JPH11131631A - Fire resistive covering material and fitting structure thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire resistive covering material capable of easy work execution and a fitting structure thereof. SOLUTION: A monolithic fire resistive covering material main body 2 having softness and flexibility 2 and a shape retaining material 3 having self-supporting property are superposed one on the other. The fire resistive covering material main body 2 is a fire resisting non-vulcanized rubber composition formed by containing netralized thermap expansive graphite and an inorganic filler in non-vulcanized rubber, and the shape retaining material 3 is formed by a thin- walled metallic plate material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refractory coating excellent in workability.

[0002]

2. Description of the Related Art Conventionally, in applying a fire-resistant coating material to a steel structure such as a beam or a column in a steel-framed building, a molded plate formed into a certain shape with asbestos, rock wool, calcium silicate, etc. as a main material is used. A method of sticking this with an adhesive or a nail has been implemented. However, in the case of coating with the above-mentioned molded plate, since the refractory coating material is a hard molded plate, it is difficult to apply the coating to the side surface portion and the bent portion of the steel frame, and it is cut according to the shape and dimensions of the steel frame. However, there are many inconveniences such as requiring a special cutting tool such as a diamond cutter and generating a large amount of dust at the time of cutting.

In order to solve the problem of applying a fire-resistant coating material using the above-mentioned molded plate, an irregular-shaped fire-resistant coating material having flexibility and flexibility is disclosed in Japanese Patent Publication No. Sho 62-156559 and Japanese Patent Publication No. Hei. This is described in Japanese Patent Application Laid-Open No. 4-37215. The fire-resistant coating material described in JP-B-62-156559 uses a felt material formed mainly of inorganic fibers, and the latter fire-resistant coating material described in JP-B-4-37215 uses inorganic fibers. The main material is a wet fiber felt material impregnated with colloidal silica, which is attached to the steel frame surface and dried and cured to form a fire-resistant coating layer.

[0004]

However, the construction of the conventional fireproof covering material described in the above-mentioned publication wraps a sheet-like material around a steel frame and fixes it while holding it down. However, there is a problem that the work on the ceiling beam is particularly difficult because the work is directed upward. Further, the conventional fireproof covering material described in the above-mentioned publication has flexibility, so that when an interior base material such as a gypsum board is constructed thereon, it is necessary to separately attach a support member.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a fire-resistant covering material which can be easily applied and a structure for mounting the same.

[0006]

According to the first aspect of the present invention,
This is a fire-resistant coating material obtained by polymerizing an irregular-shaped fire-resistant coating material body having flexibility and flexibility, and a shape-holding material having self-supporting properties.

According to a second aspect of the present invention, there is provided a fire-resistant coating material obtained by polymerizing a heat-expandable fire-resistant coating material body which expands when heated and a self-supporting shape-retaining material.

According to a third aspect of the present invention, in the refractory coating material according to the second aspect, the thermally expandable refractory coating material body has flexibility and flexibility.

According to a fourth aspect of the present invention, there is provided the refractory coating material according to the first to third aspects, wherein the refractory coating material body comprises a non-vulcanized rubber, a phosphorus compound, a neutralized heat-expandable graphite, and an inorganic material. It is a refractory non-vulcanized rubber composition containing a filler.

According to a fifth aspect of the present invention, there is provided the fire-resistant coating material according to any one of the first to third aspects, wherein the fire-resistant coating material body comprises a resin component containing an epoxy resin, a phosphorus compound, neutralized heat-expandable graphite, And a fire-resistant resin composition containing an inorganic filler.

According to a sixth aspect of the present invention, in the refractory covering material according to the first to fifth aspects, the shape retaining material is formed of a thin metal plate.

According to a seventh aspect of the present invention, there is provided the mounting structure for a fire-resistant coating material according to any one of claims 1 to 6, wherein the fire-resistant coating material is attached to a steel frame such as a beam or a column with a gap therebetween. is there.

[0013] The invention according to claim 8 is characterized in that the refractory coating material includes a one-side coating material for coating the outer peripheral surface on one side of a cross section of a steel frame such as a beam or a column, and a second-side coating material for coating the outer peripheral surface on the other side of the cross section. 8. The mounting structure for a fire-resistant coating material according to claim 1, wherein the one-side coating material and the other-side coating material are attached to a steel frame by joining their edges to each other. .

According to the first aspect of the present invention, the irregular-shaped refractory covering body having flexibility and flexibility includes:
For example, a material using a felt material formed mainly of inorganic fibers, or a wet fiber felt material impregnated with inorganic fibers and colloidal silica, attached to a shape maintaining material, and dried and cured. And the like to form a refractory coating layer.

