JP2022108673A - Refractory resin composition - Google Patents

Abstract

To provide a refractory resin composition in which the residue is hard even when a thermal expansion material is highly filled and that can close the partition penetrating part sufficiently.SOLUTION: Provided is a fire-resistant resin composition used for building fireproof structure that contains (A) a chloroprene rubber-containing resin component, (B) a heat-expandable layered inorganic substance, and (C) at least one selected from a flame retardant, an endothermic agent, and an inorganic filler.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to a fire-resistant resin composition, and more particularly to a fire-resistant resin composition having expandability capable of closing a compartment penetration.

2. Description of the Related Art In buildings such as collective housing, office buildings, and schools, partitions such as walls are often provided with section penetrations for passing long inserts such as cables and pipes. In order to prevent the spread of fire to other compartments when a fire breaks out in one of the compartments, the compartment penetration is required to have a structure with fire prevention measures (fireproof structure). The partition is generally a hollow wall that is composed of two walls and has a hollow space between the walls.

As a method of making the section penetration part a fireproof structure, for example, a method of filling the gap between the long insertion body and the through hole with an unshaped filler such as fireproof putty is known. When an amorphous filler is used, a tubular member made of a refractory material may also be disposed between the inside of the through hole of each wall and the insertion body (for example, Patent Document 1, 2).

Japanese Patent No. 6150933 Japanese Patent No. 6348320

However, when a monolithic filler is used for the fireproof treatment of the section penetrating part, there are variations depending on the operator, and sufficient fireproof performance may not be obtained. Also, when installing refractory materials and their accessories in the frame, it is not clear how much (amount, thickness, length, etc.) they are installed, or it is not possible to judge whether they are installed according to regulations. I have something to do. Therefore, in order to confirm whether or not refractory materials have been installed according to regulations, it is necessary to destroy the partition penetrating structure and confirm the internal structure.

In addition, in order to reduce the variation among workers, there was a kit that integrated parts of a predetermined amount and size, but there was a tendency for the number of parts to be large, and it was easy to lose parts or forget to install them. Also, there is a problem that there is a lot of garbage generated due to packing for each kit.

In addition, in the section penetrating structure in which long penetrating objects such as cables and pipes are inserted inside, if the penetrating body is moved after the partition penetrating structure is applied, the refractory material installed inside etc. may deviate from the appropriate position where it was installed. Also, due to an external force such as an earthquake, the refractory material may be displaced from the appropriate position where it was installed. In addition, if the refractory material expands unevenly rather than uniformly, the refractory material may deviate from the appropriate installed position or fall off. In this way, it becomes difficult to exhibit the desired fireproof performance as a fireproof structure of the section penetration part by shifting from the appropriate position where the fireproof material or the like was installed.

In order to solve the above problems, a method of installing a sheet made of a high-expansion material in the partition penetrating part without using an amorphous filler in the frame is conceivable. A sheet made of a high-expansion material can be obtained, for example, by filling a high amount of a thermal expansion material, and when a fire breaks out, it expands due to the flame and closes the section penetrating part, making it possible to suppress the spread of fire. .
However, when the thermal expansion material is highly filled, the residue of the sheet tends to become brittle and may be blown away by a flame or the like. Therefore, in some cases, the partition penetration portion cannot be sufficiently closed, and the spread of fire cannot be suppressed.
Therefore, in the present invention, by highly filling the thermal expansion material, when a fire breaks out, the partition penetration part is closed to suppress the spread of fire, and even if the thermal expansion material is highly filled, the residue is hard, An object of the present invention is to provide a fire-resistant resin composition capable of maintaining blockage of a section penetrating part.

The present invention was made to solve the above problems, and the gist of the present invention is as follows.
[1] (A) a resin component containing chloroprene rubber, (B) a thermally expandable layered inorganic material, and (C) a fire-resistant additive containing at least one selected from a flame retardant, an endothermic agent, and an inorganic filler. A fire-resistant resin composition used for the fireproof structure of buildings containing.
[2] The fire-resistant resin composition according to [1] above, wherein the content of the (B) thermally expandable layered inorganic material is 50 to 1000 parts by mass with respect to 100 parts by mass of the (A) resin component.
[3] The fire-resistant resin according to [1] or [2] above, wherein the content of the (B) thermally expandable layered inorganic material is 15 to 75 parts by mass with respect to 100 parts by mass of the fire-resistant resin composition. Composition.
[4] The fire-resistant resin composition according to any one of [1] to [3] above, wherein the (B) thermally expandable layered inorganic material has a thermal expansion initiation temperature of 100 to 300°C.
[5] The fire-resistant resin composition according to any one of [1] to [4] above, wherein (B) the thermally expandable layered inorganic material is thermally expandable graphite.
[6] The fire-resistant resin composition according to any one of [1] to [5] above, which further contains an elastomer as a resin component.
[7] A fire-resistant material comprising the fire-resistant resin composition according to any one of [1] to [6] above.
[8] The refractory material according to [7] above, which is in the form of a sheet.
[9] The refractory material according to [8] above, which has a thickness of 1.0 mm or more.
[10] A fire-resistant laminate comprising the fire-resistant material according to any one of [7] to [9] above and a base material integrated with the fire-resistant material.
[11] A partition penetration processing material including the refractory material according to any one of the above [7] to [9] or the refractory laminate according to the above [10].
[12] A compartment penetration treatment structure including the compartment penetration treatment material according to [11] above.
[13] The method for constructing the section penetrating treatment structure according to [12] above.

According to the present invention, when a fire breaks out, the partition penetration can be blocked to suppress the spread of fire, and even if the thermal expansion material is highly filled, the residue is hard and the partition penetration can be kept closed. It is possible to provide a fire resistant resin composition that can be used.

FIG. 4 is a perspective view showing the compartment penetration treatment structure before the compartment penetration treatment material is installed; It is a sectional view showing a section penetration processing structure. FIG. 4 is a schematic cross-sectional view showing the configuration of the sheet-like member of the compartment penetration treatment structure; FIG. 4 is a schematic cross-sectional view showing the configuration of the sheet-like member of the compartment penetration treatment structure;

The present invention will be described in detail below.
The fire-resistant resin composition of the present invention contains at least one selected from (A) a resin component containing chloroprene rubber, (B) a thermally expandable layered inorganic material, and (C) a flame retardant, an endothermic agent, and an inorganic filler. Contains fire resistant additives including

(A) Resin Component Containing Chloroprene Rubber The component (A) of the present invention is a resin component containing chloroprene rubber. As the chloroprene rubber (CR), thiuram-based sulfur-modified (G type), mercaptan-based non-sulfur-modified (W type), and the like can be used. The Mooney viscosity ML(1+4) at 100° C. of the chloroprene rubber is preferably 20-160, more preferably 30-150, still more preferably 40-140. When the Mooney viscosity at 100°C of the chloroprene rubber is equal to or higher than the lower limit, the cohesive force increases as much as the molecular weight increases, so even if the thermally expandable layered inorganic material is highly filled, the hardness of the residue is maintained. On the other hand, if it is equal to or less than the above upper limit, the load applied to the kneading device during kneading is reduced, so that moldability is improved. The Mooney viscosity ML(1+4) is measured at 100°C according to JIS K6300.
The content of the chloroprene rubber in the resin component (A) is preferably in the range of 30 to 100% by mass, more preferably in the range of 50 to 100% by mass, and even more preferably in the range of 80 to 100% by mass.

