KR101631567B1 - Composite panel assembly structure of the binding site preventing the spread of fire - Google Patents

Abstract

The present invention relates to a sandwich panel binding structure to which a fireproof foaming adhesive composition or a foaming adhesive pad is bound, wherein the fireproof foaming adhesive composition or foaming adhesive pad includes a resin adhesive composition containing particles and polymers and is formed in the shape of a pad having a thickness of 1-5 mm and inserted into the connection site between convex portions and concave portions of the sandwich panel so that in case of fire, the fireproof foaming adhesive composition or pad is foamed by heat and thereby effectively seals any space in an assembly unit which is the connection site. Accordingly, the present invention can effectively prevent flames from spreading or moving through the gaps that may be present in a panel assembly unit, and can enhance the durability (for example, compression strength) to be sufficient for the performance of a fireproof structure through polymers contained in the fireproof foaming adhesive composition or foaming adhesive pad.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a composite panel assembly structure,

The present invention relates to a fire-resistant foamed adhesive pad and a polymeric resin foamable adhesive composition for bonding sandwich panels, which is used in a connection structure of a sandwich panel. The foamed foamed composition comprises a foamed composition containing a flame retardant and a foaming agent, Grains and graphite, and an acrylic or urethane polymer, wherein the graft is contained in an amount of 13 to 45 parts by weight based on 100 parts by weight of the polymer or the urethane polymer, To a thickness of about 1 to 5 mm. The refractory foamed adhesive pad is inserted into a joining portion to which a plurality of sandwich panels are connected to form an assembled structure of the sandwich panel.

A sandwich panel is generally called a sandwich panel in which an iron plate is formed into a desired shape and a heat insulating material is inserted into the iron plate. Such a sandwich panel can be divided into an external panel and a built-in panel depending on the application. Such sandwich panels can be classified into various types such as non-burning panels, flame retardant (1,2,3 grade) panels that do not burn well, fire-resistant panels capable of withstanding fire, and sound-absorbing panels.

Sandwich panels are usually classified into various names such as URETHANE, EPS, GLASSWOOL, MINERAL, and the like depending on the material of the heat insulating material. It may be divided into form or name.

These sandwich panels have superior characteristics compared to other building materials such as fast construction period, cheap construction cost, heat insulation, recyclability, construction workability, and colorful aesthetics, so that more than 95% of the industrial facilities including factory construction, refrigerator warehouse, Sandwich panels have been used in large quantities for the construction of prefabricated houses.

Advantages of the sandwich panel are that it can reduce the construction cost in terms of price, and it is better than other building materials such as insulation, soundproofing and moisture proofing. And it is advantageous in that the air can be shortened in comparison with the wet method. In addition, it is a practical building material because it is cheap in materials cost and can reduce the number of personnel expenses for construction compared with wood or other imported materials that are imported and used all over because it is produced in Korea.

However, such a sandwich panel is very vulnerable to fire, so that a fire occurs only by a spark due to a short circuit. In the actual fire, a large number of personal accidents and property damage occur frequently due to rapid burning of insulation used as a building material and suffocation by toxic gas There is a problem.

Therefore, the applicant has improved the structure of such a sandwich panel so that the side closure member and the lateral closure member are provided in a channel type in which one side is opened and the other side is closed, whereby the structure of the sandwich panel, (Patent No. 106262), but there is still a phenomenon that vapor, flame, and smoke penetrate through the assembled part (seam) closely attached during the fire to promote the diffusion of fire with the neighboring buildings do.

Registration No. 106262 (Registration Notice on February 25, 2011)

In order to solve the problems of the related art, the present invention provides a sandwich panel in which a heat insulating material is provided in a space between a front panel and a rear panel, and the sandwich panels are connected A polymeric resin foamable adhesive composition for sandwich panel bonding comprising at least one or more particles selected from the group consisting of carbon nanotubes, graphene and graphite, and a polymer-based polymer is formed at a joint region .