In the present invention according to the second aspect, the heat-expandable refractory coating material body which expands upon heating includes, for example,
Examples of the resin composition include heat-expandable graphite, vermiculite, sodium silicate, sodium borate, and the like. Medicicut (manufactured by Mitsui Kinzoku Co., Ltd.), Danseal (manufactured by Furukawa Techno Materials), and fire barrier (Manufactured by Sumitomo 3M).

In the first and second aspects of the present invention, the shape-holding material having self-supporting properties may be any material that does not melt at a heating temperature set according to a heating grade in a fire resistance test. Specifically, metal materials such as steel, stainless steel, aluminum, and copper, and F
RP is good. The thickness of the shape maintaining material is 0.1 to 6.
0 mm is preferred, and less than 0.1 mm is not preferred because shape retention is impaired. In addition, 6.0m
If it is larger than m, workability is impaired when used with processing, which is not preferable.

The surface treatment of the shape-retaining material may or may not be performed, but in the case of a rust-prone steel material, it is preferable to perform a surface treatment such as hot-dip galvanizing. Alternatively, a material subjected to a cosmetic treatment such as painting or film wrap may be preferable because it can be used as a surface material as it is.

In the present invention, the refractory coating material is obtained by polymerizing the main body of the refractory coating material and the shape-retaining material. A shape that is later processed into a shape that is easy to construct, a shape that is pre-processed into a shape that is easy to construct, and a fire-resistant coating material body that is later laminated and polymerized,
Any of them may be used. The state of polymerization may be all or part of the state. Adhesion, adhesion, tape fixation, pressure bonding, fusion,
It is preferable that they are integrated by means such as goby folding.

In the present invention according to claim 4, the content of the refractory non-vulcanized rubber composition is such that the content thereof is 100 parts by weight of the non-vulcanized rubber and the phosphorus compound is neutralized and thermally expanded. The total amount is 20 to 200 parts by weight with the exothermic graphite, the inorganic filler is 50 to 500 parts by weight, and the weight ratio of the heat-expandable graphite to the neutralized phosphorus compound is from 9: 1 to 1: 9. Is good.

The unvulcanized rubber is not particularly limited.
For example, natural rubber, isoprene rubber, butadiene rubber,
Examples include styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, ethylene-propylene rubber, acrylic rubber, urethane rubber, and the like. These may be vulcanized after adding the phosphorus compound, graphite and inorganic filler.

In the present invention according to claims 4 and 5, the phosphorus compound is not particularly restricted but includes, for example, red phosphorus; various phosphoric esters (triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl). Phosphate, xylenyl diphenyl phosphate, etc.); metal phosphates (sodium phosphate, potassium phosphate, magnesium phosphate, etc.); ammonium polyphosphates;

Embedded image And the like.

In the formula, R ¹ and R ³ are hydrogen, and have ^{1 to} 16 carbon atoms.
Represents a linear or branched alkyl group or an aryl group having 6 to 16 carbon atoms. R ² is a hydroxyl group, a linear or branched alkyl group having 1 to 16 carbon atoms, a linear or branched alkoxyl group having 1 to 16 carbon atoms, an aryl group having 6 to 16 carbon atoms, Represents an aryloxy group represented by Formulas 6 to 16.

The compounds represented by the above formula include, for example, methylphosphonic acid, dimethyl methylphosphonate, ethylphosphonic acid, propylphosphonic acid, butylphosphonic acid, butylphosphonic acid, 2-methylpropylphosphonic acid, t-butylphosphonic acid 2,3-dimethyl-butylphosphonic acid, octylphosphonic acid, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphinic acid, methylethylphosphinic acid, methylpropylphosphinic acid, diethylphosphinic acid, dioctylphosphinic acid, phenylphosphinic acid, diethyl Examples thereof include phenylphosphinic acid, diphenylphosphinic acid, and bis (4-methoxyphenyl) phosphinic acid.

In the present invention, as the phosphorus compound, ammonium polyphosphates are particularly preferred. Examples of the ammonium polyphosphates include ammonium polyphosphate, melamine-modified ammonium polyphosphate, and the like. As a commercially available product, "AP46" manufactured by Hoechst
2 "," Sumisafe P "manufactured by Sumitomo Chemical Co., Ltd.," Terage C60 "manufactured by Chisso Corporation, and the like.

