JPH09280480A - Fire resistant coating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exhibit remarkable heat insulation and heat absorption of a coating material used for wrapping around a pipeline by forming it in flexible baggy sheet comprising a three-layer laminated structure of an aluminum laminated glass fabric protecting material, a non-flammable material and a heat absorbing pack. SOLUTION: A heat resistant coating material used for repairing or protecting the outer surface coating of an already installed gas pipeline, comprises a three- layer structure in which the protecting layer of an aluminum laminate glass fabric 11, the heat insulating layer of a ceramic blanket 12 and the heat absorbing layer of heat absorbing packs 13 are arranged from an outer side to an inner side, and the ceramic blanket 12 coated on the heat absorbing packs 13 provided adjacently to a longitudinal direction and a width direction, is spread and integrated so as to be covered with the aluminum laminate glass fabric 11, and struck and fixed by an OPP adhesive tape 14. These heat absorbing packs 13 are so formed that nylon, aluminum foil and polyethylene are overlapped from an outer side to an inner side, and a heat absorbing material 24 comprising high absorptive polymer prepared from service water and an anticorrosive is surrounded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof coating material used by being wound around an existing gas pipeline when repairing or protecting the outer surface of the pipeline, and more particularly, to an aluminum cloth protective material and a nonflammable material. The present invention relates to a fireproof coating material for use in the above applications, which is composed of three layers of a material and an endothermic pack.

[0002]

2. Description of the Related Art A leak repairing method when a gas leak occurs due to a corrosion hole or a small crack in an existing pipe such as a gas pipe is carried out by introducing a required amount of sealing material into the pipe. There are known an inner surface repair method for repairing leakage from the inside and an outer surface repair method for repairing leakage from the outside of the pipe by exposing the buried pipe in which gas leaks from the earth and sand.

Conventionally, in the above-mentioned outer surface repair method, the pipe body around the leaked portion is often deteriorated, and usually, a method of partially cutting the existing pipe around the leaked portion and replacing it with a new pipe is used. Has been adopted.

However, according to such a partial pipe replacement method, since it is necessary to stop the supply of gas in the pipeline, it greatly inconveniences the customers around the construction. Further, there is a problem that time and cost are increased when the pipe replacement work is performed in a narrow place.

For the above reasons, instead of the above-mentioned partial pipe replacement method, as an outer surface repairing method for repairing by wrapping or bundling the coating material around the existing pipe at the location of gas leakage, for example, the following method is used. The method has been practiced for some time. A method in which a polyethylene sheet or the like is attached to the surface of a steel pipe so as to cover it with an adhesive, and the area around it is further wrapped with polyethylene tape or the like for repair. (JP-A-50-130
(Refer to Japanese Patent Publication No. 020). Apply a repair machine with packing attached to the leaking point of the pipe, tighten the repair machine to the pipe body to stop the leak,
After that, repair the peripheral of the repair machine so that it is fixed directly to the pipe. (See Japanese Patent Laid-Open No. 50-59818) A method in which a primer coating is applied, followed by dense coating with a pressure-sensitive adhesive sheet having excellent water resistance and electrical insulation, and then coating and covering with a corrosion-resistant plastic tape or the like. (Japanese Unexamined Patent Publication No. 51-120429) A flexible winding in which a layer of a resin-absorbent material and a stretchable plastic film are provided around a pipe at a leak point, and a vent hole means is airtightly attached to the layer. A method of wrapping the accessory, and then performing the required closing processing for the airtight hole to repair the leak. (Japanese Patent Application Laid-Open No. 52-14217) A packing is attached to a defective portion of a pipe, a mold is wound on the packing, a liquid reaction-curable resin is injected into the mold, and a sheet-like resin is formed on the resin. How to wrap a reinforcement. (Japanese Patent Application Laid-Open No. 1-210688) A flexible tube is wound around the outer periphery of a tubular body, and the outside of the tube is held by a fixture, and then a fluid is injected into the tube to inflate the tube. A method of bringing the tube into close contact with the outer circumference of the tubular body. (Japanese Patent Laid-Open No. 1-30759
No. 8) A method of preventing gas leakage by coating with a heat-shrinkable wrap sheet, heating and shrinking it to bring it into close contact with the tube surface. (Japanese Patent Publication No. 6-37956)