(A) The resin component may contain, for example, a thermoplastic resin, a thermosetting resin, and an elastomer, in addition to the chloroprene rubber, as long as the effects of the present invention are not impaired.
Examples of thermoplastic resins include polyvinyl chloride (PVC), chlorinated polyvinyl chloride resin (CPVC), fluororesin, polyphenylene ether, modified polyphenylene ether, polyphenylene sulfide, polycarbonate, polyetherimide, polyetheretherketone, poly Arylate, polyamide, polyamideimide, polybutadiene, polyimide, acrylic resin, polyacetal, polyamide, polyethylene (PE) and polypropylene (PP), polyolefins such as ethylene vinyl acetate (EVA), ethylene-propylene-diene copolymer (EPDM), Polyester such as chloroprene (CR), polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polystyrene (PS), polyphenylene sulfide, acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitrile-styrene-acrylonitrile copolymer (ASA), acrylonitrile /ethylene-propylene-diene/styrene copolymer (AES).
Examples of thermosetting resins include epoxy resins, phenolic resins, melamine resins, urea resins, unsaturated polyester resins, alkyd resins, polyurethanes, thermosetting polyimides, and the like.

Examples of elastomers include natural rubber, silicone rubber, styrene-butadiene rubber, isoprene rubber, butadiene rubber, acrylonitrile-butadiene rubber, nitrile-butadiene rubber, butyl rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, urethane rubber, and silicone rubber. , and rubber such as fluororubber. Thermoplastic elastomers such as olefin-based thermoplastic elastomers (TPO), styrene-based thermoplastic elastomers (TPS), ester-based thermoplastic elastomers, amide-based thermoplastic elastomers, and vinyl chloride-based thermoplastic elastomers are also included.

Among the above elastomers, it is preferable to blend a liquid elastomer such as polybutene in order to impart adhesiveness to the fire-resistant resin composition of the present invention. A liquid elastomer is an elastomer that becomes liquid at normal temperature and normal pressure. Moreover, in order to improve the compatibility between the liquid elastomer and the chloroprene rubber, it is preferable to further blend butyl rubber.
The content of the liquid elastomer in component (A) is preferably in the range of 5 to 50% by mass, more preferably in the range of 10 to 40% by mass, and more preferably in the range of 20 to 30% by mass. is particularly preferred. If it is at least the above lower limit value, sufficient adhesiveness can be imparted to the resin component, and if it is at most the above upper limit value, the content of other rubber components such as chloroprene rubber can be ensured, and the thermal expansion material can be made high. Even with filling, sufficient residue hardness is obtained.
In terms of ensuring compatibility between the chloroprene rubber and the liquid elastomer, the butyl rubber/liquid elastomer (mass ratio) is preferably in the range of 1:10 to 10:1, preferably 4:6. A range of ~6:4 is more preferred.
These thermoplastic resins, thermosetting resins and elastomers may be used alone or in combination of two or more.

(B) Thermally expandable layered inorganic material The thermally expandable layered inorganic material is a conventionally known substance that expands when heated. Examples thereof include vermiculite and thermally expandable graphite. Particles or scales may be used as the thermally expandable layered inorganic material. Since the thermally expandable layered inorganic material expands when heated to form large-capacity voids, the refractory material using the thermally expandable layered inorganic material of the present invention suppresses the spread of fire when ignited, and extinguishes the fire. be done.
Thermally expandable graphite is produced by mixing powders such as natural flake graphite, pyrolytic graphite, and Kish graphite with inorganic acids such as concentrated sulfuric acid, nitric acid, and selenic acid, concentrated nitric acid, perchloric acid, perchlorate, and permanganic acid. Graphite intercalation compounds are produced by treatment with strong oxidizing agents such as salt, bichromate and hydrogen peroxide. The thermally expandable graphite produced is a crystalline compound that maintains the layered structure of carbon.
As the thermally expandable graphite used in the present invention, thermally expandable graphite obtained by acid treatment is neutralized with ammonia, lower aliphatic amines, alkali metal compounds, alkaline earth metal compounds, etc. You can also
Examples of aliphatic lower amines include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, butylamine and the like.
Examples of alkali metal compounds and alkaline earth metal compounds include hydroxides, oxides, carbonates, sulfates, organic acid salts of potassium, sodium, calcium, barium, magnesium and the like.

The particle size of the thermally expandable graphite is preferably 20-200 mesh. When the particle size of the thermally expandable graphite is within the above range, it expands to easily form large-capacity voids, thereby improving the fire resistance. In addition, dispersibility in resin is also improved.
The average aspect ratio of thermally expandable graphite is preferably 2 or more, more preferably 5 or more, and even more preferably 10 or more. Although the upper limit of the average aspect ratio of the thermally expandable graphite is not particularly limited, it is preferably 1,000 or less from the viewpoint of preventing cracking of the thermally expandable graphite. When the average aspect ratio of the thermally expandable graphite is 2 or more, it expands to easily form large-capacity voids, thereby improving flame retardancy.
The average aspect ratio of thermally expandable graphite was obtained by measuring the maximum dimension (major axis) and minimum dimension (minor axis) of 10 thermally expandable graphite pieces, and dividing the maximum dimension (major axis) by the minimum dimension (minor axis). Let the average value of the values be the average aspect ratio. The major axis and minor axis of thermally expandable graphite can be measured using, for example, a field emission scanning electron microscope (FE-SEM).

The thermal expansion starting temperature of the thermally expandable layered inorganic material is not particularly limited, but for example, it is preferably 100 to 300°C, more preferably 120 to 280°C, and even more preferably 130 to 250°C. . By making it equal to or higher than these lower limits, it is possible to prevent the thermally expandable material from erroneously expanding due to heating other than fire. In addition, by setting it to be equal to or less than the upper limit, it becomes easier to reliably expand the thermally expandable material by the heat of the fire.
Moreover, the expansion start temperature of the thermally expandable layered inorganic material was measured by the following method.
<Expansion start temperature>
0.02 g of a piece of graphite is placed in a test tube, the test tube is placed vertically, supplied to an electric furnace, and heated at each temperature for 10 minutes. The thickness of the graphite piece after heating is measured, and the expansion ratio is calculated as (thickness of graphite piece after heating)/(thickness of graphite piece before heating), and the temperature at which the expansion ratio becomes 3 times or more is the expansion start temperature. and

The content of the thermally expandable layered inorganic material (B) is preferably 50 to 1000 parts by mass, more preferably 70 to 500 parts by mass, and 100 to 300 parts by mass with respect to 100 parts by mass of the resin component (A). is more preferred. When it is at least the above lower limit, sufficient thermal expansibility can be obtained, and it is possible to sufficiently block the partition penetration part. On the other hand, when the content is equal to or less than the above upper limit, the post-combustion residue is hard and is not blown off by flames or the like, and the blockage of the section penetration portion is maintained.
From the viewpoint of further increasing the expansion ratio of the fire-resistant material using the fire-resistant resin composition of the present invention, the content of the thermally expandable layered inorganic material is preferably 150 to 300 parts by mass. In the fire-resistant resin composition of the present invention, even if the content of the heat-expandable layered inorganic material is relatively increased to 150 parts by mass or more, the residue hardness can be maintained at a high value by using chloroprene rubber as the resin component. .

