JP6209432B2 - Fire spread prevention method and fire spread prevention device - Google Patents
Fire spread prevention method and fire spread prevention device Download PDFInfo
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- JP6209432B2 JP6209432B2 JP2013247951A JP2013247951A JP6209432B2 JP 6209432 B2 JP6209432 B2 JP 6209432B2 JP 2013247951 A JP2013247951 A JP 2013247951A JP 2013247951 A JP2013247951 A JP 2013247951A JP 6209432 B2 JP6209432 B2 JP 6209432B2
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- 238000000034 method Methods 0.000 title claims description 24
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Landscapes
- Fireproofing Substances (AREA)
- Building Environments (AREA)
Description
本発明は、火災延焼防止方法及び火災延焼防止装置に関する。 The present invention relates to a fire spread prevention method and a fire spread prevention device.
従来、高硬度且つ粗粒の耐火粉末原料（難燃材）を配合した発泡ポリウレタンの溶液濃度を、特定条件を満たす有機溶剤によって希釈することにより、この耐火断熱被覆材の吹き付け塗装を可能とする耐火断熱被覆材の吹き付け方法が提案されている（例えば、特許文献１参照）。この方法では、沸点が１３０℃以下の有機溶剤、例えば、沸点７０℃程度のエステル系及びケトン系の溶剤を用いることにより、２液性ポリウレタン発泡樹脂を主成分とした耐火断熱被覆材を簡便に吹き付け施工することができるとしている。 Conventionally, by spraying the solution concentration of polyurethane foam blended with high-hardness and coarse refractory powder raw material (flame retardant) with an organic solvent that satisfies specific conditions, spray coating of this fire-resistant and heat-insulating coating material becomes possible. A method for spraying a refractory heat insulating coating material has been proposed (see, for example, Patent Document 1). In this method, by using an organic solvent having a boiling point of 130 ° C. or less, for example, an ester solvent and a ketone solvent having a boiling point of about 70 ° C., a fireproof and heat insulating coating material mainly composed of a two-component polyurethane foamed resin can be easily obtained. It can be sprayed.
しかしながら、上述の特許文献１の耐火断熱被覆材では、有機溶剤によりその粘性を低減するよう工夫しているが、それでも十分でなく、難燃剤を添加した発泡剤を用いると、吹きつけの際にノズルが詰まりやすいこともあり、更なる改良が望まれていた。また、特許文献１の被覆材では、沸点がより低い有機溶剤を用いることから、比較的高温な場所、例えば、火事現場などでは吹き付け処理に用いることが困難な場合があった。 However, in the above-mentioned fire-resistant and heat-insulating coating material of Patent Document 1, it has been devised to reduce its viscosity with an organic solvent, but it is still not sufficient, and when using a foaming agent to which a flame retardant is added, Since the nozzle is likely to be clogged, further improvement has been desired. Further, since the coating material of Patent Document 1 uses an organic solvent having a lower boiling point, it may be difficult to use it for spraying treatment at a relatively high temperature place, for example, a fire site.
本発明は、このような課題に鑑みなされたものであり、難燃性発泡剤をより容易に吹き付け処理することができる火災延焼防止方法を提供することを主目的とする。 This invention is made | formed in view of such a subject, and it aims at providing the fire-spreading prevention method which can spray-process a flame-retardant foaming agent more easily.
上述した目的を達成するために鋭意研究したところ、本発明者らは、発泡剤に難燃剤を混合すると吹き付けやすさは激減するが、これらを別々に吹き付けるものとすると、より容易に吹き付け処理を実施することができることを見いだし、本発明を完成するに至った。 As a result of diligent research to achieve the above-mentioned object, the present inventors drastically reduce the ease of spraying when a flame retardant is mixed with a foaming agent, but if these are sprayed separately, the spraying process is more easily performed. It has been found that it can be carried out, and the present invention has been completed.
即ち、本発明の火災延焼防止方法は、
延焼防止対象物の延焼を防止する火災延焼防止方法であって、
発泡固化する発泡剤を吐出し、吐出した前記発泡剤に難燃材を吐出することにより難燃性発泡剤を前記延焼防止対象物に形成する形成工程、を含むものである。
That is, the fire spread method of the present invention is:
A fire spread prevention method for preventing the spread of a fire spread object,
And a forming step of forming a flame retardant foaming agent on the fire spread prevention object by discharging a foaming agent to be solidified and discharging a flame retardant to the discharged foaming agent.