When a commercially available red phosphorus is used as the phosphorus compound, it is preferable that the surface of the red phosphorus particles is coated with a resin from the viewpoint of moisture resistance and safety such as not spontaneously igniting during kneading. The phosphorus compound may be used alone,
More than one species may be used in combination.

In the present invention according to claims 4 and 5, the heat-expandable graphite is a conventionally known substance, and powders such as natural graphite, pyrolytic graphite, pyrolytic graphite and Kish graphite are concentrated sulfuric acid, nitric acid and selenium. Treated with an inorganic acid such as an acid and a strong oxidizing agent such as concentrated nitric acid, perchloric acid, perchlorate, permanganate, dichromate, hydrogen peroxide, etc. to form a graphite intercalation compound Is a crystalline compound that maintains the layered structure of carbon.

In the present invention, the heat-expandable graphite obtained by the acid treatment as described above is further neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound, or the like. Examples of the aliphatic lower amine include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, butylamine and the like. Examples of the alkali metal compound and alkaline earth metal compound include hydroxides, oxides, carbon salts, sulfates, and organic acid salts of potassium, sodium, calcium, barium, magnesium and the like. Specific examples of the heat-expandable graphite thus neutralized include, for example,
"CA60S" (Nippon Kasei), "GREP-EG"
(Made by Tosoh Corporation).

The particle size of the neutralized thermally expandable graphite used in the present invention is preferably 20 to 200 mesh. If the particle size is smaller than 200 mesh, the degree of expansion of graphite is small, and a desired refractory and heat-insulating layer cannot be obtained. When the particle size is larger than 20 mesh, the degree of swelling is large, but when kneading with the resin, the dispersibility is poor, and a decrease in physical properties cannot be avoided.

The inorganic filler used in the present invention according to claims 4 and 5 is not particularly limited, and examples thereof include silica, diatomaceous earth, alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, and tin oxide. , Antimony oxide, ferrites, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, basic magnesium carbonate,
Calcium carbonate, magnesium carbonate, zinc carbonate, barium carbonate, dawn knight, hydrotalcite, calcium sulfate, barium sulfate, gypsum fiber, calcium silicate,
Talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite, imogolite, sericite, glass fiber, glass beads, silica balloon,
Aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balloon, charcoal powder, various metal powders, potassium titanate, magnesium sulfate “MOS”, lead zirconate titanate, aluminum borate, molybdenum sulfide, carbonized Silicon, stainless steel fiber, zinc borate, various magnetic powders, slag fiber, fly ash, dehydrated sludge, and the like.

As the above-mentioned inorganic filler, a water-containing inorganic substance is preferably dehydrated during heating and has an endothermic effect, from the viewpoint of increasing heat resistance. Specifically, calcium hydroxide,
It is preferable to use magnesium hydroxide, aluminum hydroxide, or the like. Further, a metal salt or oxide of a metal belonging to Group II or Group III of the periodic table is preferable from the viewpoint of enhancing shape retention because it foams during combustion to form a foamed fired product. Specific examples include calcium carbonate and magnesium carbonate.

In the present invention, the resin component containing an epoxy resin is not particularly limited, but is basically obtained by reacting a monomer having an epoxy group with a curing agent. . Examples of the monomer having an epoxy group include bifunctional glycidyl ethers such as polyethylene glycol, polypropylene glycol, neopentyl glycol, 1,6-hexanediol, trimethylolpropane, and propylene oxide-bisphenol A. , Hydrogenated bisphenol A
Glycidyl ester type, hexahydrophthalic anhydride type, tetrahydrophthalic anhydride type, dimer acid type, p-oxybenzoic acid type, etc. are polyfunctional glycidyl ether types, phenol novolak type, orthocresol Novolak type, DPP novolak type, dicyclopentadiene / phenol type, and the like. These may be used alone or as a mixture of two or more.

As the curing agent, as a polyaddition type,
Examples of the catalyst type include polyamines, acid anhydrides, polyphenols and polymercaptans, and tertiary amines, imidazoles, Lewis acid complexes and the like. The curing method of these epoxy resins is not particularly limited, and can be performed by a known method.

According to the present invention, the fire-resistant resin composition has a fire-resistance performance of a resin component containing an epoxy resin, a phosphorus compound, neutralized heat-expandable graphite, and an inorganic filler. It is expressed when the four components exhibit their properties. Specifically, at the time of heating, the heat-expandable graphite forms an expanded heat-insulating layer to prevent the transfer of heat. that time,
Since the epoxy resin is used, the resin component also contributes as an expansion heat insulating layer as a char (carbonized layer), and has excellent shape retention after expansion due to a crosslinked structure. At this time, the inorganic filler increases the heat capacity, and the phosphorus compound has the ability to retain the shape of the expanded heat-insulating layer and the filler.