[0006]

However, in the conventional outer surface repairing method in which the coating material is wound, attached, adhered or fused around the existing pipe as described above, the pipe after the repair is repaired. In the case of a fire around the road, there was a problem that due to lack of resistance to heat of the covering repair material and the like, it was exposed to high heat and burned, resulting in a secondary disaster.

As a means for solving such a problem, use of a non-combustible fireproof coating material is considered, but as a known fireproof coating material, a building material made of a glass cloth material is generally used. In this case, a fireproof coating material processed into a sheet shape is attached and installed between heat insulating boards and the like. For example, in Japanese Unexamined Patent Publication No. 7-91593, a conduit is covered with a heat insulating layer obtained by hardening a mixed felt of glass fibers and ceramic fibers with an inorganic binder, and a protective layer of an aluminum foil is adhered and covered with an adhesive on the outer periphery thereof. A non-flammable coated conduit is disclosed. Further, in the case of being used as a refractory material other than buildings, surface treatment is generally required, and untreated ones lack practicality.

[0008] Such a fireproof coating material not only takes time and labor for coating an exposed gas pipe etc. according to the application but also has a heat retaining effect. Therefore, there is a problem that heat is stored on the inner surface of the refractory material and the gas pipe is adversely affected.

The present invention has been made in order to solve such a problem, and by the combination of a non-combustible material and a heat absorbing material, no surface treatment is required, heat is not stored, and heat insulation processing is applied to the above three-layer structure. It is intended to realize a fireproof coating material.

[0010]

[Means for Solving the Problems] The means for solving the problems, which has been invented in order to solve the above problems, will be described below in terms of its structure and operational effects.

The refractory coating material of the solution is a coating material which is used by being wrapped around a pipe line, wherein the coating material is
It is characterized in that it is formed into a flexible bag-like sheet having a three-layer laminated structure of an aluminum cloth protective material, an incombustible material and an endothermic pack, and the incombustible material is a ceramic blanket and is heat-insulated. The feature is that
The endothermic pack is made of a water-absorbing polymer material containing water,
It is characterized by having been subjected to heat storage prevention processing. More specifically, the fire-resistant coating material is a ceramic blanket on a sheet body in which the heat-absorbing pack is formed into a pouch in which a water-absorbent polymer material, water, and an antiseptic is sealed, and the pack is connected in the longitudinal direction and the width direction. It is characterized in that a flexible bag-like sheet is formed by laminating and stacking aluminum cloth protective material and attaching the protective material to an endothermic pack with an adhesive tape.

The aluminum cloth protective material of the present invention plays a role as a protective layer, but it is preferable that the aluminum cloth protective material be in close contact with the duct and easily wound, and be durable, for example, 2 μm to 2 mm.
Aluminum foil with a certain thickness can be used.

The non-combustible material as a heat insulating functional material capable of withstanding high heat according to the present invention uses a ceramic blanket containing silicon oxide or aluminum oxide in the present invention, but is not limited to this. Generally, as high temperature refractory materials having high hardness, corrosion resistance and mechanical strength even at high temperatures, sintered alumina, electrolytic alumina, zirconia, synthetic mullite, silicon carbide, spinel clinker, seawater magnesia clinker, silica-alumina-based materials, etc. are known. ing.

For example, as a porous molding material, an alumina-based silica binder is soft and highly hygroscopic, and diatomaceous earth binder, diatomaceous asbestos, calcium silicate-asbestos, silica expanded particle binder, silica foam. , Silica melt molding material can be used, and as the free filling material of powdery or short fiber,
Aluminum silicate fibers, aluminum silicate particles, asbestos fibers, calcium silicate particles (hygroscopic), diatomaceous earth, calcined diatomaceous earth, quartz fibers, silica fibers, silica airgel,
Zirconia felt, fused silica, vermiculite, and the like can be used, and mixed felt of glass fiber and ceramic fiber can also be used. Further, the thickness of the heat insulating layer is preferably 2 mm to 50 mm, but it can be set to a value exceeding this value.