本発明の火災延焼防止装置は、
延焼防止対象物の延焼を防止する火災延焼防止装置であって、
発泡固化する発泡剤を吐出する第１ノズルと、
難燃剤を吐出する第２ノズルとを備え、
前記第１ノズルは発泡剤を吐出し、前記第２ノズルは前記吐出した前記発泡剤に難燃材を吐出することにより難燃性発泡剤を前記延焼防止対象物に形成するものである。
The fire spread prevention device of the present invention is
A fire spread prevention device for preventing the spread of a fire spread object,
A first nozzle that discharges a foaming agent to be solidified;
A second nozzle for discharging a flame retardant,
The first nozzle discharges a foaming agent, and the second nozzle discharges a flame retardant to the discharged foaming agent, thereby forming a flame retardant foaming agent on the fire spread prevention object.
本発明は、難燃性発泡剤をより容易に吹き付け処理することができる。例えば、難燃性又は不燃性の材料を発泡材の原料に加えると、粘度が上昇するだけでなく、原料中に比較的大きな無機粉末を含むことになる。そして、吹きつけの際にこの無機粉末と固化した発泡剤とが集まりやすく、ノズルを閉塞しやすくなり、吹き付けが困難になることがある。本発明では、発泡剤と難燃剤とを別々に吐出するため、このようなノズルの閉塞をより抑制することができる。したがって、難燃性発泡剤をより容易に吹き付け処理することができる。 In the present invention, the flame-retardant foaming agent can be sprayed more easily. For example, when a flame-retardant or non-flammable material is added to the raw material of the foam material, not only the viscosity is increased, but a relatively large inorganic powder is included in the raw material. And when spraying, this inorganic powder and the solidified foaming agent are easy to gather, it becomes easy to block | close a nozzle, and spraying may become difficult. In this invention, since a foaming agent and a flame retardant are discharged separately, such blockage | closure of a nozzle can be suppressed more. Therefore, the flame retardant foaming agent can be sprayed more easily.
本発明の好適な実施形態を図面を参照しながら以下に説明する。図１は、本発明の火災延焼防止方法の概要の説明図である。図２は、発泡固化中の発泡剤に対して難燃材を吐出する説明図である。図３は、吐出中の発泡剤に対して難燃材を吐出する説明図である。本発明の火災延焼防止方法は、図１に示すように、延焼防止装置２０が、発泡固化する発泡剤を吐出し、吐出した発泡剤に難燃材を吐出することにより、難燃性発泡剤３０を延焼防止対象物１０に形成する形成工程、を含む。例えば、近隣に火災の建造物がある場合、延焼を防止するために他の建物に放水することがある。しかしながら、窓ガラスが割れたり、放水の効果が得られないこともあり得る。ここでは、延焼防止対象物１０に対して、延焼防止装置２０を用いて難燃性発泡剤３０の層を延焼防止対象物の外壁に形成することにより、延焼を防止するのである。なお、「難燃材」は、燃えにくいものをいい、準不燃材や不燃材を含むものとする。 Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view of the outline of the fire spread prevention method of the present invention. FIG. 2 is an explanatory diagram for discharging the flame retardant to the foaming agent during foaming and solidification. FIG. 3 is an explanatory diagram for discharging the flame retardant to the foaming agent being discharged. As shown in FIG. 1, the fire spread prevention method of the present invention is such that the fire spread prevention device 20 discharges a foaming agent that foams and solidifies, and discharges a flame retardant to the discharged foaming agent. A forming step of forming 30 on the fire spread prevention object 10. For example, if there is a fire building nearby, water may be discharged to other buildings to prevent the spread of fire. However, the window glass may be broken or the water discharge effect may not be obtained. Here, the fire spread is prevented by forming a layer of the flame retardant foaming agent 30 on the outer wall of the fire spread prevention object 20 with respect to the fire spread prevention object 10 using the fire spread prevention device 20. The “flame retardant” means a material that is difficult to burn, and includes quasi-incombustible materials and non-combustible materials.