The content of the thermally expandable layered inorganic material (B) is preferably 15 to 75 parts by mass, more preferably 20 to 65 parts by mass, more preferably 23 to 60 parts by mass, with respect to 100 parts by mass of the fire-resistant resin composition. Parts by mass are more preferred. When it is at least the above lower limit value, sufficient thermal expansibility can be obtained, and it is possible to sufficiently block the partition penetrating portion. On the other hand, if it is equal to or less than the above upper limit, the moldability will be good, and the surface properties, mechanical properties, flexibility, etc. of the sealing member will also be good. Moreover, by selecting the content of the thermally expandable graphite within the above range, it becomes easier to adjust the expansion ratio within the desired range.
From the viewpoint of further increasing the expansion ratio of the fire-resistant material using the fire-resistant resin composition of the present invention, the content of the thermally expandable layered inorganic material is preferably 30 to 60 parts by mass. Moreover, even if the content of the heat-expandable layered inorganic material is relatively large, the use of chloroprene rubber as the resin component in the present invention enables the residue hardness to be maintained at a high value.

The fire-resistant resin composition of the present invention contains (C) as a fire-resistant additive, at least one selected from flame retardants, endothermic agents, and inorganic fillers. That is, each component may be used singly or in combination of two or more. By containing (C) the fire resistant additive, the fire resistant resin composition of the present invention can increase the residue hardness while improving the flame retardancy of the fire resistant resin composition.

<Flame retardant>
Flame retardants used in the present invention include phosphorus atom-containing compounds. Examples of phosphorus atom-containing compounds include red phosphorus, various phosphoric acid esters such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, and xylenyl diphenyl phosphate, sodium phosphate, phosphoric acid, Examples include potassium and metal phosphates such as magnesium phosphate, metal phosphites such as sodium phosphite, potassium phosphite, magnesium phosphite and aluminum phosphite, and ammonium polyphosphate. By using these phosphorus-containing compounds, appropriate fire resistance and fire extinguishing performance can be imparted to the fire resistant resin composition. A flame retardant may be used individually by these 1 type, and may use 2 or more types together.
Among these flame retardants, ammonium polyphosphate, aluminum phosphite and the like are particularly preferable from the viewpoint of improving the fire resistance and fire extinguishing performance of the fire resistant resin composition.

The flame retardant is preferably solid at normal temperature (23° C.) and normal pressure (1 atm). The average particle size of the flame retardant is preferably 1-200 μm, more preferably 1-60 μm, still more preferably 3-40 μm, and even more preferably 5-20 μm. When the average particle size of the flame retardant is within the above range, the dispersibility of the flame retardant in the fire resistant resin composition is improved, the flame retardant is uniformly dispersed in the resin, and the amount of the flame retardant to be added to the resin is increased. You can

<Heat absorbing agent>
As the endothermic agent used in the fire-resistant resin composition of the present invention, a hydrated metal compound is suitable. A hydrated metal compound is a compound that decomposes upon contact with a flame to generate water vapor and have the effect of absorbing heat. Hydrated metal compounds include metal hydroxides and hydrates of metal salts. Specifically, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, calcium-magnesium hydroxide, hydrotalcite, boehmite, talc, dawsonite, calcium sulfate hydrate, magnesium sulfate hydrate, boron zinc acid [2ZnO.3B ₂ O _{5.3.5H 2} O] and the like.
Among these, at least one selected from aluminum hydroxide, magnesium hydroxide, calcium sulfate dihydrate, and magnesium sulfate heptahydrate is preferable from the viewpoint of fire resistance and fire extinguishing performance, and particularly aluminum hydroxide. , magnesium hydroxide is preferred.

The endothermic agent preferably has a thermal decomposition initiation temperature of 500° C. or less and an endothermic amount of 500 J/g or more. If either the thermal decomposition initiation temperature or the amount of heat absorbed falls within the above range, the fire can be quickly extinguished upon ignition. From the above viewpoints, the thermal decomposition starting temperature of the endothermic agent is preferably 400° C. or lower, more preferably 300° C. or lower. Moreover, the thermal decomposition initiation temperature of the endothermic agent is usually 100° C. or higher, preferably 150° C. or higher, and more preferably 180° C. or higher. These lower limit values or more prevent the heat-absorbing agent from erroneously functioning due to heating other than fire.
The thermal decomposition initiation temperature can be measured by a thermogravimetric differential thermal analyzer (TG-DTA), and specifically by the method described in Examples.

The endothermic amount of the endothermic agent is preferably 600 J/g or more, more preferably 900 J/g or more. When the heat absorption amount of the heat-absorbing agent is within the above range, the heat absorption property is improved, so that the fire resistance and the fire-extinguishing performance are further improved. The endothermic amount of the endothermic agent is usually 4000 J/g or less, preferably 3000 J/g or less.
The endothermic amount can be measured using a thermogravimetric differential thermal analyzer (TG-DTA), specifically by the method described in Examples.

Moreover, the endothermic agent preferably has an average particle size of 0.1 to 90 μm. By setting the average particle size within the above range, the heat-absorbing agent can be easily dispersed in the resin, a large amount of the heat-absorbing agent can be easily blended, and fire resistance and fire extinguishing performance can be easily improved.
From the above viewpoints, the average particle size of the endothermic agent is more preferably 0.5 to 60 μm, still more preferably 0.8 to 40 μm, and even more preferably 0.8 to 10 μm.

<Inorganic filler>
The inorganic filler that can be used in the fire-resistant resin composition of the present invention is not particularly limited as long as it is an inorganic filler generally used in thermally expandable resin compositions. Specifically, for example, silica, diatomaceous earth, alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, ferrites, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, base magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, barium carbonate, dawsonite, hydrotalcite, calcium sulfate, barium sulfate, gypsum fiber, calcium silicate, talc, clay, mica, montmorillonite, bentonite, activated clay, seviolite, Imogolite, sericite, glass fiber, glass beads, silica balloon, aluminum nitride, aluminum phosphite, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balloon, charcoal powder, various metal powders, potassium titanate, sulfuric acid Examples include magnesium, lead zirconia titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powders, slag fiber, fly ash, and dewatered sludge.
Among these, calcium carbonate and carbon black are preferred. These inorganic fillers may be used alone or in combination of two or more.

The average particle size of the inorganic filler is preferably 0.5-100 μm, more preferably 1-50 μm. When the content of the inorganic filler is small, it is preferable that the particle size of the inorganic filler is small from the viewpoint of improving dispersibility. Particles having a large particle size are preferred because the
The average particle size of the flame retardant, endothermic agent, and inorganic filler described above is the value of the median size (D50) measured with a laser diffraction/scattering particle size distribution analyzer.

The content of component (C) in the fire-resistant resin composition of the present invention is preferably 30 to 500 parts by mass, more preferably 50 to 400 parts by mass, still more preferably 100 to 300 parts by mass, relative to 100 parts by mass of the resin. part by mass. When the content of component (C) is at least the above lower limit, flame retardancy can be obtained, and mechanical properties can be improved. On the other hand, when it is equal to or less than the upper limit, the relative amount of the thermally expandable layered inorganic material is sufficient, and when a fire occurs, it expands due to the flame, blocks the section penetration part, and can suppress the spread of fire.

(C) The fire-resistant additive may contain at least one selected from flame retardants, endothermic agents, and inorganic fillers, as described above, and the combination thereof is not particularly limited. and inorganic fillers are preferred, and combinations of flame retardants, endothermic agents, and inorganic fillers are preferred. A combination of ammonium polyphosphate (APP) as the flame retardant and calcium carbonate as the inorganic filler is particularly preferred. This is thought to be caused by the reaction of ammonium polyphosphate and calcium carbonate when heated by a fire or the like, which acts to harden the residue. From the viewpoint of hardening the residue, it is also preferable to use aluminum phosphite as (C) the fire resistant additive.