The polymeric resin foamable adhesive composition for sandwich panel bonding according to the present invention may be molded into a refractory foamed adhesive pad so that the sandwich panels can be inserted into a joint portion where the sandwich panels are connected to each other by a recessed portion and a protruded portion, And polyvinyl alcohol having a degree of polymerization of 3,000 to 6,000 and a degree of saponification of 99.9% or more, which is capable of improving the tensile strength of the refractory foamed bonding pad and further containing a dispersion aid, is contained in an amount of 13 to 45 parts by weight based on 100 parts by weight of the high- And furthermore more uniformly, the mouths themselves can be dispersed in the refractory foamed adhesive pads.

The fire preventive assembly structure for preventing panel interference according to the embodiment of the present invention includes a sandwich panel 100 provided with a thermal insulation material 40 in a space 30 between a front panel 10 and a rear panel 20, Wherein the closing member 50 is coupled along the edges of the heat insulating material 40, the front panel 10 and the rear panel 20 of the sandwich panel 100 and the closing member 50 Includes a side closure member 51 coupled to both sides of the vertical edge in an opposed manner to each other and a horizontal closure member 52 coupled to both sides of the horizontal edge in an oppressive fit with each other, A plurality of sandwich panels 100 having different recesses 300 or protrusions 400 formed along the outer circumferential portion of each of the sandwich panels 100 are coupled to each other by the recessed portions 300 and the protrusions 400, Between the mouthpiece 300 and the protrusions 400, Wherein the polymeric resin foamable adhesive composition for bonding a polymeric resin for board bonding comprises a polymeric resin foamable adhesive composition for bonding a polymeric resin, Or the urethane polymer, and the graft itself is contained in an amount of 13 to 45 parts by weight based on 100 parts by weight of the acrylic or urethane polymer.

As the polymer used in the present invention, an acrylic polymer or an urethane polymer may be used. The acrylic polymer is preferably a polymer of a monomer represented by the following formula (1), and the urethane polymer may have an isocyanate group 100 parts by weight of a urethane urea resin obtained by reacting a urethane prepolymer with an amino compound and 0.5 to 10 parts by weight of a curing agent.

CH ₂ = C (R ¹ ) COOR ² (Chemical Formula 1)

Wherein R ¹ is hydrogen or a methyl group, and R ² is an alkyl group having 2 to 14 carbon atoms.

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The polymeric resin foamable adhesive composition for sandwich panel bonding of the present invention preferably further comprises a dispersing aid for dispersing the particles, wherein the dispersing aid is a polyvinyl compound having a degree of polymerization of 3,000 to 6,000 and a saponification degree of 99.9% Alcohol is preferred.

The front panel 10, rear panel 20, side closure member 51 and transverse closure member 52 of the sandwich panel of the present invention are preferably galvanized steel sheets.

In the present invention, by inserting a polymeric resin foamable adhesive composition for bonding sandwich panels into a structure in which sandwich panels are connected, or a refractory foamed adhesive pad formed into a pad shape, the refractory foamed adhesive pad is foamed by heat during a fire, It is possible to effectively prevent the space where the fire-resistant foamed adhesive pad is formed, and it is possible to prevent fire from being generated or moved through the clearance of the panel assembly portion to effectively prevent the fire from spreading, Durability (e.g., compressive strength and the like) that satisfies the performance of the battery can be improved.

In addition, it is possible to ensure the uniform dispersibility of the mouths present inside the dispersing aid added to the refractory foamed adhesive pad, thereby improving the foaming performance.

Figures 1 and 2 schematically illustrate the structure of a sandwich panel of the present invention.
3 is a schematic view showing a polymeric resin foamable adhesive composition for sandwich panel bonding according to the present invention formed into a pad shape and applied to a joint part of a sandwich panel 100 and a joint part of a protrusion part.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

1 and 2, a sandwich panel 100 according to the present invention is provided with a heat insulating material 40 in a space between a front panel 10 and a rear panel 20, The front panel 10, and the rear panel 20 so that the closing member 50 is covered.

The front panel 10 is formed of a steel plate, preferably a galvanized steel plate, and the reinforcing recessed portion 101 and the reinforced convex portion 102 are repeatedly formed in the horizontal direction to increase the strength of the front panel 10, The rear panel 20 has a shape that is symmetrical with respect to the front panel 10 in the same shape as the front panel 10 and includes a reinforcing recess 201 and a reinforcing convex portion 202 which are vertically formed repeatedly in the horizontal direction, And to prevent the heat insulating material 40 provided inside the space from flowing.

