KR101863514B1 - Nonflammable interior material of building - Google Patents

Abstract

The present invention relates to a nonflammable interior material of a building, which has nonflammability because of including a carbon fiber felt made by needle punching, and is excellent at sound insulating properties, sound absorbing properties, and heat insulating properties because of inclusion of a TPE and a melt-blown fiber. The nonflammable interior material of a building comprises: a carbon fiber felt formed by the bonding of a plurality of carbon fiber fabrics by bridging carbon fiber by needle punching; a thermoplastic elastic sheet comprising a thermoplastic elastic body (TPE) coupled to the carbon fiber felt; an insulating member consisting of a fiber web which is coupled to the thermoplastic elastic sheet, and includes a melt-blown microfiber made of a thermoplastic resin, and a nonwoven fabric formed on both sides of the fiber web; and an adhesive sheet applied to both surfaces of the thermoplastic elastic sheet such that the carbon fiber felt and the insulating member can be adhered and combined.

Description

[0001] NONFLAMMABLE INTERIOR MATERIAL OF BUILDING [0002]

The present invention relates to an inner material, and more particularly, to an inner material comprising carbon fiber felt made by needle punching, having a nonflammable property, including TPE and meltblown fibers, and having excellent sound insulation, The present invention relates to a non-combustible building interior material.

Recently, noise pollution has become serious as the types of noise sources generated from the outside and inside of the building have become more diverse. In the case of apartments such as apartment buildings, legal regulations for regulating the noise level between the floor and the household have been strengthened. In recent years, domestic and foreign fire incidents have rapidly spread through the interior and exterior of buildings, spreading into large-scale fire accidents, and the occurrence of many human accidents due to the generation of toxic gas, .

Patent Document 1 discloses a first meltblown nonwoven fabric layer having a mean diameter of 0.1 to 20 microns and a first meltblown nonwoven fabric layer having an average density of 50 kg / and kg / ㎥, and a basis weight of 50 kg / ㎡ ~ 4,000 g / ㎡, a melt blown nonwoven fabric under the measurement conditions of the wind speed 5.3 cm / sec, characterized in that the pressure loss is _{2 mmH 2 O ~ 10,000 mmH 2} O It is public.

Patent document 2 discloses a soundproof panel including an outer membrane and a plurality of cells formed therein, and a soundproof panel for absorbing and attenuating acoustic energy and a meltblown fiber.

However, the above-described Patent Documents 1 and 2 have a problem in that they can not satisfy both the heat insulating property, the sound absorbing property and the nonflammability required for the interior material, and can not block the harmful electromagnetic waves generated from the indoor and outdoor electronic devices.

In Patent Document 3, a heat-melt film layer is formed on one surface of an inorganic board and a phenolic resin is impregnated on the heat-melt film layer in an amount of 25 to 35 wt% with respect to the craft substrate, and a melamine resin or a urea A heat-melt film layer is laminated on the other side of the inorganic board, a kraft base layer in which the phenol resin is impregnated in an amount of 25 to 35 wt% with respect to the craft substrate, and a melamine resin or urea resin An environmentally friendly nonflammable building interior material in which a printed pattern sheet layer impregnated with a water-repellent layer is laminated in order is disclosed.

However, the above-described Patent Document 3 is intended to reduce the generation of toxic gases, and it can not provide incombustibility, and there is a problem that the spread of flames and the diffusion of fire can not be prevented in advance.

Korean Patent Registration No. 10-0574764 (published on April 28, 2006) United States Patent No. 6,220,388 (published April 24, 2001) Korean Utility Model Registration Bulletin No. 20-0453809 (Released May 30, 2011)

The present invention relates to a lightweight, lightweight, excellent nonflammable material that does not burn or smoke, has excellent heat insulation, increases energy efficiency of a building, has excellent sound absorption, sound insulation and electromagnetic wave shielding performance, An object of the present invention is to provide an interior material of non-burnable building which is prevented from static electricity, has excellent stretchability, is easily restored, is not deformed well, is smooth in external touch, and has improved durability.

In order to solve the above problems, the present invention provides a carbon fiber felt comprising: a carbon fiber felt formed by binding a plurality of carbon fiber fabrics by entangling carbon fibers by needle punching; A thermoplastic elastic sheet made of a thermoplastic elastomer (TPE) bonded to the carbon fiber felt; A heat insulating member connected to the thermoplastic elastic sheet and composed of a fibrous web including meltblown microfine fibers made of a thermoplastic resin and a nonwoven fabric formed on both sides of the fibrous web; And an adhesive sheet applied on both sides of the thermoplastic elastic sheet to bond and adhere the carbon fiber felt and the heat insulating member.

According to the present invention, a lightweight, lightweight, excellent nonflammable material does not burn or smoke, excellent heat insulation increases energy efficiency of a building, excellent sound absorption, sound insulation and electromagnetic wave shielding performance, and a separate finishing material No static electricity is prevented, and the stretchability is excellent, so that it is easily restored and is not deformed well, the external touch is smooth, and the durability is improved.

1B is a cross-sectional view of an incombustible building interior according to an embodiment of the present invention. FIG. 1C is an enlarged view of a portion A of FIG. 1A; FIG. to be.
2A to 2C are diagrams showing the constitution of a carbon fiber felt.
3 shows an apparatus for manufacturing a fibrous web according to an embodiment of the present invention.
4 is a photograph showing meltblown microfibers.
FIG. 5A is a photograph of a fiber web structure according to an embodiment of the present invention, and FIG. 5B is a photograph of a fiber web section taken by an electron microscope according to an embodiment of the present invention.
FIG. 6A is a view showing an electromagnetic wave shielding sheet according to an embodiment of the present invention, and FIG. 6B is an electron micrograph of a hollow tube according to an embodiment of the present invention.
7 is a photograph of an insulating pad according to an embodiment of the present invention.

