KR20190054891A - The method of manufacturing for Semi-non-combustible sheet, and Semi-non-combustible sheet by the method, the composite panel and semi-non-combustible door using the sheet - Google Patents

Abstract

The present invention relates to a method for manufacturing a semi-non-combustible sheet, a semi-non-combustible sheet by the same, and a composite panel for construction and a semi-non-combustible door, using the semi-non-combustible sheet and, more specifically, to a semi-non-combustible sheet capable of minimizing generation of poisonous gas and spread of a flame when a fire breaks out, and a composite panel for construction and a semi-non-combustible door, using the semi-non-combustible sheet. According to the present invention, the method for manufacturing a semi-non-combustible sheet includes: a step of obtaining cotton fiber of a paste state; a porous mineral granule input and mixing step; a plate obtaining step of obtaining a mineral cotton fiber plate; a step of impregnating the obtained mineral cotton fiber plate with an impregnation liquid in which a thermosetting resin and a transfer flame resistance liquid are mixed and drying the impregnated mineral cotton fiber plate; a flat surface forming step of compressing the mineral cotton fiber plate by putting the mineral cotton fiber plate into a press and pressing the press and forming a smooth surface of the mineral cotton fiber plate; and an additional forming step.

Description

TECHNICAL FIELD [0001] The present invention relates to a semi-fire-retardant sheet, a semi-fire-retardant sheet by this manufacturing method, a composite panel for construction using the sheet, and a semi-fire- , a composite panel and a semi-non-combustible door using the sheet}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a semi-fire-retardant sheet, a semi-fire-retardant sheet formed by the method, and a composite panel and a semi-fire-retardant door using the same. More particularly, The present invention relates to a semi-fire-retardant sheet formed by molding a mineral sheet material made by mixing porous natural granules of expanded vermiculite or pearlite with natural minerals, a composite panel using the same and a semi-fire retardant door. Specifically, the semi-fire-retardant sheet of the present invention is used for a composite panel and a door to minimize the generation of flame and toxic gas when a fire occurs.

Generally, the interior of the wall used for construction is mainly made of expanded polystyrene, urethane, glass wool, etc. The outer wall of the wall is made of iron plate, aluminum, various ceramic boards, gypsum board, ceramic tile, The foamed polystyrene is not flame retardant and can cause a big loss of life in case of fire. Therefore, regulations on use are being strengthened. Urethane is excellent in heat insulation and has a certain degree of flame retardancy and is being used in the construction and insulation market. However, And the generation of toxic gas. Therefore, development of a fireproof or nonflammable building wall, a ceiling material, and a nonflammable board to be attached thereto is required.

Background Art [0002] Korean Patent Publication No. 10-2018-0053082 (Document 1) has been proposed as a prior art document related to a conventional flame retardant or nonflammable building finish material.

(Document 1) relates to a 'semi-flammable thermosetting resin composite panel and a method of manufacturing the same, wherein the base is formed by impregnating a substrate laminated with paper and a fabric with melamine resin, And a frame portion which is formed by impregnation and which is joined in multiple layers in the middle of the outer skin.

Through this, it has been suggested that it can be chemically functionalized to give its own flame retardancy and can be used in gymnasiums by increasing the surface strength and elasticity.

However, the technique of (Document 1) has a problem that since the melamine resin is impregnated into the water tank in which the melamine resin is stored in the process of laminating the paper and the fabric, the area and the thickness that can be molded are limited.

Meanwhile, the door is used for the purpose of entering and leaving the inside and outside of the building or inside and outside of the room. Of the doors installed at the entrance and exit, the fire door is structured to have a structural strength of more than a predetermined value to prevent frequent opening and closing and intrusion of outside intruders In addition, the fire protection characteristics are provided to prevent flames from spreading when a fire occurs, and the regulations on fire doors are also strengthened or changed every year. In particular, the damage caused by a large fire gradually increases Therefore, it is changing every year due to the problems of fire safety and the energy reduction policy of buildings.