As the endothermic pack of the present invention, 0.5%
A water-absorbent polymer material (weight ratio) containing 99.4% tap water and 0.1% preservative is used. The water-absorbent polymer material, water, and an antiseptic agent are hermetically sealed, and the pack formed into a pouch body is connected to the longitudinal direction and the width direction to form a sheet body, but the present invention is not limited thereto. Not a thing.
Any water-absorbing polymer may be used as long as it absorbs and swells in a short time when it comes into contact with water and gels the whole water.

For example, starch-acrylonitrile system,
Polyacrylic acid type, starch-acrylic acid type, cross-linked Poval type, methyl methacrylate-vinyl acetate copolymer type and the like are known. The preservative may be one usually used. For example, organic mercury compounds, organic sulfur compounds, phenol compounds and the like are known. The compounding ratio of these water-absorbing polymer, water and preservative can be appropriately adjusted depending on the purpose of use.

The fire-resistant coating material of the present invention is used as a heat-absorbing pack in which a water-absorbent polymer material, water, and a pack formed in a small bag sealed with a preservative are connected to the sheet body in the longitudinal direction and the width direction to form a ceramic blanket. And a layer of aluminum cloth protective material is laminated and attached, and the protective material is attached to an endothermic pack with an adhesive tape to form a flexible bag-like sheet.

The fire-resistant coating material of the present invention is wrapped around a gas pipe in a sushi roll-like shape and is then packaged and fastened with a stainless steel locking band to stop the material, but the invention is not limited thereto. The method of winding around the gas pipe and the selection of the locking member can be appropriately adjusted according to the purpose, but those weak or unstable when exposed to high heat such as fire are not preferable. The fireproof coating material of the present invention is a fireproof test JIS A 1304 for building structures and a cable vertical tray combustion test IEEE defined by the Institute of Electrical and Electronics Engineers of the United States.
E std. -383 has been passed.

With the fireproof coating material of such a solving means, the gas pipe is protected even in the case of a fire or the like, and it is exposed to a high temperature of several hours, so that a secondary disaster such as ignition of gas is prevented. be able to. In addition to the deteriorated and corroded steel pipe (including the joint portion), for example, the polyethylene pipe can be protected by being wound around the polyethylene pipe and externally wrapped. Further, it can be protected by being wound around pipelines, optical cables, and other pipes other than gas pipes in the common premises, such as electric wire cables, optical fiber communication cables, television cables, water pipes, etc. Protective material,
It can be widely applied as a building material / repair material for indoor / outdoor use, oil / natural gas related facility material / repair material, etc.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION With respect to the fire-resistant coating material of the present invention achieved by the above-described means for solving, a mode for carrying out this will be described.

In the embodiment of the present invention, in order to implement the solution means, in the fireproof coating material used by being wound to repair the outer surface coating of the gas pipe and protect the polyethylene pipe, the following respective elements are used. Is equipped with. The refractory material has a heat insulating property, but can be embodied in the form of a ceramic blanket, or can be specifically filled in the form of an endothermic pack to prevent heat accumulation.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of preferred embodiments of the fire resistant coating material of the present invention will be described with reference to the drawings.

FIG. 1 shows a cross-sectional view of the fireproof coating material of the present invention. From the outer side to the inner side, the protective layer of the aluminum cloth 11, the heat insulating layer of the ceramic blanket 12, and the heat absorbing pack 1
The three-layer structure of three endothermic layers, the ceramic blanket 12 shown on each endothermic pack 13 connected in the length direction and the width direction is spread and integrated so as to be covered with the aluminum cloth 11, and is made of polypropylene. Stick and fix with OPP adhesive tape 14.