本発明の延焼防止装置２０は、発泡剤を収容し発泡剤に圧力を加える第１吐出装置２２と、第１吐出装置２２により加圧された発泡剤を吐出する第１ノズル２３と、難燃剤を収容し難燃剤に圧力を加える第２吐出装置２４と、第２吐出装置２４により加圧された難燃剤を吐出する第２ノズル２５とを備えているものとしてもよい。このとき、延焼防止装置２０は、第１ノズル２３は発泡剤を吐出し、第２ノズル２５は吐出した発泡剤に難燃材を吐出することにより難燃性発泡剤３０を延焼防止対象物１０に形成する。この延焼防止装置２０は、消防自動車に搭載するものとしてもよい。 The fire spread prevention device 20 of the present invention includes a first discharge device 22 that contains a foaming agent and applies pressure to the foaming agent, a first nozzle 23 that discharges the foaming agent pressurized by the first discharge device 22, and a flame retardant. And a second nozzle 24 that discharges the flame retardant pressurized by the second discharge device 24 may be provided. At this time, in the fire spread prevention device 20, the first nozzle 23 discharges the foaming agent, and the second nozzle 25 discharges the flame retardant to the discharged foaming agent, whereby the flame retardant foaming agent 30 is spread over the fire prevention object 10. To form. This fire spread prevention device 20 may be mounted on a fire engine.
本発明の火災延焼防止方法において、形成工程では、図２に示すように、延焼防止対象物１０に形成され発泡固化中の発泡剤に対して難燃材を吐出するものとしてもよい。こうすれば、発泡剤の表面に難燃材の層ができるから、延焼防止対象物１０の延焼を防止することができる。また、発泡剤と難燃材とを別々のノズルから吐出するため、ノズル詰まりの発生をより抑制することができ、難燃性発泡剤をより容易に吹き付け処理することができる。 In the fire spread prevention method of the present invention, in the forming step, as shown in FIG. 2, the flame retardant material may be discharged to the foaming agent formed on the fire spread prevention object 10 and being foamed and solidified. If it carries out like this, since the layer of a flame retardant is made on the surface of a foaming agent, the fire spread of the fire spread prevention target object 10 can be prevented. Moreover, since the foaming agent and the flame retardant are discharged from separate nozzles, the occurrence of nozzle clogging can be further suppressed, and the flame retardant foaming agent can be sprayed more easily.
本発明の火災延焼防止方法において、形成工程では、図３に示すように、延焼防止対象物１０に形成される前の吐出中の発泡剤に対して難燃材を吐出するものとしてもよい。こうすれば、発泡剤と難燃材とがある程度混合した層ができるから、延焼防止対象物１０の延焼を防止することができる。また、発泡剤と難燃材とを別々のノズルから吐出するため、ノズル詰まりの発生をより抑制することができ、難燃性発泡剤をより容易に吹き付け処理することができる。 In the fire spread prevention method of the present invention, in the forming step, as shown in FIG. 3, the flame retardant material may be discharged to the blowing agent being discharged before being formed on the fire spread prevention object 10. In this way, since a layer in which the foaming agent and the flame retardant are mixed to some extent is formed, it is possible to prevent the fire spread of the fire spread prevention object 10. Moreover, since the foaming agent and the flame retardant are discharged from separate nozzles, the occurrence of nozzle clogging can be further suppressed, and the flame retardant foaming agent can be sprayed more easily.
本発明の火災延焼防止方法において、発泡剤は、発泡固化するものであれば特に限定されないが、例えば、発泡ウレタンであることが好ましい。発泡ウレタンは、吹き付け及び発泡固化が比較的早く、取り扱いが容易であり好ましい。この発泡ウレタンは、例えば、第１液と第２液とを混合する２液系発泡ウレタンとしてもよい。このとき、第１液はポリオールを含む液としてもよいし、第２液はポリイソシアネートを含む液としてもよい。第１液に含まれるポリオールは、例えば、有機ジカルボン酸と多価アルコールから誘導されるポリエステルポリオール、ラクトンから誘導されるポリエステルポリオール、ヒマシ油、ヒマシ油変性ポリオール、ポリエーテルポリオール、エポキシ変性ポリオール、シリコン系ポリオールなどが挙げられる。これらのポリオールは、１種又は２種以上を併用してもよい。有機ジカルボン酸としては、例えば、フタル酸、アジピン酸、二量化リノレイン酸、マレイン酸などが挙げられる。多価アルコールとしては、例えば、エチレングリコール、プロピレングリコール、ヘキサントリオール、グリセリン、ペンタエリスリトールなどが挙げられる。