when a fire resistant panel is used in a humid environment, the coating layer 20 is covered with a waterproofing membrane 22. And a finishing layer 23 is formed for improvement. Further an expanding agent is mixed into a coating material to form and expand a thermal insulating layer 40 of carbide at the time of heating thereby improve thermal insulating effects. Consequently a desirable fire resistance can be obtained even with a plate of thin thickness.

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 provide a refractory material for buildings which has a refractory coating layer 20 having low thermal conductivity formed on at least one surface of a metal substrate 10 as shown in FIG. This is accomplished by providing a panel.

[0007]

In the present invention, the refractory coating layer 20 formed on the surface of the metal substrate 10 prevents heat transfer to the metal substrate 10 having good thermal conductivity in the event of a fire or the like, and a fireproof panel for construction. To give the desired fire resistance. By using a metal material as the substrate material, the formability of the panel is improved. By blocking the heat conduction to the metal substrate 10, not only the general performance, that is, the transfer of heat or flame to the rear side is blocked, but also the metal substrate 10 is blocked.
Thermal deformation of itself is effectively prevented, for example, door panels,
Alternatively, when used for a wall panel or the like in which an opening for building a door is formed, opening / closing operation of the door is ensured.

Further, the refractory coating layer 20 formed on the surface eliminates the need for a heat insulating element such as a calcium silicate plate on the back surface, or makes it possible to use a heat insulating element thinner than the conventional one, thereby making the panel thinner. It not only contributes to weight reduction, but also improves design flexibility.

Furthermore, the refractory coating layer 20 contributes to simplification of the refractory structure around the joint by effectively blocking heat transfer to the joint with other members such as the combustible frame wall. .

[0010]

EXAMPLE A fireproof panel for construction according to the present invention is constructed by forming a fireproof coating layer 20 on the surface of a metal substrate 10 as shown in FIG. As the material of the metal substrate 10, various materials such as a steel plate and a stainless plate can be used, and 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 refractory coating layer 20 is formed by applying a viscous fluid refractory coating material to the surface of the metal substrate 10 and then drying it. The application means is, for example, brush coating or spraying. Alternatively, it is selected from known means such as dipping in consideration of physical properties such as viscosity of the refractory coating material. In addition, as shown in FIG. 1A, the refractory coating layer 20 and the metal substrate 10 are
Arranging the primer treatment layer 21 on the boundary surface between and is an effective modification for ensuring sufficient bonding strength of the refractory coating layer 20 to the metal substrate 10.

Further, when the fireproof coating layer 20 is porous, or when the fireproof coating material itself has poor water resistance performance, or when the fireproof panel for construction is used in a humid environment, it is shown in FIG. 1 (b). As described above, it is possible to cover the fireproof coating layer 20 with a waterproof layer 22 having no water permeability, and in order to improve the color tone or wear resistance of the fireproof coating layer 20, the surface portion is coated with paint or the like. It is also possible to form the layer 23.

As the refractory coating material, the metal substrate 10 is not burnt out under a predetermined temperature condition or flame combustion condition, and when it is formed on the surface of the metal substrate 10.
Various materials can be used as long as they can prevent heat transfer to the material as much as possible, and for example, a material in which a flame retardant material is mixed with a paint can be used.

The fire resistance and heat insulating performance obtained by the fire resistant coating layer 20 do not need to be provided in the fire resistant coating layer 20 in the initial state, and are brought about by the change in properties that occur when a predetermined condition is reached. Alternatively, for example, the constituents of the refractory coating material may be carbonized during heating to function as a heat insulating and refractory layer.

That is, the present invention can also be constructed as a building fireproof panel having a coating layer for forming the carbide heat insulating layer 40 on heating on at least one surface of the metal substrate 10. In this case, the coating layer is formed. Among the materials, starch, dextrin, carbohydrates such as polysaccharides, polyfunctional alcohols such as monopentaerythritol,
A carbide forming material of a resinous material such as urea resin is contained.
Further, in the coating material, it is also possible to mix a reaction catalyst substance for promoting a carbonization of the carbonized layer-forming material by causing a dehydration reaction with the carbonized layer-forming material during combustion, and as the reaction catalyst material, It is possible to use a phosphoric acid compound such as ammonium phosphate.