As described above, the resin component containing an epoxy resin in the present invention is characterized in that the carbonized layer formed at the time of heating exhibits heat insulating properties and shape retention properties, but other resins within a range not impairing the effects. May be added. As a preferable range, the epoxy resin (epoxy monomer and curing agent) 1 and the other resin should be within 5 or less.

According to the present invention, the main body of the heat-expandable fire-resistant coating material, which is a fire-resistant resin composition containing an epoxy resin, has flexibility and flexibility. . Therefore, the following method can be used to develop the flexibility of the epoxy resin. (1) a technique for increasing the molecular weight between crosslink points, (2) a technique for decreasing the crosslink density, (3) a technique for introducing a soft molecular structure, (4) a technique for adding a plasticizer, and (5) an interpenetrating network structure. (6) a method of dispersing and introducing rubber-like particles, and (7) a method of introducing microvoids.

(1) In order to increase the molecular weight between cross-linking points, the distance between cross-linking points is increased by preliminarily reacting with an epoxy monomer having a long molecular chain and / or a curing agent to increase flexibility. Express. For example, polypropylene diamine or the like is preferably used as a curing agent. (2) A method of reducing the crosslink density is to reduce the crosslink density in a certain region and to exhibit flexibility by reacting with an epoxy monomer having a small number of functional groups and / or a curing agent. For example, a bifunctional amine as a curing agent,
A monofunctional epoxy or the like is used as an epoxy monomer. (3) The method of introducing a soft molecular structure is to introduce flexibility by introducing an epoxy monomer and / or a curing agent having a soft molecular structure. For example, a heterocyclic diamine is used as a curing agent, and an alkylene diglycol glycidyl ether is used as an epoxy monomer. (4) As a method of adding a plasticizer, for example, DOP
(Dioctyl phthalate), tar, petroleum resin and the like. (5) In the method of forming an interpenetrating network (IPN), a resin having another soft structure is introduced between the crosslinked structures of the epoxy resin to exhibit flexibility. (6) The method of dispersing and introducing rubber-like particles involves mixing and dispersing liquid or granular rubber particles in an epoxy resin matrix, and for example, polyester ether or the like can be used. (7) The method of introducing microvoids is to introduce flexibility by introducing microvoids of 1 micron or less into an epoxy resin matrix.
000-5000 polyethers are added.

In the present invention, the total amount of the phosphorus compound, the neutralized thermally expandable graphite and the inorganic filler is 100 parts by weight of the resin component containing the epoxy resin.
It is preferable to use in the range of 200 to 600 parts by weight. 2
If it is less than 00 parts by weight, sufficient fire resistance cannot be obtained,
If the amount exceeds 600 parts by weight, mechanical properties are greatly reduced.

With respect to the amount of each filler, 50 to 150 parts by weight of the phosphorus compound, 15 to 40 parts by weight of the neutralized heat-expandable graphite, and 30 parts by weight of the inorganic filler are based on 100 parts by weight of the resin component. It is preferable to use it in the range of 500 parts by weight.
If the amount of the phosphorus compound is less than 50 parts by weight, sufficient shape retention cannot be obtained. If the amount exceeds 150 parts by weight, mechanical properties are greatly reduced. If the heat-expandable graphite is less than 15 parts by weight, sufficient expandability cannot be obtained,
If the amount exceeds 40 parts by weight, the mechanical properties are similarly greatly reduced. If the amount of the inorganic filler is less than 30 parts by weight, sufficient fire resistance cannot be obtained, and if it exceeds 500 parts by weight, the mechanical properties are greatly reduced.

In the present invention, by combining the heat-expandable graphite and the phosphorus compound, scattering of the heat-expandable graphite at the time of combustion is suppressed, and the shape is maintained. Therefore, if the amount of the heat-expandable graphite is too large, the expanded graphite at the time of combustion is scattered, and a sufficient expanded heat-insulating layer cannot be obtained at the time of heating. Conversely, if the phosphorus compound is too much, the heat-insulating layer is not enough, and the desired effect is obtained. Therefore, it is preferable that the weight ratio of the heat-expandable graphite to the phosphorus compound is 9: 1 to 1: 100.