Accordingly, it is urgently required to develop a fire door having a heat shielding function, a heat insulation function, a sealing function, and a condensation function as well as a secondary function. Conventionally, the fire door has a front plate and a rear plate made of iron, Since it is made of a heat insulating layer, it is possible to achieve only one purpose of fire prevention because it is made of steel, and it is difficult to produce a beautiful appearance, the installation workability is greatly deteriorated by a heavy load, There is a problem that the gas and the smoke are spread and the human life is damaged.

Korean Patent No. 10-797761 (Document 2) is a prior art document related to the door.

In the above-mentioned (Document 2), a fire-proof door made of wood has been proposed. The fire-proof door has a frame with a rectangular frame whose inside is formed of at least one filling space, and a wood-based fire door having a fire- Layer is made of a flame retardant liquid such as a magnesium board or a flame retardant such as a magnesium board.

On the other hand, in the case of dedicated fire doors, it is manufactured by using electro galvanized steel sheet (EGI) as an address material. In case of wood, it is manufactured by mixing wood and synthetic wood (MDF) There is a problem that corrosion due to moisture can not be prevented.

In order to solve these problems, a door using ABS (Acrylonitrile Butadiene Styrene) synthetic resin has recently been proposed, which is superior in impact resistance, easy to process, and inexpensive than metal or wood.

The ABS door is manufactured by a method of producing an ABS sheet by an extrusion method, joining a PVC decor sheet to the surface of a sheet, and applying heat to the sheet by vacuum molding. Here, acrylonitrile, butadiene, and styrene are the main components of the ABS resin, and the deco sheet adhering to the surface detects dioxin in case of fire, and hydrochloric acid is generated.

Accordingly, there is a problem that the ABS door is harmful to the human body when the fire occurs, and the magnesium board which forms the flame-retardant layer of the prior art has a problem in that it is heavy in weight, .

As described above, there is a demand for a technique that includes a nonflammable or flame-retardant material for a building finishing material, an interior board, a fireproof door, etc., and a finish material, a board, and a fireproof door improved in incombustibility or flame retardancy have been proposed. There is a problem that the usability is low.

(Document 1) Korean Patent Publication No. 10-2018-0053082 (Document 2) Korean Patent No. 10-797761

In order to solve the above-mentioned problems, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of polishing a cotton fiber material rich in cellulosic wax by mixing wet granules of expanded mineral vermiculite or perlite porous mineral granules, It provides a semi-incombustible sheet after cutting and provides a composite panel and semi-incombustible door that can be used for walls, ceilings, floors and so on to minimize flammability and toxic gas generation in case of fire, A non-combustible sheet, a composite panel using the same, and a semi-incombustible door.

The semi-fireproof sheet absorbs and reduces the noise of the room, and various patterns can be expressed on the surface. Therefore, the interior effect can be obtained without using the finishing material such as tiles, A non-combustible sheet, a composite panel using the same, and a semi-incombustible door.

In order to accomplish the above object, a method of manufacturing a semi-fireproof sheet according to the present invention comprises the steps of: beating and polishing a cotton fiber material in a water tank provided with a beater to obtain a cotton fiber material; Introducing and mixing a porous mineral granule into at least one of the expanded vermiculite and the pearlite as the porous mineral granules, and mixing the same uniformly to form a mixed composition in a puddle; A mineral sheet obtaining step of discharging the mixed composition onto a mesh and dewatering water to obtain a mineral sheet; Impregnating the mineral sheet with an impregnation solution in which a thermosetting resin and a flame retardant are mixed, and drying the impregnation solution; And a planar forming step of forming the surface of the mineral sheet smoothly by pressing the mineral sheet into the press and compressing it with pressure.

* Beating: It is called beating. It refers to pulping and kneading the pulp into the water and spreading the fiber evenly into the water.

Preferably, the surface of the mineral sheet after the above-mentioned flat forming process may include a secondary molding process for producing various colors, patterns and the like, and it is possible to use any one of thermal transfer printing, paint coating, Or by blister press forming method using an engraved or embossed or embossed metal mold.

