KR20220091106A - Noise and vibration reduction material using scrubber cucumber - Google Patents

Abstract

The present invention relates to a noise reducing material using loofah, and it can exhibit excellent noise and vibration reduction effects despite its thin thickness, including loofah fiber, which is a natural material harmless to the human body.
In addition, by including the antibacterial coating layer, it is possible to improve the antibacterial effect against various bacteria that may occur on the wallpaper or flooring of the apartment house.

Description

Noise reduction material using loofah cucumber {NOISE AND VIBRATION REDUCTION MATERIAL USING SCRUBBER CUCUMBER}

The present invention relates to a noise reducing material using a loofah cucumber. In more detail, it contains loofah fiber, a natural material that is harmless to the human body, so it can exhibit excellent noise and vibration reduction effects, and by including an antibacterial coating layer, it has an antibacterial effect against various bacteria that may occur on the wallpaper or flooring of a multi-family house. It relates to a noise reduction material using a loofah cucumber having a

With the development of industry, the mass distribution of building structures, and the increase in living standards and living consciousness, the demand for a comfortable working environment and living environment is increasing day by day. In particular, as the housing structure changes from single-family houses to multi-family houses, it is possible to frequently hear the news of disputes between the upper and lower generations due to the noise problem between floors in the apartment house through broadcast news or newspaper articles. is emerging as a social problem.

The inter-floor noise of a building includes the sound of running, walking, dropping objects, hammer sounds, water supply and drainage pipes, toilet sewer pipes, etc. There is noise.

In the case of apartment houses or multi-story buildings, most of the air transmission noise is blocked by the concrete slab structure, but when an impact or vibration is directly applied to the floor due to a person walking or dropping an object from the upper floor, it becomes a solid transmitted noise. It has the property of radiating through floor slabs, ceilings, or walls into lower floors or adjacent households with little or no attenuation.

Therefore, the main target of the sound isolation system is solid-transmission noise, which is a high-pitched, lightweight impact sound that generates high-frequency components such as the sound of a bowl or object dropping or a chair moving, and low-frequency such as walking of an adult or jumping of a child. It is divided into the low-range weight impact sound that produces the sound of the component.

In Korea, where people live a sedentary lifestyle, not only light impact sound but also heavy impact sound are major causes of noise pollution, and a material for reducing impact sound from buildings is particularly required to prevent its propagation.

More specifically, most of the Korean apartment houses are wall-type structures in which walls and floors made of concrete having a thickness of 120 to 200 mm are connected to each other to form a single building structure. Since this concrete structure is rigid and closed due to the characteristics of the material, it has sufficient blocking performance against air transmission sounds such as speech sounds and TV sounds. However, in the case of a solid transmitted sound generated when an impact is applied to the concrete surface, since concrete has a very small vibration damping ability, it has the property of being easily transmitted to adjacent generations.

In order to solve this problem, various methods for sound insulation between floors have been recently proposed.

Patent Laid-Open Publication No. 10-2005-45164 discloses a noise reduction material for apartment house noise prevention, which is a noise reduction material for an apartment house, in which a rubber chip layer, a polyethylene pad layer, and an ethylene vinyl acetate chip layer are sequentially stacked to form a triple composite structure. .

Such a noise reduction material has an excellent noise absorption rate and excellent thermal insulation performance, but cannot completely insulate sound due to a narrow noise absorption area.

Furthermore, as a method for reducing impact sound, a method of applying an impact sound reduction cushioning material has been recently utilized, and glass wool, rock wool, waste tire chips, fiber, etc. are used as such cushioning materials.

However, in the case of glass wool and rock wool, dust harmful to the human body during cutting, transportation, and construction can cause fatal disorders, as well as cause structural stability problems due to subsidence caused by local instantaneous and long-term loads. can do. In addition, there is a problem in that the lightweight concrete constructed in the wet method, which is a domestic construction method, permeates between glass wool or rock wool and does not exert a noise reduction effect.

Waste tire crushing chips are used as shock sound buffering materials in terms of recycling waste resources, but they do not show satisfactory impact sound reduction performance. Insufficient stability and instability of curing due to penetration of lightweight concrete during lightweight concrete pouring has problems such as cracks in the mortar layer.

In addition, there is a plan to increase the rigidity of the slab of the building as a measure to reduce the floor impact sound, which is not realistic due to the problem of the thickness of the slab being thick, the floor height being lowered, and the problem of increasing the load of the building.

Accordingly, in order to solve the above problems, the present applicant uses loofah cucumber, a natural material that is harmless to the human body, and can exhibit improved noise and vibration effects even with a thin thickness compared to existing noise reducing materials, as well as indoor and outdoor temperature difference It led to the invention of a noise reduction material using loofah cucumbers that can exhibit antibacterial effects against harmful bacteria such as mold bacteria that may be caused by .