In the present invention, steel, stainless steel, aluminum, copper or the like can be used as the metal plate. The thickness is preferably from 0.1 to 6.0 mm. If the thickness is less than 0.1 mm, shape retention is impaired, which is not preferable. On the other hand, if it is larger than 6.0 mm, workability is impaired when used with processing, which is not preferable. Further, the thickness of the metal plate material does not need to be uniform, and the pattern may be formed by changing the thickness in the cross section.

(Function) The fire-resistant coating material according to the first aspect is obtained by polymerizing an irregular-shaped fire-resistant coating material body having flexibility and flexibility and a shape-holding material having self-supporting properties. Therefore, when it is attached and fixed to a steel frame, the shape is maintained, and the construction is facilitated.

According to the second aspect of the present invention, the refractory coating material is formed by polymerizing a heat-expandable refractory coating material body that expands when heated and a self-supporting shape-retaining material. At the time of fixing, the shape is maintained and the construction becomes easy. In addition, the refractory coating material main body forms an expanded heat insulating layer when heated, and has remarkable fire resistance by maintaining its shape.

According to the third aspect of the present invention, since the heat-expandable refractory coating material body has flexibility and flexibility,
Processing is easy.

According to a fourth aspect of the present invention, there is provided a fire-resistant coating material comprising a non-vulcanized rubber, a phosphorus compound, a neutralized heat-expandable graphite, and an inorganic filler. Since it is a vulcanized rubber composition, it forms an insulative heat insulating layer when heated, and has remarkable fire resistance by maintaining its shape.

The fire-resistant coating material according to claim 5 is characterized in that the fire-resistant coating material body includes a phosphorus compound,
Neutralized heat-expandable graphite, and a fire-resistant resin composition containing an inorganic filler, so that an expanded heat-insulating layer is formed when heated and the fire-resistant resin composition retains its shape. Having.

Since the shape-retaining material is made of a thin metal plate, it is resistant to heat and can be easily processed according to the shape of the steel frame to be coated.

In the mounting structure of the fire-resistant coating material according to the seventh aspect, the fire-resistant coating material according to the first to sixth aspects is attached to a steel frame such as a beam or a column with a gap therebetween, so that it is insulated by an air layer. The thickness of the refractory coating can be reduced accordingly. In particular, in the case of the fireproof covering material according to any one of claims 2 to 5, wherein the fireproof covering material body expands during a fire to exhibit fireproof performance, the gap is expanded and filled, so that the fireproof performance can be reliably ensured.

According to the eighth aspect of the present invention, the refractory coating covers the outer peripheral surface on one side of the cross section of a steel frame such as a beam or a column and the outer peripheral surface on the other side of the cross section. It is divided into the other side covering material, and the one side covering material and the other side covering material are
Since the edges are joined to each other and attached to the steel frame, the attachment can be easily performed.

[0049]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 4
1 is a refractory coating material, FIG. 1 (a) is a perspective view thereof, FIG. 1 (b) is a cross-sectional view, and FIG. 2 is processed according to the shape of a steel frame to be coated. FIG. 3 is a perspective view of the refractory coating material, FIG. 3 is a cross-sectional view showing a structure for mounting the refractory coating material, and FIG. 4 is an explanatory diagram showing a manufacturing process of the refractory coating material of FIG.

Reference numeral 1 denotes a refractory coating material. The refractory coating material 1 shown in FIG. 1 is wound in a coil shape before processing, and the refractory coating material 1 shown in FIG. It was processed together. The refractory coating material 1 is formed by polymerizing an indefinite refractory coating material main body 2 having flexibility and flexibility described later and a self-supporting shape holding material 3. The shape maintaining member 3 is formed of a thin metal plate made of a galvanized steel plate having a thickness of 0.2 mm.

The refractory coating material body 2 uses butyl rubber (isobutylene / isoprene rubber having a Mooney viscosity (100 ° C.) = 47 and an unsaturation degree = 2.0) as a non-vulcanized rubber, and polyphosphorus as a phosphorus compound. Using ammonium phosphate (Sumisafe P, manufactured by Sumitomo Chemical Co., Ltd.) and t-butylphosphonic acid (manufactured by Wako Pure Chemical Industries, Ltd.), and using CA60S (manufactured by Nippon Kasei Co., Ltd.) as neutralized thermally expandable graphite,
Aluminum hydroxide (B703S,
Nippon Light Metal Co., Ltd.) and magnesium hydroxide (Kisuma 5)
B, manufactured by Kyowa Chemical Industry Co., Ltd.).

