KR101837302B1 - Fire stop sealing tape and preparing method thereof - Google Patents

Abstract

The present invention relates to a fireproofing sealant tape and manufacturing method thereof. More specifically, the method includes: a step of preparing a first mixture by mixing expanded graphite and flame retardant materials; a step of preparing a second mixture by mixing thermoplastic resin and binder glue; a step of preparing a third mixture by mixing one, selected among a carbon fiber chop, a glass fiber chop, or a wire chop, with the binder glue which has been dispersed in water in which phosphoric acid or phosphate dissolves; and a step of forming a fireproofing sealant tape by mixing and extruding the first, second, and third mixtures. According to the present invention, the fireproofing sealant tape is capable of sealing a space by expanding in a part, which is penetrated by piping and electrical facilities connecting walls, ceilings, and floors of a building, thereby efficiently blocking flames or toxic gas. Moreover, since ash can lead to a secondary fire, the sealant tape makes the ash stay in the same place even after expansion from the fire, thereby being applied to seal a part penetrated by a cable, pipe, or duct and cracks in various buildings.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fireproof sealant tape,

The present invention relates to a sealant tape for fireproofing and a method of manufacturing the same.

Fire, smoke and gas in enclosed spaces such as high-rise buildings can pose a significant risk to life. When a fire occurs in the space between the floor of the structure and the ceiling, the fire and the resulting smoke and gas tend to spread frequently to other open spaces in the building, especially to open spaces higher than the point of fire occurrence.

Fire retardant sealant tapes using expanded graphite capable of forming a carbonized film during a fire have been proposed as measures to reduce secondary damage in the event of a fire. However, when the relative humidity is 85% or more, It is difficult to exert a normal function at a low temperature or below, and also there is a problem that the sealant tape of the fire sealant tends to be inflated when a fire occurs, thereby deteriorating the penetration barrier property of flame or toxic gas.

Therefore, it is urgent to research and develop fire-retardant sealant tape that can reduce the damage from the fire through the opening when a fire occurs inside the building, and minimize the damage to people.

Japanese Patent Application Laid-Open No. 2008-115359

It is an object of the present invention to provide an arsonized product that shields flames, toxic gases, and the like from being diffused from a fire through an opening between a wall and a wall of a building.

In order to attain the above object, the present invention provides a thermoplastic resin composition comprising 40 to 50 parts by weight of expanded graphite, 10 to 15 parts by weight of a flame retardant, 10 to 20 parts by weight of a thermoplastic resin, a carbon fiber chop, 10 to 25 parts by weight of a glass fiber chop or wire chop, 10 to 25 parts by weight of a binder adhesive, and 5 to 10 parts by weight of a phosphoric acid or a phosphate.

The present invention also relates to a method for producing a flame retardant, comprising: preparing a first mixture by mixing expandable graphite and a flame retardant; Preparing a second mixture by mixing a thermoplastic resin and a binder adhesive; Preparing a third mixture by dispersing a binder adhesive in water in which any one of phosphoric acid and phosphate is dissolved, and then mixing any one selected from a carbon fiber, a glass fiber chop and a wire; And mixing the prepared first mixture, second mixture, and third mixture, and extruding the blended mixture to shape a fire sealant tape.

The present invention also relates to a method for producing a flame retardant, comprising: preparing a first mixture by mixing expandable graphite and a flame retardant; Preparing a second mixture by mixing a thermoplastic resin and a binder adhesive; Preparing a third mixture by dispersing a binder adhesive in water in which any one of phosphoric acid and phosphate is dissolved, and then mixing any one selected from a carbon fiber, a glass fiber chop and a wire; And blending the prepared first mixture, second mixture, and third mixture, followed by shaping into Laura.

The present invention also provides a sealant tape for fire protection, which is produced according to the above-mentioned production method.

The sealant tape for fireproofing according to the present invention can be used to seal a space when a fire occurs, in a part where a piping facility and an electric equipment penetrate the walls, walls, ceiling, ceiling, floor and wall of a building, Can be efficiently blocked. In addition, since fire is dangerous if the ash is blown while fire is generated in case of fire, ashes can stay in place after fire from fire after ignition, and it can be applied to sealing of penetrating parts of cables, pipes, ducts and gaps in various buildings .