The fire resistant resin composition of the present invention may contain a plasticizer. A plasticizer is effective for the thermally expandable resin composition of the present invention using chloroprene rubber, and facilitates the production of the fire-resistant resin composition of the present invention.
Specific examples of plasticizers include, for example, di-2-ethylhexyl phthalate (DOP), dibutyl phthalate (DBP), diheptyl phthalate (DHP), diisodecyl phthalate (DIDP) and other phthalate ester plasticizers, di-2- Adipates such as ethylhexyl adipate (DOA), diisobutyl adipate (DIBA), dibutyl adipate (DBA), dibutoxyethyl adipate, di(butoxyethoxyethyl) adipate, di(methoxytetraethylene glycol) adipate, adipine Adipic acid ether ester plasticizers such as acid di(methoxypentaethylene glycol), adipic acid (methoxytetraethylene glycol) (methoxypentaethylene glycol), fatty acid ester plasticizers such as adipic acid polyester, epoxies such as epoxidized soybean oil tri-2-ethylhexyl trimellitate (TOTM), tri-2-ethylhexyl trimellitate (TOTM), tri-isononyl trimellitate (TINTM) and other trimellitate ester plasticizers, trimethyl phosphate (TMP), triethyl phosphate (TEP) and other phosphate ester plasticizers and process oils such as mineral oil.
A plasticizer can be used individually by 1 type or in combination of 2 or more types.
When the fire-resistant resin composition contains a plasticizer, the content of the plasticizer in the fire-resistant resin composition is, for example, 0.3 parts by mass or more and 150 parts by mass or less with respect to 100 parts by mass of the resin component. , preferably in the range of 10 to 100 parts by mass, more preferably in the range of 20 to 50 parts by mass. When the content of the plasticizer is at least these lower limits, moldability tends to be good, and when it is at most the upper limits, appropriate strength is imparted to the molded product.

The total content of the resin component and the plasticizer is preferably 10% by mass or more and 50% by mass or less, more preferably 15% by mass or more and 45% by mass or less, and 20% by mass or more and 40% by mass or less, based on the total amount of the resin composition. More preferred. When the content is at least these lower limits, the moldability of the thermally expansive member can be improved. In addition, flexibility is ensured to facilitate bending and deformation. Moreover, by making it below an upper limit, it becomes possible to mix|blend sufficient amounts of components, such as thermally expansible graphite and an inorganic filler.
In addition, the total content of the resin component and the plasticizer means the total content when both the resin component and the plasticizer are contained, and the resin component alone when the plasticizer is not contained. means content.

The fire-resistant resin composition of the present invention may contain a known tackifier. By containing a tackifier, the production of the fire-resistant resin composition of the present invention is facilitated, and tackiness is easily imparted to the thermally expandable member. The tackifier is not particularly limited, and petroleum resins, alkylphenol-formaldehyde resins, alkylphenol-acetylene resins, coumarone-indene resins, xylene-formaldehyde resins, polybutene, etc., can be used, and petroleum resins, etc. are preferably used. can.
The fire-resistant resin composition used in the present invention may optionally contain heat stabilizers, lubricants, processing aids, antioxidants, antistatic agents, pigments, cross-linking agents, Additives commonly used in thermally expandable resin compositions, such as cross-linking accelerators, may be added. Among these, the use of processing aids is preferred.

<Method for producing fire-resistant resin composition>
The fire-resistant resin composition of the present invention can be produced, for example, as follows. First, predetermined amounts of (A) a resin component, (B) a thermally expandable layered inorganic material, (C) a fire-resistant additive, and other optional additives are mixed with a mixer such as a kneading roll. to obtain a fire resistant resin composition. The fire-resistant resin composition may be diluted by adding a suitable solvent.

The fire-resistant resin composition of the present invention is used in the fire-resistant structure of buildings, particularly in partitions such as walls. It is preferably used for That is, it is preferable to use it as a refractory material for preventing fire from spreading to other compartments when a fire breaks out in one of the compartment penetrating parts.

[Refractory material]
The refractory material of the present invention is made of the refractory resin composition of the present invention, and is preferably in the form of a sheet. The thickness of the sheet-like refractory material is preferably 1.0 mm or more, more preferably 1.2 mm to 3.0 mm, even more preferably 1.5 mm to 2.0 mm. Sufficient fireproof performance is ensured that thickness is more than the said lower limit, and the flexibility of a fireproof sheet is ensured that it is below the said upper limit.

The expansion ratio of the refractory material of the present invention is preferably 10 times or more, more preferably in the range of 15 times to 70 times, even more preferably in the range of 20 times to 60 times, and 38 to 38 times. 60 times is even more preferable. Further, the residual hardness of the refractory material of the present invention is preferably 0.20 kgf/cm ² or more, more preferably in the range of 0.25 to 0.90 kgf/cm ² . Preferably, the range of 0.30 to 0.85 kgf/cm ² is more preferable.
The expansion ratio and residue hardness of the refractory material can be measured by the method described in Examples.

The sheet-like refractory material is obtained by applying the optionally diluted thermally expandable resin composition to a support such as a base material or a release sheet, drying and curing as appropriate, and forming a coating on one side of the support. A refractory material layer may be formed on the Also, a refractory material layer may be formed on one side of the support by a known method such as extrusion molding. The refractory material layer formed on the release sheet may be peeled off from the release sheet to form a sheet-like refractory material consisting of a single refractory material layer.
Then, it is preferable to obtain a sheet-like refractory material (refractory laminate) having a multi-layer structure by laminating the refractory material on another layer after peeling from the release sheet. Alternatively, the film may be laminated on another layer while being laminated on a release sheet or another support.

The sheet-shaped refractory material of the present invention may be used as a single layer of the sheet-shaped refractory material, but may be laminated with two or more layers of the sheet-shaped refractory material, or laminated with other layers other than the sheet-shaped refractory material. It may also be used in a body (refractory laminate). Other layers used include substrates, adhesive layers, and the like. The fire-resistant laminate may be one in which a substrate and a fire-resistant material layer comprising the fire-resistant resin composition of the present invention are integrated.

<Base material>
The base material used in the refractory laminate in which the base material and the sheet-like refractory material made of the fire-resistant resin composition of the present invention are integrated supports the refractory material layer and evenly transfers heat to the refractory material layer. . Examples of the base material include metal foils such as aluminum foil and copper foil, metal foil composites such as glass cloth and composites of metal foil and glass cloth such as aluminum glass cloth, paper, cloth, and resin films. . Among these, from the viewpoint of fire resistance, it is preferable to be composed of a noncombustible material, and specific examples include metal foils and metal foil composites. Incombustible materials are defined in the Building Standards Law and the Enforcement Order of the Building Standards Law.
The thickness of each substrate is not particularly limited, but is, for example, 0.01 to 1 mm, preferably 0.05 to 0.5 mm. Flexibility is imparted to the sheet-shaped member by the thickness of the noncombustible material layer being equal to or less than these upper limits. Moreover, it becomes easy to ensure fire resistance by having thickness more than a lower limit.

