WO2005050082A1 - Materiau refractaire isolant thermique - Google Patents

Materiau refractaire isolant thermique Download PDF

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Publication number
WO2005050082A1
WO2005050082A1 PCT/JP2003/014769 JP0314769W WO2005050082A1 WO 2005050082 A1 WO2005050082 A1 WO 2005050082A1 JP 0314769 W JP0314769 W JP 0314769W WO 2005050082 A1 WO2005050082 A1 WO 2005050082A1
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WO
WIPO (PCT)
Prior art keywords
fire
resistant
heat insulating
insulating material
paper
Prior art date
Application number
PCT/JP2003/014769
Other languages
English (en)
Japanese (ja)
Inventor
Fujio Kondo
Toru Kawaguchi
Original Assignee
Osaka Oil And Fat Co., Ltd.
Kawaguchi-Mac. Industry Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osaka Oil And Fat Co., Ltd., Kawaguchi-Mac. Industry Co., Ltd. filed Critical Osaka Oil And Fat Co., Ltd.
Priority to PCT/JP2003/014769 priority Critical patent/WO2005050082A1/fr
Publication of WO2005050082A1 publication Critical patent/WO2005050082A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/942—Building elements specially adapted therefor slab-shaped
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/145—Arrangements for the insulation of pipes or pipe systems providing fire-resistance
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures

Definitions

  • the present invention relates to a fire-resistant heat insulating material having a heat-foamable fire-resistant layer in a hollow portion of a base material, wherein the fire-resistant layer foams when exposed to high heat of a fire to exhibit excellent flame-insulating and heat-insulating action.
  • the FRP tube used for the sheath of the optical fiber cable is generally softened at about 150 ° C, and at present, it cannot withstand high heat at the time of fire at all, and the cable is disconnected. In addition, damage occurs, and even if the fire is extinguished in a short time, deterioration is inevitable. Therefore, considering the progress of advanced information technology in the future, it is indispensable to protect the optical fiber cable supporting the communication network from fire, and various protection measures have been proposed based on this. .
  • the protection measures proposed by these proposals have fatal difficulties in terms of actual heat resistance and heat insulation effect, load weight, durability, workability, cost, etc., and none of them have been put to practical use.
  • a multi-cylinder made of a paper tube or the like as a fire-resistant protective tube for protecting various communication cables and pipes including the optical fiber cable from heat at the time of fire In general, a double cylinder) between the inner and outer cylinders, a fire-resistant layer made of a thermally foamable material mainly composed of water-soluble alkali silicate and inorganic powder was developed (Japanese patent application 200). 2 0 1 2 1 2 6 0). This fire-resistant protective tube is used in a form that is fitted over communication cables and piping.
  • the fire-resistant layer is also exposed to external heat. At the stage when the temperature rises to a certain degree, it melts and at the same time foams due to the vaporization of the contained water, and in this foaming process, the effect of lowering the temperature due to the heat of vaporization is exhibited. In addition, it can protect internal communication cables and pipes from the heat of fire for a long time, and is relatively lightweight and durable, providing sufficient practicality. Also, bends in communication cables and pipes are made of a pair of fire-resistant half-split materials with corresponding bent shapes on both sides. The two halves that have been joined and joined are taped and integrated into a cylindrical shape.
  • the raw material composition of the above-mentioned heat-foamable material is generally cleaned by adding a blending component mainly composed of an inorganic powder to a water-soluble aqueous solution of an alkali silicate, such as water glass, and mixing. It is obtained as a water-based paste having a rubber-like or putty-like shape.It can be used not only between the inner and outer cylinders of the above-mentioned fire-resistant protective tube but also in various forms of base materials having hollow parts such as hollow panels.
  • thermally foamable refractory filler layer by injecting and curing into the hollow part, and to form a thermally foamable refractory coating layer by coating and curing on the surface of various substrates (Japan Japanese Patent Laid-Open Publication No. 2003-15055 4 26, Japanese Patent Publication No. 2003-205 5 3 7 8 6).
  • the fire-resistant protective tube according to the prior art has excellent thermal insulation and fire-resistant performance as described above, and has sufficient practicality, it has problems in productivity and workability.
  • One is that when forming the refractory layer in the manufacture of a fire-resistant protective tube, the raw material composition of the heat-foamable material is injected and cured between the inner and outer cylinders.
  • the curing of the raw material composition is carried out by binding the inorganic powder particles as a binder with the water-soluble alkali silicate as the water evaporates.
  • a second object of the present invention is to provide a fire-resistant protective tube having a double-tube structure, which can significantly improve the workability of a long straight section such as a communication cable or a gas pipe, and a communication cable or piping.
  • a refractory heat insulating material according to claim 1 of the present invention is a heat-insulating material comprising a water-soluble alkali silicate and another inorganic powder as main components in a hollow portion of a base material. It is assumed that granules of the material are filled.
  • the heat-foamable material of the refractory layer filled in the hollow portion of the base material is melt-foamed at the time of a fire to exhibit a high degree of flame-insulating and heat-insulating function, while the heat-foamable material is formed.
  • the granulated material can be easily and uniformly filled by pouring by gravity when forming a refractory layer, and since the filled layer functions as a refractory layer as it is, thermal foaming of the aqueous paste It does not require a long time for hardening unlike conductive materials, and therefore has excellent manufacturing efficiency and mass productivity.
  • the refractory layer contains voids as a packed layer of granulated material, it has normal heat insulation and fire. Both have high initial thermal insulation at the time, and the refractory layer has a low density and lightness, so that a lightweight overall is provided.
  • the invention of claim 2 is configured such that the average particle size of the granulated material is 0.1 to 30 mm.
  • the refractory heat-insulating material since a granulated material having a specific particle size is used, it is easy to fill the hollow portion when forming the refractory layer and prevent the formation of the hollow portion. As well as sufficient fire resistance due to the heat-foamable material.
  • the invention according to claim 3 is configured to contain calcium carbonate or / and a formite-based mineral powder as the other inorganic powder.
  • the heat-foamable material contains calcium carbonate and / or formite-based mineral powder.
  • the heat-foamable material contains calcium carbonate and / or formite-based mineral powder.
  • the invention of claim 4 is configured to contain bentonite as the other inorganic powder.
  • the heat-foamable material contains bentonite, the formability of the heat-foamable material during granulation is improved, and the yield of the granulated material is improved. There is an advantage that is improved.
  • the invention according to claim 5 is configured such that the content of the water-soluble alkali silicate in the granulated product is 30 to 90% by weight.
  • the granulated material contains the water-soluble alkali silicate in a specific ratio, the thermal foaming property at the time of fire is sufficiently secured, In addition, a uniform foam layer having excellent heat insulating properties can be generated.
  • the invention according to claim 6 is characterized in that the granulated product contains sodium silicate powder as a water-soluble alkali silicate and is granulated using an aqueous solution of potassium silicate as a binder.
  • a powdery water-soluble alkali silicate which is a basic component of the other heat-foamable material is used, and an aqueous solution of potassium silicate is used as a binder.
  • Granulation as This has the advantage that the crushing strength of the granules is improved and the hardening of the granules is accelerated, leading to an improvement in productivity.
  • the fire-resistant insulation material according to claim 7 of the present invention is the fire-resistant insulation material according to any one of claims 1 to 6, wherein the base material is a double cylinder.
  • the granulated material is filled between the outer cylinder and the inner cylinder.
  • the base material is a double cylinder, and a structure in which a granulated material of a thermofoamable material is filled between the outer cylinder and the inner cylinder.
  • a granulated material of a thermofoamable material is filled between the outer cylinder and the inner cylinder.
  • the invention of claim 8 is configured such that the inner and outer cylinders of the double cylinder in the fire-resistant heat insulating material of claim 7 are formed of a paper tube.
  • the fire-resistant protection tube is lighter, more excellent in workability, and is thermally insulated. What can be manufactured at low cost with good durability and durability is provided.
  • the invention according to claim 9 is configured such that the inner and outer cylinders of the double cylinder are formed of bendable bellows tubes.