Preferably, an inorganic pigment containing at least one of iron oxide, titanium oxide, cadmium sulfide, cadmium selenide, chromium oxide, iron potassium hexacyano iron oxide, carbon black and calcium carbonate in the process of introducing and mixing the porous mineral granules , An inorganic binder containing at least one of boric acid, boric acid, boric acid, burnt lime, silica fume, meta kaolin and gypsum is further introduced.

Meanwhile, the composite panel including the semi-fire-retardant sheet molded according to the above-described manufacturing method comprises a frame-shaped frame configured to form a filling material space therein, a refractory filler filled in the filling material space, And is composed of a semi-fire-retardant sheet adhered to one surface.

At this time, the frame may further include coupling means for coupling with other adjacent composite panels, wherein the coupling means includes a concave groove formed in any one of the directions opposite to each other in the frame-shaped frame, And a convex protrusion formed on the other side of the direction in which the protrusion is formed.

Meanwhile, the semi-fireproof door including the semi-fireproof sheet formed according to the above-described manufacturing method has a frame-like frame in which the filling material space is formed, a refractory filler to be filled in the filling material space, And is made of a non-combustible sheet.

The present invention as described above can absorb secondary noise by reducing indoor noise and realize various patterns in embossed or engraved form to enhance the interior effect of the interior while preventing secondary damage in case of a fire through semi-fireproof sheet made of semi-fireproof material, It is possible to obtain an energy saving effect by improving the heat insulating property, and it has moisture-proof property and is not corroded by moisture.

Composite panel and fireproof door including semi-fireproof sheet minimizes flame spreading in case of fire, reduces the generation of toxic gas and prevents damage to human life, and improves insulation and soundproofing performance to reduce energy consumption and interlayer noise It is possible to reduce the contention with the neighbors, and it is possible to form the pattern having a variety of colors, patterns, engraved, embossed patterns and the like, thereby improving the interior effect.

In addition, the effect of controlling the humidity of the indoor space can be obtained because of the humidity control effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing a method for producing a semi-fireproof sheet according to the present invention. FIG.
2 is an exemplary view showing a composite panel including a semi-fireproof sheet according to the present invention.
3 is an exemplary view showing a sandwich panel including a semi-fireproof sheet according to the present invention.
4 is an exemplary view showing a semi-fireproof door including a semi-fireproof sheet according to the present invention;
Fig. 5 is a photograph of the semi-incombustibility test for the semi-incombustible door according to the present invention
Fig. 6 is a comparative photograph of the combustion test between the semi-incombustible door and the general ABS door according to the present invention

Hereinafter, other objects and features of the present invention will be apparent from the following description of embodiments with reference to the accompanying drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a semi-fireproof sheet, a composite panel using the same, and a semi-fireproof door according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a method of manufacturing a semi-fire-retardant sheet according to the present invention in order, and a detailed description of each step will be given below.

(a) a step of obtaining a cotton fiber material in a clogged state by beating polishing

A cotton fiber material containing a large amount of cellulose was cut into a length of 40 mm, and then 3000 t of water was filled into a water tank equipped with a beater, 150 kg of cotton fiber material was put into the tank, and was subjected to beating polishing for 1 to 2 hours, Of cotton fibers.

Commonly known cotton fibers contain 98% of cellulose and bast fibers of flax, hemp, flax, and jute contain about 70% It contains cellulose. The wood, which is the raw material of the pulp, contains about 40 to 50% of cellulose.

In the present invention, a cotton fiber material containing a large amount of cellulose is preferably used, and the waste cotton fibers generated as a by-product in the cotton product manufacturing process are utilized so that the supply can be maintained smoothly at a low cost.

Cellulose contained in cotton fiber can increase the effect of quasi-incombustibility. In particular, cotton fiber can utilize abandoned cotton fiber which is used in industrial field or home and abandoned, so that the cost of raw / subsidiary material is low, It is an eco-friendly material that is supplyable and harmless to human body.

Since the chemical fiber is not made of cellulose, it can not be cohesively bonded with porous natural mineral such as expanded vermiculite or pearlite granule because it is not loosened by water even by beating polishing.

Of course, cellulose can be obtained from fibers other than cotton fibers or pulp. However, it is most preferable to use the waste fiber as described above because it is expensive to manufacture and, above all, high quality cellulose can not be obtained compared with the waste fiber.

