KR102083320B1 - Manufacturing method of fire prevention structure which integrates fire prevention mat and a fire protection structure manufactured using the same - Google Patents

Abstract

The present invention relates to a manufacturing method of a fire protection structure, which integrates a fire protection non-woven fabric and to a fire protection structure manufactured using the same. More specifically, the present invention manufactures an integral fire protection structure by inputting the fire protection non-woven fabric formed by dispersing and applying expandable graphite to a high-heat-resistant mineral fiber during heating and pultrusion, and prevents flame propagation to an internal structure by attaching the fire protection structure to a site requiring fire protection, and expanding expandable graphite when fire occurs. Therefore, the spread of fire and the leakage of toxic gases due to the combustion of a structure are prevented while blocking heat conduction, thereby preserving the durability of an existing structure.

Description

Manufacturing method of fire prevention structure which integrates fire prevention mat and a fire protection structure manufactured using the same}

The present invention relates to a method for manufacturing a fire protection structure integrating a fire protection nonwoven fabric and a fire protection structure manufactured by using the same. More specifically, the fire protection nonwoven fabric formed by dispersing and coating expandable graphite on a high heat resistant mineral fiber is added by heating and drawing. By manufacturing an integral fire protection structure and attaching the fire protection structure to a site requiring fire protection, expandable graphite expands in the event of a fire to prevent flame propagation to the internal structure, thereby preventing the spread of toxic gases due to the spread of fire and combustion of the structure. The present invention relates to a method for manufacturing a fire protection structure that integrates a fire prevention nonwoven fabric that prevents leakage and simultaneously blocks heat conduction, thereby preserving durability of an existing structure, and a fire protection structure manufactured using the same.

It is important to seal the penetration part in the construction work as a measure to localize or minimize the damage by preventing smoke and flames from spreading rapidly to the adjacent room in the event of a fire in an actual building. The construction to seal the penetrating part according to the performance of the fire-resistant structure is called, this is called refractory filling construction.

In the refractory filling construction, the pipes that penetrate through the fireproof compartments such as the floor or the wall of the building are inserted into the through-holes formed in the fireproof compartments, and the space between the pipes and the through-holes is filled with a fire-resistant filling structure and fired. Block flames or harmful gases from moving through the penetrations or pipes.

The conventional refractory filling structure consists of a structure filled with insulating material such as glass wool or refractory mortar, silicon, urethane, etc. in a metal filling case.

However, in the conventional refractory filling structure, the insulation is combusted or burned out due to the high temperature and high heat in the case of fire, so that a space through which the flame and the harmful gas can pass between the pipe and the through hole is generated. There is a problem that cannot be satisfied.

In order to solve such a problem, Patent Document 10-2015-0119660 "Fireproof filler of the through part of a building" discloses a technique for preventing the spread of fire using expanded graphite.

The expanded graphite used in this prior art strongly increases its volume with an expansion coefficient of 20 to 350 at a temperature above the so-called onset temperature. This phenomenon is caused by the compound inserted in the layer structure of graphite being rapidly heated to the above temperature to form a gaseous substance, thereby causing the graphite particles to expand or expand in a direction perpendicular to the layer plane.

This expansion behavior is used, for example, to impart fire protection seals in the penetrations of cables and pipes through walls and ceilings of buildings. The expansion of the expanded graphite sealing the penetrating part after reaching the expression temperature in the case of a fire is achieved, thereby suppressing or delaying the spread of fire through the penetrating part even after the cable and / or plastic tube guided through the penetrating part is burned.

However, with respect to materials other than non-combustible materials, there are differences in national standards and many cases are far from the actual fire situation. In the meantime, in some of these materials applications, the fire protection material itself is applied to the structure. However, due to the characteristics of this material, there were many cases that resulted in inconsistent with the actual situation according to durability, water resistance, and adhesion performance.

Republic of Korea Patent Publication No. 10-2015-0119660

The present invention has been made to solve the above problems,

Fire-resistant nonwoven fabric formed by dispersing and coating expandable graphite on high heat-resistant mineral fiber is added during heating drawing to manufacture an integral fire protection structure, and attaching the fire protection structure to a part requiring fire protection, thereby expanding the expandable graphite in the event of fire. Manufacture of fire protection structure that prevents flame propagation to the structure, thereby preventing fire leakage and leakage of toxic gas due to combustion of the structure and at the same time blocking heat conduction to integrate fire prevention nonwoven fabric which can preserve the durability of the existing structure. It is an object to provide a method and a fire protection structure manufactured using the same.