  • the ninth aspect of the present invention in the refractory heat insulating material in which the base material is a double cylinder, since the inner and outer cylinders are made of bendable bellows pipes, the bent portions of pipes and cords to be protected against fire are provided.
  • a fire-resistant protective tube that fits over a pipe, a pipe that can cope with a difference in the bent shape and length of the bent portion without any trouble is provided.
  • the average particle size of the granulated material used for the refractory heat insulating material of the seventh to ninth aspects is 3 to 3 Omm.
  • the granulated material since the granulated material has an appropriate particle size with respect to the fireproof protective tube having the double cylindrical structure, the granulated material flows between the inner and outer cylinders of the fireproof protective tube. Filling is easy and a uniform refractory filling layer can be formed.
  • the invention according to claim 11 is the fire-resistant insulation material according to any one of claims 1 to 6, wherein the base material is corrugated cardboard, and the corrugated paper and liner paper are provided. And the hollow portion formed between the granules is filled with the granulated material.
  • a fireproof panel which can be suitably used for the interior / exterior material / packaging material to be protected, a fireproof panel in the form of a corrugated cardboard, having a high flame-insulating and heat insulating function, being inexpensive and easy to manufacture is provided.
  • the invention according to claim 12 is the laminated cardboard in which the base material is formed by laminating corrugated paper and liner paper in a plurality of layers, and at least the hollow portion between the corrugated paper and the double-sided liner paper in the outermost layer on one side.
  • the granules are filled with the granules.
  • a laminated cardboard having a high flame-insulating and heat-insulating function, being inexpensive and easy to manufacture is provided.
  • the invention according to claim 13 is characterized in that at least one of the liner papers in which the base material is adhered to both sides of the corrugated paper is a flexible corrugated cardboard made of a flexible paper material. It is configured such that a hollow portion is filled with the granulated material.
  • a fire-resistant coating exhibiting an excellent flame-insulating and heat-insulating function by being wound around a pipe or a columnar portion to be protected or attached along a non-flat surface such as a curved surface.
  • the present invention provides a flexible corrugated cardboard-type refractory heat insulating material which can be constructed as follows.
  • the average particle size of the granulated material used for the refractory heat insulating material of claims 11 to 13 is 0.1 to 3 mm.
  • the hollow portion between the corrugated paper and the double-sided liner paper has a narrow hole shape.
  • the granulated material has an appropriate particle size, the granulated material into the hollow portion is formed.
  • it is easy to inflow filling and form a uniform refractory filling layer.
  • the invention according to claim 15 is characterized in that in the refractory heat insulating material according to any one of claims 1 to 6, the base material is a hollow panel, O The above granulated material is filled in
  • the inside of the hollow panel is filled with the granulated material of the thermo-foamable material, it has excellent flame-insulating and heat-insulating properties as a structural fire-resistant panel such as a face plate or a wall material. And a lightweight and easy-to-manufacture product is provided.
  • the invention of claim 16 is the fire-resistant heat insulating material of claim 15, wherein the front and back plates of the hollow panel are made of corrugated cardboard, and a hollow portion between the front and back plates is filled with the granulated material.
  • the hollow space between the corrugated paper and the liner paper in each corrugated board of the front and back plates is filled with a powder mainly composed of sodium silicate.
  • the inside of the hollow panel in which the front and back plates are made of corrugated cardboard is filled with the granulated material, and sodium silicate is mainly contained in the hollow portions of each cardboard of the front and back plates. Since the powder is filled with the above-mentioned powder, a fireproof panel for structural use such as a face plate or a wall material, which has better flame-insulating and heat-insulating properties, is lightweight, and is easily manufactured.
  • the invention according to claim 17 is configured such that the hollow panel is a honeycomb board having a honeycomb core interposed between front and back plates.
  • a refractory insulation comprising:
  • an invention according to claim 18 is the fire-resistant insulation material according to any one of claims 1 to 6, wherein the base material has a plurality of pouches connected in one direction. It is a bandage, and each pouch portion of the bandage is filled with the granules.
  • the pouch portion filled with the granulated material is a band-shaped fire-resistant heat insulating material connected in one direction, and is excellently wound around a pipe or a columnar portion to be protected. What can provide a fire-resistant coating that exhibits a flame-insulating and heat-insulating function is also provided.
  • FIG. 1 is a radial cross-sectional view of a fire-resistant protective tube which is a configuration example of the fire-resistant heat insulating material of the present invention.
  • FIG. 2 is an axial sectional view showing a connecting portion of the fire-resistant protective tube.
  • FIG. 3 is an axial cross-sectional view showing a jacket structure at a connection portion of the FRP pipe for an optical fiber and a cable sheath by the fire-resistant protective tube.
  • FIG. 4 is a partially broken side view of a fire-resistant protective tube for a bent portion, which is a configuration example of the fire-resistant heat insulating material of the present invention.
  • Fig. 5 shows the protection structure using the fire-resistant protective tube for the bent part.
  • A is a front view of the U-shaped bent part
  • B is a front view of the U-shaped bent part
  • C is S It is a front view of a character-shaped bending part.
  • FIG. 6 is an axial cross-sectional view showing an end of the fire-resistant protective tube fitted with a cap.
  • FIG. 7 is a cross-sectional view in a thickness direction of a main part of a fire-resistant panel which is a configuration example of the fire-resistant heat insulating material of the present invention.
  • FIG. 8 shows a honeycomb board type heat-resistant heat insulating material according to the present invention.
  • Fig. 2 shows a flammable panel, (A) is a partially cutaway plan view, and (B) is a sectional view taken along line BB of (A).
  • FIG. 9 is a sectional view in a thickness direction of a main part of a refractory panel in a corrugated cardboard form, which is a configuration example of the refractory heat insulating material of the present invention.
  • FIG. 10 is a cross-sectional view in the thickness direction of a main part of a fire-resistant laminated corrugated cardboard material having a fire-resistant layer on one side, which is a configuration example of the fire-resistant heat insulating material of the present invention.
  • FIG. 11 is a cross-sectional view in the thickness direction of a main part of a fire-resistant laminated cardboard material having a fire-resistant layer on both sides, which is a configuration example of the fire-resistant heat insulating material of the present invention.
  • FIG. 12 is a cross-sectional view in the thickness direction of a main part of a refractory covering material in the form of a flexible corrugated cardboard, which is a configuration example of the refractory heat insulating material of the present invention.
  • FIG. 13 is a cross-sectional view in the thickness direction of a main part of a fire-resistant panel in the form of a hollow corrugated cardboard panel, which is a configuration example of the fire-resistant heat insulating material of the present invention.
  • FIG. 14 shows a fire-resistant covering tape in the form of a bandage, which is a configuration example of the fire-resistant heat insulating material of the present invention, (A) is a perspective view, (B) is a cross-sectional view in the thickness direction, and (C) is a use state.
  • the hollow portion of the base material is filled with a granulated material of a thermofoamable material containing water-soluble alkali silicate and other inorganic powder as main components.
  • the packed layer of the granulated material functions as a refractory layer, and when exposed to high heat at the time of fire, the granulated material is melted and foamed and converted into a continuous heat-insulating foamed layer. Demonstrate the function of flame insulation.
  • the granulated material has high fluidity, it can be easily filled into the hollow portion of the base material by flowing into the hollow portion of the base material by gravity.
  • a uniform packed layer can be formed, and it is not necessary to harden it like the aqueous paste in the prior art described above, and the filled layer is left as it is.
  • it functions as a fire-resistant layer, and even when paper is used as a base material, there is no concern that swelling deformation due to the absorption of water, such as aqueous paste, occurs.
  • voids are present between the particles of the granulated material, so that high heat insulation by air in the voids can be obtained in normal times, and even in the event of fire, the initial heat insulation effect by the air can be used.
  • the fire resistance is further improved, and the refractory layer has a low density and is light, so that the weight of the fire-resistant insulation material as a whole is reduced.