Hereinafter, with reference to the drawings, specific details for implementing the interior material of the non-burnable building according to the present invention will be described in detail with reference to examples.

1A to 1C, the non-burnable building interior material 1 according to the present invention is incombustible, including carbon fiber felt made by needle punching, and comprises TPE and meltblown fibers, And is made of a carbon fiber felt (100), a thermoplastic elastic sheet (200), an adhesive sheet (300), and a heat insulating member (400).

Carbon fiber is a fibrous form of carbon material. It has a fibrous shape with a carbon content of 90% or more, and exhibits excellent properties especially at high temperatures. Unlike metals, which have lower mechanical strength at higher temperatures, they have the characteristic of increasing mechanical strength as temperature increases. They are considered to be the only materials that can be used up to 3,000 ° C in a non-oxidizing atmosphere with a low coefficient of thermal expansion. The carbon fiber is classified into PAN-based carbon fiber, rayon-based carbon fiber and pitch-based carbon fiber according to the raw material.

A carbon material, called a pre-cursor, is heated at a carbonization temperature of 800 to 1,500 占 폚 to produce carbon fibers having a diameter of 5 to 15 占 퐉 mainly composed of only carbon by pyrolysis of the organic material. The carbon fiber fabric 110 is manufactured through a process such as carding and sintering of the carbon fibers. Here, the carbon fiber fabric 110 refers to a sheet-like carbon fiber material that is not entangled by needle punching. It is preferable that the carbon fiber fabric 110 includes an ultrahigh modulus (UHM) carbon fiber having a tensile elastic modulus of 600 GPa or more and a very high modulus of elasticity. The carbon fiber fabric 110 has irregularly entangled carbon fibers.

Referring to FIGS. 2A to 2C, a plurality of carbon fiber fabrics 110 are bonded to each other by laminating carbon fiber fabrics 110 as needed, and the carbon fibers are entangled by needle punching, The felt 100 is produced. That is, the carbon fibers 110 pass through the thickness direction of the carbon fiber fabric 110 by needle punching, and the carbon fiber fabrics 110 are interfaced and fixed in a state of being laminated. Some carbon fibers constituting upper and lower carbon fiber fabrics 111 and lower carbon fiber fabrics 112 located in upper and lower portions of the stacked carbon fiber fabrics 110 are lowered or raised by needle punching, And is entangled with the carbon fiber fabric 113.

However, if the carbon fibers penetrate vertically through the surface of the carbon fiber felt 100, the carbon fibers penetrating vertically may act as a heat transfer path to reduce the incombustibility. Therefore, the vertically penetrating carbon fibers may be bonded to the carbon fiber felt 100 In the oblique direction so as to have an angle of 15 to 30 degrees with respect to the surface of the substrate. This can extend the heat transfer path and reduce the amount of heat dissipation. If the angle exceeds 30 °, the effect of reducing the heat radiation amount may be deteriorated. If the angle is less than 15 °, the needle punching operation is difficult and the fixing force between the fabrics may be deteriorated.

When the carbon fiber fabric 110 is mixed with the carbon fibers and the polypropylene fibers and then heat-treated to the mixed fibers at a temperature of 500 ° C or higher, only the polypropylene fibers entangled with the carbon fibers are selectively burned and removed, A plurality of gaps are formed between the electrodes. An air layer is formed along the gap to impart stretchability and heat insulation property, and far infrared rays and negative ions emitted from the coating layer 210 are easily radiated into the room.

At this time, the polypropylene fiber is preferably mixed with 5 to 10 parts by weight (not including 10 parts by weight) per 100 parts by weight of the carbon fiber. When the polypropylene fibers are mixed in an amount of less than 5 parts by weight, the gap between the carbon fibers is insufficient and the stretchability and the heat insulating property are deteriorated. When the polypropylene fibers are mixed in the amount of 10 parts by weight or more, the density of the carbon fibers may decrease and the flame- .

If a large number of gaps are formed in all the carbon fiber fabrics 110 constituting the carbon fiber felt 100, the incombustibility may be lowered or the fixing force between the fabrics may be lowered. Therefore, It is preferable that a gap be formed only in the single or plural intermediate carbon fiber fabrics 113 interposed between the upper carbon fiber fabric 111 and the lower carbon fiber fabric 112 located at the lower part.

The outer surface of the carbon fiber felt 100 is installed in a state exposed to the inside of the building, so that there is no need for a separate interior material and the outer skin is soft.

In general, the vibration of an electromagnetic wave electromagnetic field propagates to a wavelength, that is, a periodic change of an electric field and a magnetic field is transmitted as a wave, and an electric field and a magnetic field coexist with each other.

To this end, the electromagnetic shielding sheet 130 may be attached to the inner surface of the carbon fiber felt 100. 6A, a foil layer 140 made of aluminum foil may be further formed between the carbon fiber felt 100 and the electromagnetic shielding sheet 130, and the foil layer 140 may be formed between the carbon fiber felt 100 and the electromagnetic shielding sheet 130, Reinforced, and provides insulation and electromagnetic wave shielding effect.

6A and 6B, the electromagnetic wave shielding sheet 130 includes an elongated hole 153 formed therein, and a plurality of hollow tubes 152 formed on the outer surface of the electromagnetic shielding sheet 130 in which thin metal membranes 152 made of different conductive metals are formed in multiple layers. (150).