1 is a cross-sectional view of a PVC pipe, a steel pipe, a duct, or a cable tray wrapped with a fireproof sealant tape through a concrete wall or a concrete floor.

Hereinafter, the present invention will be described in more detail.

The inventors of the present invention have found that a fireproof sealant tape produced by adding any one selected from carbon fiber, glass fiber, or wire wire to a piping facility and an electric facility for connecting walls, walls, ceilings, ceilings, It is possible to improve the flame or toxic gas barrier property in the event of a fire, thereby completing the present invention.

The present invention relates to a thermoplastic resin composition comprising 40 to 50 parts by weight of expanded graphite, 10 to 15 parts by weight of a flame retardant, 10 to 20 parts by weight of a thermoplastic resin, a carbon fiber chop, a glass fiber chop, Or 10 to 25 parts by weight of a wire chop, 10 to 25 parts by weight of a binder adhesive, and 5 to 10 parts by weight of a phosphoric acid or a phosphoric acid salt.

The expanded graphite may have a size of 50 mesh to 250 mesh, but is not limited thereto.

If the expanded graphite has a size of less than 50 mesh, it may cause a problem of reduction in expansion. Further, if the expanded graphite has a size exceeding 250 mesh, it may cause problems such as expansion after expansion. The expanded graphite preferably has a size of 50 mesh to 250 mesh, and more preferably, the expanded graphite has a size of 80 mesh to 150 mesh, considering flame contact.

The flame retardant may be any one selected from the group consisting of aluminum hydroxide, magnesium hydroxide, and phosphorus flame retardant, but is not limited thereto.

The phosphorus flame retardant is selected from the group consisting of tris-2-chloroethyl phosphate, tris-2-chloropropyl phosphate, isopropylphenyl diphenyl phosphate, tricresyl phosphate, triphenyl phosphate, triethyl phosphate, melamine phosphate and ammonium phosphate But the present invention is not limited thereto.

The thermoplastic resin may be either a powder type or a granule type, but is not limited thereto.

The thermoplastic resin is a hot-melt resin, and includes properties of being melted to become an adhesive.

The thermoplastic resin may be selected from the group consisting of polyethylene (PE), ethylene-vinyl acetate (EVA), polypropylene (PP), polyamide (PA) , And polyester (polyester), but the present invention is not limited thereto.

The carbon fiber, glass fiber or wire can be selected from the group consisting of polypropylene, polybutylene-terephthalate, polyamide, gypsum and nylon. But is not limited thereto.

The carbon fiber, glass fiber or wire can have an average length of 1 to 15 mm, but is not limited thereto.

If the average length of the carbon fibers, glass fibers or wire rods is less than 1 mm, the carbon fibers, glass fibers or wire rods may have an average length exceeding 15 mm It is preferable that the carbon fiber wire or the wire wire has an average length of 1 to 15 mm. When the sealing property of the sealant tape for fireproofing is taken into account, It is more preferable that the carbon fiber wire or the wire wire has an average length of 7 to 12 mm.

The carbon fiber, glass fiber or wire can have an average thickness of 5 to 30 mu m, but is not limited thereto.

If the carbon fiber glass, glass fiber glass or wire glass has an average thickness of less than 5 탆, there may be a problem of burning due to high temperature, and the carbon fiber glass, glass fiber glass or wire glass may have an average It is preferable that the carbon fiber glass, the glass fiber glass or the wire glass have an average thickness of 5 to 30 탆. In particular, the glass fiber glass or the wire glass preferably has a productivity and an air tightness It is more preferable that the carbon fiber glass, glass fiber glass or wire glass have an average thickness of 10 to 25 탆.

The binder adhesive may be any one selected from the group consisting of an acrylic adhesive, an epoxy adhesive, a styrene-butadiene-based latex binder, and a urethane binder, but is not limited thereto.