  • the water-soluble alkali silicate used for the heat-foamable material of the granulated material is a basic component for providing the heat-foamable property, and contains water vaporized in a molten state by receiving heat in a fire (in the granulated material). (Derived from the water and crystallization water contained in the water) is bubbled and retained in the melt, thereby enabling the formation of a heat-insulating foam layer.
  • the content of the water-soluble alkali silicate in the granulated product is preferably in the range of 30 to 90% by weight. If the content is too small, sufficient thermal foamability cannot be obtained, and if it is too large, the content is too large. The thermal insulation performance of the foam layer generated due to uneven thermal foaming decreases.
  • the water-soluble alkali silicate be mainly made of sodium silicate from the viewpoint of thermal foaming.
  • the other inorganic powder used for the heat-expandable material controls foaming due to heat reception in cooperation with the water-soluble alkali silicate, and appropriately balances the timing of the foaming with the speed to shut off the heat. It contributes to the generation of a uniform foam layer with excellent properties.
  • such other inorganic powder The content in the granulated product is preferably in the range of 10 to 70% by weight. If the content is too small, the thermal foaming becomes uneven and the heat insulating performance of the foamed layer generated is reduced. Sufficient thermal foaming properties cannot be obtained.
  • powders of various inorganic compounds and natural minerals which have been conventionally used as fillers for aggregates of inorganic and organic coating agents can be used.
  • calcium carbonate powder sepiolite Formic acid-based mineral powders such as silica, fine-grained silica such as white carbon and colloidal silica, aluminum hydroxide powder, calcined clay, titanium oxide powder, hydromica powder such as vermiyukilite, calcium silicate powder, Natural glass powder, perlite powder such as parlite, bentonite, kaolins, sillimanite, and baked clay, shirasu-balloon, hollow ceramic particles and the like. These can be used in combination of two or more.
  • the calcium carbonate powder is thermally decomposed at about 900 ° C. to generate carbon dioxide gas, which is foamed when foamed by receiving heat, so that it functions as a foaming aid and forms a foam layer having more excellent heat insulation. It will be generated.
  • formite-based mineral powders such as sepiolite have a fibrous structure, the moisture content in the granulated material is maintained within the appropriate range required for foaming by respiratory action, and during foaming due to heat reception. It prevents the formation of cavities due to the coalescence of bubbles and the uneven distribution of bubbles, and contributes to the formation of a uniform foam layer.
  • the amount of the calcium carbonate powder is preferably within the range of 3 to 15% by weight of the granulated material. If the amount is too small, a sufficient effect cannot be obtained. There is a problem that the hardness of the granules becomes high and the foaming property is reduced. On the other hand, the amount of the formite-based mineral powder is 2 to 8 times % Is preferable. If the amount is too small, a sufficient effect cannot be obtained. On the other hand, if the amount is too large, the crushing strength of the granulated material is lowered, which is not preferable.
  • this blend has the function of improving the formability of the expandable material during granulation, and this blend can reduce the amount of ungranulated powder, thereby improving the yield of the granulated material, and particularly the granulated material with a relatively small particle size. It is suitable for the production of The blending amount of this bentonite is preferably in the range of 04.5 to 10% by weight in the granulated material. There is a problem that the granules are hard to dry.
  • titanium oxide powder has an advantage of exhibiting an antifungal effect.
  • aluminum hydroxide powder undergoes rapid dehydration and decomposition at about 200 to 300 ° C, and has a large cooling effect due to its endothermic reaction and absorption of heat of vaporization due to evaporation of water. Since it contributes to temperature control, it is particularly suitable as a compounding material when the thickness of the refractory layer cannot be increased due to structural restrictions of the base material. Shirasu balloons and hollow ceramic particles contribute to reducing the weight of the granulated material. Since calcined clay has low thermal conductivity, it has the effect of increasing the heat insulation effect.
  • the finely divided silica increases the molar ratio of Sio 2 / M 20 (M is an alkali metal) of the water-soluble alkali silicate as a Sio 2 imparting component, and contributes to prevention of sagging during melt foaming.
  • Hydromica powder such as vermiyukirite is composed of layered particles and thus has an effect of increasing the moisture retention of the granulated material.
  • thermofoamable material used in the present invention is mainly composed of a water-soluble alkali silicate and other inorganic powders. If necessary, various additives such as a granulated material may be used.
  • a short fiber material that is effective in preventing cracking, a humectant that prevents moisture loss of granules due to excessive drying, a binder for granulation, a coloring agent, etc., in a small amount that does not impair the original thermal foamability it can.
  • the above short fiber material As the quality, synthetic resin fiber, glass fiber, carbon fiber, metal fiber, ceramic fiber and the like can be used. It should be noted that synthetic resin fibers are carbonized by receiving heat during a fire and exhibit heat insulation as carbides, and therefore may be flammable.
  • a granulated product made of the above-mentioned thermally foamable material is used.
  • the preferred range of the particle size of the granulated product varies depending on the size (width) of the hollow portion of the base material to be filled, but the average particle size is preferably in the range of 0.1 to 30 mm. In other words, if the particle size is too small, it will be difficult to fill the hollow portion because it is difficult to flow. If the particle size is too large, the particles are in a bridging state during the filling of the hollow portion and are likely to be caught in the middle of the fall, which may cause a large hollow portion. Since the gap between the subsequent particles is large, the fire resistance decreases due to excessive voids in the refractory layer.
  • the granulated material should have an appropriate particle size according to the size of the hollow portion of the base material.
  • the difference between the inner diameter of the outer cylinder and the outer diameter of the inner cylinder is generally about 10 to 100 mm, the workability of inflow filling, filling density, and uniformity It is recommended to set the average particle size of the granulated product in the range of 3 to 30 mm from the viewpoint of filling properties.
  • the average particle size of the granulated material should be set in the range of 0.1 to 3 mm for the narrow hole-shaped hollow portion between corrugated paper and liner paper in corrugated cardboard, which will be described later. Is recommended.
  • the granulated material may be classified with a sieve or the like to make the particle size uniform, but if there is no extremely coarse material, some irregularity in particle size is allowed, and ungranulated powder particles may be formed. It is okay if they are mixed slightly.
  • such a granulated material is filled in the hollow portion of the base material to form a heat-expandable fire-resistant layer, which is a main component of the heat-expandable material.
  • the specific gravity of the water-soluble alkali silicate is 1 or less, and the specific gravity of other inorganic powders is as large as about 3 to 4.Therefore, the granules themselves have low specific gravity and between the filled granules. Because of the formation of voids, the increase in overall weight due to the formation of the refractory layer is not so large.
  • thermofoamable material using a powdery water-soluble alkali silicate (particularly sodium silicate powder) is placed in a container, A method in which particles are grown by rotating or shaking the container while adding a binder solution, a method in which moistened thermofoamable material powder is pressed and molded, and a kneaded wet thermofoamable material Various methods can be adopted, such as a method of extruding an object into a rod shape and cutting it.
  • particle shape of the granulated material there is no particular limitation on the particle shape of the granulated material, and various shapes such as a sphere, a column, a pellet, a tablet, and an agglomerate can be used, but from the viewpoint of fluidity and filling properties, a spherical shape can be used. Is preferable.
  • sodium silicate powder is used as the water-soluble alkali silicate and an aqueous solution of potassium silicate, which is the alkali silicate, is used as the binder during granulation, the amount of water after the granulation is reduced due to water loss.
  • a granulated material having a high pressure crushing strength can be obtained as well as quick drying and curing, and a granulated material having a relatively small particle size is suitable for preventing powdering of particles during handling.
  • the filling port is relatively wide, it can be filled with moisture immediately after granulation to form a refractory layer in which the granules are bonded and integrated, and the encapsulated part can be burned out in the event of a fire. Granules can be prevented from falling out due to tears during handling.
  • the hollow part has a narrow hole shape between the corrugated paper of the base material using corrugated cardboard and the liner paper described below, or if the filling part of the hollow part is narrow, the filling property by pouring will be reduced. It is recommended that dry, hardened, fluidized granules be used to ensure this.