The hollow tube 150 is formed by sequentially depositing different conductive metals on a polypropylene fiber having a fine diameter of 5 to 10 탆 for a period of about 1 hour at a temperature of 75 to 85 캜 to obtain a total thickness of 10 to 20 탆 After the thin metal membranes 152 are formed, the polypropylene fibers are selectively burned and removed by applying heat of 500 DEG C or more for 1 to 2 hours in an inert atmosphere to form the elongated hole 153 therein. The multilayered hollow tube 150 can absorb electromagnetic waves.

The electromagnetic shielding sheet 130 is made of a resin composition comprising 20 to 30% by weight of an EVA resin, 5 to 10% by weight of a silicone resin, 50 to 60% by weight of dimethylformamide, 5 to 10% %, 0.5 to 1.5% by weight of methyl methacrylate, and 0.5 to 1.5% by weight of an acrylic emulsion resin.

The EVA resin is a polymer obtained by copolymerizing ethylene and a vinyl acetate monomer. The EVA resin is excellent in elasticity and flexibility and is excellent in durability and is not easily broken by an external impact, and 20 to 30% by weight is added in the present invention.

The silicone resin is contained in an amount of 5 to 10% by weight, and is excellent in the coating power and water repellency against the metal powder and the hollow tube, thereby preventing the metal component from contact with the outside air and moisture, and is excellent in heat resistance.

Dimethylformamide is added as a solvent in an amount of 50 to 60% by weight.

The metal powder includes 5 to 10% by weight of powder particles of a conductive metal, the hollow tube 150 contains 1 to 5% by weight, and is uniformly dispersed in the electromagnetic shielding sheet 130 to function as an electromagnetic wave shielding function.

Methyl methacrylate is added as a dispersant in an amount of 0.5 to 1.5% by weight to separate the metal powders and hollow tubes so that they can be dispersed evenly without aggregation.

The acrylic emulsion resin includes 0.5 to 1.5% by weight. There is a possibility that oxidation of the metal powder and the hollow tube occurs during the manufacturing process of the electromagnetic wave shielding sheet 130 or in the salt water spray test process after the production. Therefore, when a small amount of the acrylic emulsion resin is mixed with the electromagnetic shielding sheet 130, the corrosion resistance and the weather resistance are increased, thereby preventing the metal component from being oxidized.

In addition, it is necessary to prevent the oxidation of the metal contained in the electromagnetic wave shielding sheet 130 during use after the incombustible building interior material 1 is installed. That is, since the metal powder made of the conductive metal and the hollow tube are oxidized to form an oxide film and lose conductivity, it is preferable that the metal oxidation prevention sheet 160 is further attached to both sides of the electromagnetic wave shielding sheet 130 .

For this purpose, the metal oxidation preventing sheet 160 may be formed of a mixture of 5 to 15 wt% of graphene oxide, 30 to 45 wt% of dimethylformamide, 40 to 55 wt% of tetrahydrofuran, 0.5 to 1.5 wt% of alkylbenzenesulfonate, And 0.5 to 1.5% by weight of an alcohol acrylate.

Graphite is a structure in which carbon layers are arranged in layers like honeycomb hexagonal nets. One layer of graphite is called graphene, and these graphenes are atoms in which carbon atoms are connected by SP ² bonds, And the carbon atom is a hexagonal structure.

Graphene oxide is a plate-shaped carbon material produced by acid treatment of graphite and has many functional groups. The oxidizing groups on the surface generated through the acid treatment process naturally form hydrogen bond with H ₂ O, Lt; / RTI > slurry.

The graphene oxide used in the present invention is obtained by removing slurry and then removing moisture, and is contained in an amount of 5 to 15% by weight. When such a graphic oxide is applied, it functions to prevent oxidation of the metal. When the graphene oxide content is less than 5% by weight, the antioxidant effect is lowered and is not uniformly coated. When the graphene oxide content is more than 15% by weight, the graphene oxides are aggregated with each other to reduce the oxidation preventing effect by the coating. Since the method for producing graphene oxide is already known, its manufacturing method will be omitted.

Dimethylformamide and tetrahydrofuran are used as a solvent, and each contains 30 to 45% by weight and 40 to 55% by weight, respectively. These solvents are not well denatured and increase the dispersibility of graphene oxide. When the content of dimethylformamide is less than 30% by weight, the dispersibility of the graphene oxide may be lowered and the graphene oxides may be aggregated with each other. If the content of dimethylformamide is more than 45% by weight, the graphene oxide concentration may decrease and the coating effect may decrease.

The alkylbenzenesulfonic acid salt is added in an amount of 0.5 to 1.5% by weight to function as a stable emulsifier, increase dispersibility, and have a rust-preventive function. The butyl alcohol acrylate is added in an amount of 0.5 to 1.5% by weight to increase the dispersibility of the graphene oxide.

The thermoplastic elastic sheet 200 is made of a thermoplastic elastomer (TPE) and is often called an elastomer, and is bonded to one side of the carbon fiber felt 100. Thermoplastic Elastomer (TPE) has both rubber and plastic properties, so it is harder than rubber, more elastic than plastic, excellent in restoring force, excellent sound insulation to cut off noise, absorbs external impact, Adhesion with other materials is increased.

To this end, the thermoplastic elastic sheet 200 comprises 20 to 60% by weight of a polyolefin resin, 30 to 70% by weight of EPM rubber, 0.5 to 2% by weight of carbonylbiscaprolactam, 0.5 to 2% by weight of dicyclohexylcarbodiimide, 1 to 5% by weight of tetrahydrofurfuryl methacrylate, 0.5 to 3% by weight of dipropylene glycol diacrylate, 0.5 to 3% by weight of 1,6-hexanediol diacrylate, N, N'- 0.5 to 3% by weight of stearic acid, 0.5 to 1.5% by weight of stannic chloride, and 0.1 to 1.0% by weight of p, p'-oxybisbenzenesulfonylhydrazide.