The content of each of the non-vulcanized rubber, the phosphorus compound, the neutralized heat-expandable graphite, and the fire-resistant non-vulcanized rubber composition comprising the inorganic filler is the same as that of the non-vulcanized rubber 100. The total amount of the phosphorus compound and the neutralized thermally expandable graphite is 20 to 200 parts by weight, the inorganic filler is 50 to 500 parts by weight, and the neutralized thermally expandable graphite is phosphorus. The components were melt-kneaded using a roll at a compounding ratio of 9: 1 to 1: 9 to obtain a resin composition. This resin composition was continuously pressed at 140 ° C. to obtain a long sheet-shaped refractory coating material main body 2 having a thickness of 3 mm.

A method for manufacturing the refractory coating material 1 will be described with reference to FIG. Unwind the coil 3 of the shape-retaining material 3 (galvanized steel plate), and apply the primer coating coater P
Apply a primer according to 1 and dry in oven P2. Then, an adhesive is applied to the primer-coated shape holding material 3 with an adhesive application coater P3, heated at a predetermined temperature in an oven P4, and the sheet-like refractory coating obtained in the above step is obtained by the laminating roll P5. Lamination polymerization is performed while adhering to the material body 2. The release paper 6 is adhered to the surface of the fire-resistant coating material 1 obtained as described above and wound up in a coil shape to obtain the coil-shaped fire-resistant coating material 1 as shown in FIG. At this time, the laminated polymerized refractory coating material 1 is cut into a cutting machine P6.
May be cut into a predetermined length to form a flat plate.

Next, the long sheet-like refractory covering material 1 obtained in the above-mentioned process is processed into a predetermined shape by roll forming or the like in accordance with the shape of the steel frame 4 described later. The steel frame 4 of the present embodiment is made of lightweight C-shaped steel and forms floor beams and ceiling beams of a frame structure of a building unit (not shown). A plurality of building units are arranged side by side to form a unit building, and have a box-shaped frame structure including four pillars and a ceiling beam and a floor beam spanned between the pillars. .

As shown in FIG. 2, the processed refractory coating material 1 is a long body bent in a substantially U-shaped cross section with the shape holding material 3 facing outward, and one of the U-shaped shapes. A mounting piece 11 whose tip is bent downward at a right angle and a U-shaped mounting piece 12 whose other tip is bent 180 degrees are formed.

As shown in FIG. 3, the steel frame 4 is covered with the bent refractory coating material 1, and at this time, the tip 43 of the steel frame 4 is attached to the U-shaped mounting piece 12. Then, one of the mounting pieces 11 is brought into contact with the bottom piece 41 of the steel frame 4 and fixed with screws 5 for mounting. 42 is steel frame 4
The side piece 42 is formed by bending both sides of the bottom piece 41, and the tip of the side piece is bent inward to form a tip piece 43. In this case, the steel frame 4
The bottom piece 41 and the lower side piece 42 are coated with a fire-resistant coating material or a floor material made of steel to be an adjacent beam.

The mounting structure of the refractory coating 1 mounted as described above has a gap H provided between the refractory coating 1 and the steel frame 4 as shown in FIG. Gap H is steel frame 4
Is formed between the side piece 42 and the tip piece 43.

As described above, the fire-resistant coating material 1 of this embodiment is formed by laminating an irregular-shaped fire-resistant coating material body 2 having flexibility and flexibility, and a shape-holding material 3 having self-supporting properties. Since it is formed by polymerization, when it is attached to the steel frame 4 and fixed, the shape is maintained, and the construction is facilitated.

Further, in the fire-resistant coating material 1 of this embodiment, the fire-resistant coating material main body 2 contains a phosphorus compound, neutralized heat-expandable graphite, and an inorganic filler in a non-vulcanized rubber. Since it is a fire-resistant non-vulcanized rubber composition, it has a remarkable fire resistance by forming an expanded heat-insulating layer at the time of heating and maintaining its shape.

In addition, since the shape retaining material 3 of the refractory coating material 1 of this embodiment is formed of a thin steel plate, it is resistant to heat and can be easily bent in accordance with the shape of the steel frame 4 to be coated. It is.

Further, in the mounting structure of the refractory coating material 1 of the present embodiment, since it is mounted with the gap H formed in the steel frame 4 forming the beam, it is insulated by the air layer, and the refractory coating material 1 is accordingly reduced. Can be reduced in thickness. In particular, according to the refractory coating material 1 of the present embodiment in which the refractory coating material body 2 foams and exhibits fire resistance performance in the event of a fire, the gap H is foamed and filled, so that the fire resistance performance can be reliably ensured.