  • FIG. 1 shows a cross section of a fire-resistant protective tube 1A, which is a configuration example of a fire-resistant heat insulating material according to the present invention.
  • the fire-resistant protective tube 1A is provided in the annular space 1a between the inner tube 11 and the outer tube 12 of the double paper tube 1OA serving as the base material, It has a refractory layer 3 filled with 3a ...
  • the moisture contained in the refractory layer 3 is vaporized and foamed, and the entire flame contact portion of the refractory layer 3 is converted into a thick foamed layer by the growth of the bubbles. In this process, the heat of vaporization is deprived and the rise in temperature is suppressed. Excellent fire resistance and heat insulation are exhibited by the formed foam layer, and the inside of the tube is maintained at a low temperature for a long time in combination with the heat insulation effect of the paper layer of the inner cylinder.
  • this fireproof protection pipe 1A is fitted outside the FRP pipe.
  • this fire-resistant protective tube 1A is used as a sheath tube for optical fiber cable, telecommunication cable, electric power cable, chemical and gas, oil plant, and control signal system electric or optical wiring in these components.
  • the protection target of the fire-resistant protective tube 1A may be indoor piping or underground piping, and is also suitable for fire protection of communication cables and city gas pipes in common trenches buried underground. If a fire extinguishing tool is accidentally contacted and damages the fire-resistant protective tube during various types of construction work excavating the ground, it will be less likely to break or break the internal gas tube. Therefore, gas leakage accidents associated with construction can be drastically reduced. It is also possible to use a large-diameter fire-resistant protective tube 1A to enclose a plurality of different or similar types of cables, wiring, and piping, and to use water pipes to prevent damage.
  • the inner and outer cylinders 11 and 12 of such a fire-resistant protective tube 1A should be of appropriate diameter depending on the thickness of the pipe or cable to be protected.
  • the difference between the outer diameter of the cylinder 11 and the inner diameter of the outer cylinder 12 is in the range of 10 to 100 mm, that is, the thickness of the refractory layer 3 filled with the granules 3 a is 5 to 50 mm. Is suitable. This is because if the thickness of the refractory layer 4 is too thin, sufficient heat insulation and heat insulation cannot be obtained, while if it is too thick, it becomes bulky and heavy, and its utility value as the fire-resistant protective tube 1A decreases. By doing.
  • the thickness of the inner and outer cylinders 11 and 12 is preferably about 1 to 10 mm from the viewpoint of securing rigidity and reducing the weight of the fire-resistant protective tube 1A.
  • the granulated material 3a used for the fire-resistant protective tube 1A has an average particle size of 3 to 3 from the viewpoints of workability of inflow filling, filling density, and uniform filling. O mm is suitable.
  • the inner and outer tubes 1 can be easily formed even if it is long.
  • the refractory layer 3 can be formed by filling the granules 3 a. Therefore, when fitting a long straight section such as a communication cable or gas pipe installed over a long distance, the use of a long fire-resistant protection pipe 1A is necessary for fitting and connecting work of the protection pipe. Work and time can be reduced, and construction efficiency can be significantly improved.
  • the paper tube of the outer tube 12 may contain a flame retardant or a feather component on its surface or inside.
  • a flame retardant when included, the paper tube is carbonized without burning when exposed to the high heat of a fire, so that it is possible to reliably prevent the spread of the paper tube.
  • feather component when feather component is included, its excellent water repellency 2 O
  • Dew condensation can be prevented by the nature of water, so that the deterioration of the paper core due to the intrusion of dew water can be avoided.
  • the feather component does not hinder the flow of moisture (water vapor) itself through the paper core. Moderate moisturizing condition can be maintained.
  • a paint in which feathers are dispersed may be applied to the surface of the paper tube, but the method of winding and sticking the feather coated paper on the surface of the paper tube is simple. It is. Also, in order to incorporate the feather component into the inside of the paper tube, use a feather-coated paper or a feather-coated paper in which feathers are mixed in a papermaking raw material as the paper material used for forming the paper tube, or use the paper material in forming the paper tube. A paint in which feathers are dispersed at the time of winding may be applied. Further, it is recommended that the both end surfaces of the paper tube be coated with a synthetic resin emulsion such as urethane emulsion as a seal.
  • a connecting short tube 13 whose inner diameter is substantially equal to the outer diameter of the outer tube 12 is used.
  • the ends of the fire-resistant protective tubes 1 A, 1 A are fitted to the body 13 from both sides, butted, and the connecting short tubular body 13 and the two fire-resistant protective tubes 1 A, 1 A are fixed. do it.
  • an adhesive may be applied to one or both of the inner peripheral surface of the connecting short cylindrical body 13 and the outer peripheral surfaces of both the fireproof protective tubes 1A, 1A.
  • a simple tabbing method is used to wind the boundary between the outer peripheral surfaces of both the refractory protection tubes 1A, 1A with the peripheral edges of the short cylindrical body 13 with adhesive tape.
  • the connecting portion between the FRP pipes 2 and 2 is a base material similar to the above-described fire-resistant protecting tube 1A as the fire-resistant protecting tube 1B for the connecting portion.
  • the annular space 1b between the inner and outer cylinders 14 and 15 of the heavy paper tube 10B has a refractory layer 3 filled with a granulated material 3a of a thermofoamable material. It has a length that can accommodate the fitting portion 2a and has an inner diameter that can be fitted to the annular bulging portion 2b, and the outer tube 15 has the outer diameter of the outer tube 12 of the normal fire-resistant protective tube 1A.
  • An outer cylinder 15 having substantially the same inner diameter and both ends of the outer cylinder 15 projecting beyond the inner cylinder 14 is used.
  • the ends of the fire-resistant protective tubes 1A, 1A on both sides are fitted inside the projecting both ends of the outer cylinder 15 of the fire-resistant protective tube 1B for the connecting portion.
  • the fire-resistant protective tube 1B and the fire-resistant protective tubes 1A, 1A on both sides are butted and fixed to each other.
  • an adhesive or an adhesive tape may be used in the same manner as in the case of the connecting short cylinder 13 described above.
  • the fire-resistant protective tube 1A used for the fire-resistant protection of the FRP tube 2 which is the outer cover of such an optical fiber cable, has an outer diameter (generally 60 mm) of the FRP tube 20. Set to a slightly larger inside diameter (usually 61.5 mm).
  • the FRP pipe 2 which is generally used for the above-mentioned jacket, has a length of usually 4 to 5 m, and a predetermined interval (generally 2 O mm), the two marked lines 22a and 22b are displayed.
  • the end of one fitting part 2a Is positioned between the other two reference lines 22a and 22b, so that there is a gap between the tip of the other FRP pipe 2 and the back end of the fitting portion 2a, and shrinkage due to temperature change, etc. It is set to absorb the length fluctuation due to
  • the fire-resistant protective tube includes a tube whose inner and outer tubes are not a paper tube, but it is preferable that at least the outer tube is a paper tube, and particularly, both the inner and outer tubes are a paper tube as in the above configuration example. Things are best.
  • the outer tube was a paper tube, it was carbonized during a fire as described above. Although it burns down on the top, it contributes to heat insulation at the stage of the carbonized layer before burning, and then the refractory layer is directly exposed to high heat due to the burning, so that melt foaming starts smoothly, and expansion due to this melt foaming is hindered. It produces a uniform and thick foam layer, which can provide excellent flame insulation and heat insulation. In normal times, however, the moisture content of the granulated material 3a in the refractory layer 3 is moderate due to the moisture retention and respiration of the paper. O
  • the paper tube has better light resistance than the synthetic resin tube, when it is used as a fire-resistant protective tube at a site exposed to the outside, the deterioration with time is small and the durability is good.
  • the paper tube is lighter in material, the inner and outer tubes are made of a paper tube so that the entire fire-resistant protective tube can be reduced in weight. Since the weight increase when the cable or the like itself is inserted into the cable itself is reduced, the load applied to the pipe mounting portion is reduced, the piping work is facilitated, and the handling property such as transportation is improved.