The phosphate is selected from the group consisting of Tricresyl phosphate, Trimethyl phosphate, Triethyl phosphate, Triphenyl phosphate, and Trixylenyl phosphate. But the present invention is not limited thereto.

The present invention also relates to a method for producing a flame retardant, comprising: preparing a first mixture by mixing expandable graphite and a flame retardant; Preparing a second mixture by mixing a thermoplastic resin and a binder adhesive; Preparing a third mixture by dispersing a binder adhesive in water in which any one of phosphoric acid and phosphate is dissolved, and then mixing any one selected from a carbon fiber, a glass fiber chop and a wire; And mixing the prepared first mixture, second mixture, and third mixture, and extruding the blended mixture to shape a fire sealant tape.

The step of preparing the first mixture may include mixing the expanded graphite and the flame retardant at a weight ratio of 10: 3, but is not limited thereto.

When the expanded graphite and the flame retardant are mixed at a weight ratio of less than 10: 3, the space between the graphite and the graphite is large, and if the binder is large, the airtightness may be deteriorated. It is preferable to mix the expanded graphite and the flame retardant in a weight ratio of 10: 3 when flame spreading is considered in a fire.

The step of preparing the second mixture may be performed by mixing the thermoplastic resin and the binder adhesive in a weight ratio of 1: (2 to 2.5), but is not limited thereto.

When the thermoplastic resin and the binder adhesive are mixed at a weight ratio of less than 1: 2, the adhesiveness may be deteriorated. When the thermoplastic resin and the binder adhesive are mixed at a weight ratio of more than 1: 2.5, It is preferable to mix the thermoplastic resin and the binder adhesive at a weight ratio of 1: 2 (2 to 2.5), and more preferably, the thermoplastic resin and the binder adhesive at a ratio of 1: 2.

The expanded graphite may have a size of 50 mesh to 250 mesh, but is not limited thereto.

If the expanded graphite has a size of less than 50 mesh, it may cause a problem of reduction in expansion. Further, if the expanded graphite has a size exceeding 250 mesh, it may cause problems such as expansion after expansion. The expanded graphite preferably has a size of 50 mesh to 250 mesh, and more preferably, the expanded graphite has a size of 80 mesh to 150 mesh, considering flame contact.

The flame retardant may be any one selected from the group consisting of aluminum hydroxide, magnesium hydroxide, and phosphorus flame retardant, but is not limited thereto.

The phosphorus flame retardant is selected from the group consisting of tris-2-chloroethyl phosphate, tris-2-chloropropyl phosphate, isopropylphenyl diphenyl phosphate, tricresyl phosphate, triphenyl phosphate, triethyl phosphate, melamine phosphate and ammonium phosphate But the present invention is not limited thereto.

The thermoplastic resin is a hot-melt resin, and includes properties of being melted to become an adhesive.

The thermoplastic resin may be either a powder type or a granule type, but is not limited thereto.

The thermoplastic resin may be any one selected from the group consisting of polyethylene, ethylene-vinyl acetate, polypropylene, polyamide, and polyester. It is not.

The carbon fiber, glass fiber or wire can be any one selected from the group consisting of polypropylene, polybutylene-terephthalate, polyamide, and nylon, But is not limited thereto.

The carbon fiber, glass fiber or wire can have an average length of 1 to 15 mm, but is not limited thereto.

If the average length of the carbon fibers, glass fibers or wire rods is less than 1 mm, the carbon fibers, glass fibers or wire rods may have an average length exceeding 15 mm It is preferable that the carbon fiber glass, glass fiber glass or wire glass have an average length of 1 to 15 mm. In particular, considering the airtightness of the sealant tape for fireproofing, It is more preferable that the carbon fiber glass, glass fiber glass or wire glass has an average length of 7 to 12 mm.

The carbon fiber, glass fiber or wire can have an average thickness of 5 to 30 mu m, but is not limited thereto.

If the carbon fiber glass, glass fiber glass or wire glass has an average thickness of less than 5 탆, there may be a problem of burning due to high temperature, and the carbon fiber glass, glass fiber glass or wire glass may have an average It is preferable that the carbon fiber glass, the glass fiber glass or the wire glass have an average thickness of 5 to 30 탆. In particular, the glass fiber glass or the wire glass preferably has a productivity and an air tightness It is more preferable that the carbon fiber glass, glass fiber glass or wire glass have an average thickness of 10 to 25 탆.