The polyolefin-based resin imparts elasticity, improves rigidity and heat resistance, and improves the flowability of the elastomer due to its low viscosity when mixed with EPM rubber. As such polyolefin-based resins, isotactic polypropylene, ethylene-propylene copolymer and the like can be used. It is preferable that the polyolefin resin is contained in an amount of 20 to 60% by weight. If it is less than 20% by weight, the flowability and heat resistance may be deteriorated. If it exceeds 60% by weight, the elasticity and flexibility of the elastomer become inferior, .

The EPM rubber is an ethylene-propylene copolymer rubber, and an ethylene-propylene copolymer rubber can be used. The EPM rubber has elasticity and exhibits elasticity and flexibility. The EPM rubber is preferably contained in an amount of 30 to 70% by weight. If it is less than 30% by weight, elasticity and flexibility of the elastomer may be deteriorated. If it exceeds 70% by weight, heat resistance and flowability may be deteriorated, .

The carbonylbiscaprolactam is added to improve the heat resistance of the thermoplastic elastic sheet 200 without deteriorating heat, so as to increase the resistance against heat that can be transmitted through the carbon fiber felt 100 during a fire. The carbonylbiscaprolactam is preferably contained in an amount of 0.5 to 2% by weight.

Tetrahydrofurfuryl methacrylate is added in an amount of 1 to 5% by weight, and functions as a diluent, thereby enhancing adhesion.

Dipropylene glycol diacrylate and 1,6-hexanediol diacrylate are each included as a crosslinking agent in an amount of 0.5 to 3% by weight, respectively. The molecular sieve may be interconnected to form a polymer, and the crosslinking density may be increased to enhance mechanical properties have.

The N, N'-m-phenylene dimaleimide is contained in an amount of 0.5 to 3% by weight as a crosslinking aid, which is highly reactive so that a rapid crosslinking reaction can take place.

Stannus chloride is contained in an amount of 0.5 to 1.5% by weight, which increases the chemical reaction rate and promotes crosslinking to activate crosslinking.

The p, p'-oxybisbenzenesulfonylhydrazide is contained in an amount of 0.1 to 1.0% by weight and functions as a foaming agent.

In addition, the thermoplastic elastic sheet 200 is coated with a coating layer 210 containing a mixture of loess powder and carbon black powder, and then an adhesive sheet 300 is formed on the coating layer 210 to bond with the carbon fiber felt 100.

The coating layer 210 may contain 50 to 70 parts by weight of the white coal powder, 5 to 10 parts by weight of the pine needle powder, 150 to 200 parts by weight of the ion exchange water, 30 to 50 parts by weight of the aqueous polyurethane resin, 0.5 to 1 part by weight of silvadodiimide and other additives.

The loess is composed of silica, alumina, iron powder, magnesium, sodium, potassium and the like, and radiates a large amount of far-infrared rays. The loess is composed of a honeycomb structure and has a multi-layer structure with numerous spaces. , Humidity control ability, deodorization function, so it is beneficial to health and environment in real life. These clay lozes are included in the body to protect the health of the residents and non-energetic, unpleasant odors can be reduced to a pleasant and safe life is possible.

Charcoal is a charcoal made by solid wood such as oak wood as a raw material and progressing carbonization more than charcoal. During the manufacturing process, the bark of charcoal almost disappears and the surface is white due to ash. The carbon content is 90 to 95%, the ash content is about 2%, and contains a trace amount of water. Such a flour is composed of porous structure, contains many minerals, absorbs odor and moisture, generates anions to purify air, and emits far-infrared rays. And 50 to 70 parts by weight per 100 parts by weight of the loess powder.

The pine pine powder may be added in an amount of 5 to 10 parts by weight per 100 parts by weight of the loess powder, and the pine pine powder may be deodorized, preserved and antibacterialized to increase the durability of the interior material.

The ion-exchanged water is high-quality water which is in the range of 150 to 200 parts by weight per 100 parts by weight of the loess powder and which is close to pure water from which inorganic salts in water are removed for industrial water, beverage, etc., and obtained using an ion exchange resin Through these operations, cations and anions are removed, and yellowing powder, pellet powder, pine powder, aqueous polyurethane resin, etc. are mixed with the ion exchange water without affecting the action of other components.

The aqueous polyurethane resin is added to the thermoplastic elastic sheet 200 in an amount of 30 to 50 parts by weight per 100 parts by weight of the yellow loose powder and acts as a binder. The aqueous polyurethane resin has water resistance, heat resistance and excellent rebound resilience, The vibration can be reduced and 0.5 to 1 part by weight of dicyclohexylcarbodiimide per 100 parts by weight of the yellow loam is added as a hardening agent and stabilized by using other additives.

The adhesive sheet 300 is applied to both sides of the thermoplastic elastic sheet 200 so that the carbon fiber felt 100 and the heat insulating member 400 are bonded to each other.

The adhesive sheet 300 may be formed by mixing a silicate mixture with 5 to 10 parts by weight of a mineral fiber and 5 to 10 parts by weight of a curing agent per 100 parts by weight of a silicate mixture.

At this time, the silicate mixture may be composed of 30 to 40 wt% of sodium silicate, 20 to 30 wt% of potassium silicate, 20 to 30 wt% of lithium silicate, 5 to 10 wt% of colloidal silica, and 1 to 5 wt% of ion exchange water.