FIG. 2 is a sectional view of the endothermic pack 13,
Nylon 15 with a thickness of 15 μm, thickness 9 from outside to inside
The aluminum foil 16 having a thickness of 60 μm and the polyethylene 17 having a thickness of 60 μm are stacked on each other, and the heat absorbing material 18 is wrapped therein. The heat absorbing material 18 is a super absorbent polymer having a weight ratio of 0.5%,
99.4% tap water absorbed by this polymer, and
Consists of 0.1% preservative. The periphery of the heat absorbing material is heat-sealed (heat-resistant pressure-bonding process) and sealed to form a pack.

FIG. 3 (a) shows the back surface of the schematic view of the fire-resistant coating material sheet of the present invention. The endothermic pack 31 connected in the longitudinal direction and the width direction is composed of a ceramic blanket (not shown in the figure) and an aluminum. It is shown that the cloth 33 is covered with a cloth 33, and both are fastened with the polypropylene-based OPP adhesive tape 32. The figure (b) shows the surface of the schematic diagram, and the endothermic pack and the ceramic blanket (not shown in the figure). ), The aluminum cloth 33 and the label 34 are shown.

FIG. 4 is a graph showing the results of the reviving method fire protection measures and fire resistance tests (provided that JIS A 1304 is used.
Experiments were conducted under more severe conditions than the standard heating curve of. ). In the figure, a indicates the temperature inside the heating furnace (JIS A 1304), b indicates the surface temperature of the refractory material, and c indicates the surface temperature of the revive, although the surface temperature of the refractory material reaches 770 ° C after 30 minutes of open flame. The revived surface temperature of the present application is 325 ° C., which is lower than the melting temperature of lead 327 ° C. This indicates that it will prevent melting of the plumbing in case of a fire.

5 (a) and 5 (b) are views in which the gas pipe is repaired by coating it with the refractory coating material of the present invention {(a) is a side view,
(B) is a cross-sectional view}, but after the conventional well-known Revive method, the external screw seal method, etc. have been applied to the corroded holes and the deteriorated portion of the gas pipe 51, the fire-resistant coating material 52 of the present application is wound and made of stainless steel. Stop with the locking belt 53.

[0028]

As is apparent from the above description, in the fireproof coating material having the above three-layer laminate structure of the means for solving the present invention, a non-combustible material and an endothermic pack are combined and wound on a gas pipe or the like. As a fireproof coating material for leak repair, it has a remarkable heat insulating function and heat absorbing function.

Further, in the fireproof coating material of the present invention, due to this heat insulating action and heat absorbing action, it is possible to apply a method of repairing the outer surface of a deteriorated exposed gas pipe or the like, and also easily protect the exposed polyethylene pipe or the like. There is an advantageous effect that it can be handled.

[Brief description of drawings]

FIG. 1 shows a cross-sectional structure of a refractory coating material.

FIG. 2 shows a sectional structure of an endothermic pack.

FIG. 3 (a) shows a back surface structure of the sheet schematic diagram, and FIG. 3 (b) shows a surface structure of the sheet schematic diagram.

[Fig. 4] shows the results of fire protection measures and fire resistance tests of the Revive method.

FIG. 5 (a) is a side view of a view in which a gas pipe is wound with the fireproof coating material of the present invention for repair, and FIG. 5 (b) is a cross-sectional view thereof.

[Explanation of symbols]

 11: Aluminum cloth protective layer 12: Ceramic blanket 13: Endothermic pack 14: OPP adhesive tape 21: Nylon 22: Aluminum foil 23: Polyethylene 24: Endothermic material 25: Heat seal 31: Endothermic pack 32: OPP adhesive tape 33: Aluminum cloth 34: Label 51: Gas pipe 52: Fireproof coating material 53: Stainless belt

[Procedure amendment]

[Submission date] July 30, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

[Figure 5] ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] September 20, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Title of the invention Fireproof coating material

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof coating material which is used by being wound around an existing gas pipeline when repairing or protecting the outer surface of the pipeline, and more particularly, to an aluminum laminated glass cloth protective material. , A non-combustible material, and an endothermic pack, and a fire-resistant coating material used for the above-mentioned applications.