It is also possible to utilize bast fibers such as flax, hemp, moss and jute containing about 70% of cellulose and wood as a raw material of pulp containing about 40 to 50% of cellulose, but in the case of bast fiber and wood, There is a drawback that the effect is low.

Preferably, the inclusion of the cotton wool together with the rock wool, rock wool, strengthens the strength of the mineral sheet, thereby enhancing the strength of the mineral sheet.

Rockface is also called rock fiber, and is made by mixing limestone with a mixture of rocks such as andesite, basalt, nickel and manganese slag. Basalt and ansicite are melted in electric furnace at 1,500 ~ 1,600 ℃ and blown out from the nozzle at the bottom of the furnace with compressed air. The length of the fiber is 10 ~ 100mm, and the thickness is 2 ~ 20μm.

The content of the rock surface is suitably about 20 to 50 parts by weight with respect to the cotton fiber material 100.

(b) Porous Mineral Granule Loading Mixing Process

It is preferable to add expanded vermiculite as the porous mineral to the above-mentioned cotton-like fibrous material.

In this case, expanded vermiculite may be included in an amount of 50 to 70 parts by weight based on 100 parts by weight of the cotton fiber material. When the expanded vermiculite is included within the above-mentioned range, The semi-fireproof function can be improved.

Expanded vermiculite is an inorganic substance with excellent nonflammability, good heat insulation, light weight (0.12 ~ 0.2), so it is not precipitated in a tank tank but floats in water. It mixes naturally with bevelled polished fiber in mixing process,气 hole) into the corners and connect the expanded vermiculite granules to each other at the same time.

The expanded vermiculite is crushed to a particle size of about 1 to 3 mm and then fired at 1000 to 1200 ° C to swell and swell, and the density thereof is reduced to float in water.

Expelled vermiculite tends to aggregate due to sticky properties. Therefore, when pearlite is added in an amount of 30 to 50 parts by weight, pearlite acts as a crosslinking agent to keep the spacing of the expanded vermiculite constant to achieve more uniform mixing.

In a preferred embodiment, 50 to 70 expanded vermiculite and 10 to 30 pearlite are added to and mixed with the cotton fiber material 100, so that the microfibers of the cotton fiber material and the porous mineral are tangled and integrally bonded. That is, since the expanded vermiculite and pearlite are porous, the microfibers of the cotton fiber material floating on the water float on the water because they are porous, are inserted into the pores of the expanded vermiculite and pearlite, and tangled and tangled strongly.

While it is not included in the above examples, it is preferable to add 1 to 5 daily light and 1 to 5 diatomaceous earth sequentially to allow the mineral to penetrate between the cotton fiber materials to be integrated with the cotton fiber material.

 The cotton fibers loosened in water by beating polishing invade into the pores formed in the porous natural mineral granules to bind the minerals, and the mineral sheet obtained therefrom appears to be mainly mineral.

The diatomaceous earth is a sediment formed by accumulation of diatomaceous earth's harmful harmful substances, which are unicellular algae, on the bottom of the sea or lake. The diatomaceous earth is mainly composed of silica (SiO2), which is an inorganic compound and has various performances such as deodorization, It has excellent flame retardancy.

On the other hand, expandable graphite can be added. Because expanded graphite has a layered structure of graphite, when atoms or small molecules are inserted between the layers, heat is applied and the particles are expanded like an accordion several hundred times If 1 to 5 parts by weight of expanded graphite powder is further added, the fibers are tightly adhered to each other through the pores of the cotton fiber. Thus, when expanded in the case of fire, they can block oxygen and have a self-extinguishing function, The quasi-incombustibility of the fibers can be further improved. However, if an excessive amount is applied, the color of black may be displayed, which may cause a problem in painting.

On the other hand, an inorganic pigment containing at least one of iron oxide, titanium oxide, cadmium sulfide, cadmium selenide, chromium oxide, iron potassium hexacyano iron oxide, carbon black and calcium carbonate and inorganic pigments containing at least one of boric acid, boric acid, Kaolin, and gypsum may be further added.