ポリエステルポリオールとしては、例えば、ポリブチロラクトン、ポリバレロラクトンなどが挙げられる。ポリエーテルポリオールとしては、例えば、ポリ（オキシプロピレン）グリコールなどが挙げられる。第１液は、架橋剤を含有するものとしてもよい。この架橋剤は、例えば、エチレングリコール及びプロピレングリコールなどの脂肪族ジオール類、エチレンジアミン及びプロピレンジアミンなどの脂肪族ジアミン類、アニリン及びフェニレンジアミンなどの芳香族アミン類などが挙げられる。第２液中に含まれるポリイソシアネートは、例えば、ヘキサメチレンジイソシアネート、オクタメチレンジイソシアネート、トリレンジイソシアネートなどが挙げられる。第１液と第２液との配合割合は、特に限定されないが、例えば、第１液中のポリオールおよび架橋剤の活性水素の全モル数と、第２液中のポリイソシアネートのイソシアネート基のモル数とがほぼ等しくなる割合とすることが好ましい。 In the fire spread prevention method of the present invention, the foaming agent is not particularly limited as long as it foams and solidifies. For example, urethane foam is preferable. Foamed urethane is preferred because it is relatively quick to spray and solidify and is easy to handle. This urethane foam may be, for example, a two-component urethane foam that mixes the first liquid and the second liquid. At this time, the first liquid may be a liquid containing a polyol, and the second liquid may be a liquid containing a polyisocyanate. Polyols contained in the first liquid are, for example, polyester polyols derived from organic dicarboxylic acids and polyhydric alcohols, polyester polyols derived from lactones, castor oil, castor oil-modified polyols, polyether polyols, epoxy-modified polyols, silicon Based polyols and the like. These polyols may be used alone or in combination of two or more. Examples of the organic dicarboxylic acid include phthalic acid, adipic acid, dimerized linolenic acid, maleic acid and the like. Examples of the polyhydric alcohol include ethylene glycol, propylene glycol, hexanetriol, glycerin, pentaerythritol and the like. Examples of the polyester polyol include polybutyrolactone and polyvalerolactone. Examples of the polyether polyol include poly (oxypropylene) glycol. The first liquid may contain a crosslinking agent. Examples of the crosslinking agent include aliphatic diols such as ethylene glycol and propylene glycol, aliphatic diamines such as ethylene diamine and propylene diamine, and aromatic amines such as aniline and phenylene diamine. Examples of the polyisocyanate contained in the second liquid include hexamethylene diisocyanate, octamethylene diisocyanate, and tolylene diisocyanate. The mixing ratio of the first liquid and the second liquid is not particularly limited. For example, the total number of active hydrogens of the polyol and the crosslinking agent in the first liquid and the moles of isocyanate groups of the polyisocyanate in the second liquid are as follows. It is preferable to set the ratio so that the number is almost equal.
本発明の火災延焼防止方法において、難燃材は、発泡剤を難燃化あるいは不燃化するものであれば特に限定されないが、 炭素材、ポリリン酸アンモニウム、硫酸アンモニウム、水酸化アルミニウムのうち１以上を含むことが好ましい。この難燃材は、発泡剤の１００質量部に対して、１０〜１５０質量部となるように吐出することが好ましい。炭素材としては、例えば、熱膨張性黒鉛を用いることが好ましい。膨張性黒鉛は、例えば、加熱すると黒鉛層間に存在する化合物が熱分解して全体が膨張する性質を持つ黒鉛である。この膨張性黒鉛は、例えば、黒鉛酸性硫酸塩、ナトリウム黒鉛、カリウム黒鉛、ハロゲン化黒鉛、黒鉛酸化物、塩化アルミニウム黒鉛化物、塩化第二鉄黒鉛などが黒鉛の層間に存在し熱分解することにより、熱膨張するものとしてもよい。ポリリン酸アンモニウムは、樹脂で被覆してマイクロカプセル化するものとしてもよい。また、難燃材としては、更に、メラミン化合物粉末やペンタエリスリトール粉末を含むものとしてもよい。また、難燃材としては、上述のもののほか、必要に応じて、補助成分を１種または２種以上含有させてもよい。補助成分としては、例えば、シリカ、タルク、硫酸バリウム、水酸化アルミニウム、水酸化マグネシウム、カオリン、リン酸水素カルシウム、ヘクトライト、亜硫酸ナトリウム・７水和物、エトリンジャイト、明礬石（アルナイト）、水滑石（ブルース石）、ダイアスポア、ギブス石（ハイドラーギライト）、カオリナイト、モンモリロナイト、蛇紋石、消石灰、石膏、リン酸亜鉛などが挙げられる。 