  • the paper tube itself is excellent in heat insulation and tough, and can secure sufficient rigidity with a certain thickness.
  • FIG. 4 shows a bendable fire-resistant protective tube 1C, which is a configuration example of the fire-resistant heat insulating material according to the present invention.
  • the bendable fire-resistant protective tube 1C is used for a bent portion of a pipe or a cable body such as the FRP tube 2, and is made of aluminum bellows constituting a flexible double tube 10C of a base material.
  • a granulated material 3a of a thermofoamable material mainly composed of the same water-soluble alkali silicate and other inorganic powder as described above is used in the annular space 1 between the inner cylinder 16 and the outer cylinder 17 each composed of a pipe.
  • a granulated material 3a of a thermofoamable material mainly composed of the same water-soluble alkali silicate and other inorganic powder as described above is used. It has a refractory layer 3 filled with.
  • the bellows tubes of the inner tube 16 and the outer tube 17 are provided with spiral irregularities at a fine pitch throughout
  • the bendable fire-resistant protective tube 1C has a bent portion of a pipe or a cable body that cannot be fitted with the straight tubular fire-resistant protective tube 1A, for example, a round shape as shown in FIG. 5 (A).
  • Various bends such as a U-shape as shown in Fig. 5 (B) and an S-shape as shown in Fig.
  • FIGS. 5 (A) to 5 (C) P is a pipe or a cable to be protected, and is fitted on both ends of the bendable fire-resistant protective tube 1C fitted on the bent portion and on the straight portion.
  • the connection with the end of the fire-resistant protective tube 1A is made by tubing using a short tube 13 for connection as shown in the figure, similarly to the connection between the fire-resistant protective tubes 1A and 1A described above. It only has to be fixed.
  • the bellows tube used for the inner tube 16 and the outer tube 17 of the fire-resistant protective tube 1C for the bent portion those made of metal other than aluminum, plastic, paper, etc. can be used. These are most suitable in terms of corrosion resistance, durability, strength, price, light weight, etc. in addition to being able to use the commercial products described above.
  • the bellows structure for making it bendable is not limited to the structure having the spiral unevenness described above, but may be a structure having a non-spiral (annular) unevenness on the tube, or a large number of rings. Other bellows structures, such as a tubular structure, can also be used.
  • the bellows tube of the outer cylinder 31 is made of aluminum adhesive tape to prevent condensation or rainwater from accumulating in the bellows groove and to ease handling such as carrying due to excessive bending.
  • the entire outer peripheral surface may be covered by appropriate means such as winding.
  • the above-mentioned straight tubular fire-resistant protection tube 1 A, the connection-resistant fire-resistant protection tube 1 B For the fire-resistant heat insulating material in the form of a tube, such as a fire-resistant protective tube for a bent part 1C, etc., in order to prevent the granules 3a of the fire-resistant layer 3 from spilling out during storage or transportation, see FIG.
  • the cap 18 in FIG. 6 is composed of an inner fitting cylinder portion 18a fitted inside the inner cylinder 11 (14, 16) and the outer cylinder 12 (15, 17). Since it has the outer fitting cylinder portion 18b that fits inside, it also has the function of holding the inner and outer cylinders concentrically.
  • FIG. 7 shows a fire-resistant panel 4 which is a configuration example of the fire-resistant heat insulating material according to the present invention.
  • This fire-resistant panel 4 is mainly composed of the same water-soluble alkali silicate and another inorganic powder as described above in the hollow portion 4a between the front and back face plates 41 and 41 constituting the hollow panel 40 of the base material. It has a fire-resistant layer 3 filled with granules 3a of the heat-expandable material. Like the above-mentioned fire-resistant protective tubes 1A to 1C, the heat-expandable material of the fire-resistant layer 3 is melted and foamed at the time of fire.
  • the filling inlet portion (Not shown) is small, it is possible to form a uniform refractory layer 3 over the entire hollow portion 40 by pouring the granules 3 a.
  • the refractory layer 3 is low-density and light, the entire panel is lightweight, and is excellent in workability and handling such as transportation, and the weight burden on the mounting portion can be reduced.
  • FIGS. 8A and 8B show a fire-resistant panel 5 in the form of a honeycomb board, which is a configuration example of the fire-resistant heat insulating material according to the present invention.
  • This refractory panel 5 has a honeycomb board 5 in which a base material has a honeycomb core 52 interposed between both side surfaces 51 and 51.
  • Granules 3a of a thermofoamable material mainly composed of the same water-soluble aluminum silicate and other inorganic powder as described above are formed in each hollow portion 5a divided by the honeycomb core 52.
  • a refractory layer 3 filled with is formed. Then, face plate 5
  • the honeycomb core 52 has a structure in which linear strips 52a and corrugated strips 52b are alternately arranged.
  • the heat-foamable material of each refractory layer 3 melts and foams to exhibit excellent flame-insulating and heat-insulating functions. Since the fire-resistant panel 5 has a high rigidity in the form of a honeycomb board, it is possible to provide a high heat-insulating and high fire-resistant panel or wall material.
  • the honeycomb core 52 in the honeycomb port 70 of the base material is made of paper, but other materials such as metal and wood can be used, and the hollow portions 5a are also rectangular, triangular, hexagonal, etc. Can be set to various shapes. In applications where only one side may be exposed to fire, only one side may be made of paperboard or wood board and the other side may be made of metal.
  • FIG. 9 shows a cardboard-shaped fire-resistant panel 6A, which is a configuration example of the fire-resistant heat insulating material according to the present invention.
  • the fire-resistant panel 6A is a corrugated cardboard 60A in which a liner made of paperboard 62, 62 is adhered to both sides of a corrugated paper 61 having a rigid base material.
  • a large number of parallel-hole-shaped hollow portions 6a formed between the liner papers 62, 62 of the same type are each made of a heat-soluble aluminum silicate and another inorganic powder as described above.
  • the refractory layer 3 is formed by filling the granules 3 a of the expandable material.
  • the moisture contained in the refractory layer 3 is vaporized and foamed, and the growth of the foam converts the entire flame-contacting portion of the refractory layer 3 to a thick foamed layer. In this process, heat of vaporization is deprived and the temperature rise is suppressed.
  • the generated foam layer exerts excellent fire resistance and heat insulation, and the inner surface is maintained at a low temperature for a long time in combination with the heat insulation effect of the paper layer of the inner liner paper 62.
  • the fire-resistant panel 6A is in the form of corrugated cardboard made of paper, it can protect the wrapped inner part from the high heat of a fire for a long time.
  • the base material itself is a corrugated ball 6 OA, it can be mass-produced at low cost, and since the granulated material 3 a is used to form the refractory layer 3, a thin hole having hollow portions 6 a arranged in parallel. Nevertheless, since the uniform refractory layer 3 can be easily formed over the entire hollow portion 6a by the method of pouring from the opening end, the whole can be manufactured efficiently and at low cost.
  • the granulated material 3a is efficiently flowed and filled into the narrow hole-shaped hollow portion 6a- of the corrugated cardboard 60 to form the uniform refractory layer 3 having a high filling density.
  • FIGS. 10 and 11 show the fire-resistant laminated corrugated cardboard materials 6B and 6C, which are examples of the structure of the fire-resistant heat insulating material according to the present invention.
  • the base material of these fire-resistant laminated corrugated cardboard materials 6 B and 6 C is composed of laminated corrugated cardboards 60 B and 60 C in which rigid corrugated paper 61 and liner paper 62 made of paperboard are alternately laminated and adhered.
  • only the outermost layer on one side of the multilayer structure (three layers in the figure) is used for the fire-resistant laminated corrugated cardboard material 6B, and the outermost layers on both sides of the multilayer structure (four layers in the figure) are used for the fire-resistant laminated cardboard material 6C.
  • a refractory layer 3 filled with a ... is provided.