Moreover, the sheet-shaped refractory material of the present invention may be laminated with an adhesive layer as described above, or may be formed by laminating a plurality of sheet-shaped refractory materials. When laminating a plurality of sheet-like refractory materials, if they have adhesiveness, they may be laminated directly or may be laminated via an adhesive layer.
Further, when a plurality of sheet-like refractory materials are laminated, it is preferable that the layers have different expansion ratios, and it is preferable to control the expansion ratio according to the usage pattern. When two or more layers of sheet-like refractory material are provided, at least one layer thereof is preferably composed of the refractory resin composition of the present invention and constitutes a refractory material layer having a high coefficient of expansion.
In addition, in a fireproof laminate composed of a base material and a fireproof material layer, the base material may have two or more layers, and if the fireproof agent layer has adhesiveness, it may be attached to other members. It should be placed on the outermost surface so that it can be adhered.
A specific structure for laminating a plurality of sheet-shaped refractory materials will be described later with reference to FIGS.

The adhesive layer is preferably formed of an adhesive, and examples of the adhesive include acrylic adhesives, urethane adhesives, rubber adhesives, silicone resin adhesives, and the like. The pressure-sensitive adhesive layer may be nonflammable, semi-flammable, or flame-retardant, and the pressure-sensitive adhesive used may be blended with a flame retardant or the like. The thickness of the adhesive layer is, for example, 5-400 μm, preferably 10-150 μm.

[Sheet-shaped member]
As shown in FIG. 1, the refractory material (sheet-like member 3) of the present invention has slits 32 through which the inserting body 21 is inserted. Extend. The slit 32 is formed by cutting. The sheet-like member 3 allows the inserting body 21 to be inserted inside the sheet-like member 3 via the slit 32 extending to the outer edge. The slit 32 may have a hole through which the inserting body 21 is inserted and the slit 32 extending from the hole to the outer edge of the sheet-like member 3 .

As shown in FIG. 2, the sheet-like member 3 into which the inserting body 21 is inserted through the slit 32 is placed on the outer surface 11A from the outside of the partition part 11 so as to cover the gap 13E between the opening 13C and the inserting body 21. As a result, the gap 13E between the opening 13C and the insertion member 21 is closed by the sheet-like member 3. As shown in FIG. The sheet-like member 3 is preferably arranged so as to be in contact with both the outer surface 11A of the partition portion 11 and the outer periphery of the insertion member 21 . By placing the sheet member 3 in contact with the insertion member 21 and the partition 11, the opening 13C of the partition 11 can be closed, and the fire resistance can be improved and maintained.

The sheet-like member 3 may consist of a single layer of the refractory material of the present invention (that is, refractory material), but is preferably a laminated structure having a substrate and a refractory material layer. The laminated structure may consist of two layers, the substrate and the refractory material layer, or may be alternately laminated with at least three layers. Furthermore, the sheet-like member 3 is not limited to a three-layer structure, and four layers of substrates and refractory material layers may be alternately laminated.
Since the refractory material layer obtained from the refractory resin composition of the present invention has a high expansion ratio and the residue is hard, it may constitute a part of the plurality of refractory material layers, or constitute all the layers. may

In the case where the substrate and the refractory material layers having thermal expansibility are alternately laminated in at least three layers, when the sheet-like member 3 is heated, the refractory material layers are appropriately supported by the substrate and dissipate heat. The refractory material layer can be spread evenly, and the refractory material layer expands substantially uniformly, so that fire resistance can be improved. In addition, since the refractory material layer of the sheet-like member 3 expands substantially uniformly, the refractory material can stably exhibit its fire resistance because it maintains an appropriate installed position and does not shift. In addition, by using the sheet-like member 3, a fireproof structure is formed without arranging a filler such as fireproof putty or rock wool inside the partition penetration portion 15, so that variations may occur depending on the operator. do not have.
Furthermore, when a plurality of refractory material layers are laminated on the sheet-like member 3, the expanded refractory material layer on the partition part 11 side is embedded in the gap 13E, and when the sheet-like member 3 expands, the refractory material layer from the partition part 11 is buried. Separation is prevented, and the deviation described above is less likely to occur. On the other hand, the refractory material layer located away from the partition 11 expands evenly as described above, and the expansion residue can appropriately prevent the spread of fire.

When the sheet member 3 has a plurality of refractory layers, the expansion rate of the refractory layer farthest from the outer surface 11A of the partition 11 is higher than the expansion rate of the refractory layer closest to the outer surface 11A of the partition 11. is preferred. That is, in the sheet member 3 shown in FIGS. 3B and 3C, it is preferable that the expansion ratio of the refractory layer 31B is higher than that of the refractory layer 31A. Since the fire-resistant resin composition of the present invention has a high expansion ratio, it is suitable as a material for the fire-resistant material layer 31B.
Thus, when the expansion ratio of the refractory material layer on the partition part 11 side is low, the strength of the expansion residue is maintained high, and the sheet-like member 3 is appropriately supported by the refractory material layer embedded in the gap 13E, and the sheet-like member 3 is not displaced. becomes more difficult to occur. In addition, the refractory material layer located away from the partition part 11 is sufficiently expanded by heating, and it becomes easy to exhibit higher refractory performance.

In addition, when the number of refractory material layers is three or more, in order to expand the refractory material layer away from the outer surface 11A of the partition part 11 more preferably and substantially uniformly, the refractory material away from the outer surface 11A of the partition part 11 The higher the layer, the higher the expansion ratio.
Further, in the multilayer structure described above, the layers adjacent to each other may be adhered with a known adhesive. Therefore, in each laminated structure, an adhesive layer may be provided between the layers. .
In addition, in the multilayer structure, the sheet-like member 3 may have the same layer structure as a whole, but may have a partially different structure. For example, the layer structure of the substrate and the refractory material layer may be partially changed.

[Compartment penetrating material]
The refractory material (sheet-like member 3) of the present invention can be suitably used as a partition-penetrating treatment material. In the present specification, as shown in FIG. 1, members (sheet-like member 3, fixing members for fixing them, etc.) that are constructed in the section penetration portion 15 and form the section penetration treatment structure 10 are provided. They may be collectively referred to as partition penetrating processing materials.

[Compartment penetration processing structure]
As shown in FIG. 1, the compartment penetration processing structure of the present invention has a compartment penetration structure in which a compartment penetration section 15 formed in a partition section 11 of a building and into which an elongated insertion body 21 is inserted is a fireproof structure. processing structure.

The partition part 11 in the partition penetration processing structure of the present invention is a member that partitions the partitions (the first partition A and the second partition B) on the wall surface of the building. It has a section penetrating portion 15 penetrating to the other outer surface 11B side. The partitioning portion 11 shown in FIG. 1 is a hollow wall and is composed of two wall members (partitioning members) 12A and 12B arranged with an interval (hollow portion 13) interposed therebetween. Therefore, the partition through portion 15 is composed of a through hole 13A formed in one wall member 12A, a through hole 13B formed in the other wall member 12B, and a hollow portion 13 between them. The outer surface of one wall member 12A constitutes the outer surface 11A of the partition portion 11, and the outer surface of the other wall member 12B constitutes the outer surface 11B of the partition portion 11. As shown in FIG. The through holes 13A and 13B may have, for example, a circular shape, an elliptical shape, or a shape similar thereto. The through-holes 13A and 13B on the outer surfaces 11A and 11B constitute openings 13C and 13D of the partition through-hole 15 provided in the partition portion 11, respectively.

In the following, the configuration of the compartment penetration processing structure on one opening 13C side of the partition part 11 will be described, but in the present embodiment, the configuration of the compartment penetration processing structure on the other opening 13D side is the same, so the description thereof is omitted. do.

The compartment penetration processing structure 10 includes a sheet member 3 and a cover member 5 as compartment penetration processing materials, and as described above, the sheet member 3 is a refractory material in which the base material and the refractory material layer are integrated. .