The sodium silicate, potassium silicate, and lithium silicate provided as the basic liquid phase receptors of the silicate mixture are non-toxic, non-flammable, non-toxic in the aqueous phase and contained in the adhesive sheet to provide a hard and firmly adherent inorganic bond to the loess powder of the coating layer 210 do.

In addition, the mineral fiber includes 5 to 10 parts by weight per 100 parts by weight of the silicate mixture. It prevents cracking of the adhesive sheet during the drying and curing process, secures thickening and flexibility, and provides a predetermined strength.

7, the heat insulating member 400 includes a fibrous web 410 which is bonded to the thermoplastic elastic sheet 200 through an adhesive sheet 300 and includes meltblown microfine fibers made of a thermoplastic resin, And a nonwoven fabric 420 formed on both sides of the web 410.

The fibrous web 410 is produced by the fibrous web layer producing apparatus 10 shown in Fig. First, the thermoplastic resin is metered into the extruder 11, the additive is put into the kneader, the kneaded mixture is melted by the pressure applied by the heat, frictional heat and screw rotation applied through the thermal jacket and extruded into the string, And then passes through dozens of orifices 13 to spin the fibers toward the collector 17. At this time, high-temperature and high-speed compressed air is injected from the nozzle 14 provided inside the spinning band 12 to collide with the fibers and to be blown into the atmosphere through the orifices 13 to form meltblown microfibers 20 ) Can be formed. A fiber feeder 15 for feeding fibers to the lower side of the spinning band 12 is provided and the fiber feeder 15 feeds the staple fibers 30 to a position where the meltblown microfibers 20 are radiated, A fibrous web 410 is produced.

Such air blending is made by mixing 60 to 80% of meltblown microfine fibers 20 by weight and 20 to 40% of staple fibers 30 by weight. As described above, if the staple fiber 30 is less than 20% in the transmitting web 410, the recovery rate against the pressing force may be lowered. If the staple fiber 30 exceeds 40% in the fiber web 410, ) Layer is not formed well and the air-blending is not performed well, so that the bonding strength can be weakened.

The air-blended fibers are deposited on the collector 17 without passing through or in the form of a deforming device 16 and are continuously and horizontally and vertically stacked to form a composite fibrous web 410 of tangled horizontal and vertical layers And the structure and cross-section of such a fibrous web 410 are shown in Figs. 5A and 5B. The collector 17 may be a rotating drum, a moving belt, or the like, and may control the rotation speed of the collector 17 to control the thickness of the fiber web 410. That is, if the rotating speed of the collector 17 is set to a low speed, the fibrous web 410 is formed thick, and if the rotating speed of the collector 17 is made high, the thickness of the fibrous web 410 becomes thin. The air-blended meltblown microfibers 20 and staple fibers 30 collected on the collector 17 are bonded together to form a fibrous web 410 while being cooled.

The meltblown microfibers 20 may be made of a thermoplastic resin such as polyethylene, polypropylene, polyester, polyamide, polycarbonate, etc., and may be prepared by adding a proper amount of additives such as a heat stabilizer, an antioxidant, a flame retardant, And may be provided so that a far-infrared ray emitting material such as ceramic particles is added to radiate a far-infrared ray that is beneficial to the human body.

Further, the meltblown microfine fibers 20 are 50 to 60% by weight of microfine fibers having an average diameter of 1 to 3 占 퐉, and 20 to 30% of them have an average diameter of 0.3 to 1 占 퐉 (not including 1) And 10 to 20% may be made of an ultrafine fiber having an average diameter of 0.1 to 0.3 mu m (not including 0.3). As described above, since the layered structure of the fibrous web is well developed and the volume feeling is increased by composing the microfiber and the microfibers having various sizes to be blended together, the fibrous web layer can be well formed, the high density structure can be maintained, Many air layers and microfibers are intertwined between the fibrous layers of the fibrous layer, so that the number of fiber strands increases and the surface area increases in the same volume as the aggregation strength increases, so that the heat insulation and the sound absorption performance can be greatly improved.

The nonwoven fabric 420 is formed on both sides of the fibrous web 410 to protect the fibrous web 410 from the outside and includes 30 to 40% by weight of cotton, 30 to 40% of cellulose and 20 to 30% of polyester And is formed by forming and bonding fibers in a parallel or negative orientation to form a thin felt web. Line method in which the nonwoven fabric 420 unwound by another feeding device is bonded to the absorbent web 410, and then the interlayer adhesion is completed by passing the nonwoven fabric 420 through a calender roll. However, the nonwoven fabric 420 may be formed by an ultrasonic bonding in an out- It is preferable that the adhesive agent is excellent in adhesion, is environmentally friendly, has no wrinkle or wrinkle, is free from damage to the fabric, can be rapidly adhered, and the working efficiency is increased.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the fire-resistant building interior material 1 according to the present invention will be described in detail.

[Description 1]

The upper and lower carbon fiber fabrics (111 and 112) were prepared with ultra high modulus (UHM) carbon fiber, and the ultra high modulus (UHM) carbon fiber and the polypropylene fiber were mixed. The mixed fibers were heat treated at 550 ° C. for 1 hour To produce a middle carbon fiber fabric 113 by burning only polypropylene fibers. Subsequently, an intermediate carbon fiber fabric 113 is laminated between the upper and lower carbon fiber fabrics 111 and 112, and the carbon fibers are entangled by needle punching to bind a plurality of carbon fiber fabrics, 100).