  • fire-resistant laminated corrugated cardboard materials 6 B and 6 C were excellent in that the heat-foamable material of the fire-resistant layer 3 was melted and foamed when the surface side on which the fire-resistant layer 3 was provided was exposed to the high heat of a fire. Converted into a heat-insulating foam layer that exhibits flame-insulation and heat-insulating properties, it can be used as a structural fire-resistant panel such as a face plate or wall material by itself, and does not have a fire-resistant layer 3 in normal times. Since the air space in the hollow space 6b... can exhibit heat insulation and sound insulation, it can also be used as a heat insulation / sound insulation with high fire resistance.
  • these corrugated cardboard materials 6 B and 6 C have higher strength than ordinary laminated corrugated cardboard due to the rigidity of the outermost layer having the refractory layer 3. Since it is relatively lightweight, it can be handled almost like normal cardboard. Therefore, in the case of the fire-resistant laminated corrugated cardboard material 6B, the fire-resistant layer 3 is provided on the side exposed to high heat when a fire occurs. Needless to say, the surface on the holding side is located.
  • the fire-resistant laminated corrugated cardboard materials 6 B and 6 C are provided with a fire-resistant layer 3 only on the outermost layer on one side or both sides, the fire-resistant layer 3... including the outermost layer on one side or both sides is provided. It is also possible to provide a fireproof layer 3 on all layers.
  • the total weight increases as the number of layers provided with the refractory layers 3 increases, but the flame-insulation and heat-insulating properties and the rigidity increase accordingly, so that it may be suitable in some applications as a fire-resistant laminated cardboard material.
  • FIG. 12 shows a fireproof covering material 7 in the form of a flexible corrugated ball, which is a configuration example of the fireproof heat insulating material according to the present invention.
  • the fire-resistant coating material 7 is a flexible corrugated cardboard 70 in which a liner made of a flexible paper material (so-called crepe liner paper) 72, 72 is adhered to both sides of a corrugated paper 71.
  • a large number of parallel-hole-shaped hollow portions 7a formed between the corrugated paper 71 and the liner papers 72, 72 on both sides are provided with the same water-soluble aluminum silicate and the other
  • the refractory layer 3 is formed by filling granules 3 a.
  • such a fire-resistant covering material 7 melts and foams the heat-foamable material of the fire-resistant layer 3 when exposed to the high heat of a fire. It forms a heat-insulating foam layer, but because it can be bent as a whole, it is excellent when it is wrapped around a pipe or columnar part to be protected or adhered along a non-flat surface such as a curved surface.
  • a fire-resistant coating that exhibits a flame-insulating function can be configured.
  • the flexible corrugated cardboard ⁇ 0 of the above-mentioned base material is made of a flexible paper material for both of the liner papers 72, 72 on both sides, but the use form of the fire-resistant coating material 7 always has a concave surface on one side. In this case, only one of the liner papers 72 (the concave side) may be made of a flexible paper material.
  • the refractory layer 3 is formed by filling the hollow portion between the corrugated corrugated paper of the cardboard and the liner paper as in the coating material 7 to form the refractory layer 3, the hollow portion after the filling is formed. It is preferable to close the opening with an adhesive tape or the like in order to prevent the granules 3a from flowing out, or to apply water or a binder to bind the granules 3a to the opening.
  • FIG. 13 shows a fire-resistant panel 8 in the form of a hollow cardboard panel, which is a configuration example of the fire-resistant heat insulating material according to the present invention.
  • This fire-resistant panel 8 is a hollow corrugated pole panel 80 using corrugated cardboard for the front and back face plates 81 and 81, and the same as described above in the hollow portion 8a between the two-sided plates 81 and 81.
  • a fire-resistant layer 3 filled with granules 3 a of a thermo-expandable material mainly composed of a water-soluble alkali silicate and another inorganic powder is formed, and corrugated paper 8 1 a at a step pole of each face plate 8 1 is formed.
  • a powder-filled layer 82 mainly composed of sodium silicate is formed in a hollow portion 8b between the liner papers 81b on both sides.
  • this fire-resistant panel 8 in the form of a hollow corrugated cardboard panel, when exposed to the high heat of a fire, the heat-foamable material of the fire-resistant layer 3 between the double-sided boards 8 1 and 8 1 is melted and foamed to provide excellent flame insulation and heat insulation.
  • the filler layer 82 of the face plate 81 on the fire side is also converted to a foam layer with the melting of the sodium silicate.
  • the foamed layer converted from the packed layer 82 does not have a good foaming state because the packed layer 82 is made of a powder mainly composed of sodium silicate, but exhibits a certain degree of flame-insulating and heat-insulating properties. Therefore, the function of enhancing the fire resistance of the panel as a whole is complemented by the flame insulation function provided by the refractory layer 3.
  • corrugated cardboard is used for the front and back face plates 81, 81 to increase the rigidity of the panel, but the hollow portion 8 of the corrugated cardboard has a small hole diameter, and the space between the face plates 81, 81 is small. Since it is difficult to fill the granules 3a... used for the refractory layer of the hollow portion 8a of the granules 8a, instead of the granules 3a... 3 O
  • the powder is mainly filled with sodium silicate to supplement the fire resistance. If the hollow portions 8b... Of the cardboard of the face plates 81, 81 remain empty, they will spread in the surface direction of the face plate 81, and thus will not function as fireproof panels. When the hollow portions 8b are filled with an inorganic powder having no heat-foaming property, the flame-insulating and heat-insulating properties naturally become insufficient. Further, when paperboard is used for the front and back plates 81, 81, the rigidity of the panel is reduced.
  • the fire-resistant panel 6 A the fire-resistant laminated cardboard material 6 B, 6 C, the fire-resistant covering material 7, the fire-resistant panel 8, etc., the surface paper material (liner paper 62, 72, 81, face plate) 5 1)
  • flame retardants and feather components are contained on the surface or inside, and water resistance, makeup, antifouling, surface It is possible to apply various coatings for the purpose of protection or the like, and to adhere a synthetic resin film for the same purpose.
  • FIGS. 14 (A) and 14 (B) show a fire-resistant covering tape 9 in the form of a bandage, which is a configuration example of the fire-resistant heat insulating material according to the present invention.
  • the fire-resistant coated tape 9 is composed of a bandage 90 in which two base sheets 91, 91 are attached to each other at regular intervals in the longitudinal direction so as to form a small bag 9a.
  • the refractory layer 3 is formed by filling each pouch portion 9a with a granulated material 3a of a thermofoamable material mainly composed of the same water-soluble alkali silicate and other inorganic powder as described above. I have.
  • Such a fire-resistant covering tape 9 exhibits an excellent flame-insulating and heat-insulating function because the heat-foamable material of the fire-resistant layer 3 in each pouch 9a is melted and foamed when exposed to the high heat of a fire.
  • a high-performance fire-resistant coating can be constructed by wrapping it around the pipe or columnar part to be protected.Especially in the form of tape, the bent part of the pipe P can be easily protected by fire as shown in Fig. 14 (C). There are advantages that can be done.
  • the base sheet 91 is made of paper, metal foil such as aluminum foil, synthetic resin film, or synthetic resin film made of metal such as aluminum.
  • a metal-deposited film, metal-laminated paper obtained by polymerizing paper and a metal foil such as aluminum foil, and the like are used.
  • an adhesive tape is stuck on the wound part, or one side (the lower surface side at the time of winding) is previously provided with a release paper. What is necessary is just to provide an adhesive layer, and to adhere to a protection target with the adhesive layer.
  • the granulated material was kept in a wet state immediately after granulation, and the vertically held double cylinder was combined with an outer cylinder (inner diameter 152 mm, thickness 5 mm, length 2 m) consisting of a paper tube. Between the inner cylinder (inner diameter 65 mm, thickness 6 mm, length 2 m), pour it into the entire double cylinder while vibrating with a vibrator By filling with, a fire-resistant protective tube having a fire-resistant layer between the inner and outer cylinders was produced.
  • the outer surface of the paper tube has a flame retardant (manufactured by Riki Co., Ltd.
  • a F-20 C) was applied, and feather coated paper was wound and adhered to the surface.