As shown in FIG. 4A, the sheet-like member 3 can have a configuration in which an adhesive refractory material layer 31A is arranged on the outermost surface. 11A may be arranged. In this case, in order to impart adhesiveness, it is preferable that the component (A) of the fire-resistant resin composition constituting the fire-resistant material layer 31A contains a liquid elastomer such as polybutene, and further butyl rubber.
Further, as shown in FIG. 4B, when the fireproof material layer 31A having the adhesive layer 33 is arranged on the outermost surface, the adhesive layer is arranged in contact with the outer surface 11A of the partition section 11. may In this case, the content of chloroprene rubber as component (A) can be relatively increased, the content of thermally expandable layered inorganic material (B) can be increased, and the residue can be made harder. .
With the above configuration, the sheet-like member 3 can be fixed to the partition portion 11 without using a fixing member as a separate member from the sheet-like member 3 . Further, by imparting adhesiveness to the refractory material layer itself, it is not necessary to provide an adhesive layer, so that the configuration of the sheet-like member 3 can be simplified. When the outermost surface of the sheet member 3 is provided with an adhesive refractory material layer or an adhesive layer, a release sheet may be attached to the outermost surface. The release sheet is preferably peeled off from the outermost surface during use.
Moreover, the sheet-like member 3 is preferably fixed to the outer surface 11A of the partition portion 11 by a fixing member such as a tacker or a screw, which is a separate member from the sheet-like member 3 . Of course, the sheet-like member 3 may be fixed to the partition portion 11 by a combination of two or more of these.

The thickness of the sheet member 3 is not particularly limited, but is, for example, 0.1 to 20 mm, preferably 0.5 to 10 mm.

[Cover member]
The cover member 5 is provided so as to be connected to the sheet-like member 3 and is a member that covers the sheet-like member 3 provided in the partition section 11 . For example, as shown in FIG. 1, four cover members 5 are used so as to be connected to the four side edges of the sheet-like member 3, and four extension portions extending outward from the sheet-like member 3 are used. , covers the sheet-like member 3 provided in the partition portion 11, as shown in FIG. Examples of means for connecting the cover member 5 to at least a part of the sheet-like member 3 include known fixing means such as adhesives, adhesives, adhesive tapes, and fixing members such as tucker and screws. Means to be fixed can be mentioned. Here, the adhesive, pressure-sensitive adhesive, and pressure-sensitive adhesive tape are preferably noncombustible materials, semi-noncombustible materials, or flame-retardant materials, and the adhesives, pressure-sensitive adhesives, etc. may be blended with flame retardants or the like.
Since the cover member 5 is sheet-shaped and deformable, it can easily cover the sheet-shaped member 3 .

As shown in FIG. 2, the portion of the cover member 5 that covers the opening 13C of the compartment penetration portion 15 surrounds the insertion body 21 so as to be in contact with the insertion body 21 by a string-like member 22 that is wound from the outside. Fixed. The string-like member 22 may be any member as long as it can be bent, and is preferably a wire member including a wire. The wire member may be a metal wire alone, a resin-coated wire such as Nesurikko (registered trademark) coated with resin, or a wire and fiber entangled called a mall. If a wire member is used, the cover member 5 can be fixed to the insertion member 21 simply by twisting or twisting.

It is preferable that the cover member 5 covers a part of the sheet-like member 3 to make a part of the sheet-like member 3 invisible from the outside. Specifically, it is preferable to cover the portion of the sheet-like member 3 through which the inserting body 21 is inserted, thereby improving the design of the section penetrating portion 15, and the fire resistance performance of the section penetrating portion 15. can be improved.
On the other hand, the cover member 5 preferably covers a portion of the sheet-like member 3 so as to be visible from the outside. Specifically, as shown in FIG. 2, the cover member 5 may allow the end surface 3C of the sheet member 3 to be visible from the outside. To easily perform a visual inspection that the sheet-like member 3 is installed in the partition penetration part 15 by making the end surface 3C of the sheet-like member 3 visible from the outside in a state where the cover member 5 is installed. can be done.

The cover member 5 is preferably installed so as to be in contact with the sheet-like member 3 and the inserting body 21 . By installing the cover member 5 so as to be in contact with the sheet-like member 3 and the insertion member 21, the opening 13C of the partition part 11 can be closed by the sheet-like member 3 and the cover member 5, thereby improving the fire resistance performance. can be done.

The cover member 5 is installed so as to form a gap 40 with the sheet-like member 3 . Due to the space 40 between the sheet-like member 3 and the cover member 5 , the cover member 5 is fixed with a margin against axial movement of the insertion member 21 . By fixing the cover member 5 to the inserting body 21 with a margin, the inserting body 21 disposed inside the sheet-like member 3 and the cover member 5 can be pivoted after the sheet-like member 3 and the cover member 5 are installed. Even when the cover member 5 is moved in the direction, the sheet-like member 3 and the cover member 5 are cushioned from moving together with the insertion member 21 due to the margin of the cover member 5 . By buffering the sheet-like member 3 and the cover member 5 from moving together with the insertion member 21 , it is possible to suppress the sheet-like member 3 and the cover member 5 from being displaced from the section penetrating portion 15 . That is, by adopting such a configuration, the sheet-like member 3 and the cover member 5 can be maintained and arranged at appropriate positions in the partition penetration portion 15, and the fire resistance of the partition penetration portion 15 can be maintained. can be done.
There is a gap 40 between the sheet-like member 3 and the cover member 5, and various configurations are possible as a configuration in which the cover member 5 is fixed with a margin against the movement of the inserting body 21 in the axial direction. For example, at least a portion of the cover member 5 is made of a material having flexibility and stretchability so that it can bend or bend, and at least a portion of the cover member 5 is fixed to the insertion member 21 so as to have slack. configuration and the like.

The cover member 5 may consist of a single layer of fire-resistant material, may consist of a single layer of non-combustible material, or may have both a fire-resistant material layer and a non-combustible material layer. It preferably has a material layer, and more preferably consists of a noncombustible material layer. In addition, layers other than the refractory material layer and the noncombustible material layer may be included, and examples of such layers include a material layer composed of a material other than the noncombustible material, an adhesive layer, and the like.
As the cover member 5, metal foil such as aluminum foil, glass cloth, metal foil composite which is a composite of metal foil and glass cloth such as aluminum glass cloth, and the like are preferably used. These constitute the incombustible material layer. Among these, aluminum glass cloth is more preferable from the viewpoint of fire resistance.
Although the thickness of the noncombustible material layer is not particularly limited, it is, for example, 0.01 to 1 mm, preferably 0.05 to 0.5 mm. Flexibility is imparted to the cover member 5 by having the noncombustible material layer have a thickness equal to or less than these upper limits. Therefore, even if the cover member 5 has a layer of incombustible material, for example, the cover member 5 can be wrapped around the outer periphery of the insertion member 21 in close contact therewith. Moreover, it becomes easy to ensure fire resistance by having thickness more than a lower limit.

As described above, the cover member 5 is preferably a sheet that can be deformed so as to cover the sheet-like member 3. However, it is preferable that the cover member 5 is provided with flexibility and has a thickness smaller than that of the sheet-like member 3 so as to facilitate deformation. preferable. Although the thickness of the cover member 5 is not particularly limited, it is, for example, 0.01 to 1 mm, preferably 0.05 to 0.5 mm.