The inorganic pigment may be selected from any one or a combination of two or more thereof according to a desired color, and is added in an amount of 5 to 10 parts by weight based on 100 parts by weight of the cotton fiber material.

      The inorganic binder is used to increase the strength and the fire-retardant performance of the mineral and the cotton fiber material. The inorganic binder is added in an amount of 2 to 20 parts by weight based on 100 parts by weight of the cotton fiber material. The inorganic binder enhances the thermal stability of the inserted cotton fiber material, expanded vermiculite, inorganic pigment, and further ensures that the fiber material has strength and nonflammability.

(c) Mineral sheet dehydration process

Since the mixed composition in which the cotton fiber material and the porous mineral are mixed together is in a state containing water, the mixed composition is discharged onto the mesh to remove water (water), and the mineral composition Obtain ashes.

The dewatering is carried out by natural dewatering or compression rollers or by dewatering through a pressure roller process so that the mineral sheet after dewatering has a water content of 20 to 30%.

When the water content is less than 20%, the mineral sheet material may be dried and easily broken by the external impact. If the water content is more than 30%, the specific gravity of the flame-retardant solution impregnated in the flame- % Moisture content.

(d) Impregnation and drying process of thermosetting resin and flame retardant

A process for impregnating a dehydrated mineral sheet material with a mixture of a thermosetting resin and a phosphorus-based flame-retarding liquid and drying the flakes by a hot-air dryer, wherein the mineral sheet is impregnated with a mixture of a thermosetting resin and a flame- In addition, it can further improve the incombustibility.

Examples of the thermosetting resin include phenol resin, urea resin, melamine resin, polyester resin, alkyd resin, silicone resin, and epoxy resin.

When the thermosetting resin is molded after being heated and once hardened to an insoluble state, the thermosetting resin has a flame retardancy that does not cause further plasticity even after heating, so that the mineral sheet has a flame retardant effect by using such characteristics.

The phosphorus flame retardant includes phosphorus flame retardant, phosphorus / halogen flame retardant, and phosphorus / nitrogen flame retardant. When the phosphorus flame retardant is burned, polymetaphosphoric acid is produced by thermal decomposition of the phosphorus compound, The carbon film formed by the dehydration action at the time of generation has the effect of blocking oxygen by blocking oxygen, so that a nonflammable effect can be obtained.

The mixed solution is impregnated into the mineral sheet material so as to have a weight ratio of 100 to the total weight of the mineral sheet material.

The impregnated mineral sheet material is dried by a hot air dryer, preferably through a hot air temperature of 180 ° C, and cut to an appropriate size. The nonwoven fabric is cut into a state of a nonwoven fabric having a width of 1200 mm, a thickness of 4.5 mm, and a length of 2500 mm.

(e) planar forming process

The forming process, which is further executed after the drying process, is a process of putting a mineral sheet material in the form of a nonwoven fabric into a press, and applying pressure to compress the surface of the plate material. At this time, since heat and pressure are applied, the residual moisture and the flame retardant liquid evaporate, and at the same time, the thermosetting resin adheres to the mineral sheet material at the melting point, so that a hard mineral sheet is obtained.

Preferably, the water-based paint is applied to the surface of the mineral sheet having the planarization, so that the mineral sheet has various colors and designs, and then coated and dried.

(f) Additional molding process

In order to produce various colors, patterns, etc. on the surface of the mineral sheet after the above-mentioned planar forming process, a heat transfer printing, a paint coating process or a low pressure melamine (LPM) or a high pressure melamine . As a result, various planes can be produced on the planar mineral sheet, and in particular, it can be molded by embossing or embossing on the surface of the mineral sheet by molding using a metal engraved with embossing or embossing to have a three-dimensional effect.

That is, the hard mineral sheet formed through the planar forming step (e) can be pressed in the die mold, which is seen as a two-tone hue by pressing, thereby improving the three-dimensional feeling. Preferably, the thickness of the pressed mineral sheet through the additional forming process is maintained at 2 to 3 mm.