  • a fire-resistant protective tube was prepared in the same manner as in Example 1 except that the blending amount of JIS No. 3 sodium silicate powder in the thermally foamable material was changed to 65 parts and the blending amount of sepiolite powder was changed to 10 parts. did.
  • a fire-resistant protective tube was manufactured in the same manner as in Example 1, except that the blending amount of JIS No. 3 sodium silicate powder in the thermally foamable material was changed to 48 parts and the blending amount of sepiolite powder was changed to 24 parts. did.
  • the blending amount of JIS No. 3 sodium silicate powder in the thermally foamable material was changed to 78 parts, and carbon short fiber (Odor S-332, manufactured by Osaka Gas Co., Ltd., fiber length 1 to 10 mm, fiber diameter 10) 330 zm)
  • a fire-resistant protective tube was produced in the same manner as in Example 1 except that 0.2 part was additionally added.
  • a fire-resistant protective tube was produced in the same manner as in Example 1, except that a heat-foamable material having the following composition was used.
  • a fire-resistant protective tube was produced in the same manner as in Example 1, except that a heat-foamable material having the following composition was used.
  • JIS No. 3 sodium silicate powder (same as in Example 1) ⁇ ⁇ ⁇ 680 parts calcium carbonate powder (as in Example 1) ⁇ ⁇ ⁇ 100 parts Sepiolite powder (as in Example 1) ⁇ ⁇ ⁇ 70 parts Titanium oxide powder (same as in Example 1) ⁇ ⁇ ⁇ 30 parts Calcined clay (same as in Example 5) ⁇ ⁇ ⁇ 60 parts Aluminum hydroxide powder (same as in Example 5) ⁇ ⁇ ⁇ 60 Department
  • Each of the fire-resistant protective tubes of Examples 1 to 6 above was held in a horizontal state, and the flame of the gas burner was continuously and directly applied to the peripheral surface from the lower side and the left and right sides simultaneously by direct flame. While observing the situation, the temperature of the flame contact surface and the inner surface of the tube were measured with a thermocouple.
  • the paper tube of the outer cylinder was burned and spread by a diameter of about 10 Omm around the flame contact part, and carbonized. It does not spread further, and after 10 minutes, the carbonized layer is burned off, and the red-hot granules of the exposed refractory layer begin to expand due to thermal foaming.
  • the temperature of the inner surface of the tube was still less than 60 ° C even after 30 minutes, although the temperature of the flame contact surface was about 100 ° C from the beginning.
  • the resistance to Regarding the fire protection tube the same applies when the FRP tube (outer diameter 60 mm) for the optical fiber cable jacket is passed through the tube together with the fire resistance test of this fire protection tube alone.
  • a fire resistance test was performed on the FRP tube, and the temperature inside the FRP tube was measured with a thermocouple. The temperature inside the tube was slightly less than 50 minutes after 30 minutes.
  • Example 2 the granulated material produced from the inclined rotating disk type granulator was converted into a kiln-type rotating inclined cylinder (inner diameter 500 mm, length 3 m, inclination angle 1
  • An outer cylinder (outer diameter 162 mm, thickness 0.3 mm, length 1 m) consisting of a spirally wound bellows structure) and an inner cylinder (outer diameter 77 mm, thickness 0.3 mm, length) lm), and filled to form a fire-resistant protective tube for the bend with a fire-resistant layer between the inner and outer cylinders.
  • the fire-resistant protective tube for a bent portion was freely bendable into a U-shape or an S-shape with the synthetic resin cap 6 shown in FIG. 6 fitted at both ends.
  • a Vantec FRP pipe was held horizontally as a core material in the inner cylinder of the bendable fire-resistant protective tube of Example 7 in a state of being fitted thereinto, and was simultaneously held from the lower side and the left and right sides with respect to the peripheral surface thereof.
  • the flame of the gas burner was continuously applied with direct flame, and the temperature of the flame contact surface and the inner surface of the pipe was measured with a thermocouple.
  • the temperature of the flame contact surface was about 100 ° C from the beginning. Nevertheless, the temperature of the inner surface of the pipe was about 40 ° C even after 30 minutes.
  • the bellows tube of the outer cylinder after the test was not broken and was slightly swelled around the flame contact part. When the bellows tube was cut open, it was found that the refractory layer filled with the inner granules had been converted into a continuous foam layer with a diameter of about 40 mm spread around the flame contact part.
  • Example 2 The humidified granules produced in the same manner as in Example 1 were placed inside a hollow panel made of plywood of 10 Omm in length and width (0.5 mm each in the front and back plates, 25 mm between the front and back plates). Then, a refractory panel having a refractory layer between the front and back plates was prepared.
  • the fire-resistant panel of Example 8 was fixed horizontally, and a thermocouple was attached to the upper surface position corresponding to the flame contact position on the lower surface side, and the flame of the gas burner with a flame temperature of 870 ° C. It was heated with a direct flame and continuously heated, and the temperature on the upper surface was measured. As a result, even after 30 minutes from the start of heating, the upper surface temperature was less than 60 ° C, and it was found that the material had excellent adiabatic fire resistance. In this fire resistance test, one minute after the start of heating, the area around the flame contact position of the plywood on the lower surface of the panel disappeared, and two minutes later, the inside of the granulated material of the fire resistant layer started thermal foaming. The refractory layer was converted into a continuous foam layer with a diameter of about 100 mm centering on the flame contact part.
  • JIS No.3 sodium silicate powder (same as in Example 1) ⁇ 80 parts Calcium carbonate powder (same as in Example 1) • ⁇ 8 parts Sepiolite powder (same as in Example 1) • ⁇ 4 parts Water Aluminum oxide powder (same as in Example 5) 6 parts Titanium oxide powder (FA-55 W manufactured by Furukawa Machinery & Metal Co., Ltd.) 2 parts Bentonite (Kunigel V1 manufactured by Kunimine Industries Co., Ltd.) 3 Part
  • the thermally foamable material having the above composition is uniformly mixed with a Hensyl mixer, and the obtained powder mixture is fed by a fixed-rate feeder using an inclined rotary disk granulator.
  • Rotating round dish-shaped container (inner diameter 150 mm, peripheral edge height 140 mm, inclination angle 45 °, rotation speed 40-50 Hz) While supplying continuously at a rate of 600 gZ, a 1.2% strength aqueous solution of potassium silicate (No. 2 potassium silicate, manufactured by Osaka Silica Soda Co., Ltd.) was supplied at a rate of 135 m1 / min. (Equivalent to 1.5 parts of potassium silicate in the granulated product) was sprayed from above into the container to produce a granulated product having an average particle size of about 0.5 mm.
  • potassium silicate No. 2 potassium silicate, manufactured by Osaka Silica Soda Co., Ltd.
  • a corrugated cardboard of 55 cm in length and width and 10 mm in thickness corrugated paper thickness of 200 zm, corrugated pitch of 8 mm, liner paper
  • a hole-shaped hollow part having a thickness of 400 urn was inflow-filled through a filling funnel to form a fire-resistant layer, thereby producing a cardboard-shaped fire-resistant panel.
  • Laminated corrugated cardboard (thickness: 55 cm, total thickness: 30 mm) with a three-layer structure (corrugated paper thickness: 200 ⁇ m, corrugated pitch: 14 mm, liner thickness: 400 ⁇ m)
  • the same dried granules as in Example 9 were flowed into the hole-shaped hollow portion between the outermost layer of corrugated paper on one side and the liner paper on both sides to form a fire-resistant layer.
  • a fire-resistant laminated cardboard material was produced.
  • the fire-resistant panel in the form of corrugated cardboard of Example 9 and the fire-resistant laminated cardboard material of Example 10 were fixed horizontally with the fire-resistant layer forming side down in the latter laminated cardboard material, and placed below.
  • the liner paper on the lower surface of both of them reached a diameter of about 1 It was burnt into a 5 O mm circle and burned off, and after about 2 minutes, the granulated material inside the refractory layer started to thermally foam. However, even after 30 minutes from the start of heating, the lower surface side is burned.