FIGS. 5 and 6 show another embodiment of the present invention. FIG. 5 is a perspective view of a refractory coating, and FIG. 6 is a sectional view showing a mounting structure of the refractory coating.

Reference numeral 1A denotes a refractory coating material. The refractory coating material 1A is, as shown in FIG.
It is obtained by polymerizing the shape holding material 3A having self-supporting properties. The refractory coating material main body 2A has a thermal expansion property that expands when heated as described later, and has flexibility and flexibility. The shape maintaining member 3 is formed of a thin metal plate made of a galvanized steel plate having a thickness of 0.2 mm.

The main body 2A of the fire-resistant coating material is a bisphenol F type (manufactured by Yuka Shell Co., Ltd.) as an epoxy monomer.
As a curing agent, a diamine-based curing agent (manufactured by Yuka Shell Co., Ltd.)
Using ammonium polyphosphate (AP422, manufactured by Hoechst) as a phosphorus compound, CA60S (manufactured by Nippon Kasei Co., Ltd.) as neutralized thermally expandable graphite, and water as an inorganic filler. Aluminum oxide (B7
03S, manufactured by Nippon Light Metal Co., Ltd.) and calcium carbonate (Whiteton BF-300, manufactured by Bihoku Powder Chemical Co., Ltd.).

The respective contents of the resin component (epoxy monomer and curing agent) containing the epoxy resin, the phosphorus compound, the neutralized heat-expandable graphite, and the inorganic filler, are as described above. The total amount of the phosphorus compound and the neutralized heat-expandable graphite is 20 to 200 parts by weight, and the inorganic filler is 50 to 500 parts by weight based on 100 parts by weight of the resin component.
Each component was kneaded using a roll at a mixing ratio of 9 parts by weight to 9 parts by weight of the neutralized heat-expandable graphite: phosphorus compound to obtain a monomer mixture. This monomer mixture was continuously cured at 140 ° C. to obtain a long sheet-shaped refractory coating material main body 2A having a thickness of 3 mm.

The method of manufacturing the refractory coating material 1A is the same as that of the first embodiment. A primer is applied to the shape-retaining material 3A, dried, an adhesive is applied, and heat treatment is performed. Lamination polymerization is performed while adhering to the obtained sheet-like refractory coating material main body 2A. The refractory coating material 1A shown in FIG.
The above laminated polymer is cut into a predetermined length to form a flat plate.

Next, the long sheet-like refractory covering material 1A obtained in the above process is processed into a predetermined shape by roll forming or the like in accordance with the shape of the steel frame 4A described later. The steel frame 4A of this embodiment constitutes a pillar of a unit building, and is a square tube-shaped steel.

The refractory covering material 1A is divided into a one-side covering material 1B for covering one outer peripheral surface of the steel frame 4A and a second-side covering material 1C for covering the other outer peripheral surface. And the other-side covering material 1C are attached to the iron 4A bone by joining their edges 11B and 12C and 12B and 11C to each other. A gap H is provided between the steel frame 4A and the one-side covering material 1B or the multi-side covering material 1C.

In the fire-resistant coating material 1A of the present embodiment, the fire-resistant coating material body 2A contains a resin component containing an epoxy resin, a phosphorus compound, neutralized heat-expandable graphite, and an inorganic filler. Since it is a refractory resin composition, it has remarkable fire resistance by forming an expandable heat insulating layer at the time of heating and further maintaining its shape.

The refractory coating material 1A is made of a shape-retaining material 3A.
However, since it is formed of a thin metal plate, it is resistant to heat and can be easily processed according to the shape of the steel frame 4A to be coated.

Further, in the mounting structure of the refractory coating material 1A of this embodiment, the refractory coating material 1A covers the outer peripheral surface of one side of the cross section of the steel frame 4A and the outer peripheral surface of the other side of the cross section. And the other-side covering material 1C, and the one-side covering material 1B and the other-side covering material 1C are attached to the steel frame 4A with their edges joined to each other, so that attachment and construction can be easily performed.

[0072]

According to the first aspect of the present invention, there is provided a fire-resistant coating material obtained by polymerizing an irregular-shaped fire-resistant coating material body having flexibility and flexibility, and a self-supporting shape holding material. Therefore, the shape is maintained and the construction is facilitated when attaching and fixing to a steel frame.

According to the second aspect of the present invention, the refractory coating material is formed by polymerizing a thermally expandable refractory coating material body that expands when heated and a self-supporting shape-retaining material. At the time of fixing, the shape is maintained and the construction becomes easy. In addition, the refractory coating material main body forms an expanded heat insulating layer when heated, and has remarkable fire resistance by maintaining its shape.