The closing member 50 covers the edges of the front panel 10 and the rear panel 20 including the heat insulating material 40 to prevent the edges from spreading. The closing member 50 having such a function is constituted by a side finishing member 51 coupled to both sides of the vertical edge in an opposed manner and a transverse closing member 52 coupled to both sides of the horizontal edge by interference fit, .

The side closure member 51 and the lateral closure member 52 are configured such that one side thereof, that is, a side to be inserted by interference fit, is opened, and the other side is closed.

The side closure member 51 and the lateral closure member 52 are formed such that a butt portion 54 having an inclined shape at each of both side ends is cut so as to cut each side closure member 51 and the horizontal closure member 52 Can easily be abutted against each other.

The rear panel 20, the side closure member 51 and the lateral closure member 52 are preferably composed of a galvanized steel plate to increase the strength and at the same time to prevent corrosion and to be used for a long period of time.

The sandwich panel 100 may have a recessed portion 300 and / or a protruding portion 200 formed along an outer periphery of the closing member to form an assembly structure in which a plurality of sandwich panels are connected in a lateral direction or a longitudinal direction . FIG. 3 illustrates an assembled structure of a sandwich panel, which is illustratively transversely connected.

The kind and material of the heat insulating material 40 used in the sandwich panel 100 used in the present invention are not particularly limited, and any conventional known heat insulating material can be appropriately selected and used.

It is preferable that a plurality of the members are assembled in the transverse direction or the longitudinal direction by the protrusion and the concave structure formed along the outside of the finishing member of the sandwich panel having such a structure. In this case, the polymer resin foam for joining the sandwich panel It is preferred that the adhesive composition or the foamed adhesive pad be located.

The polymeric resin foamable adhesive composition for sandwich panel bonding may be formed by coating or spraying in the form of a composition. The polymeric resin foamable adhesive composition for bonding the sandwich panel may be subjected to ordinary molding to give a fireproofing layer having a thickness of 1 to 5 mm It is also possible to apply to the joint site in the form of foam adhesive pads, which reinforce the bonding forces of the different sandwich panels within the asperity structure formed along the closure member 50.

The assembled structure of the sandwich panel obtained through this process is a structure in which when the fire occurs, the polymeric resin foamable adhesive composition for bonding the sandwich panel to the structure in which the sandwich panels are connected or the fireproof foamed adhesive pad formed in the pad shape is foamed by heat, It is possible to effectively prevent a space that may occur in the assembling portion of the battery. Thus, it is possible to effectively prevent the fire from spreading by preventing the flame from being generated or moving through the gap formed in the panel assembling part, and even when the fire is not generated, the fire- Durability (e.g., compressive strength and the like) that satisfies the performance of the battery can be improved.

Therefore, in order to secure the fire resistance at the time of construction of the existing sandwich panel, the present invention is characterized in that a ceragewall which is difficult to be installed in the panel assembly portion is inserted at a thickness of 12.5 mm or an aluminum rivet is applied to both sides of the assembly portion at an interval of about 8 cm It is possible to effectively overcome the limitation of preventing the diffusion of the flame through the minute gap or space generated in the assembly part in case of fire.

In the present invention, at least one or more particles selected from the group consisting of carbon nanotubes, graphene, graphite, vermiculite, silica, quartz, mullite, zirconia, magnesia, spinel, alumina and pyrophyllite are added to the refractory foam composition, It is possible to remove minute gaps and spaces generated in the assembled portion by improving the adhesion between the front panel 10 and the back panel 20 and the adhesiveness.

In order to improve the strength of the refractory foamed bonding pad, the filler is preferably contained in an amount of 13 to 45 parts by weight based on 100 parts by weight of the high molecular weight polymer. In order to improve the dispersibility of the filler, the degree of polymerization is preferably 3,000 to 6,000, Or more of the polyvinyl alcohol dispersion aid having a degree of saponification of 3 to 6 parts by weight based on 100 parts by weight of the high molecular weight polymer.