The binder adhesive may be any one selected from the group consisting of an acrylic adhesive, an epoxy adhesive, a styrene-butadiene-based latex binder, and a urethane binder, but is not limited thereto.

The phosphate is selected from the group consisting of Tricresyl phosphate, Trimethyl phosphate, Triethyl phosphate, Triphenyl phosphate, and Trixylenyl phosphate. But the present invention is not limited thereto.

The temperature of the water in which the phosphoric acid or the phosphate is dissolved may be 40 to 50 ° C.

When the temperature of the water is in the range of 40 ° C to 50 ° C, when either of the phosphoric acid or the phosphate is dissolved in water, it can exhibit excellent solubility and increase the adhesive strength.

The step of shaping the fire sealant tape may be performed by mixing the prepared first mixture, the second mixture, and the third mixture, and then extruding at 70 to 80 ° C, but is not limited thereto.

When the fire retardant sealant tape is molded, the dispersion may be deteriorated when extruded at a temperature of less than 70 ° C. When extruding the fire retardant sealant tape at a temperature exceeding 80 ° C, the adhesiveness may be lowered. The step of shaping the fire sealant tape for the mixing is preferably carried out after mixing the prepared first mixture, the second mixture and the third mixture and then extruding at 70 to 80 ° C.

The present invention also relates to a method for producing a flame retardant, comprising: preparing a first mixture by mixing expandable graphite and a flame retardant; Preparing a second mixture by mixing a thermoplastic resin and a binder adhesive; Preparing a third mixture by dispersing a binder adhesive in water in which any one of phosphoric acid and phosphate is dissolved, and then mixing any one selected from a carbon fiber, a glass fiber chop and a wire; And blending the prepared first mixture, second mixture, and third mixture, followed by shaping into Laura.

The shaping step may include, but is not limited to, mixing the prepared first mixture, the second mixture, and the third mixture in a weight ratio of 6: 1: 3.

The present invention also provides a sealant tape for fire protection, which is produced according to the above-mentioned production method.

The structure of the fire sealant tape is well known to those skilled in the art, so a detailed description thereof will be omitted.

The structure of the fire sealant tape and the like are known to those skilled in the art to which the present invention belongs.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the present invention is not limited by these examples.

Example 1 Production of Fireproof Sealant Tape

1. Preparation of materials

Expanding graphite of 80 mesh is available from EVERGREEN INDUSTRY CO. LTD (China).

GyBSOM CHOP (HEBEI YUNIU FIBERGLASS MANUFACTURING CO.LTD, China) having an average length of 7 to 12 mm and an average thickness of 11 mu m was prepared as the thermoplastic resin and the carbon fiber or wire cloth.

In addition, an acrylic adhesive (NOREX Paint, Korea) was prepared as a binder adhesive, and tricresyl phosphate was prepared as a phosphate.

2. Manufacture of fireproof sealant tape

600 g of the prepared expanded graphite and 180 g of aluminum hydroxide were mixed at a weight ratio of 10: 3 to prepare a first mixture.

10 g of the prepared hot melt PA and 25 g of acrylic adhesive as a binder were mixed at a weight ratio of 1: 2.5 to prepare a second mixture.

4 g of tricresyl phosphate was dissolved in water at 40 ° C to 50 ° C and mixed with 11 g of acrylic adhesive and dispersed. Then, 15 g of GYBSOM CHOP was mixed to prepare a third mixture.

The first mixture, the second mixture and the third mixture were mixed and heated in a self-manufactured extruder at a heating rate of 5 ° C / min to 70 ° C and extruded to prepare a fire retardant sealant tape.

Example 2 Production of Fireproof Sealant Tape

Except that a third mixture was prepared by mixing GYBSOM CHOP having a length of 12 mm and a thickness of 11 mu m to prepare a third mixture.