According to the third aspect of the present invention, the main body of the heat-expandable refractory material has flexibility and flexibility.
Processing is easy.

According to a fourth aspect of the present invention, there is provided a fire-resistant coating material comprising a non-vulcanized rubber containing a phosphorus compound, neutralized heat-expandable graphite, and an inorganic filler. Since it is a vulcanized rubber composition, it forms an insulative heat insulating layer when heated, and has remarkable fire resistance by maintaining its shape.

The fire-resistant coating material according to claim 5, wherein the fire-resistant coating material main body includes a phosphorus compound,
Neutralized heat-expandable graphite, and a fire-resistant resin composition containing an inorganic filler, so that an expanded heat-insulating layer is formed when heated and the fire-resistant resin composition retains its shape. Having.

In the fire-resistant coating material according to the sixth aspect, since the shape holding material is formed of a thin metal plate material, it is resistant to heat and can be easily processed according to the shape of the steel frame to be coated.

In the mounting structure of the fire-resistant coating material according to the seventh aspect, since the fire-resistant coating material according to the first to sixth aspects is attached to a steel frame such as a beam or a column with a gap therebetween, it is insulated by an air layer. The thickness of the refractory coating can be reduced accordingly. In particular, in the case of the fireproof covering material according to any one of claims 2 to 5, wherein the fireproof covering material body expands during a fire to exhibit fireproof performance, the gap is expanded and filled, so that the fireproof performance can be reliably ensured.

In the structure for mounting a fire-resistant coating material according to the present invention, the fire-resistant coating material covers the outer peripheral surface on one side of the cross section of a steel frame such as a beam or a column and the outer peripheral surface on the other side of the cross section. It is divided into the other side covering material, and the one side covering material and the other side covering material are
Since the edges are joined to each other and attached to the steel frame, the attachment can be easily performed.

[Brief description of the drawings]

FIG. 1 is an embodiment of a refractory coating material of the present invention,
(A) is a perspective view, and (B) is a sectional view.

FIG. 2 is a perspective view of a refractory coating material processed according to the shape of a steel frame to be coated.

FIG. 3 is a cross-sectional view illustrating a mounting structure of a fireproof covering material.

FIG. 4 is an explanatory view showing a manufacturing process of the refractory coating material of FIG.

FIG. 5 is a perspective view of a refractory coating according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a mounting structure of a fireproof covering material.

[Explanation of symbols]

 1, 1A Fireproof coating material 2, 2A Fireproof coating material body 3, 3A Shape retaining material 4, 4A Steel frame 1B One side coating material 1C Other side coating material H Gap

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaki Tono 2-1 Shimomoto-cho, Mishima-gun, Osaka Sekisui Chemical Industry Co., Ltd. (72) Inventor Bunji Yamaguchi 2-1 Shimomoto-cho, Mishima-gun, Osaka Sekisui Chemical Industry Co., Ltd.

Claims (8)

[Claims] 1. A fire-resistant covering material obtained by polymerizing an irregular-shaped fire-resistant covering material body having flexibility and flexibility and a shape-holding material having self-supporting properties. 2. A refractory coating material obtained by polymerizing a thermally expandable refractory coating material body that expands when heated and a self-supporting shape retaining material. 3. The fire-resistant coating material according to claim 2, wherein the heat-expandable fire-resistant coating material body has flexibility and flexibility. 4. The fire-resistant coating material body is a fire-resistant non-vulcanized rubber composition comprising a non-vulcanized rubber, a phosphorus compound, neutralized heat-expandable graphite, and an inorganic filler. The refractory coating material according to claim 1, wherein: 5. The fire-resistant coating material body is a fire-resistant resin composition comprising a resin component containing an epoxy resin, a phosphorus compound, neutralized heat-expandable graphite, and an inorganic filler. The refractory coating material according to claim 1, wherein: 6. The fire-resistant covering material according to claim 1, wherein the shape maintaining material is formed of a thin metal plate material. 7. The fire-resistant coating material is attached to a steel frame such as a beam or a column with a gap provided therebetween.
7. The mounting structure for a fire-resistant covering material according to 6. 8. A refractory coating material is divided into a one-side coating material covering one cross-sectional outer peripheral surface of a steel frame such as a beam and a column, and a second-side coating material covering another cross-sectional outer peripheral surface. The mounting structure for a fire-resistant coating material according to claim 1, wherein the side coating material and the other-side coating material are attached to a steel frame with their edges joined to each other.