In order to achieve the above object, the present invention comprises the steps of 1) preparing a fireproof nonwoven fabric by dispersing and applying expandable graphite on a high heat-resistant mineral fiber;

(2) directly inserting the fireproof nonwoven fabric prepared in step 1 into a heating drawing mold; And

(3) a method of manufacturing a fire protection structure incorporating a fire protection nonwoven fabric, comprising the steps of: impregnating a resin into a heating drawing mold into which the fire protection nonwoven fabric is introduced.

In addition, the particle size of the expandable graphite of the present invention relates to a method for producing a fire protection structure integrating a fire protection nonwoven fabric, characterized in that 40 to 60 mesh (mesh).

In addition, the expansion ratio of the expandable graphite of the present invention relates to a method for manufacturing a fire protection structure integrating a fire prevention nonwoven fabric, characterized in that 300 to 450 times the particle size of the expandable graphite.

In addition, the resin of the present invention is an epoxy resin, an unsaturated polyester resin (Unsaturated Polyester Resin), an acrylic resin (Acrylic Resin), a vinyl ester resin (Vinyl ester resin), a phenolic resin (Phenolic resin) and polyurethane resin (Polyurethane resin) relates to a method for producing a fireproof structure integrating a fireproof nonwoven fabric, characterized in that any one selected from.

In addition, in the step 3 of the present invention, the heating temperature during the shaping is directed to a method for manufacturing a fire protection structure incorporating a fire prevention nonwoven fabric, characterized in that 170 ~ 190 ℃.

In addition, in step 3 of the present invention, remove the PET (Polyethylene Terephthalate) non-woven fabric that is conventionally added to the heating draw mold and the fireproof non-woven fabric is added to the heating draw mold, or the PET-based nonwoven fabric is added to the conventional heating draw mold After forming a fireproof nonwoven fabric, it is related with the manufacturing method of the fireproof structure which integrates the fireproof nonwoven fabric characterized by manufacturing by heating and drawing-molding integrally.

In addition, (1) the fire-resistant non-woven fabric by dispersing the high heat-resistant mineral fiber of the present invention (40) mesh size of the particle size (mesh) and expandable graphite 300 to 450 times the expansion ratio relative to the particle size;

(2) directly inserting the fireproof nonwoven fabric prepared in step 1 into a heating drawing mold; And

(3) forming a one-piece unit by pulling out at a heat of 180 ° C. to impregnate the polyurethane-based resin in the heating drawing mold into which the fireproof nonwoven fabric is put;

In the step 3, remove the PET (Polyethylene Terephthalate) non-woven fabric that is previously put into the heating draw mold and the fire-resistant non-woven fabric is added to the heating draw mold, or the fire-resistant non-woven fabric on top of the PET-based nonwoven fabric to be put into the conventional heating draw mold The present invention relates to a method for manufacturing a fire protection structure for integrating a fire prevention nonwoven fabric, characterized in that the formation is carried out, followed by heat drawing molding to produce an integrated body.

The present invention also relates to a fire protection structure manufactured by the manufacturing method of any one of claims 1 to 7.

As described above, the method for manufacturing a fireproof structure incorporating the fireproof nonwoven fabric of the present invention and the fireproof structure manufactured by using the fireproof nonwoven fabric formed by dispersing and applying expandable graphite to a high heat resistant mineral fiber during heating drawing molding By manufacturing an integral fire protection structure and attaching the fire protection structure to a site requiring fire protection, expandable graphite expands in the event of a fire to prevent flame propagation to the internal structure, thereby preventing the spread of toxic gases due to the spread of fire and combustion of the structure. At the same time to prevent leakage, by blocking the heat conduction, there is an effect that can preserve the durability of the existing structure.

1 is a photograph showing a fire protection structure according to an embodiment of the present invention,
2 is a photograph showing another fire protection structure according to an embodiment of the present invention.