Subsequently, a polyolefin-based resin was added in an amount of 35 wt%, EPM rubber 55 wt%, carbonylbiscaprolactam 1 wt%, tetrahydrofurfuryl methacrylate 3 wt%, dipropylene glycol diacrylate 2 wt%, 1,6-hexane 1.5% by weight of diol diacrylate, 1% by weight of N, N'-m-phenylenedimaleimide, 1% by weight of stannic chloride, and 0.5% by weight of p, p'-oxybisbenzenesulfonylhydrazide A 10 mm thick thermoplastic elastic sheet 200 prepared by curing is prepared.

Then, a silicate mixture composed of 36 wt% of liquid sodium silicate, 27 wt% of liquid phase potassium silicate, 27 wt% of liquid lithium silicate, 7 wt% of colloidal silica and 3 wt% of ion exchange water, 8 parts by weight of a fiber and 7 parts by weight of a curing agent were mixed to prepare a composition of the adhesive sheet (300).

In addition, a fibrous web was produced by the fibrous web layer producing apparatus 10 shown in Fig. Specifically, a thermoplastic resin composition consisting of a homopolymer H7914 polymer resin manufactured by LG Chemical Co., Ltd., having an application index (230 ° C) of 1400 g / 10 min, a UV stabilizer, and an oxidative stabilizer was added to the extruder. The thermoplastic resin composition was kneaded, heated and compressed by rotating the extruder 80 times per minute. The kneaded composition was then spun radially and passed through an orifice to spin the fibers towards the collector. During this spinning, the fibers collide with the high-temperature and high-speed compressed air injected from the injection port provided symmetrically in the inside of the spinning bed to form meltblown microfibers made of polypropylene having an average fiber thickness of 2 μm. At this time, the polyester fiber staple fiber (fineness 5 denier) is supplied to the position where the meltblown microfibers are radiated by using the fiber feeder installed on the lower side of the spinneret so that the meltblown microfiber coming out of the orifice and the weight ratio of 3: 7 Fused. Half of the mixed fibers reach the collector without going through the deformation device and are stacked in the horizontal direction and the other half are vertically deformed in the direction of the fiber through the deformation device and stacked in the vertical direction on the laminated fibers in the horizontal direction, A fiber web having a weight of 600 g / m < 2 > was prepared and wound on a winder. Then, a sheet-shaped nonwoven fabric was laminated on both sides of the fibrous web by ultrasonic bonding to prepare a heat insulating member 400 having a thickness of 30 mm.

The composition of the adhesive sheet 300 was applied to both sides of the thermoplastic elastic sheet 200 and the carbon fiber felt 100 and the heat insulating member 400 were adhered and bonded to each other to manufacture the interior member 1 of the incombustible structure.

[Advantage 2]

The inner surface of the thermoplastic elastic sheet 200 was coated with a mixture of yellow loose powder, 60 parts by weight of a flame-retardant powder per 100 parts by weight of loess powder, 8 parts by weight of pine powder , 180 parts by weight of ion-exchanged water, 45 parts by weight of an aqueous polyurethane resin and 0.7 parts by weight of dicyclohexylcarbodiimide were coated and cured to form a coating layer 210. Then, An adhesive sheet 300 was formed and the carbon fiber felt 100 was adhesively bonded to produce the interior material 1 of the fireproof structure.

[Practical Example 3]

The electromagnetic interference shielding sheet 130 is formed on the inner surface of the carbon fiber felt 100 by manufacturing the incombustible-construction interior material 1 with the same constitution and conditions as those of the above- That is, a mixture of 25 wt% of EVA resin, 7.5 wt% of silicone resin, 56 wt% of dimethylformamide, 7 wt% of copper powder, 3 wt% of hollow tube, 0.8 wt% of methyl methacrylate and 0.7 wt% of acrylic emulsion resin And then cured on the inner surface of the carbon fiber felt 100 to form the electromagnetic wave shielding sheet 130.

At this time, the hollow tube was immersed in electroless plating to polypropylene fibers having a fine average diameter of 6 mu m at a temperature of 80 DEG C for 1 hour in a plating solution, nickel and cobalt were sequentially coated And then heat-treated in an inert gas atmosphere at a temperature of 700 ° C. for about 1 hour to selectively remove the polypropylene fibers to form elongated and thin elongated holes.

The composition of the adhesive sheet 300 is applied to both sides of the thermoplastic elastic sheet 200 and the carbon fiber felt 100 on which the electromagnetic wave shielding sheet 130 is formed is adhered to the heat insulating member 400, To prepare an interior material (1).

[Description 4]

The inner surface of the electromagnetic interference shielding sheet 130 is coated with the metal oxidation preventing sheet 160 while the inner surface of the electromagnetic interference shielding sheet 130 is coated with the inner surface of the electromagnetic interference shielding sheet 130 by the same constitution and conditions as those of the above- That is, after mixing 10% by weight of graphene oxide, 40% by weight of dimethylformamide, 48% by weight of tetrahydrofuran, 1.0% by weight of alkylbenzenesulfonate and 1.0% by weight of butyl alcohol acrylate, And the metal oxidation preventing sheet 160 is formed.

The carbon fiber felt 100 in which the composition of the adhesive sheet 300 is applied to both sides of the thermoplastic elastic sheet 200 and the electromagnetic wave shielding sheet 130 and the metal oxidation preventing sheet 160 are formed and the heat insulating member 400 ) Were adhered and bonded to each other to produce an incombustible building interior material (1).