The refractory material layer used for the cover member 5 is preferably a thermally expandable member that expands when heated. The thermally expandable member prevents the fire from spreading by expanding upon fire. The thermally expandable member is preferably made of a thermally expandable resin composition as described later. Moreover, the refractory material layer may have adhesiveness.
Although the thickness of the refractory material layer is not particularly limited, it is, for example, 0.01 to 1 mm, preferably 0.05 to 0.5 mm. Flexibility is imparted to the cover member 5 by the refractory material layer having a thickness equal to or less than these upper limits. Therefore, even if the cover member 5 has a refractory material layer, it can be wound around the outer periphery of the insertion member 21 . Moreover, it becomes easy to ensure fire resistance by having thickness more than a lower limit.

The cover member 5 may have an adhesive refractory layer or may have an adhesive layer. The refractory material layer having adhesiveness and the adhesive layer may constitute the outermost surface of the cover member 5 .
With the above configuration, the cover member 5 can be fixed to the sheet-like member 3 or the insertion member 21 without using a fixing member as a separate member from the cover member 5 . In addition, by imparting adhesiveness to the refractory material layer itself, there is no need to provide an adhesive layer, so that the configuration of the cover member 5 can be simplified.
When the outermost surface of the cover member 5 is provided with an adhesive refractory material layer or an adhesive layer, a release sheet may be attached to the outermost surface. The release sheet is preferably peeled off from the outermost surface during use.

The method for constructing the partition penetrating structure 10 of the present invention comprises inserting the above-described sheet-like member 3 so as to close at least a part of the gap 13E between the opening 13C of the partition penetrating portion 15 provided in the partition portion 11 and the inserting body 21. including the step of installing Then, the sheet-like member 3 is covered with the cover member 5 installed on the sheet-like member 3 , and a part of the cover member 5 is fixed to the inserting body 21 . Therefore, its construction is easy.

The sheet-like member 3 and the cover member 5 used for construction may be separate bodies, and when they are separate bodies, the cover member 5 is attached to the sheet-like member 3 after the sheet-like member 3 is installed in the partition section 11. It can be installed by adhering and covering the sheet-like member 3 with the installed cover member 5. - 特許庁Moreover, the sheet-like member 3 and the cover member 5 used for construction may be an integrated body in which the sheet-like member 3 and the cover member 5 are adhered in advance.

According to the configuration of the present embodiment as described above, the gap 13E inside the opening 13C of the section penetrating portion 15 is closed by the sheet-like member 3 and the cover member 5, and at least the sheet-like member 3 of these is made of a refractory material. have. Therefore, appropriate fireproof performance can be imparted to the section penetration processing structure 10 .
Further, in the present embodiment, a fireproof structure is formed by the sheet-like member 3 and the cover member 5 without arranging a filler such as fireproof putty or rock wool inside the partition penetrating portion 15. does not occur.

Furthermore, in this embodiment, at least parts of the sheet-like member 3 and the cover member 5 are exposed and can be visually recognized from the outside. Further, when fixing members for fixing the sheet-like member 3 and the cover member 5 are provided, the fixing members should also be arranged at positions visible from the outside. Further, no member other than the inserting body 21 is provided inside the partition penetrating portion 15 . Therefore, it is possible to easily check whether the section penetrating treatment material has been constructed according to regulations by visual inspection or photographing. In addition, it is less likely that the installation will be forgotten.

The adhesive layer is preferably formed of an adhesive, and examples of the adhesive include acrylic adhesives, urethane adhesives, rubber adhesives, silicone resin adhesives, and the like. The pressure-sensitive adhesive layer may be nonflammable, quasi-nonflammable, or flame-retardant, and the pressure-sensitive adhesive used may be blended with a flame retardant or the like. The thickness of the adhesive layer is, for example, 5-400 μm, preferably 10-150 μm.
By forming the adhesive layer on one surface 5A of the cover member 5, the cover member 5 can be fixed to the insertion member 21 without using a separate fixing member from the cover member 5.
In addition, when the adhesive layer is provided on the one surface 5A of the cover member 5, a release sheet may be attached to the one surface 5A. The release sheet is preferably peeled off from one surface 5A when used.

The cover member 5 is made of an elastic foam that is flexible enough to follow the outer periphery of the insertion member 21 . Specific examples of elastic foams include olefin resin foams and urethane resin foams.
Although the thickness of the elastic foam is not particularly limited, it is, for example, 0.1 to 10 mm, preferably 0.15 to 5 mm. Flexibility is imparted to the cover member 5 by the elastic foam having a thickness equal to or less than these upper limits. Therefore, the cover member 5 can be wrapped around the outer periphery of the insertion member 21 while being in close contact therewith. In addition, having a thickness equal to or greater than the lower limit value facilitates disposition of the cover member 5 .

According to the configuration of the present embodiment as described above, the gap 13E inside the opening 13C of the partition penetrating portion 15 is closed by the sheet-like member 3 and the cover member 5, and at least the sheet-like member 3 is made of a fireproof material. have Therefore, appropriate fireproof performance can be imparted to the section penetration processing structure 10 .
In addition, as described above, the section penetrating processing structure 10 prepares the sheet-like member 3 and the cover member 5. It is installed so as to close the gap 13E. Next, the cover member 5 is wrapped around the insertion member 21 for one or more turns, and the sheet-like member 3 is fixed so as to cover at least a portion thereof with the cover member 5 . Therefore, its construction is easy.
Further, in the present embodiment, a fireproof structure is formed by the sheet-like member 3 and the cover member 5 without arranging a filler such as fireproof putty or rock wool inside the partition penetrating portion 15. does not occur.

In the above description, the partition portion 11 is a hollow wall having the hollow portion 13 inside, but is not limited to a hollow wall and may be a wall having no hollow. It may be made of material. Moreover, the partition part 11 is not limited to the wall of the building, and may be the ceiling or the floor of the building. In the case of a ceiling or a floor, the partition part may have a structure having a hollow space between two partition members, or may have a structure without a hollow space, and may be composed of, for example, one partition member. good.

The cover member 5 is not limited to the above aspect. For example, in the partition penetrating processing structure 10 shown in FIG. A single sheet-like member that is one size larger may be used.
2, the cover member 5 is adhered only to a part of the surface 3A of the sheet-like member 3. When the sheet-like cover member 5 is used, the cover member 5 can be adhered to the entire surface 3A of the sheet-like member 3 . That is, it may have a structure in which the sheet member 3 is laminated on one surface of the cover member 5 . In such a structure, it is preferable that the cover member 5 has a noncombustible material layer. By forming the sheet-like member 3 and the cover member 5 into a combination of a noncombustible material layer and a fireproof material layer, the fire resistance can be improved. Moreover, an adhesive layer may be provided on the surface of the cover member 5 to which the sheet-like member 3 is adhered.
Moreover, the sheet-like member 3 may have a structure in which the base material, which is one layer of the sheet-like member 3, extends outward from the other layers. With such a structure, the extended portion of the base material can be used as the cover member 5 as it is.
In addition, although the partition penetrating processing structure 10 shown in FIGS. 1 and 2 is provided with the sheet-like member 3 and the cover member 5, the cover member 5 may be omitted.

EXAMPLES The present invention will be described in more detail with reference to Examples below, but the present invention is not limited to these.
Components used in Examples and Comparative Examples are shown below.