[0002]

2. Description of the Related Art A leak repairing method when a gas leak occurs due to a corrosion hole or a small crack in an existing pipe such as a gas pipe is carried out by introducing a required amount of sealing material into the pipe. There are known an inner surface repair method for repairing leakage from the inside and an outer surface repair method for repairing leakage from the outside of the pipe by exposing the buried pipe in which gas leaks from the earth and sand.

Conventionally, in the above-mentioned outer surface repair method, the pipe body around the leaked portion is often deteriorated, and usually, a method of partially cutting the existing pipe around the leaked portion and replacing it with a new pipe is used. Has been adopted.

However, according to such a partial pipe replacement method, since it is necessary to stop the supply of gas in the pipeline, it greatly inconveniences the customers around the construction. In addition, there is a problem in that it takes time and money to carry out the pipe replacement work in a small space.

For the above reasons, instead of the above-mentioned partial pipe replacement method, as an outer surface repairing method for repairing by wrapping or bundling the coating material around the existing pipe at the location of gas leakage, for example, the following method is used. The method has been practiced for some time. A method in which a polyethylene sheet or the like is attached to the surface of a steel pipe so as to cover it with an adhesive, and the area around it is further wrapped with polyethylene tape or the like for repair. (JP-A-50-130
(Refer to Japanese Patent Publication No. 020). Apply a repair machine with packing attached to the leaking point of the pipe, tighten the repair machine to the pipe body to stop the leak,
After that, repair the peripheral of the repair machine so that it is fixed directly to the pipe. (See Japanese Patent Laid-Open No. 50-59818) A method in which a primer coating is applied, followed by dense coating with a pressure-sensitive adhesive sheet having excellent water resistance and electrical insulation, and then coating and covering with a corrosion-resistant plastic tape or the like. (Japanese Unexamined Patent Publication No. 51-120429) A flexible winding in which a layer of a resin-absorbent material and a stretchable plastic film are provided around a pipe at a leak point, and a vent hole means is airtightly attached to the layer. A method of wrapping the accessory, and then performing the required closing processing for the airtight hole to repair the leak. (Japanese Patent Application Laid-Open No. 52-14217) A packing is attached to a defective portion of a pipe, a mold is wound on the packing, a liquid reaction-curable resin is injected into the mold, and a sheet-like resin is formed on the resin. How to wrap a reinforcement. (Japanese Patent Application Laid-Open No. 1-210688) A flexible tube is wound around the outer periphery of a tubular body, and the outside of the tube is held by a fixture, and then a fluid is injected into the tube to inflate the tube. A method of bringing the tube into close contact with the outer circumference of the tubular body. (Japanese Patent Laid-Open No. 1-30759
No. 8) A method of preventing gas leakage by coating with a heat-shrinkable wrap sheet, heating and shrinking it to bring it into close contact with the tube surface. (Japanese Patent Publication No. 6-37956)

[0006]

However, in the conventional outer surface repairing method in which the coating material is wound, attached, adhered or fused around the existing pipe as described above, the pipe after the repair is repaired. In the case of a fire around the road, there was a problem that due to lack of resistance to heat of the covering repair material and the like, it was exposed to high heat and burned, resulting in a secondary disaster.

As a means for solving such a problem, use of a nonflammable shochu-flaming coating material can be considered, but as a known fireproof coating material, a building material made of a glass cloth material is generally used. This is a type in which a fireproof coating material processed into a sheet shape is attached and installed between heat insulating boards and the like. For example, in Japanese Unexamined Patent Publication No. 7-91593, a conduit is covered with a heat insulating layer obtained by hardening a mixed felt of glass fibers and ceramic fibers with an inorganic binder, and a protective layer of an aluminum foil is adhered and covered with an adhesive on the outer periphery thereof. A non-flammable coated conduit is disclosed. Further, in the case of being used as a refractory material other than buildings, surface treatment is generally required, and untreated ones lack practicality.