Example 3 Production of fire retardant sealant tape

The conditions were the same as those of Example 1, except that the first mixture, the second mixture, and the third mixture were blended in a weight ratio of 6: 1: 3, followed by shaping into Laura to prepare a fire retardant sealant tape.

≪ Comparative Example 1 > Production of fire retardant sealant tape

The conditions were the same as those of Example 1, except that the weight ratio of expanded graphite to aluminum hydroxide was 7: 1.

≪ Comparative Example 2 > Production of fire retardant sealant tape

Except that a third mixture was prepared by mixing PP having a length of 15 mm and a thickness of 30 占 퐉 to prepare a third mixture.

≪ Comparative Example 3 > Production of fire retardant sealant tape

The same conditions as in Example 1 were used except that aramid fiber was used instead of carbon fiber fiber or wire fiber.

<Experimental Example 1> Evaluation of flame and toxic gas barrier property

The flame barrier properties of the fire retardant sealant tape produced by the fire retardant sealant tapes prepared in Examples 1 to 3 and Comparative Examples 1 to 3 were evaluated.

Each manufactured fire-retarding sealant tape was directly burned up to 400 ° C at a temperature raising rate of 100 ° C / min using a cable tray as a protective cover material.

1, a cable tray 1 passing through a concrete wall or a concrete floor 2 is caulked and dumped by a concrete mortar 4 and the cable tray 1 is connected to a fireproof sealant tape 3, I wrapped it to wrap.

When the fire sealant tape 3 produced by the above-described Embodiments 1 to 3 is used as a protective cover material for the cable tray 1, the fire sealant tape 3 produced by Examples 1 to 3 ) Was expanded and the space was sealed to confirm that the flame blocking rate and penetration rate of toxic gas were low.

Further, by using the fire-retarding sealant tape manufactured by the above Comparative Examples 1 to 3 as a protective cover material for a cable tray, Evaluation was carried out. The fireproof sealant tape 3 manufactured by the comparative examples 1 to 3 failed to fill the space because it could not inflate and thus a fire occurred in the cable tray 1 made of plastic or rubber material, It was confirmed that the gas was discharged.

&Lt; Experimental Example 2 > Evaluation of flame and toxic gas barrier property

Referring to FIG. 1, when the fire sealant tape 3 produced by the first to third embodiments is treated at a portion connecting the upper layer and the lower layer, the fire sealant tape 3 expands, The flame blocking rate is low, so that the fire damage does not spread to the PVC pipe (1) connected to the upper layer. On the other hand, when the fire-retarding sealant tape 3 produced by Comparative Examples 1 to 3 is treated at the portion connecting the upper layer and the lower layer, the PVC pipe 1 connected to the upper layer is exposed to smoke It was confirmed that the gas was discharged.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various modifications and changes may be made without departing from the scope of the appended claims.

(1): PVC pipe, steel pipe, duct, or cable tray
(2): Concrete wall or concrete floor
(3): Fireproof sealant tape
(4): Concrete mortar

Claims (14)

delete delete delete delete delete delete delete delete delete Mixing the expanded graphite and the flame retardant to prepare a first mixture;
Preparing a second mixture by mixing a polyamide and a binder adhesive;
After dissolving either the phosphoric acid or the phosphate in the heated water and dispersing the binder adhesive in the heated water in which the phosphoric acid or the phosphate has been dissolved, an average length of 7 to 12 mm and an average thickness of 10 to 25 [ Preparing a third mixture by mixing gypsum gypsum with gypsum; And
Mixing the prepared first mixture, the second mixture, and the third mixture, and extruding the mixed mixture to shape a fireproof sealant tape,
Wherein the first mixture, the second mixture, and the third mixture are prepared separately and then mixed and extruded.
The method of claim 10,
The step of preparing the first mixture may include mixing the expanded graphite and the flame retardant at a weight ratio of 10: 3,
The step of preparing the second mixture may include mixing the polyamide and the binder adhesive in a weight ratio of 1: (2 to 2.5)
Wherein the step of shaping the fire sealant tape comprises mixing the prepared first mixture, the second mixture, and the third mixture followed by extrusion at 70 to 80 캜.
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