Further, when a foaming agent such as melanin or ammonium phosphate is mixed in the above coating material, the foaming agent releases noncombustible gas such as ammonia by thermal decomposition to expand the carbide heat insulating layer 40. In addition, the heat insulation effect can be further enhanced.

Therefore, in this embodiment, when a fire or the like occurs in the room where the building fireproof panel is installed, a carbonized layer is formed on the fireproof coating layer 20 due to fire flame or heat. The foam material foams. As shown in FIG. 1 (c), the carbonized layer having excellent heat insulating properties expands due to foaming to increase its thickness, so that the heat insulating performance is further improved and heat transfer to the metal substrate 10 is blocked. It In addition, in FIG.1 (c), 41 shows an unfoamed refractory coating layer.

Such a fireproof panel for construction is used after being formed into various shapes depending on the application. FIG. 2 shows an embodiment formed as a single-sided panel, except that it is formed in a flat plate shape as shown in FIG. 2 (a), and as shown in FIG. 2 (b), its peripheral portion is bent to form a box shape. Alternatively, as shown in FIG. 2 (c), a flange-shaped fixed edge 11 is bent at the peripheral edge to form a hat-shaped cross-section, and various shapes are formed according to the use conditions. 2 (b),
The building fireproof panel having the rising wall 50 as shown in (c) is a modification effective for improving the rigidity of the whole. Although not shown in the embodiments of FIG. 2 and subsequent figures, it is free to form the waterproof layer 22 and the like shown in FIG. 1 on the fireproof coating layer 20.

Further, an appropriate backing material 60 can be adhered to the back surface of these metallic substrates 10,
The rigidity is compensated by using a rigid plate for the lining material 60, the heat resistance performance is further improved by using a calcium silicate plate, or the sound insulation performance is improved by using a sound insulation material such as glass wool. be able to. It is particularly effective to use these backing materials 60 for a building fireproof panel having a three-dimensional shape shown in FIGS. 2B and 2C, 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, and peeling from occurring in the refractory coating layer 20 in the working step. Is desirable.

FIG. 3 shows an embodiment of a double-sided panel often used as a partition panel or the like. The double-sided panel having a hollow portion 70 and formed in a bag shape is formed by making the back surfaces of the fireproof panel for construction shown in FIG. Welding or rivets are used to join the fixed edges 11 to each other, and the refractory coating layer 20 is
It is formed on the surface of each metal substrate 10 in a single state. Further, when relatively high rigidity is required, as shown in FIG.
As shown in, the fixed edge 11 may be formed by joining the rectangular frame or the three-sided frame-shaped edge frame 30.

Further, 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 constructed as shown in FIG.
As shown in (c), the bent portion 12 in which the fixed edge 11 is formed on the edge of the two metal substrates 10 is bent, and the fixed edges 11 are joined together by welding, rivets or the like. A fitting recess 13 is formed in the. In this case, it is possible to form the refractory coating layer 20 on each of the metal substrates 10 in advance. However, in the case where the interposition of the refractory coating layer 20 at the joint is defective due to the properties of the refractory coating layer 20, As shown in FIG. 3C, it is desirable that the metal substrates 10 are bonded together and then collectively formed by dipping or the like.

[0022]

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.

FIG. 2 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. 3 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 Codes] 10 Metal Substrate 11 Fixed Edge 20 Fireproof Coating Layer 30 Edge Frame

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

Claims (3)

[Claims] 1. A fireproof panel for construction, which is formed by forming a fireproof coating layer having low thermal conductivity on at least one surface of a metal substrate at least when heated. 2. A fireproof panel for construction wherein a metal substrate formed into a hat shape in cross-section by bending a fixed edge on the peripheral edge is joined at the fixed edge, and a fireproof coating layer having low thermal conductivity is formed on the surface. 3. A rectangular frame-shaped edge frame, and a metal substrate fixed to the upper and lower surfaces of the edge frame by fixing fixed edges bent and formed on the edge to the peripheral edge of the edge frame. A fireproof panel for construction with a fireproof coating layer with low thermal conductivity formed on its part.