The polymer is preferably a polymer of a monomer represented by the following formula (1), and more specifically, it is preferably a polymer of a monomer represented by the following formula (1), more specifically, ethyl acrylate, butyl acrylate, ethyl methyl acrylate, propyl acrylate, 2-ethylhexyl acrylate, 100 parts by weight of an acrylate monomer selected from methyl methacrylate, ethyl methacrylate and butyl methacrylate, 100 parts by weight of a functional acrylic monomer having a functional group selected from a hydroxyl group, an amide group and a carboxyl group substituted with an acrylate monomer It is preferable to use an emulsion-polymerized acrylic polymer in an amount of 1-20 parts by weight.

CH ₂ = C (R ¹ ) COOR ² (Chemical Formula 1)

Wherein R ¹ is hydrogen or a methyl group, and R ² is an alkyl group having 2 to 14 carbon atoms.

Further, in the present invention, in addition to the acrylic polymer, a urethane polymer obtained by including 100 parts by weight of a urethane urea resin obtained by reacting an urethane prepolymer having an isocyanate group at the terminal thereof with an amino compound and 0.5 to 10 parts by weight of a curing agent may be used. It is also possible to use a mixture of an acrylic polymer and a urethane polymer.

When the amount of the filler used is less than 13 parts by weight, the degree of improvement in the compressive strength of the refractory foam adhesive composition or the refractory foam adhesive pad is insignificant. When the filler content exceeds 45 parts by weight, Uniform dispersion in the refractory foamed bonding pads is difficult, resulting in a problem that the compressive strength becomes nonuniform depending on the position.

Even if polyvinyl alcohol as a dispersing aid is used for more uniform dispersion of the pores, when the amount of the pores is more than 45 parts by weight, the function of the dispersing aid can not be effectively exerted.

[ Experimental Example  One]

(A) a styrene resin, (B) a bromine-containing organic compound (flame retardant), (C) a zinc oxide (flame retarder), and (D) a flame retardant resin composition. ) Blowing agent and the amount of (C) zinc oxide to be added is less than 2 parts by weight based on 100 parts by weight of the styrene-based resin (A).

(A) to (C) and a particulate sieve were added to an extruder having a diameter of 65 mm of a two-stage extruder connected in series at a diameter of 65 mm to a diameter of 90 mm, Pad.

The raw materials were put into an extruder and heated to 200 DEG C and melted, plasticized and kneaded. Subsequently, a predetermined amount of a foaming agent was fed into a 65 mm extruder tip (opposite to the nip of an extruder having a diameter of 90 mm) The resin temperature was cooled to 120 DEG C in an extruder having a diameter of 90 mm and extruded into the atmosphere from a die lip having a rectangular cross section having a thickness of 2.5 mm and a width of 45 mm formed at the tip of an extruder having a diameter of 90 mm, 1.5 to 3 mm in the shape of a rectangular parallelepiped.

The specific ingredients are listed in Table 1 below, by weight.

Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Example 5 PSJ Polystyrene G9305 (A) 200 200 200 200 200 200 200 Tetrabromobisvenol A-bis (2,3-dibromopropyl ether) (B) 6 6 6 6 6 6 6 Zinc tin (C) 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Dimethyl ether (D) 6 6 6 6 6 6 6 black smoke 11 47 13 22 35 41 45 Polymethylmethylmethacrylate polymer 100 100 100 100 100 100 100 Compressive strength [MPa] 45 55 69 68 75 70 71 Heat resistance
(ΔE) 20 23 14 13 12 13 15

Compressive strength was measured according to KS F 2519: 2000 and KS F 2518: 2005 for the above Examples and Comparative Examples, and heat resistance was also measured.

In order to measure the heat resistance, the refractory foamed bonding pads of each of the comparative examples and the examples were crushed by a crusher, and the crushed material was put into a Labo plastomill. The crushed material was melted and kneaded at 200 ° C and taken out immediately. . The obtained plate-like molded article was heated in a hot press at 220 占 폚 for 40 minutes and then cooled with a cooling press to obtain a heat resistance test sample. The spectroscopic color system SD6000 manufactured by Nippon Seimei Kogyo Co., Ltd. was used to calculate? E for each of the standard white plates. At this time, the smaller ΔE, the higher the heat resistance.