[0008] Such a fireproof coating material not only takes time and labor for coating an exposed gas pipe etc. according to the application but also has a heat retaining effect. Therefore, there is a problem that heat is stored on the inner surface of the refractory material and the gas pipe is adversely affected.

The present invention has been made in order to solve such a problem, and by the combination of a non-combustible material and a heat absorbing material, no surface treatment is required, heat is not stored, and heat insulation processing is applied to the above three-layer structure. It is intended to realize a fireproof coating material.

[0010]

[Means for Solving the Problems] The means for solving the problems, which has been invented in order to solve the above problems, will be described below in terms of its structure and operational effects.

The refractory coating material of the solution is a coating material which is used by being wrapped around a pipe line, wherein the coating material is
It is characterized in that it is formed into a flexible bag-like sheet having a three-layer laminated structure of an aluminum laminated glass cloth protective material, an incombustible material and an endothermic pack, and the incombustible material is made of a ceramic blanket and is heat-insulated. In addition, the heat absorption pack is made of a water-absorbent polymer material containing water, and is subjected to heat storage prevention treatment. More specifically, the fire-resistant coating material is a ceramic blanket on a sheet body in which the heat-absorbing pack is formed into a pouch in which a water-absorbent polymer material, water, and an antiseptic is sealed, and the pack is connected in the longitudinal direction and the width direction. It is characterized in that it is formed by laminating and laminating an aluminum laminated glass cloth protective material and attaching the protective material to an endothermic pack with an adhesive tape to form a flexible bag-like sheet.

The aluminum-laminated glass cloth protective material of the present invention plays a role as a protective layer, but it is preferable that the aluminum laminated glass cloth protective material is a member which is easily adhered to the pipeline and is easily wound, and which is strong.
Aluminum foil or the like having a thickness of about 2 μm to 2 mm can be used.

The non-combustible material as a heat insulating functional material capable of withstanding high heat according to the present invention uses a ceramic blanket containing silicon oxide or aluminum oxide in the present invention, but is not limited to this. Generally, as high-temperature refractory materials having high hardness, corrosion resistance and mechanical strength even at high temperatures, sintered alumina, electrolytic alumina, zirconia, synthetic mullite, silicon carbide, spinel clinker, seawater magnesia clinker, silica-alumina materials, etc. are known. ing.

For example, as a porous molding material, an alumina-based silica binder is soft and highly hygroscopic, and diatomaceous earth binder, diatomaceous asbestos, calcium silicate-asbestos, silica expanded particle binder, silica foam. , Silica melt molding material can be used, and as the free filling material of powdery or short fiber,
Aluminum silicate fibers, aluminum silicate particles, asbestos fibers, calcium silicate particles (hygroscopic), diatomaceous earth, calcined diatomaceous earth, quartz fibers, silica fibers, silica airgel,
Zirconia felt, fused silica, vermiculite, and the like can be used, and mixed felt of glass fiber and ceramic fiber can also be used. Further, the thickness of the heat insulating layer is preferably 2 mm to 50 mm, but it can be set to a value exceeding this value.

As the endothermic pack of the present invention, 0.5%
A water-absorbent polymer material (weight ratio) containing 99.4% tap water and 0.1% preservative is used. The water-absorbent polymer material, water, and an antiseptic agent are hermetically sealed, and the pack formed into a pouch body is connected to the longitudinal direction and the width direction to form a sheet body, but the present invention is not limited thereto. Not a thing.
Any water-absorbing polymer may be used as long as it absorbs and swells in a short time when it comes into contact with water and gels the whole water.

For example, starch-acrylonitrile system,
Polyacrylic acid type, starch-acrylic acid type, cross-linked Poval type, methyl methacrylate-vinyl acetate copolymer type and the like are known. The preservative may be one usually used. For example, organic mercury compounds, organic sulfur compounds, phenol compounds and the like are known. The compounding ratio of these water-absorbing polymer, water and preservative can be appropriately adjusted depending on the purpose of use.