In the fire spread prevention method of the present invention, the flame retardant is not particularly limited as long as it makes the foaming agent flame retardant or incombustible, but at least one of carbon material, ammonium polyphosphate, ammonium sulfate, and aluminum hydroxide is used. It is preferable to include. The flame retardant is preferably discharged so as to be 10 to 150 parts by mass with respect to 100 parts by mass of the foaming agent. As the carbon material, for example, it is preferable to use thermally expandable graphite. The expandable graphite is, for example, graphite having a property that when heated, a compound existing between graphite layers is thermally decomposed to expand as a whole. This expansive graphite is formed by, for example, graphite acid sulfate, sodium graphite, potassium graphite, halogenated graphite, graphite oxide, aluminum chloride graphitized material, ferric chloride graphite, etc. existing between the graphite layers and thermally decomposing. It may be thermally expanded. The ammonium polyphosphate may be microencapsulated by coating with a resin. Further, the flame retardant may further include a melamine compound powder or a pentaerythritol powder. Moreover, as a flame retardant, you may contain 1 type, or 2 or more types of auxiliary components other than the above-mentioned thing as needed. Auxiliary components include, for example, silica, talc, barium sulfate, aluminum hydroxide, magnesium hydroxide, kaolin, calcium hydrogen phosphate, hectorite, sodium sulfite heptahydrate, ettringite, alunite, talc (Blues stone), diaspore, Gibbs stone (Hydragillite), kaolinite, montmorillonite, serpentine, slaked lime, gypsum, zinc phosphate and the like.
本発明の火災延焼防止方法において、難燃材の吐出方法は、例えば、圧縮空気により飛散させ第２ノズル２５から吐出させるものとしてもよい。 In the fire spread prevention method of the present invention, the method for discharging the flame retardant may be, for example, one that is scattered by compressed air and discharged from the second nozzle 25.
以上説明した本発明の火災延焼防止方法及び延焼防止装置２０は、難燃性発泡剤をより容易に吹き付け処理することができる。例えば、難燃性又は不燃性の材料を発泡材の原料に加えると、粘度が上昇するだけでなく、原料中に比較的大きな無機粉末を含むことになる。そして、吹きつけの際にこの無機粉末と固化した発泡剤とが集まりやすく、ノズルを閉塞しやすくなり、吹き付けが困難になることがある。本発明では、発泡剤と難燃剤とを別々に吐出するため、このようなノズルの閉塞をより抑制することができる。したがって、難燃性発泡剤をより容易に吹き付け処理することができる。 The fire spread prevention method and fire spread prevention device 20 of the present invention described above can spray the flame retardant foaming agent more easily. For example, when a flame-retardant or non-flammable material is added to the raw material of the foam material, not only the viscosity is increased, but a relatively large inorganic powder is included in the raw material. And when spraying, this inorganic powder and the solidified foaming agent are easy to gather, it becomes easy to block | close a nozzle, and spraying may become difficult. In this invention, since a foaming agent and a flame retardant are discharged separately, such blockage | closure of a nozzle can be suppressed more. Therefore, the flame retardant foaming agent can be sprayed more easily.
なお、本発明は上述した実施形態に何ら限定されることはなく、本発明の技術的範囲に属する限り種々の態様で実施し得ることはいうまでもない。 It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.
以下には、難燃性発泡剤を吹き付けた延焼防止対象物の加熱試験を行った結果を参考例として説明する。 Below, the result of having done the heating test of the fire spread prevention target object which sprayed the flame-retardant foaming agent is demonstrated as a reference example.