In this case, it is preferable to use a paint used to prevent toxic gas from occurring when a fire occurs, or a material obtained by flame-retarding the LPM or HPM.

The following are various test results of the semi-fire-retardant sheet of the present invention manufactured through the above-described process.

<Test Example>

1) Semi-incombustible test

The test results shown in [Table 1] below show the results of testing the semi-fire-retardant sheet by the fire prevention test institute, an accredited testing laboratory.

Test Items Sample number One 2 3 standard Semi-fireproof material Heat release rate Total calorific value 2.4 3.1 6.5 8MJ / ㎡ or less Time (s) exceeding 200kw / m2 0 0 0 10s or more Cracks, holes and melting through the specimen none none none Not to be Gas hazard Mean behavioral downtime of rats 13 minutes 54 seconds 14 minutes 15 seconds 14 minutes 05 seconds More than 9 minutes

As shown in Table 1, the semi-fire-retardant sheet according to the present invention passes through the criteria of semi-fireproofing, which is a material having properties equivalent to the fire-retardant material (Article 2 of the Construction Act Enforcement Decree) It does not cause significant detrimental deformation, and satisfies the condition that there is no residual flame for 30 seconds or more after completion of heating.

2) Whether or not asbestos is contained

With regard to recent harmfulness of asbestos, the asbestos sheet according to the present invention has not detected asbestos as a result of the asbestos detection test. This is in accordance with the test results of Korea Institute of Construction & Living Environment Test.

3) Mold resistance

Aspergillus brasiliensis ATCC9642, Penicillium funiculosum ATCC 11797, Chaetomiun globosum ATCC 6205, Trichoderma virans ATCC 9545 and Aureobasidium pullulans 15233 were cultivated for 4 weeks in the experiment to test the mold resistance of the semi-fire-retardant sheet. However, The growth of mycelium was not recognized. Tests related to this fungus resistance are based on the test results of Korea Institute of Construction & Living Environment Test.

4) Antibacterial test

In the antibacterial test for the fire retardant finish according to the present invention, Escherichia coli and Pseudomonas aeruginosa showed bacterial reduction rate of 99.9% after 24 hours. The tests related to this antimicrobial test are based on the test results of the Korea Institute of Construction & Living Environment Test.

As can be seen from the above test results, the semi-fireproof sheet according to the present invention passes through the criteria of semi-fireproofing, which is a material having properties equivalent to the fireproof material (Article 2 of the Construction Act Enforcement Decree) It does not have remarkable detrimental deformation such as melting and cracking during heating, and there is no residual flame for more than 30 seconds after the end of heating, which is passed the test standard of Korean Industrial Standard KSF2271 (flame retardant grade 2).

Meanwhile, at least one selected from hpm (high pressure melamine sheet), yellow ocher paper, aluminum foil, copper foil laminate, mirror, and vignetting is adhered to the semi-fireproof sheet and cut into a certain standard in a lapped state, A semi-fire-retardant sheet can be formed.

In addition, a luminescent or luminescent coating material is further added to the ceiling of the corridor so that it can be used for evacuation guidance when a fire occurs.

Various applications including the semi-fire-retardant sheet according to the present invention will be described with reference to FIGS. 2 to 4. FIG.

2 illustrates a composite panel 100 including a semi-fireproof sheet according to the present invention,

A frame 10 in which a filler space 11 is formed,

A refractory filler 20 filled in the filler space 11,

And a semi-fire-retardant sheet (1) attached to at least one of both surfaces of the frame (10).

The frame 10 has a plurality of flame-retarded woods or a square pipe of a metal material coupled to each other so as to form a filling material space 11 at the center. The thickness, size and shape of the frame are not limited. That is, the composite panel 100 may be formed into a square shape as shown in the drawing, or may have various shapes such as a circular shape, a rectangular shape, and an ellipse, depending on the use of the composite panel 100.