As can be seen from the results of Table 1, it was found that the compression strength and heat resistance of the refractory foamed adhesive pad were improved as the mixing ratio of the particle graphite increased, and the physical properties of the refractory foamed adhesive pad of the present invention were as thin as 1.5 to 3 mm Despite the thickness, it means that it improves the convenience of installation and the heat resistance is excellent, and it is effective to prevent the spread of fire by foaming in case of fire.

In order to confirm the effect of addition of the dispersing aid, the compressive strength and heat resistance were measured in the same manner as in Example 5, in which the ratio of graphite in the particle chain was the highest, while varying the amount of the dispersing aid. Respectively.

Amount of dispersant (PVA) Compressive strength [MPa] Heat resistance (ΔE) Remarks 0 parts by weight 71 15 Example 5 2 parts by weight 71 15 4 parts by weight 73 14 6 parts by weight 75 13 8 parts by weight 72 13

When polyvinyl alcohol is added as the dispersing aid, the dispersion stability of the particles in the refractory foamed bonding pad can be further improved, and the compressive strength and heat resistance can be further improved.

[ Experimental Example  2]

In another embodiment of the present invention, experiments were conducted using a urethane polymer in the same manner as in [Example 1], and the mixing of the specific components is shown in Table 3 based on parts by weight.

Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Example 5 PSJ Polystyrene G9305 (A) 200 200 200 200 200 200 200 Tetrabromobisvenol A-bis (2,3-dibromopropyl ether) (B) 6 6 6 6 6 6 6 Zinc tin (C) 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Dimethyl ether (D) 6 6 6 6 6 6 6 black smoke 11 47 13 22 35 41 45 Urethane polymer 100 100 100 100 100 100 100 Compressive strength [MPa] 43 54 67 66 74 69 68 Heat resistance
(ΔE) 19 22 13 12 11 12 14

As can be seen from the results of Table 3 above, the compression strength and heat resistance similar to those of the acrylic polymer of Experimental Example 1 were observed, and it was confirmed that the effect of the dispersion aid also exhibited the same tendency.

10: Front panel 20: Rear panel
40: Insulation 50: Closing member
51: side closing member 52: transverse closing member
101, 201: reinforcing recesses 102, 202:
100: sandwich panel 200: protrusion
300:
400: foamed adhesive composition layer or foamed adhesive pad

Claims (7)

delete delete delete An assembly structure for a sandwich panel (100) having a heat insulating material (40) in a space (30) between a front panel (10) and a rear panel (20)
The closing member 50 is coupled to cover the edges of the heat insulating material 40, the front panel 10 and the rear panel 20 of the sandwich panel 100,
The closing member 50 is constituted of a side closing member 51 coupled to both sides of the vertical edge by interference fit, and a horizontal closing member 52 coupled to both sides of the horizontal edge by interference fit,
A plurality of sandwich panels 100 which are different from each other are formed along the outer circumferential portion of the closure member 50 so that the sandwich panel 100 is connected to the concave portion 300 by the protrusions 400 ,
Characterized in that a polymeric resin foamable adhesive composition for sandwich panel bonding is disposed between the concave portion (300) and the protruding portion (400)
Wherein the sandwich panel-joining polymeric resin foamable adhesive composition further comprises at least one of the grains selected from the group consisting of carbon nanotubes, graphene and graphite and an acrylic or urethane polymer, And 13 to 45 parts by weight based on 100 parts by weight of the polymeric polymer. 5. The method of claim 4,
Wherein the acrylic polymer polymer is a polymer of a monomer represented by the following formula (1).
CH ₂ = C (R ¹ ) COOR ² (Chemical Formula 1)
Wherein R ¹ is hydrogen or a methyl group, and R ² is an alkyl group having 2 to 14 carbon atoms. 5. The method of claim 4,
The urethane polymer is obtained by including 100 parts by weight of a urethane urea resin obtained by reacting an urethane prepolymer having an isocyanate group at the terminal thereof with an amino compound and 0.5 to 10 parts by weight of a curing agent. . 5. The method of claim 4,
Wherein the sandwich panel bonding polymeric resin foamable adhesive composition further comprises a dispersing aid for dispersing the mouths,
Wherein the dispersion aid is polyvinyl alcohol having a polymerization degree of 3,000 to 6,000 and a saponification degree of 99.9% or more.

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