JP2521186Y2 - Heat resistant flame resistant composite - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is a heat-resistant composite used for a through-wiring structure when wiring through a partition wall or floor provided in a large-scale building, for example. It is about the body.

(Prior Art) Large-scale buildings are obliged to provide partition walls and the like. When the cable B is routed through this partition wall, a normal wall or a floor (hereinafter referred to as the fireproof compartment A), a metal sleeve C fixed through the fire compartment A is installed in the compartment A. It is stipulated by the Building Standards Law that the cable should be routed through the sleeve C with a protrusion of 1 m or more on both outer surfaces.

However, in reality, since there are various other pipes and ducts on the floor or under the floor surrounded by the fireproof compartment A or in the hollow fireproof compartment wall, the metal sleeve C is attached to the outer periphery of the fire compartment A. It is very difficult to project more than 1m on both sides.

Therefore, the inventor of the present application has previously developed a cable penetration fire prevention wiring structure having sufficient fire resistance even if the protruding length of the metal sleeve C is shorter than 1 m. As shown in FIG. 4 (a), the metal sleeve C extends from the outer periphery D of the protruding portion to the cable B and is covered with a cover L formed by molding a flame-resistant foam K having a heat-foaming property. It is a thing.

In order to construct this penetration part fire protection wiring structure, as shown in FIG. 5 (a), the cable B is inserted into the metal sleeve fixed to the partition part A so as to project to both outer surfaces of the partition part A. The cover is divided in half from the outer circumference D of the protruding portion of the metal sleeve C to the cable B as shown in FIG. A tape-shaped clamp M is wrapped around the outer periphery of L to fix the halved cover L as shown in FIG. 5 (d) and also to the metal sleeve C.

The penetration fire protection wiring structure constructed as above
When a fire occurs, the heat-foamable flame-resistant foam K, which is the material of the cover L, foams as shown in FIG. Filling and forming a foamable heat insulating layer N to exert heat insulation and flame resistance.

This penetration-type fireproof wiring structure has a simple structure, is inexpensive, has good workability during construction, and has various high effects such as long-lasting heat insulation and flame resistance effects. In order to keep the foam in a bent state during construction, it is necessary to further wrap it with tape to fix it.

Therefore, it has been strongly desired to develop a heat-resistant material which is a heat-foamable flame-resistant composition and can be kept in that state when it is bent or polymerized.

(Purpose of the Invention) The object of the present invention is to provide a heat-resistant composite body that can be easily bent during construction, can be maintained in the processed state, and can form an effective foam insulation layer when a fire occurs. Especially.

(Means for Solving the Problems) As shown in FIG. 1, the heat-resistant composite body of the present invention has a shapeability (the present invention) inside a molded body 1 made of a composition that foams when heated. In the above, the core material 2 having a "property of maintaining the shape when bent" is included therein.

(Operation) As shown in FIG. 2 (a), the heat-resistant composite of the present invention penetrates through the fireproof compartment A and projects from both outer surfaces of the compartment A from the outer periphery of the protruding portion of the metal sleeve C. It is used by winding it around the cable B as shown in FIG. 2 (b).

In this case, since the heat-resistant composite body 20 of the present invention has a shape-forming property, it does not loosen even if its end is unwound as shown in FIG. 2 (c).

In the heat-resistant composite body of the present invention constructed as shown in FIG. 3 (a) as described above, a composition that foams when heated by heat radiation such as flame at the time of fire is shown in FIG. 3 (b). As described above, foaming is performed to fill the gaps between the cables B and the like, and the foamed heat insulating layer 4 is formed to maintain the heat insulating and flame resistant effects.

 The effects of the present invention will be shown below in Examples.

(Example) FIGS. 1 (a) to 1 (d) are various examples of the heat resistant composite of the present invention.

In these figures, 1 is a molded body made of a composition that foams when heated, and 2 is a core material having shapeability.

1 (a) to 1 (c) are long linear or strip-shaped strips, and FIG. 1 (d) is a plate-shaped strip. Further, the heat-resistant composite body shown in FIG. 1 (a) is a composition in which a composition that foams when heated is molded into an elliptical cross section, and one core material 2 is internally provided inside the composition. The heat-resistant composite shown in b) is a composition in which a composition that foams when heated is molded into a rectangular cross section, and two core materials 2 are internally contained therein.

The heat-resistant composite body shown in FIG. 3C has a composition in which a foam is formed when it is heated in a circular cross section, and one core material 2 is incorporated therein.

The heat-resistant composite body shown in FIG. 3 (d) is formed by forming a heat-foamable refractory composition in the form of a strip and having a reticulated core material 2 therein.