On the other hand, the flame-retarded wood is treated with wood by injecting or immersing a chemical agent, or by spraying a paint and a heating furnace coating which delay the combustion due to the low flammability and thermal conductivity of the film itself, Manufacture of wood products in accordance with Article 17 (Evaluation of stability of timber products) and Article 15 of the Enforcement Decree of the same Act as the following "Wooden Products Sustainable Use Law" as wood treated with fire retardant paints applied to fire- , And that the safety evaluation of wood products is required to prevent physical and chemical damage to people and the environment when they are sold or used. This satisfies the performance criteria of the flame retardant wood described in the following [Table 2].

Item Performance criteria Total calorific value 8MJ / m2 or less for 5 minutes Maximum heat release rate Not exceeding 200kW / m2 continuously for more than 10 seconds for 5 minutes Cracks, holes and melting There shall be no harmful cracks, holes and melting of the room image passing through the specimen after heating for 5 minutes. Mean Behavior Downtime of Rats More than 9 minutes Iron corrosion Iron corrosion resistance 2.0 or less Hygroscopic Moisture absorption ratio 1.2 or less

The frame 10 may include a plurality of pipes arranged in the center of the filling material space 11 across the filling material space 11 in order to improve the durability of the filling material space 11, .

The refractory filler material 20 is filled in the filler material space 11 so as to obtain heat insulation, hygroscopicity, soundproofing effect and the like, and at the same time, it can reduce the damage of human life through a high flame retardancy when a fire occurs.

To this end, the refractory filler 20 is made of phenolic foam, and the phenol foam is heated in an oven so that the temperature of the phenol resin, the emulsifier and the foam stabilizer is kept at room temperature (27 ° C) When the temperature of the mixture reaches 27 DEG C, the mixture is stirred at 1000 rpm for 1 minute. After adding the foaming agent, the mixture is mixed at the same rotation speed for 1 minute. Thereafter, the curing agent is added and mixed for 30 seconds (sec), and then cured in an oven at 50 ° C for 1 hour.

The test results on flame retardancy and heat resistance of these phenol foams are described in 'Flame Retardancy and Heat Resistance Studies of Phenol Foam and Polyurethane Foam', Journal of the Korean Institute of Gas Engineers, Vol.17 No.1 pp35 ~ 41.

In summary, the phenol foam obtained as described above rapidly decomposed at a faster rate than the polyurethane foam, but the remaining amount at 800 ° C. is much higher than that of the polyurethane foam, and the phenol foam is lower than the polyurethane foam The average heat release rate and the maximum heat release rate were shown. The effective combustion rate of TEP - added phenol foam was 17.86MJ / kg, which was the lowest, and the mass loss rate of phenol foam was 0.006 ℃ / Which is lower than 1/20 of the average of 0.03 g / s of foam.

The amount of smoke was 9 ~ 70m2 / ㎡ for phenol foam, 126 ~ 303m2 / ㎡ for polyurethane foam, and phenol foam was very small as 1/2 ~ 1/34 compared to polyurethane foam.

By using the phenol foam as described above, it is possible to obtain heat insulation, hygroscopicity and sound insulation effect, and at the same time, it can reduce the blur of fire and the generation of toxic gas through high flame retardancy when a fire occurs, )

Alternatively, the filler space inside the frame may be provided with a calcium board instead of phenol foam.

The filler space formed by the frame 10 in Fig. 2 is filled with a filler material and both surfaces formed by the frame and the filler are attached to at least one side of the incombustible sheet of the present invention. The composite panel of FIG. 2 can be attached to the incombustible sheet of the present invention only on one side, depending on the place of use. In this case, the other surface may be made of a gypsum board so that soundproofing and adiabatic effects are further added.

An organic urethane adhesive is used to adhere the semi-fire-retardant sheet to the frame and the surface of the filler, and an expanded graphite is added to the organic urethane adhesive in an amount of 5 to 30 weight ratio. As a result, the expanded graphite expands when a fire occurs, which makes it difficult to spread the flame.

3 shows that the semi-fireproof sheet 1 is attached to both sides of the frame 10, thereby improving the heat insulating property and absorbing the noise. Thus, the composite panel 100 Can be used as a finishing material to be attached to the inner wall or outer wall of a building.

That is, the sandwich panel 200 is formed by attaching the semi-fireproof sheets 1 on both sides of the frame 10, and by using the sandwich panel 200 as the inside and the outside material of the building, Secondary damage can be minimized.