(A) Resin component (A-1) Chloroprene rubber (CR)
・Skypren (registered trademark) B-30 (manufactured by Tosoh Corporation, mercaptan modified type, Mooney viscosity (100 ° C.) 45 to 53)
・Skypren (registered trademark) TSR-54 (manufactured by Tosoh Corporation, mercaptan modified type, Mooney viscosity (100 ° C.) 60 to 80)
・Skypren (registered trademark) Y-30S (manufactured by Tosoh Corporation, mercaptan modified type, Mooney viscosity (100 ° C.) 111 to 135)
(A-2) Polybutene: manufactured by JTXTG Energy, trade name “Nisseki Polybdenum HV-100”
(A-3) Butyl rubber: manufactured by JSR, trade name “JSR Butyl Rubber 065”

(B) Thermally expandable layered inorganic material (B-1) EXP-50S 150 (manufactured by Fuji Graphite Industry Co., Ltd., expansion start temperature: 150 ° C.)
(B-2) ADT-351 (manufactured by ADT, expansion start temperature: 180° C.)
(B-3) CA-60N (manufactured by Air Water, expansion start temperature: 220°C)

(C) Component (C-1) flame retardant APP: ammonium polyphosphate (manufactured by Taihei Chemical Industry Co., Ltd.)
・ APA100: Aluminum phosphite (manufactured by Taihei Chemical Industry Co., Ltd.)
(C-2) Endothermic agent BF013: aluminum hydroxide (manufactured by Nippon Light Metal Co., Ltd., average particle size 1 μm, thermal decomposition start temperature 200° C., endothermic amount 1000 J/g)
Kisuma 10: Magnesium hydroxide (manufactured by Kyowa Chemical Industry Co., Ltd., average particle size 0.9 μm, thermal decomposition start temperature 280 ° C., endothermic amount 1350 J / g)
(C-3) Inorganic filler/calcium carbonate: manufactured by Shiraishi Calcium Co., Ltd., trade name “BF300”
・ Carbon black: manufactured by Mitsubishi Chemical Corporation, trade name “Dia Black H”

(D) Other components (D-1) plasticizer RS-107: adipate ether ester (manufactured by ADEKA)
・ DIDP: diisodecyl phthalate (manufactured by Tokyo Chemical Industry Co., Ltd., reagent special grade)
(D-2) Tackifier: Imarb (petroleum resin, manufactured by Idemitsu Kosan Co., Ltd.)

The measurement method and evaluation method for each physical property are as follows.
(1) Expansion ratio A test piece (length 100 mm, width 100 mm, thickness is the thickness of the refractory material of each example and comparative example) made from the refractory material of each example and comparative example is supplied to an electric furnace and heated to 600 ° C. After heating for 30 minutes, the thickness of the test piece was measured, and (thickness of test piece after heating)/(thickness of test piece before heating) was calculated as expansion ratio.
(2) Residue hardness After heating at 300 ° C. for 30 minutes in the expansion ratio test, the heated test piece whose expansion ratio was measured was supplied to a compression tester (manufactured by Kato Tech Co., Ltd., "Finger Filling Tester"), It was compressed with an indenter of 0.25 cm ² at a speed of 0.1 cm/sec, and the stress at break was measured.
(3) Shape Retention of Residue The hardness of the residue is an index of the hardness of the residue after expansion, but since the measurement is limited to the surface portion of the residue, it may not be an index of the hardness of the entire residue. , shape retention was measured as an index of the hardness of the entire residue. The shape retainability of the residue was measured by holding both ends of the test piece for which the expansion ratio was measured and lifting it by hand to see how easily the residue collapsed. A case where the test piece was lifted without collapsing was evaluated as pass (PASS), and a case where the test piece collapsed and could not be lifted was evaluated as fail (FAIL).
(4) Fire resistance test An opening with a diameter of 100 mm was opened in the frame of the gypsum board, and an electric cable with a length of 1200 mm was wired in the center of the opening so that the space factor (=cable cross-sectional area/opening area) was 10%. 300 mm out. The refractory material obtained by the molding was installed so as to close the opening. Heated for 1 hour in a vertical furnace following the ISO834 heating curve. A case where there was no penetration and no flame was evaluated as pass (PASS), and a case where penetration and flame was generated was evaluated as fail (FAIL).

Examples 1-23, Comparative Examples 1-3
In the formulation shown in Table 1 below, a resin, a thermally expandable layered inorganic material, a flame retardant, an endothermic agent, an inorganic filler, a plasticizer, and a petroleum resin are put into a roll and kneaded at 130 ° C. for 5 minutes to obtain a fire resistant resin. A composition was obtained. The obtained fire-resistant resin composition was press-molded at 130° C. for 3 minutes to obtain a thermally expandable sheet with a thickness of 1.5 mm (thickness of 1.3 mm in Example 23).
Table 1 shows the evaluation results.

As shown in each of the above examples, the fire-resistant sheet using the fire-resistant resin composition of the present invention had a sufficient expansion ratio and good shape retention of the residue. Even in the fire resistance test, there was no penetrating flame. On the other hand, the fire-resistant sheet of Comparative Example 1 containing no (C) fire-resistant additive has a high foaming ratio, but the residue hardness is not sufficient, and in the shape retention test of the residue, the test piece collapses and is lifted. was in a state of being unable to Moreover, in the fire resistance test, penetration and flame outflow occurred. In addition, (B) the fire-resistant sheet of Comparative Example 2, which does not have the thermally expandable layered inorganic material, penetrated through the fire-resistant sheet as a result of the fire resistance test, and flames were generated. Furthermore, the fire-resistant sheet of Comparative Example 3, which did not contain chloroprene rubber as the component (A), did not have sufficient hardness of the residue, and in the shape retention test of the residue, the test piece collapsed and could not be lifted. Moreover, in the fire resistance test, penetration and flame outflow occurred.

3 sheet-shaped member 5 cover member 10 compartment penetration processing structure 11 partition part 12A, 12B wall material 13 hollow part 13A, 13B through hole 13C, 13D opening 13E gap 15 compartment penetration part 21 insertion body 22 string member 30A,... 30Y, 30Z base material 31A, ... 31Y, 31Z fireproof material layer 32 slit 33 adhesive layer 40 void

Claims (13)

Construction containing (A) a resin component containing chloroprene rubber, (B) a thermally expandable layered inorganic material, and (C) a fire-resistant additive containing at least one selected from flame retardants, heat-absorbing agents, and inorganic fillers A fire-resistant resin composition used for the fire-resistant structure of objects. 2. The fire-resistant resin composition according to claim 1, wherein the content of the (B) thermally expandable layered inorganic material is 50 to 1000 parts by mass with respect to 100 parts by mass of the resin component (A). 3. The fire resistant resin composition according to claim 1, wherein the content of the (B) thermally expandable layered inorganic material is 15 to 75 parts by mass with respect to 100 parts by mass of the fire resistant resin composition. 4. The fire-resistant resin composition according to any one of claims 1 to 3, wherein the (B) thermally expandable layered inorganic material has a thermal expansion initiation temperature of 100 to 300°C. The fire-resistant resin composition according to any one of claims 1 to 4, wherein the (B) thermally expandable layered inorganic material is thermally expandable graphite. The fire-resistant resin composition according to any one of claims 1 to 5, further comprising an elastomer as a resin component. A fire-resistant material comprising the fire-resistant resin composition according to any one of claims 1 to 6. 8. The refractory material according to claim 7, which is in the form of a sheet. 9. The refractory material according to claim 8, having a thickness of 1.0 mm or more. A refractory laminate comprising the refractory material according to any one of claims 7 to 9 and a base material integrated with the refractory material. A section penetration treatment material comprising the fireproof material according to any one of claims 7 to 9 or the fireproof laminate according to claim 10. A compartment penetration treatment structure comprising the compartment penetration treatment material according to claim 11 . 13. The method for constructing a partition penetration processing structure according to claim 12.

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