  • the refractory layer was converted to a continuous foam layer with a diameter of about 200 mm and a continuous area centered on the flame contact part.
  • Example 1 Calcium carbonate powder (same as in Example 1) ⁇ ⁇ ⁇ 10 parts Sepiolite powder (same as in Example 1) ⁇ ⁇ ⁇ 3 parts Titanium oxide powder (same as in Example 1) ⁇ ⁇ ⁇ 2 parts bentonite (same as in Example 9) ⁇ ⁇ ⁇ 3 parts Granulation was performed in the same manner as in Example 9 except that the heat-foamable material had the above composition, and granulation having an average particle size of about 0.5 mm was performed. Things were produced.
  • JIS No.3 sodium silicate powder (same as in Example 1) 70 parts hollow ceramic particles (SL-350 manufactured by Taiheiyo Cement Corporation)
  • Example 9 Calcium carbonate powder (same as in Example 1) ⁇ ⁇ ⁇ 10 parts Sepiolite powder (same as in Example 1) ⁇ ⁇ ⁇ 4 parts Titanium oxide powder (same as in Example 1) ⁇ ⁇ ⁇ 2 copies Bentonite (same as in Example 9) 3 parts Granulation was carried out in the same manner as in Example 9 except that the thermally foamable material had the above composition, and a granulated product having an average particle size of about 0.5 mm was obtained. This was dried in the same manner as in Example 9.
  • a 3-layer laminated flexible corrugated cardboard of 55 cm in length and width and 10 mm in thickness (180 m in thickness of single-sided liner paper, 900 m in thickness of one-sided clay liner paper, corrugated paper)
  • the thickness of the hole is 172 ⁇ m and the shaping pitch is 13 mm)
  • the granulated material is filled in the hole-shaped hollow part to form a refractory layer.
  • Example 11 The fire-resistant panel in the form of a honeycomb board in Example 1, the fire-resistant panel in the form of a hollow corrugated cardboard panel in Example 12, and the fire-resistant covering material in the form of a flexible cardboard in Example 13 are fixed horizontally.
  • a thermocouple is attached to the upper surface position corresponding to the flame contact position on the lower surface, and the flame of the gas burner with a flame temperature of 840 placed below is directly heated by an open flame to continuously heat the upper surface. The side temperature was measured. As a result, it was found that both the refractory panel and the refractory coating material had an upper surface temperature of less than 60 ° C even after 30 minutes from the start of heating, exhibiting excellent adiabatic fire resistance performance.
  • the fireproof panel in the form of honeycomb board and the fireproof covering material in the form of flexible corrugated board were exposed to flame on the paper layer (face plate, liner paper) on the lower side approximately 1 minute after the start of heating.
  • the paper layer face plate, liner paper
  • the granulated material inside the refractory layer started thermal foaming, and the refractory layer after the test was in contact with flame It was converted to a continuous foam layer with a diameter of about 20 Omm spreading around the center.
  • the refractory layer in the hollow section started thermal foaming, and after the test, the refractory layer expanded about 20 cm in diameter centering on the flame-contacting part and expanded to a continuous foam layer.
  • Each sachet of a bandage (57 mm long, 32 mm wide, spacing between sachets) with two strips of aluminum laminating paper with a thickness of 64 m and a width of 41 mm
  • Example 9 18 mm was filled with 5 g of the same dried granules as used in Example 9 above, and a fire-resistant coated tape in the form of a bandage having the configuration shown in FIGS. 14 (A) and (B) was used. Produced.
  • the fire-resistant coating tape of Example 14 was wound five times around the outer periphery of an FRP elbow pipe having an outer diameter of 6 Omm, and an adhesive paper tape was wound therefrom and fixed to form a fire-resistant coating. Then, the flame of the gas burner at a flame temperature of 840 was continuously applied directly to the peripheral convex side of the middle part of the elbow pipe by direct flame, and the inner surface temperature of the pipe at the flame contacting part was measured with a thermocouple. did. As a result, after about 2 minutes, the surface of the wound layer of the refractory coated tape was burned and spread by a diameter of about 15 Omm around the flame contact area, but it did not spread any more. Even after 30 minutes, the temperature in the tube was less than 60 ° C. The flame contact surface of the elbow pipe after the test was spread by about 20 Omm, and was covered with the molten foam layer derived from the fire-resistant layer in the pouch portion of the fire-resistant coated tape.

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Abstract

Ce matériau réfractaire isolant thermique comprend un substrat présentant une partie creuse, et, remplissant la partie creuse, des granules d'un matériau se mettant thermiquement en mousse contenant un silicate alcalin hydrosoluble et une autre poudre inorganique. Ce matériau réfractaire isolant thermique peut constituer, en cas de feu, une couche en mousse inorganique présentant d'excellentes fonctions d'isolation contre le feu et la chaleur par la fusion et la mise en mousse des granulés. En outre, il se prête à un compactage uniforme, même dans des zones creuses étroites et longues en raison de sa forme granulaire. Enfin, il s'avère excellent quant à l'efficacité de production et la productivité de masse.
PCT/JP2003/014769 2003-11-19 2003-11-19 Materiau refractaire isolant thermique WO2005050082A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2002978C2 (nl) * 2009-06-05 2010-12-07 J W Kloppenburg B V Rookgasdoorvoersectie met voetstuk en koppelbanddrager.
EP2343471A1 (fr) * 2010-01-07 2011-07-13 Josef Entfellner Paroi ignifuge et son procédé de fabrication
EP2554885A3 (fr) * 2011-08-03 2017-09-06 HILTI Aktiengesellschaft Système passif de protection anti-incendie pour des conduites et procédé associé

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5293120A (en) * 1976-01-31 1977-08-05 Ig Gijutsu Kenkyusho Kk Plate for fireeproof construction
JPS52155765U (fr) * 1976-05-19 1977-11-26
JPS52146924A (en) * 1976-06-01 1977-12-07 Takashi Ishikawa Sandwich panel
JPS5319332A (en) * 1976-08-09 1978-02-22 Ishikawa Takashi Lighttweight* refractory panel and production thereof
JPS5817284A (ja) * 1981-07-24 1983-02-01 古河電気工業株式会社 難燃性可撓性合成樹脂管
JPS6170693U (fr) * 1984-10-15 1986-05-14
JPH0284322A (ja) * 1988-09-21 1990-03-26 Yunaito Board:Kk 建築材
JP2003253786A (ja) * 2002-02-28 2003-09-10 Osaka Yushi Kogyo Kk 耐火性パネル

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5293120A (en) * 1976-01-31 1977-08-05 Ig Gijutsu Kenkyusho Kk Plate for fireeproof construction
JPS52155765U (fr) * 1976-05-19 1977-11-26
JPS52146924A (en) * 1976-06-01 1977-12-07 Takashi Ishikawa Sandwich panel
JPS5319332A (en) * 1976-08-09 1978-02-22 Ishikawa Takashi Lighttweight* refractory panel and production thereof
JPS5817284A (ja) * 1981-07-24 1983-02-01 古河電気工業株式会社 難燃性可撓性合成樹脂管
JPS6170693U (fr) * 1984-10-15 1986-05-14
JPH0284322A (ja) * 1988-09-21 1990-03-26 Yunaito Board:Kk 建築材
JP2003253786A (ja) * 2002-02-28 2003-09-10 Osaka Yushi Kogyo Kk 耐火性パネル

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2002978C2 (nl) * 2009-06-05 2010-12-07 J W Kloppenburg B V Rookgasdoorvoersectie met voetstuk en koppelbanddrager.
WO2010140890A3 (fr) * 2009-06-05 2012-07-26 J.W. Kloppenburg B.V. Section de passage de gaz de combustion avec une base et un support de bande de raccordement
EP2343471A1 (fr) * 2010-01-07 2011-07-13 Josef Entfellner Paroi ignifuge et son procédé de fabrication
EP2554885A3 (fr) * 2011-08-03 2017-09-06 HILTI Aktiengesellschaft Système passif de protection anti-incendie pour des conduites et procédé associé

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