JPS58142813A - Pipe route covering construction and pipe route covering material - Google Patents

Abstract

PURPOSE:To prevent flames and smoke from passing through a pipe route by crushing it through such an arrangement wherein when a layer of expansive material covering a pipe route is caused to expand by heat, its expansion in the direction of outer circumference is restricted by a base material which is not expanded. CONSTITUTION:The outer circumference of such a portion protruded outside a wall 2 of a pipe 1 made of synthetic resin such as polychloride vinyl, etc. or a metal such as aluminum, lead, etc. is covered with a kind of pipe covering material 3. The covering material 3 is composed of a base material 3A which is not expanded by heat and a layer 3B of expansive material which is expanded by heat. The base material 3A is composed of a metal such as iron, aluminum stainless steel, etc., or inorganic substance of ceramics, asbestos, carbon, etc. such as fibers of these metals, alumina, etc., or such materials which are not expanded such as platelike, sheetlike and meshlike elements of organic substances such as these fibers, paper, etc. The expansion layer 3B is primarily composed of such substances that generate gases such as nitrogen gas, water, carbonic acid gas, organic solvent, etc. by thermally decomposing substances such as organic foaming agent such as azodicarboxylic amide, etc., inorganic compound having hydrate water such as silicate, lower fatty acid such as formate, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe covering structure that crushes the pipe to prevent fire damage, smoke, etc. from passing through the pipe in the event of a fire, and the pipe covering structure. This is a turtle regarding the pipe coating material used.

As is well known, buildings are equipped with pipes such as water and sewage pipes, electric wires, telephone wires, etc., and in the event of a fire◆, flames, smoke, etc. pass through the pipes, causing the fire to spread and smoke damage to increase. The main cause of this is the case that is constantly disputed.

The purpose of the present invention is to prevent the spread of fire and smoke damage caused by the above-mentioned pipes in the event of a fire. shall be.

The present invention will be explained based on embodiments shown in the drawings.

FIG. 1 shows a first embodiment. In Fig. 1, (1) is a pipe made of synthetic resin such as polyvinyl vinyl, polyethylene, polypropylene, glass woven *1 reinforced brass titanium, Boso Puden, etc., or metal such as aluminum or lead. The outer periphery of the portion protruding from the wall Q) of 1) is covered with a conduit covering material (3). The pipe covering material (3) is attached to the I! of the pipe (1) as shown in Fig. 2.
(2) The inner portion or the outer and outer portions may be coated.

The pipe covering material (3) consists of a base material (3) which does not substantially expand or contract and an expansion layer (3) B which is to be expanded by heat.

Base material 13) The base material is iron or aluminum. Metals such as stainless steel, fibers of these metals, ceramics such as alumina, silica, zirconia, asbestos, rock wool,
Glass, other inorganic materials such as foot grains, or paper made from these inorganic fibers.

It is made of a material that does not substantially expand or contract, such as a plate-like body, a sheet-like body, a rope-like body, a woven or knitted fabric, a non-woven fabric, etc., made of organic materials such as plastics. The base material (3) should have the property of not substantially expanding or contracting at the temperature at which the expansion layer (3) B expands, and it is also desirable that it does not emit harmful gases due to the high heat of a fire. From this point of view, it is preferable to select inorganic, nonflammable materials rather than organic materials. In addition, when using a construction method in which the pipe covering material (3) consisting of the base material (3) M or the base material (3) M and the expansion layer (3) B is wrapped around the pipe, the base material (3) It is desirable to have flexibility.

11 layer (3) B includes Azocica μponamide, Ay
Organic blowing agents such as bisisobutyronitrile, inorganic compounds with water of crystallization such as silica salts, boric acid fillers, sulfates, phenates, chromic acid salts, @acid salts, f! ): III salt.

Lower fatty acid salts such as oxalate, carbon II salt, monobicarbonate.

Alum, decomposed by the heat of the above organic foaming agents and organic solvent Kaburyu Y, etc. to produce Koso gas, water, lower fatty acids, #12
The main substance is a substance that releases gas such as acid gas and 41I# agent, and if desired, vinyl acetate resin or vinyl chloride resin is used as a binder in addition to the above substances.

Atari resin, methacrylic resin, styrene resin.

Polyethylene, polypropylene, fluororesin, acrylonitrile-butadiene copolymer, acrylonitrile) lJA/-
Butadiene-styrene copolymer.

Styrene-butadiene copolymer, styrene-butadiene block copolymer, vinyl acetate-ethylene copolymer, urethane resin, urea resin, melamine resin, phenol resin, resorcinol resin.

Epoxy resin, polyamide, polyester 7&/, natural rubber, #powder, polyvinyl resin, ayginic acid powder,
One or more types of natural resins such as cellulose, -gin, petroleum resins, synthetic resins, and semi-synthetic resins are mixed. Also, if you wish, use leg acid μ wrinkles, titanium 7 white.

Chrome yellow, carbon black, aluminum oxide, aluminum hydroxide, magnesium oxide, magnesium hydroxide, gypsum, silica, alumina, diconia 0 pieces
Fillers such as Stellai F, shirasu barn, vermikierite, perlite, lime, borax, river sand, cement, and slag may be added.I! If you use m1le, it is an anti-aging agent.