KR 10-2005-45164 A KR 10-0707360 B1

It is an object of the present invention to provide a noise reducing material using loofah, which contains loofah, a natural material harmless to the human body, in a sound absorbing layer, and has excellent noise and vibration reduction effects despite its thin thickness.

Another object of the present invention is to provide a noise reducing material using a loofah cucumber having an antibacterial effect on indoor harmful bacteria by including an antibacterial coating layer.

In order to achieve the above object, a noise reducing material using a loofah cucumber according to an embodiment of the present invention includes a surface layer; a sound-absorbing layer located on the lower side of the surface layer and including loofah fibers; a heat insulating layer located on the lower side of the sound-absorbing layer and made of semi-rigid foam or rigid foam to have a heat-insulating effect; and a waterproof layer disposed on the lower side of the heat insulating layer and having a metal layer formed on one side thereof.

The surface layer is selected from the group consisting of polyurethane-based resins, polyolefin-based resins, polystyrene-based resins, polyester-based resins, polyamide-based resins, polyacrylic-based resins, polymethacrylic-based resins, and mixtures thereof.

The sound-absorbing layer is formed by mixing a solvent, pulp fiber, binder material, expansion material, flame retardant material, and loofah fiber.

The heat insulating layer is selected from the group consisting of styrofoam, urethane foam, latex foam, silicone foam, polyvinyl acetate foam, and mixtures thereof.

The metal layer is formed by thermal fusion with a metal powder selected from the group consisting of aluminum (Al) powder, aluminum alloy powder, and mixtures thereof.

The surface layer is coated with an antibacterial coating composition, and the antimicrobial coating composition is fine powder shungite, fine powder illite, fine powder zeolite, fine powder elvanite, fine powder bentonite, fine powder diatomaceous earth, fine powder germanium, fine powder It contains an inorganic powder selected from the group consisting of loess, fine powder alum, fine powder jade, and mixtures thereof.

Wallpaper according to another embodiment of the present invention includes a noise reducing material using the loofah cucumber.

The flooring material according to another embodiment of the present invention includes a noise reducing material using the loofah cucumber.

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

In order to achieve the above object, a noise reducing material using a loofah cucumber according to an embodiment of the present invention includes a surface layer; a sound-absorbing layer located on the lower side of the surface layer and including loofah fibers; a heat insulating layer located on the lower side of the sound-absorbing layer and made of semi-rigid foam or rigid foam to have a heat-insulating effect; and a waterproof layer disposed on the lower side of the heat insulating layer and having a metal layer formed on one side thereof.

The surface layer is selected from the group consisting of polyurethane-based resins, polyolefin-based resins, polystyrene-based resins, polyester-based resins, polyamide-based resins, polyacrylic-based resins, polymethacrylic-based resins, and mixtures thereof.

The surface layer is made of a high-hardness resin and serves to disperse external impact, and when the thickness of the surface layer is too thin, this impact dispersing effect is low, and when the thickness is too thick, it is effective for dispersing the impact, In addition to increasing the weight of the noise reducing material, there is a disadvantage in that it is difficult to effectively block the impact sound. Accordingly, the surface layer preferably has a thickness of 0.2 to 2 mm.

In particular, in the case of a polyurethane-based resin, when a thermoplastic polyurethane containing an ether-containing polyester is used, the impact dispersing effect is excellent.

On the other hand, the properties of urethane vary according to the properties of polyol and isocyanate used as polyurethane raw materials. Among the polyols, there are ethers and esters, and esters are broadly classified into lactone-based and adipate-based polyols. The adipate-based polyol is obtained by polymerization of a polyfunctional carboxylic acid and a polyfunctional hydrogen compound.

Polyurethane using existing esters has advantages in terms of mechanical strength, processability, heat resistance, abrasion resistance, and price, but in terms of chemical resistance, elasticity, cold resistance, water resistance and specific gravity, polytetramethylene ether glycol (PTMG; polytetramethylene ether) It has the disadvantage of being inferior to glycol). The polyurethane in the present invention can compensate for the disadvantages of esters by using a polyol to which an ether molecular structure containing polytetramethylene glycol is included in the ester molecular structure as a raw material thereof.

On the other hand, the waterproof layer is in the form of a film, and is located on the lower side of the heat insulating layer, and prevents moisture from penetrating into the heat insulating layer and the sound absorption layer, thereby increasing the lifespan of the noise reducing material of the present invention.