The present invention having such a feature will be more clearly described through the preferred embodiment accordingly.

Before describing the various embodiments of the present invention with reference to the accompanying drawings in detail, it will be appreciated that the application is not limited to the details of construction and arrangement of components described in the following detailed description or shown in the drawings. will be. The invention can be implemented and practiced in other embodiments and can be carried out in various ways. In addition, device or element orientation (e.g., "front", "back", "up", "down", "top", "bottom" Expressions and predicates used herein with respect to terms such as "," "left", "right", "lateral", etc. are used merely to simplify the description of the present invention, and related apparatus. Or it will be appreciated that it does not indicate or mean that the element should simply have a certain direction. Moreover, terms such as "first" and "second" are used in the specification and the appended claims for purposes of illustration and are not intended to indicate or mean the relative importance or spirit.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a photograph showing a fire protection structure according to an embodiment of the present invention, Figure 2 is a photograph showing another fire protection structure according to an embodiment of the present invention.

In the method of manufacturing a fireproof structure incorporating the fireproof nonwoven fabric of the present invention, first, (1) dispersing and applying expandable graphite on a high heat resistant mineral fiber to form a fireproof nonwoven fabric, the particle size of the expandable graphite is 46 ~ 60 mesh (mesh) In the present invention, 50 mesh is optimized, but is not limited thereto. In this case, the graphite is used, the high heat-resistant mineral fiber (Alkaline Earth Silica Fiber) is a glass fiber system that withstands 1,100 ℃, the non-woven fabric means non-woven.

The expansion ratio of the expandable graphite is 300 to 450 times, and the expansion ratio of the expandable graphite is expanded to 300 to 450 times at 50 mesh, which is the particle size of the expandable graphite, and in the present invention, the expansion ratio of the expandable graphite. 325 times is an optimization, but is not limited thereto.

Herein, the thickness of the fireproof nonwoven fabric is 0.6 to 2mm. At this time, when the expandable graphite of the fireproof nonwoven fabric is expanded, the thickness of the fireproof nonwoven fabric is 6 to 20mm when it is expanded at an expansion factor of about 10 times.

Then, (2) the fireproof nonwoven fabric prepared in step 1 is directly put into a heating drawing mold.

Then, (3) after the step 2, the mold is pulled out in the heating drawing mold to impregnate the fireproof nonwoven fabric and the resin.

Here, the term 'pultrusion' refers to a method of impregnating a fireproof nonwoven fabric with a thermosetting resin, and passing a mold to apply high heat to form a mold, followed by a puller, to produce a product. .

The resin is epoxy resin, unsaturated polyester resin, acrylic resin, acrylic ester, vinyl ester resin, phenolic resin, and polyurethane resin. resin), but the present invention uses a polyurethane resin, but the present invention is not limited thereto.

Meanwhile, in the polyurethane resin composition, the cured material portion may be a polymerizable isocyanate having a content of isocyanate group (-NCO) of 30 to 35%, and preferably, a content of isocyanate group is 32%. It may be a isocyanate, but is not limited thereto.

The polymerizable isocyanate may be a yellowed isocyanate such as MDI (4,4'-diphenylmethane diisocyanate) or a yellowed isocyanate such as IPDI (isophorone diisocyanate) or HMDI (hexamethylene diisocyanate), and preferably MDIyl. May be, but is not limited thereto.

In addition, in the polyurethane resin composition according to an embodiment of the present invention, the polyoxyethylene glycol, polypropylene glycol, polyester polyol and diethylene glycol or triethylene glycol of the main portion of the polymer compound having a hydroxyl group (-OH) As a phosphorus polyol compound, a urethane bond (-NHCOO-) is formed by reaction of the hydroxyl group and the isocyanate group (-NCO) of the polyol compound. Polyoxyethylene glycol according to the present invention may have a molecular weight of 190 ~ 630, polypropylene glycol may have a molecular weight of 380 ~ 420, polyester polyol may have a hydroxyl value (hydroxyl value) of 285 ~ 315, This is not restrictive. Diethylene glycol or triethylene glycol of the present invention is used as a chain extender.