Inflatable layer (3) B or base material (3) and inflatable layer (3), which may contain ultraviolet absorber, @flame agent, and other additives.
When using the construction method of wrapping the pipe covering material (3) consisting of B around the pipe, it is desirable that the intumescent layer (3) B has flexibility, and the intumescent layer (3) B should be flexible in the event of a fire. It is necessary for the expansion to begin at high temperatures such as, for example, in the summer, and it is desirable that no expansion occur at all. Therefore, the expansion start temperature of the expansion layer (3)B is at least 10
The temperature is about 0°C or higher, preferably about 120°C or higher.

In order to form the structure shown in FIG. A method of coating the outer periphery of the pipe (1), a method of coating the outer periphery of the pipe (1) with an expansion layer (3) B, and then covering the outer periphery of the expansion layer (3) B with a base material (3) are applied. be done. When preparing the pipe covering material (3) first, at least cover the inflatable layer (3) B with a 74V film that is impermeable to gas and moisture [7] to prevent the 1141 layer (3) B from becoming sensitive. Desirably, such film materials include polyvinyl chloride, polyvinylidene amplification, acrylic resin, methacrylic resin, vinyl acetate resin, and styrene resin.

Urethane resin, epoxy resin, polyester.

Examples include synthetic resins such as ethylene-vinyl acetate copolymer, styrene-butadiene copolymer, and atarylonitrile-butadiene copolymer. The synthetic resin may be formed into a layer 74-5 in advance and then coated with the expanded layer #(3)B, or a small amount of emulsion or solution of these synthetic resins may be applied to the expanded layer (3)B. The base material (3) is an A-line knitted fabric or a non-woven fabric, which may form a film by drying.

If it is made of a porous material such as a rope, the base material (3) is also fI! with the above film! It is desirable to overturn this.

Preferred specific examples of the pipe covering material (3) consisting of the base material (3) and the expansion layer (3) B are shown below.

Pipe coating structure 1 Base material (3): Stainless steel wire mesh expansion layer + 3) B
: Water glass powder 10,000 parts by weight Acrylic emulgene 10 (50% by weight solid content) Aluminum hydroxide 100 Water glass #Liquid I
(O coulage: 96 solids content) 15 The above mixture is applied onto the base material (3) A and dried to obtain an intumescent layer (3) B.

Pipe coating structure 2 Base material (3) M: Glass cloth expansion layer (3) B: Potassium borate crystal 100 parts styrene sodium bicarbonate
Butadiene copolymer 30 Latex (40% solids by weight) Poxymethoxycetate A/12-ace Q, 5 Water
10 Apply the above mixture onto the base material (3) and dry it to form an intumescent layer (
3) Obtain s.

ag Base material (3) Mu: Aluminum thin film expansion layer (3) B: Azobisisobutylene trinitrate A15fi Lid part Vinyl acetate P resin Ema V resin 30 Water glass powder 100 Hydroxide ay1
Inflatable layer (3)B is obtained by applying the above mixture onto the base material (3) and drying it.

FIG. 3 shows a second sJ embodiment. In Figure 92, pipe (1) is connected to pipe (1) B and pipe (1) C via T-shaped joint (1) D at a position outside the wall (2). (1) The outer periphery of the D part is the same base material as in the first embodiment. (3) The foam and the expansion layer (3) B
The pipe is covered with a pipe covering material (3) consisting of.

In Figures 1 and 3, when the pipe covering structure is directly or indirectly exposed to flame in the event of a fire, the pipe (1) is damaged by the high heat of the flame (4) as shown in Figure 4. is softened, and the expansion layer (3) B #i expands, but since the expansion layer (3)B is restricted from expanding in the outer circumferential direction by the base material (3), it expands in the inner circumferential direction, that is, the pipe. (1) It expands in the direction of crushing it. Thus the pipe (1)
is crushed and the pipeline is cut off.

Since the present invention has the above-mentioned configuration, W
When the tension layer expands due to heat, it is restricted from expanding in the outer circumferential direction by the base material, so it expands in the inner circumferential direction, crushing the pipe, and causing the pipe to become exposed to flames and smoke. If it passes through, it will be reliably prevented.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a first embodiment of the present invention, Fig. 2 is a side sectional view showing a pipe covering structure provided inside and outside the wall, and Fig. 3 is a 2'ip7! A side sectional view of the embodiment, FIG. 4 is a side sectional view showing a state in which the pipe is crushed in the event of a fire or the like. In the figure, (1), (1)mu, (1)31, (1
)O...Pipe, (3)...Pipe covering material, (3
) M... Base material, (3) B... Expanding layer Patent applicant Aron Kasei Co., Ltd. 7t'll! 1 7172 Figure 1745a

Claims (1)

[Scope of Claims] 1. Electrical circuit covering structure 2 consisting of a conduit, an expansion layer that covers the outer circumference of the conduit and is to be expanded by heat, and a substantially non-expandable base material that covers the outer circumference of the 118 layer; Pipe covering material consisting of a base material that does not substantially expand and contract and an expansion layer provided on the base material that expands by heat The non-flammable base material is made of non-combustible material. 4. Patent claim m1ll 1. , 2. and λ, the expansion layer to be expanded by heat is composed of an inorganic compound that foams by heat and a synthetic resin binder that binds the inorganic compound. 5. Claims 1. In this case, the conduit is a thermoplastic pipe).