Specifically, the waterproof layer is polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polypropylene (PP), polystyrene (PS), polyamide (PA), polycarbonate (PC) , to be any one selected from the group consisting of polyacrylonitrile (PAN), polyimide (PI), polyvinyl alcohol (PVA), ethylene vinyl alcohol (EVOH) and polyvinylidene chloride (PVDC), preferably poly It is defined as a propylene (PP) film in the form of a material having gas barrier properties and moisture barrier properties, and includes all types of materials that a person of ordinary skill in the art can use.

The sound-absorbing layer is formed by mixing a solvent, pulp fiber, binder material, expansion material, flame retardant material, and loofah fiber.

The sound-absorbing layer means a layer containing a sound-absorbing material (吸音材). Sound absorbing material (吸音材) is a building material used for the purpose of absorbing sound. The porous sound absorbing material has fine bubbles or microtubule-shaped holes formed on the surface and inside, and the sound energy is converted into thermal energy and absorbed due to friction caused by vibration of the air inside the hole by sound waves. do. And the plate-shaped sound-absorbing material obtains a sound-absorbing effect by consuming sound energy while the sound wave vibrates the plate. Such a sound-absorbing material is generally manufactured using cotton or pulp fiber as a main material in order to secure sound-absorbing performance. And, after adding an admixture such as a binder, a flame retardant, etc. to cotton or pulp fiber, it can be molded and cut into a predetermined shape and size to be used in the form of a panel.

As the solvent, water (cold water, hot water), alcohol, anhydrous or hydrated lower alcohols having 1 to 4 carbon atoms (methanol, ethanol, propanol and butanol, etc.), a mixed solvent of the lower alcohol and water, etc. may be used, but limited thereto it doesn't happen

The binder material serves as an adhesive for bonding the pulp fibers and various additive materials.

On the other hand, the expansion material, which can be referred to as a foaming agent, serves to form a plurality of fine pores for securing the sound-absorbing performance of the sound-absorbing layer.

Specifically, since the expandable material is included together with water, the volume expands and the density decreases as the expandable material holds water, thereby creating micropores inside. Therefore, it is possible to manufacture the sound absorbing material more simply and inexpensively by reducing the amount of material added compared to the sound absorbing material according to the prior art.

Specifically, carboxymethyl cellulose (CMC) may be used as the binder material of the present invention, and an epoxy resin may be used as the expansion material.

On the other hand, since the sound-absorbing layer is often used as a building material, it is important to have a flame retardancy. The flame retardant serves to improve the flame retardant performance, and flame retardants that have been widely used in the past include boric acid and ammonium polyphosphate. However, conventional flame retardants do not have sufficient flame retardancy, and there is a problem in that the amount of flame retardant added to ensure sufficient flame retardancy is increased.

The flame retardant of the present invention may be pentaerythritol (Pentaerythritol, PT) or ammonium polyphosphate (Ammonium Phosphate, APP). This has the advantage of being able to form a sound-absorbing layer having a reduced thickness, since it has superior flame retardant performance compared to the conventional flame retardant material, and can be used in a smaller amount than the conventional flame retardant material.

The types of the binder material, the expandable material, and the flame retardant of the present invention are not limited to the above-described examples, and those skilled in the art may use the binder material, the expandable material and the flame retardant material as the types of the binder material.

The loofah cucumber (Luffa cylindrica Roem.) is sponge-gourd in English, and as the English name suggests, the natural loofah has a sponge-like characteristic, which is due to the net-type fiber of the natural loofah. It is native to tropical Asia and was introduced to Korea from Japan or China. Stems are tendrils, green, branched, tendrils come out and wind up other objects. The leaves are palm-shaped, divided into 5 to 7 pieces, and have long petioles. The leaves at the bottom of the stem are shallow, but the leaves attached to the upper part are deeply divided. The flower is a plywood corolla that is divided into 5 parts and is yellow and hangs on the leaf axil and blooms in late summer. The inside of the flesh has developed mesh-shaped fibers, and black ripe seeds are contained inside.

On the other hand, if the mature fruit is soaked in water, the skin on the surface of the fruit will easily come off from the flesh. After that, the seeds and water are sucked and the sticky pulp is washed away, leaving only the fiber in the form of a net. The young fruits are edible, and the mature fibers are mainly used to make butts for axle refueling of railway vehicles, for cleaning ship engines and decks, for shoe soles, for women's hats, and for slippers and baskets. In oriental medicine, it is used to treat fever, fever, incontinence, enteritis, and indigestion.

In the present invention, since the loofah fiber is included in the sound-absorbing layer, it is possible to absorb noise generated by impact sound and the like, thereby improving the noise reduction effect.

Preferably, the sound-absorbing layer is based on 100 parts by weight of the solvent, 30 to 50 parts by weight of the pulp fiber, 1 to 5 parts by weight of the binder material, 1 to 5 parts by weight of the expansion material, 1 to 5 parts by weight of the flame retardant, and the It is formed by mixing 5 to 10 parts by weight of loofah fiber.