[Comparative Example 1]

A thermoplastic resin composition consisting of homopolymer H7914 polymer resin of LG Chemical Co., Ltd., having a melt index (230 ° C) of 1400 g / 10 min, an ultraviolet stabilizer and an oxidative stabilizer, was fed into an extruder. The thermoplastic resin composition was kneaded, heated and compressed by rotating the extruder 80 times per minute. The kneaded composition was then spun radially and passed through an orifice to spin the fibers towards the collector. During this spinning, the fibers collide with the high-temperature and high-speed compressed air injected from the injection port provided symmetrically inside the spinning bed to form meltblown microfibers made of polypropylene having an average fiber thickness of 3 μm. The spun meltblown microfine fibers were laminated to the collector. The laminated fiber webs were wound on a winding machine, and a 15 g / m < 3 > nonwoven fabric was laminated on both sides to prepare an interior material having a total weight of 600 g / m 2 and a thickness of 30 mm.

[Comparative Example 2]

A thermoplastic resin composition consisting of homopolymer H7914 polymer resin of LG Chemical Co., Ltd., having a melt index (230 ° C) of 1400 g / 10 min, an ultraviolet stabilizer and an oxidative stabilizer, was fed into an extruder. The thermoplastic resin composition was kneaded, heated and compressed by rotating the extruder 80 times per minute. The kneaded composition was then spun radially and passed through an orifice to spin the fibers towards the collector. During this spinning, the fibers collide with the high-temperature and high-speed compressed air injected from the injection port provided symmetrically inside the spinning bed to form meltblown microfibers made of polypropylene having an average fiber thickness of 3 μm.

At this time, staple fibers (fineness of 5 denier) made of polyethylene material were fed to the meltblown microfibers through the fiber feeder provided at the lower side of the spinning bed to be mixed with the meltblown microfibers coming out of the orifices so as to have a weight ratio of 7: 3 . The air-blended and fiber-mixed fibers were laminated on the collector. The laminated fiber web was wound on a winder, and a 15 g / m < 3 > nonwoven fabric was laminated on both sides to prepare an interior material having a total weight of 600 g / m 2 and a thickness of 30 mm.

[Test result]

The pressurization recovery rate, the aggregation strength, the sound absorption rate, the incombustibility, the heat resistance value and the electromagnetic wave absorbing ability of the interior samples of Inventive Examples 1 to 4 and Comparative Examples 1 and 2 were measured and the results are shown in the following Tables 1 to 5, respectively.

Five samples of 100 mm x 100 mm square samples were taken at arbitrary positions of the sample, 150 g of a pressure plate having a size of 120 mm x 120 mm was pressurized to 0.1 kPa, Measure the thickness before compression of each sample. The compression of the sample is carried out by weighing 500 g and 40 pie on a steel plate of 100 mm × 100 mm × 0.8 mm, leaving it at 120 ± 2 ° C. for one hour and measuring the thickness after compression. After calculating the thickness before compression and the rate of change after compression, the average value is represented as a representative value.

The aggregation strength was determined by extracting the fibrous web from each sample and pulling both surfaces of the fibrous web at a rate of 25 mm per minute according to GMW 14695 to determine the maximum load at which the aggregate was destroyed.

The absorption coefficient was tested by reverberation method according to KS F 2805, and the sound absorption rate was measured.

In the incombustible horizontal tunnel with length of 7.3m × width 0.056m × height 0.305m according to ASTM E84 (Method of Test of Surface Burning Characteristics), each sample installed on the ceiling of the tunnel had an output of 89kw In the state of being exposed to the flame of the gas burner ejected by the burner. The results of the carbonization area and the smoke generation test are shown in Table 4. In addition, the evaluation in Table 4 was evaluated according to the following criteria. In accordance with the provisions of the National Fire Protection Association Life Safety Code 101, Section 6-5.3, "Interior Wall and Ceiling Finish Classification" of the United States Fire Protection Association (NFPA). According to this standard, according to ASTM E84, the flammability of walls and ceiling coverings of building interior walls are evaluated according to the Carbonation Area Test Index (Smoke Development Value) and Smoke Development Test Value (ASTM E84) As shown in Fig.

* Class A: Carbonization area test index 0 ~ 25, smoke generation test value 0 ~ 450

* B grade: Carbonization area test index 26 ~ 75, smoke generation test value 0 ~ 450

* C rating: Carbonization area test index 76 ~ 200, smoke generation test value 0 ~ 450

The thermal resistance (clo) was measured according to KS K 0466.

The absorbance was measured by a network analyzer.

[Table 1] Pressure Recovery Rate

[Table 2] Roundup strength

[Table 3] Sound absorption rate

[Table 4] Non-incompatibility test result

[Table 5] Thermal Resistance

[Table 6] Electromagnetic wave absorption ability

As shown in the above Tables 1 to 6, as a result of the test, the interior material according to Inventive Examples 1 to 4 of the present invention had an increased pressure recovery rate and an excellent aggregation strength as compared with Comparative Examples 1 and 2, It was confirmed that the thermal resistance value was greatly improved.

In other words, the interior material according to the present invention is characterized in that a number of air layers and microfiber yarns are intertwined between the fibrous layers of the net structure to increase the aggregation strength, to crosslink the fibrous web, the carbon fiber felt to be made of ultra- The elasticity and the restoration ratio are increased, the number of fiber strands is increased in the same volume of the fiber web to increase the surface area, and the adiabatic property, the sound absorption property and the sound insulation are improved due to the carbon fiber felt and the thermoplastic elastic sheet.

In Examples 1 to 4, the carbonization area and the generation of smoke were hardly generated due to the carbon fiber felt made of the super-high-elasticity carbon fiber, and the carbon fibers corresponded to the A grade, while the Comparative Examples 1 and 2 corresponded to the C grade there was.