The hardness and density of the composition that foams when heated may be appropriately set according to the application of the heat resistant composite, the required amount of deformation, the adhesion, and the like. The composition that foams when heated expands when heated as shown in FIG. 3 (b) to form the foamed heat insulating layer 4, and when heating is continued, the previously formed heat insulating layer peels off. Then, the next heat insulating layer is formed, and this operation is repeated to maintain the heat insulating effect for a long time. Examples of the composition that foams when heated include Phomox (trade name: manufactured by Bayer, West Germany) and Fire Stop (trade name: manufactured by Dow Corning Incorporated, USA).

Any number of the core materials 2 may be inserted inside the molded body 1 made of the composition that foams when heated as described above,
Any shape may be used. However, the core material 2
It should be noted that when the heat-resistant composite material is foamed when heated, the adhesiveness when wound around the heat-resistant composite is deteriorated and the heat-sensitive composite material is easily affected by heat.

Further, any material may be used as the material of the core material 2 as long as it has shapeability and has heat resistance to some extent.
Typical examples include annealed iron wire and high-purity aluminum. A shape memory alloy can also be used depending on the case.

(Effect of the Invention) The heat resistant composite of the present invention has the following effects.

Since the shape-imparting core material 2 is contained in the molded body 1, it is held in a wound state when wound around the outer circumference of a cable or the like. For this reason, it is possible to maintain a desired bent shape without using a separate stopper as in the prior art, which facilitates construction and improves workability.

Since the molded body 1 is exposed on the surface, when it is wound around the outer circumference of a cable or the like, the adhesion between the molded body 1 or the molded bodies 1 that contact each other is improved, and it becomes difficult for the molded body 1 to loosen after winding. Easy, workability is improved, and cost can be reduced accordingly.

Since the core material 2 is internally contained in the molded body 1, there are variations during construction (when there is no core material 2, the heat-resistant composite will extend if it is pulled too much, and the filling amount or facility amount will be significantly reduced. There is).

Since the core material 2 is internally contained in the molded body 1, even when a metal or the like is used for the core material 2, the core body 2 is not easily affected by heat during a fire, and the heat resistance and flame resistance of the molded body 1 are deteriorated. There is no.

Since the molded body 1 is composed of a composition that foams when heated, the molded body 1 foams when heated during a fire.
As a result, the molded body 1 expands in volume and the molded bodies 1 are in close contact with each other to form the foamable heat insulating layer 4, so that a more excellent heat insulating effect is exhibited.

Moreover, since the core material 2 having shapeability is internally contained in the molded body 1, when the molded body 1 foams to form the foamed heat insulating layer 4, the core material 2 restrains foaming of the molded body 1. Or
There is no possibility that the foamed heat insulating layer 4 is divided to form a gap therebetween, and there is no fear of hindering the smooth formation of the foamable heat insulating layer 4.

Even if the heating is further continued, the foamable heat insulating layer 4 formed earlier is peeled off, the molded body 1 on the inside is foamed, and the next foamable heat insulating layer 4 is formed.
Is formed. Since this is sequentially repeated, the heat insulating effect can be maintained for a long time.

For example, when changing the wiring of a cable that is installed in a fireproof wiring structure of a penetration part such as a wall or floor, the heat-resistant composite body 20 of the present invention wound around the outer circumference of the cable is easy to remove. Work becomes easy. Moreover, the heat-resistant composite body 20 can be removed and reused for construction, which is economical.

For example, it is easy to fill and insert the fireproof plates into each other or the gap between the fireproof door and the door.

If it is rolled into a ring and carried to the construction site and cut into the required length on the spot and used, it is easy to carry and handle, has good workability, and is practical.

[Brief description of drawings]

1 (a) to (d) are perspective views showing various examples of the heat resistant composite of the present invention, and FIGS. 2 (a) to (c) are walls using the heat resistant composite of the present invention. Fig. 3 is an explanatory view of the construction of the penetration fire protection wiring structure, and Fig. 3 is an explanatory view of the construction using the heat-resistant composite material of the present invention. Fig. (A) is normal, and Fig. (B) is a vertical section when a fire occurs. FIG. 4 is an explanatory view of a penetration fire protection wiring structure previously devised by the inventor of the present invention. FIG. 4A is a normal view, and FIG. FIG. 5 (a)-
(D) is construction explanatory drawing of the penetration part fire prevention wiring structure of FIG. 1 is a molded body made of a composition that is foamed when heated. 2 is a core material. 4 is a foam insulation layer. A is a fireproof partition. B is a cable. C is a metal sleeve. D is a metal sleeve protruding portion. F is a bushing.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Takuya Asami 6-1 Kashiwara, Ishioka-shi, Ibaraki Prefecture 6-1 Ask Central Research Institute Co., Ltd. (56) Bibliography 57-10180 (JP, Y2) 43714 (JP, Y2)

Claims (1)

(57) [Scope of utility model registration request] 1. A heat-resistant composite body comprising a molded body (1) made of a composition that foams when heated, and a core material (2) having a shape-forming property inside the molded body (1).