In addition, in the polyurethane resin composition according to an embodiment of the present invention, the aromatic amine catalyst may be a dicyclohexyl amine, but is not limited thereto. Due to the neutralizing function of the aromatic amine catalyst, the polyurethane resin composition of the present invention has a characteristic that the pot life is long and the curing time is maintained.

In addition, in the polyurethane resin composition according to an embodiment of the present invention, the additive release agent may be a mixture of an organic phosphate (Organo-phophate) and an organic-ester (Organic-ester) to which the amine is added, preferably The amine of diethylamine or dimethylethanolamine may be added in an amount of 1 to 10% by weight based on the total weight of the release agent mixture, but is not limited thereto. Organophosphate and organic-ester-based release agents can be conventional release agents used in unsaturated ester resins.

Herein, the term 'mold release agent' means that the plastic, molded or laminated product is prevented from adhering to a mold or a metal mirror plate, so that it can easily fall off, or the surface thereof is flat and beautifully finished. Means such as a silicone resin to be applied to the mold or metal mirror plate as possible.

On the other hand, the heating temperature during the pultrusion in step 2 is 170 ~ 190 ℃, in the present invention it can be molded integrally the polyurethane resin and the fireproof non-woven fabric without expanding the expandable graphite by heat drawing at 180 ℃.

In addition, during the pultrusion molding using the polyurethane resin of step 3, PET (polyethylene terephthalate) -based nonwoven fabric is added to the heating drawing mold to impregnate with the polyurethane resin, and then fire-resistant nonwoven fabric is added. A fireproof nonwoven fabric is further formed on the upper portion of the system nonwoven fabric and then heated and drawn to manufacture a single piece.

As a result of testing the manufactured fire protection structure, the expandable graphite started to expand at about 200 ° C. and fully expanded at about 450 ° C. At this time, the thickness of the fireproof nonwoven fabric which was tested was 0.6 mm, so that it expanded to a thickness of 6 mm when fully expanded. Fully shielded flame propagation to internal structures.

Hereinafter, a fire protection structure is manufactured by the method of manufacturing a fire protection structure described above, and the fire protection structure is formed in a flat plate shape or an uneven shape or various shapes as shown in FIGS. Attach to the required surface.

Here, the system for forming the fire protection structure includes a guide plate for guiding the fire-resistant non-woven fabric produced by dispersing and expanding the expandable graphite on the mineral fiber while the mineral fiber in the mat state is injected into the longitudinal direction;

An injection box connected to the outlet side of the guide plate and inserted into the fireproof nonwoven fabric guided by the guide plate, and impregnating the injected fireproof nonwoven fabric with polyurethane resin injected from the outside;

A drawing die connected to the outlet side of the injection box, wherein the polyurethane resin impregnated in the injection box is transferred to one side and cured and molded into an actual product;

It may be configured to include; but not limited to, a drawing device for pulling the product cured in the drawing dies.

Claims (8)

(1) preparing a fireproof nonwoven fabric by dispersing and coating expandable graphite having a particle size of 40 to 60 mesh and an expansion ratio of 300 to 450 times the particle size on the high heat resistant mineral fiber;
(2) directly injecting the fireproof nonwoven fabric prepared in step 1 into a heating drawing mold; And
(3) forming a one-piece including a step of drawing a mold at a temperature of 180 ° C. to impregnate the polyurethane-based resin in the heating drawing mold into which the fireproof nonwoven fabric is put;
In the step 3, remove the PET (Polyethylene Terephthalate) non-woven fabric that is conventionally added to the heating drawing mold and the fire-resistant non-woven fabric is added to the heating drawing mold, or the fire-retardant non-woven fabric on top of the PET non-woven fabric is conventionally added to the heating drawing mold After forming, it is heated and drawn at 180 ° C. to form a polyurethane resin and a fireproof nonwoven fabric in one piece without expanding the expandable graphite,
In the step 1, the thickness of the fireproof nonwoven fabric is 0.6 ~ 2mm, when the expansion of the expandable graphite of the fireproof nonwoven fabric, because the expansion of the expansion factor of 10 times, the thickness of the fireproof nonwoven fabric is characterized in that 6 ~ 20mm when inflated A method of manufacturing a fire protection structure incorporating a fire prevention nonwoven fabric. Fireproof structure manufactured by the manufacturing method of claim 1. delete delete delete delete delete delete

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