Herein, the composite panel 100 may further include fastening means 30 for coupling with other adjacent composite panels 100 (see enlarged original of FIG. 3).

The fastening means 30 is composed of a concave groove 31 formed at one side of the frames on the left and right sides and a convex protrusion 32 formed at the other side of the frame, It is possible to maintain a firm fixing force by bonding.

When the composite panel 100 is used as a partition for partitioning an indoor space, a plurality of recesses 31 and an iron protrusion 32 are formed on the frame 10 at a predetermined angle, So that it is possible to divide the indoor space into various forms.

4 shows a configuration in which a semi-fireproof door 1 is attached to both sides of the frame 10 and a handle 50 and a hinge are added to the frame 10 to form a semi-fireproof door 300, Insulation and soundproofing effect is high, and when the fire occurs, there is no smear of flame and toxic gas emission, so that it is possible to minimize the damage of the fire caused by the fire and toxic gas.

As described above, the semi-fireproof sheet 1 according to the present invention is capable of expressing various patterns on its outer surface, and has a width of 1200 mm, a thickness of 4.5 mm, a length of 2500 mm, or a thickness of 2 to 3 mm And it is advantageous in that it can be cut into various shapes and shapes while being light in weight.

Therefore, the interior and exterior finishes for buildings and semi-fireproof doors including the semi-fireproof sheet 1 according to the present invention can improve the heat insulation and soundproofing, thereby reducing the energy saving effect and the neighboring conflicts due to the interlayer noise, It is possible to express the engraved, embossed and engraved engraving, so that not only the interior but also the outdoor interior effect can be obtained.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

1 nonflammable sheet
10 frames
11 Filling space
20 Refractory filler
30 coupling means
31 Groove
32 iron projection
40 semi-incombustible door
100 composite panel
200 sandwich panel
300 semi-fireproof door
S 10: Fiber Beading Polishing Process
S 20: Porous mineral granule input and mixing process
S 30: Mineral sheet re-acquisition process
S 40: Step of impregnating impregnation solution and drying)
S 50: Planar forming process
S 60: Additional molding process

Claims (6)

A step (S10) of beating a cotton fiber material in a water tank provided with a beater to obtain a cotton fiber material in a padded state;
(S20) a porous mineral granule loading and mixing step (S20) in which at least one of the expanded vermiculite and pearlite is charged as the porous mineral granules, ;
A mineral sheet material acquisition step (S30) of discharging the mixed composition onto a mesh and dehydrating water;
Impregnating the obtained mineral sheet material with an impregnation solution mixed with a thermosetting resin and a flame retardant, and drying (S40);
And a flat forming step (S50) of forming the surface of the mineral sheet material smoothly by applying the mineral sheet material to the press and compressing it by applying heat and pressure.
The method according to claim 1,
Wherein in the beating polishing step (S10), a rockface is added together with a cotton fiber material to be beaten.
3. The method of claim 1 or 2, wherein the porous mineral granule loading and mixing step (S20)
Inorganic pigments containing at least one of iron oxide, iron oxide, titanium oxide, cadmium sulfide, cadmium selenide, chromium oxide, iron potassium hexacyano iron oxide, carbon black and calcium carbonate, and inorganic pigments such as sodium borate, boric acid, quicklime, silica fume, Gypsum, and gypsum. The method for producing a semi-fire-retardant sheet according to claim 1, wherein the inorganic binder is at least one of gypsum and gypsum.
A semi-fireproof sheet produced by the method of any one of claims 1 to 3.
A semi-fireproof sheet (1) produced by the method of any one of claims 1 to 3,
A frame 10 in which a filler space 11 is formed,
A refractory filler 20 filled in the filler space 11,
Wherein the semi-fireproof sheet (1) is attached to at least one of both surfaces of the frame (10).
A semi-fireproof sheet (1) produced by the method of any one of claims 1 to 3,
A frame 10 in which a filler space 11 is formed,
A refractory filler 20 filled in the filler space 11,
And a semi-fireproof sheet (1) attached to both sides of the frame (10).

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