The fire-resistant coating material of the present invention is used as a heat-absorbing pack in which a water-absorbent polymer material, water, and a pack formed in a small bag sealed with a preservative are connected to the sheet body in the longitudinal direction and the width direction to form a ceramic blanket. The aluminum laminated glass cloth protective material is laminated and attached, and the protective material is attached to an endothermic pack with an adhesive tape to form a flexible bag-like sheet.

The fire-resistant coating material of the present invention is wrapped around a gas pipe in a sushi roll-like shape and is then packaged and fastened with a stainless steel locking band to stop the material, but the invention is not limited thereto. The method of winding around the gas pipe and the selection of the locking member can be appropriately adjusted according to the purpose, but those weak or unstable when exposed to high heat such as fire are not preferable. The fireproof coating material of the present invention is a fireproof test JIS A 1304 for building structures and a cable vertical tray combustion test IEEE defined by the Institute of Electrical and Electronics Engineers of the United States.
E std. -383 has been passed.

With the fireproof coating material of such a solving means, the gas pipe is protected even in the case of a fire or the like, and it is exposed to a high temperature of several hours, so that a secondary disaster such as ignition of gas is prevented. be able to. In addition to the deteriorated and corroded steel pipe (including the joint portion), for example, the polyethylene pipe can be protected by being wound around the polyethylene pipe and externally wrapped. Further, it can be protected by being wrapped around pipelines, optical cables, and other pipes other than gas pipes in the joint premises, such as electric wire cables, optical fiber communication cables, television cables, water pipes, etc. Machine protective material,
It can be widely applied as a building material / repair material for indoor / outdoor use, oil / natural gas related facility material / repair material, etc.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION With respect to the fire-resistant coating material of the present invention achieved by the above-described means for solving, a mode for carrying out this will be described.

In the embodiment of the present invention, in order to implement the solution means, in the fireproof coating material used by being wound to repair the outer surface coating of the gas pipe and protect the polyethylene pipe, the following respective elements are used. Is equipped with. The refractory material has a heat insulating property, but can be embodied in the form of a ceramic blanket, or can be specifically filled in the form of an endothermic pack to prevent heat accumulation.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of preferred embodiments of the fire resistant coating material of the present invention will be described with reference to the drawings.

FIG. 1 shows a cross-sectional view of the fire-resistant coating material of the present invention.
1. The ceramic blanket 12 is made of a three-layer structure including a protective layer 1 for the ceramic blanket 12, a heat insulating layer for the ceramic blanket 12, and an endothermic layer for the endothermic pack 13. The glass cloth 11 is spread and covered so as to be integrated, and the polypropylene OPP adhesive tape 14 is stuck and fixed.

FIG. 2 is a sectional view of the endothermic pack 13,
From outside to inside, nylon 21 with a thickness of 15 μm, thickness 9
An aluminum foil 22 having a thickness of μm and a polyethylene 23 having a thickness of 60 μm are stacked on each other, and a heat absorbing material 24 is wrapped therein. The heat absorbing material 24 is a super absorbent polymer having a weight ratio of 0.5%,
99.4% tap water absorbed by this polymer, and
Consists of 0.1% preservative. The periphery of the heat absorbing material is heat-sealed (heat-resistant pressure-bonding process) and sealed to form a pack.

FIG. 3 (a) shows the back surface of the schematic view of the fire-resistant coating material sheet of the present invention. The endothermic pack 13 connected in the longitudinal direction and the width direction is composed of a ceramic blanket (not shown in the figure) and an aluminum. It is shown that the laminated glass cloth 11 is covered and both are fastened by the polypropylene-based OPP adhesive tape 32. The figure (b) shows the surface of the schematic diagram, and the endothermic pack and the ceramic blanket (in this figure, The aluminum laminated glass cloth 11 which covers (not shown) and the label 34 are shown.