In the case of Inventive Examples 3 and 4, the electromagnetic wave shielding sheet was formed to greatly increase the electromagnetic wave absorbing ability. Particularly in Inventive Example 4, a metal oxidation preventing sheet was provided and numerically did not appear in the test results. However, So that the electromagnetic wave shielding efficiency can be maintained and the durability can be increased.

As a result, the incombustible building interior material (1) according to the present invention is lightweight and lightweight, and does not burn or smoke due to its excellent nonflammability, increases the energy efficiency of the building due to excellent heat insulation and has excellent sound absorption, sound insulation and electromagnetic interference Not only a separate finishing material is required but also static electricity is prevented and stretchability is excellent so that it is easily restored and is not deformed well, the external touch is smooth, and the durability is improved.

The present invention is not limited to the above-described embodiments. Anything having substantially the same constitution as the technical idea described in the claims of the present invention and achieving the same operational effect is included in the technical scope of the present invention.

1. Non-burned building interior material
100. Carbon fiber felt
110. Carbon Fiber Fabric
111. Top carbon fiber fabric
112. Lower carbon fiber fabric
113. Medium carbon fiber fabric
120. Carbon fiber
130. Electromagnetic wave shielding sheet
140. Foil layer
150. Hollow tube
152. Metal Membrane
153. Stall Hole
160. Metal oxidation prevention sheet
200. Thermoplastic Elastic Sheet
210. Coating layer
300. Adhesive sheet
400. Insulating member
410. Fiber Web
420. Nonwoven fabric
P. needle punching machine
N. Needle

Claims (10)

A carbon fiber felt formed by binding a plurality of carbon fiber fabrics by entangling carbon fibers by needle punching; A thermoplastic elastic sheet made of a thermoplastic elastomer (TPE) bonded to a carbon fiber felt; A heat insulating member composed of a fibrous web bonded to the thermoplastic elastic sheet and including meltblown microfine fibers made of a thermoplastic resin and a nonwoven fabric formed on both sides of the fibrous web; And an adhesive sheet applied on both sides of the thermoplastic elastic sheet to bond and adhere the carbon fiber felt and the heat insulating member,
The carbon fiber fabric interposed between the upper and lower carbon fiber fabrics constituting the carbon fiber felt is formed by mixing carbon fibers and polypropylene fibers and then performing heat treatment to remove the polypropylene fibers and to form gaps between the carbon fibers The interior of the fireproof building is characterized by.
A carbon fiber felt formed by binding a plurality of carbon fiber fabrics by entangling carbon fibers by needle punching; A thermoplastic elastic sheet made of a thermoplastic elastomer (TPE) bonded to a carbon fiber felt; A heat insulating member composed of a fibrous web bonded to the thermoplastic elastic sheet and including meltblown microfine fibers made of a thermoplastic resin and a nonwoven fabric formed on both sides of the fibrous web; And an adhesive sheet applied on both sides of the thermoplastic elastic sheet to bond and adhere the carbon fiber felt and the heat insulating member,
Wherein the electromagnetic shielding sheet includes a plurality of hollow tubes having elongated holes formed therein and having metal membranes made of different metals formed on the outer surface thereof in multiple layers, The hollow tube is formed by sequentially forming metal membranes made of metal on polypropylene fibers and then heating the polypropylene fibers to melt the polypropylene fibers so that a long hole is formed therein,
Wherein the electromagnetic shielding sheet comprises 20 to 30 wt% of EVA resin, 5 to 10 wt% of a silicone resin, 50 to 60 wt% of dimethylformamide, 5 to 10 wt% of a metal powder, 1 to 5 wt% of the hollow tube, 0.5 to 1.5% by weight of methacrylate, and 0.5 to 1.5% by weight of acrylic emulsion resin.
3. The method of claim 2,
A metal oxidation preventing sheet for preventing oxidation of metal is attached and formed on both sides of the electromagnetic wave shielding sheet,
Wherein the metal oxidation preventive sheet comprises 5 to 15% by weight of graphene oxide, 30 to 45% by weight of dimethylformamide, 40 to 55% by weight of tetrahydrofuran, 0.5 to 1.5% by weight of alkyl benzene sulfonate, 0.5 to 1.5% Non-burnable building interior material containing% by weight.
A carbon fiber felt formed by binding a plurality of carbon fiber fabrics by entangling carbon fibers by needle punching; A thermoplastic elastic sheet made of a thermoplastic elastomer (TPE) bonded to a carbon fiber felt; A heat insulating member composed of a fibrous web bonded to the thermoplastic elastic sheet and including meltblown microfine fibers made of a thermoplastic resin and a nonwoven fabric formed on both sides of the fibrous web; And an adhesive sheet applied on both sides of the thermoplastic elastic sheet to bond and adhere the carbon fiber felt and the heat insulating member,
Wherein the thermoplastic elastic sheet comprises 20 to 60% by weight of a polyolefin resin, 30 to 70% by weight of EPM rubber, 0.5 to 2% by weight of carbonylbiscaprolactam, 1 to 5% by weight of tetrahydrofurfuryl methacrylate, 0.5 to 3 wt% of diacrylate, 0.5 to 3 wt% of 1,6-hexanediol diacrylate, 0.5 to 3 wt% of N, N'-m-phenylene dimaleimide, 0.5 to 1.5 wt% of stannic chloride, and 0.1 to 1.0 wt% of p, p'-oxybisbenzenesulfonyl hydrazide.
5. The method according to any one of claims 1 to 4,
Wherein the carbon fiber fabric comprises an ultra-high modulus type (UHM) carbon fiber.

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