［参考例１］
熱膨張性黒鉛（市販品）と、ポリリン酸アンモニウム粉末をメラミン系樹脂により被覆したマイクロカプセルと、硫酸アルミニウム粉末と、水酸化アルミニウム粉末（市販品）とを混合し、不燃材とした。ポリウレタン樹脂の第１液としてポリオール水系発泡剤（市販品）を用い、ポリウレタン樹脂の第２液としてポリイソシアネート（市販品）を用い、２液混合したのち、市販の吹付器で延焼防止対象物に対して吹き付けた。このとき、不燃材も吹き付けた。第１液、第２液及び不燃材の比率は、第１液が２５〜４０質量％、第２液が２５〜４０質量％、難燃材が２０〜５０質量％とした。この範囲で配合を変えて複数の発泡剤の試料を作成した。延焼防止対象物としては、ベニヤ板、ガラス板、鋼板、アルミニウム板、ケイ酸カルシウム板、塩化ビニル板、ＦＲＰ板、石膏ボード及びロックウールとした。図４は、難燃性発泡剤の吹き付け後の写真である。図４に示すように、すべての延焼防止対象物に対して吹き付け可能であった。
[Reference Example 1]
Thermally expandable graphite (commercial product), microcapsules coated with ammonium polyphosphate powder with a melamine resin, aluminum sulfate powder, and aluminum hydroxide powder (commercial product) were mixed to obtain a non-combustible material. A polyol aqueous foaming agent (commercial product) is used as the first liquid of the polyurethane resin, and a polyisocyanate (commercial product) is used as the second liquid of the polyurethane resin. I sprayed against it. At this time, incombustible material was also sprayed. The ratios of the first liquid, the second liquid, and the non-combustible material were 25 to 40% by mass for the first liquid, 25 to 40% by mass for the second liquid, and 20 to 50% by mass for the flame retardant. A plurality of foaming agent samples were prepared by changing the composition within this range. As the fire spread prevention object, a veneer plate, a glass plate, a steel plate, an aluminum plate, a calcium silicate plate, a vinyl chloride plate, an FRP plate, a gypsum board, and rock wool were used. FIG. 4 is a photograph after spraying the flame retardant foaming agent. As shown in FIG. 4, it was possible to spray all the fire spread prevention objects.
（延焼防止実験）
吹き付けした試料に対し、ガスバーナにより火炎を最長２０分間接触させ、外観を観察した。その結果、ガラス板、鋼板、アルミニウム板、ケイ酸カルシウム板、石膏ボード及びロックウールの実験では、残炎なし、残じん無しであった。ベニヤ板の実験では、ベニヤ板が炭化した。これについては、吹付材の厚さを均一又は厚くすることにより炭化対策が可能であるものと推察された。塩化ビニル板及びＦＲＰ板では、これらが溶融したため、実験を途中で終了した。しかし、残炎なし、残じん無しであった。このように、本願発明の難燃性発泡剤では、延焼を防止することができることがわかった。
(Expansion prevention experiment)
A flame was brought into contact with the sprayed sample with a gas burner for a maximum of 20 minutes, and the appearance was observed. As a result, in the experiment of a glass plate, a steel plate, an aluminum plate, a calcium silicate plate, a gypsum board, and rock wool, there was no afterflame and no residue. In the plywood experiment, the plywood was carbonized. About this, it was guessed that the countermeasure against carbonization was possible by making the thickness of spray material uniform or thick. Since the vinyl chloride plate and the FRP plate were melted, the experiment was terminated halfway. However, there was no afterflame and no residue. Thus, it was found that the flame retardant foaming agent of the present invention can prevent the spread of fire.
本発明は、消火剤の技術分野に利用可能である。 The present invention can be used in the technical field of fire extinguishing agents.
１０ 延焼防止対象物、２０ 延焼防止装置、２２ 第１吐出装置、２３ 第１ノズル、２４ 第２吐出装置、２５ 第２ノズル、３０ 難燃性発泡剤。 10 fire spread prevention object, 20 fire spread prevention device, 22 first discharge device, 23 first nozzle, 24 second discharge device, 25 second nozzle, 30 flame retardant foaming agent.
Claims (4)
発泡固化する発泡剤を吐出し、前記延焼防止対象物に形成される前の吐出中の前記発泡剤に難燃材を吐出することにより難燃性発泡剤を前記延焼防止対象物に形成する形成工程、を含む火災延焼防止方法。 A fire spread prevention method for preventing the spread of a fire spread object,
Forming a flame retardant foaming agent on the fire spread prevention object by discharging a foaming agent to be solidified and discharging a flame retardant to the foaming agent being discharged before being formed on the fire spread prevention object A method for preventing fire spread including a process.
発泡固化する発泡剤を吐出する第１ノズルと、
難燃剤を吐出する第２ノズルとを備え、
前記第１ノズルは発泡剤を吐出し、前記第２ノズルは前記延焼防止対象物に形成される前の吐出中の前記発泡剤に対して前記難燃材を吐出することにより難燃性発泡剤を前記延焼防止対象物に形成する、
火災延焼防止装置。 A fire spread prevention device for preventing the spread of a fire spread object,
A first nozzle that discharges a foaming agent to be solidified;
A second nozzle for discharging a flame retardant,
The first nozzle discharges a foaming agent, and the second nozzle discharges the flame retardant to the foaming agent that is being discharged before being formed on the fire spread prevention object. Is formed on the fire spread prevention object,
Fire spread prevention device.
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