FIG. 4 is a graph showing the results of the reviving method fire protection measures and fire resistance tests (provided that JIS A 1304 is used.
Experiments were conducted under more severe conditions than the standard heating curve of. ). In the figure, a indicates the temperature inside the heating furnace (JIS A 1304), b indicates the surface temperature of the refractory material, and c indicates the surface temperature of the revive, although the surface temperature of the refractory material reaches 770 ° C after 30 minutes of open flame. The revived surface temperature of the present application is 325 ° C., which is lower than the melting temperature of lead 327 ° C. This indicates that it will prevent melting of the plumbing in case of a fire.

5 (a) and 5 (b) are views in which a gas pipe is repaired by coating it with the ignition coating material of the present invention {(a) is a side view,
(B) is a cross-sectional view}, but after the conventional well-known Revive method, the external screw seal method, etc. have been applied to the corroded holes and the deteriorated portion of the gas pipe 51, the fire-resistant coating material 52 of the present application is wound and made of stainless steel. Stop with the locking belt 53.

[0028]

As is apparent from the above description, in the fireproof coating material having the above three-layer laminate structure of the means for solving the present invention, a non-combustible material and an endothermic pack are combined and wound on a gas pipe or the like. As a fireproof coating material for leak repair, it has a remarkable heat insulating function and heat absorbing function.

Further, in the fireproof coating material of the present invention, due to this heat insulating action and heat absorbing action, it is possible to apply a method of repairing the outer surface of a deteriorated exposed gas pipe or the like, and also easily protect the exposed polyethylene pipe or the like. There is an advantageous effect that it can be handled.

[Brief description of drawings]

FIG. 1 is an explanatory view of a cross-sectional structure of a fireproof coating material.

FIG. 2 is an explanatory view of a sectional structure of an endothermic pack.

FIG. 3A is a back surface structure diagram of a sheet. FIG. 3B is a surface structure diagram of the sheet.

[Figure 4] Revive method fire protection measures, fire resistance test result diagram

5A is a side view of the operation of the present invention. FIG. 5B is a sectional view of the operation of the present invention.

[Explanation of reference numerals] 11: Aluminum laminated glass cloth protective layer 12: Ceramic blanket 13: Endothermic pack 14: OPP adhesive tape 21: Nylon 22: Aluminum foil 23: Polyethylene 24: Endothermic material 25: Heat seal 32: OPP adhesive tape 34 : Label 51: Gas pipe 52: Fireproof coating material 53: Stainless belt

[Procedure 3]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

[Fig. 2]

[Figure 3]

FIG. 4

[Figure 5]

Front page continuation (72) Inventor Tadashi Naruse 2-6 Mitsuzawa Nishimachi, Kanagawa-ku, Yokohama, Kanagawa Prefecture 5-404 Furukawa Electric Co., Ltd. House (404) Inventor Junichiro Wake 1-3, Mitsuzawa Nishimachi, Kanagawa-ku, Yokohama, Kanagawa Prefecture 3-24

Claims (4)

[Claims] 1. A flexible bag body used as a coating material wound around a pipe line, wherein the coating material has a three-layer laminated structure of an aluminum cloth protective material, an incombustible material and an endothermic pack. A fireproof coating material formed into a sheet-like shape. 2. The fire resistant coating material according to claim 1, wherein the non-combustible material is a ceramic blanket and is heat-insulated. 3. The fire-resistant coating material according to claim 1, wherein the heat-absorbing pack is made of a water-absorbing polymer material containing water and is subjected to heat storage prevention treatment. 4. A ceramic blanket is attached to a sheet body in which a heat-absorbing pack is formed of a small bag body in which a water-absorbent polymer material, water, and an antiseptic agent are sealed, is connected in the longitudinal direction and the width direction, and an aluminum cloth is used. Protective material is layered and attached,
The fireproof coating material according to claim 1, wherein the protective material is formed into a flexible bag-like sheet by attaching the protective material to an endothermic pack with an adhesive tape.