More preferably, the sound-absorbing layer may be formed to further include cypress wood fibers.

The Hemiptelea davidii is a deciduous broad-leaved arboreous tree belonging to the Rosaceae Elmaceae, and is native to Korea and Manchuria, and there is only one species in one genus in the East. It is a tall tree that loses its leaves in winter, grows to 15 to 30 m, and grows well in sunny places. The bark is grayish-brown or black-grey, and is deeply fissured vertically. There are many elongated thorns that have changed young branches on the branches. The leaves are alternate phyllotaxis, long oval or elliptical, with a sharp tip and serrated edges. The length is 1 to 6 cm, side veins are 8 to 15 pairs, and there are hairs on the veins on the back side of the leaves. In May, 1 to 4 pale yellow flowers bloom in leaf axils. The genus name Hemiptelea is a compound word of 'hemi' meaning half and 'ptelea' meaning wing. As a medicinal effect, the root bark of cypress tree is used to treat kidney stones by helping to actively diuretic and excreting urine. In addition, it is effective in removing swelling and has the effect of removing heat and inflammation caused by moisture. In addition, it is used to treat swelling (腫脹), sore throat (惡瘡) and angjeo (癰疽).

More specifically, the sound-absorbing layer is formed by further mixing 5 to 10 parts by weight of the cedar fiber with respect to 100 parts by weight of the solvent.

When the sound-absorbing layer of the present invention is formed by the above weight range, an excellent sound-absorbing effect and vibration-reducing effect against impact sound can be exhibited by the mixing action of active ingredients included in the additive, such as loofah fiber, pulp fiber, and cedar fiber. .

However, when mixing less than the weight range, the sound absorption and vibration reduction effect is insignificant, and when mixing exceeding the weight range, it acts on the expansion material to suppress the formation of micropores inside the sound-absorbing layer, and as a result, the sound absorption And there is a problem of reducing the vibration reduction effect.

The heat insulating layer is selected from the group consisting of styrofoam, urethane foam, latex foam, silicone foam, polyvinyl acetate foam, and mixtures thereof.

As the noise reduction material of the present invention is formed on the wall surface or the floor surface, the heat insulation layer can suppress a sudden change in temperature of the inner space by suppressing the heat exchange action between the inner space and the outer space, and preferably has an excellent heat insulation effect. In order to do this, the heat insulating layer may be made of semi-rigid foam or rigid foam.

The metal layer is formed by thermal fusion with a metal powder selected from the group consisting of aluminum (Al) powder, aluminum alloy powder, and mixtures thereof.

Specifically, the metal layer is formed on one surface of the waterproof layer.

In the case of aluminum (Al), the structure is dense and strong, so that durability can be improved and impact resistance can be improved. In addition, durability and repulsion and resistance to external stimuli are high, and when included as the metal layer of the present invention, there is an effect that can block the emission of radon radiation, a carcinogen contained in building materials such as concrete and gypsum board.

The surface layer is coated with an antibacterial coating composition, and the antimicrobial coating composition is fine powder shungite, fine powder illite, fine powder zeolite, fine powder elvanite, fine powder bentonite, fine powder diatomaceous earth, fine powder germanium, fine powder It contains an inorganic powder selected from the group consisting of loess, fine powder alum, fine powder jade, and mixtures thereof.

The fine powder as used in the present invention refers to being crushed by a ball mill, jet mill, other pulverizing device, etc. or manufactured to have the properties of a fine powder in the synthesis process, and the fine powder is defined as having an average particle diameter of 100 μm or less.

The “gait” as used in the present invention is produced as a layer (up to 2 m thick) or lenticular in a low metamorphic shale rich in small graphite microcrystals of the Proterozoic Jatulian in Shunga, near northern Lake Karelia Ladoga, Russia. .

The chemical composition of illite as used in the present invention is (K,H ₃ O)Al ₂ (Si,Al) ₄ O ₁₀ (H ₂ O,OH) ₂ . In terms of chemical composition, there are some that are close to muscovite, but relatively SiO ₂ , MgO, H ₂ O is high, and K ₂ O is small. It is a mineral of the same series as hundreds of mica. It has a hardness of 1 to 2 and a specific gravity of 2.6 to 2.9. The cleavage is complete, the streak is white, and there is an earthy luster. In terms of chemical composition or crystal structure, there is an opinion that it is not an independent mineral, but a mixed mineral containing other components. It is produced in aluminum-rich heterogeneous or tuff sedimentary rocks, and it is produced as a metamorphic mineral of hydrothermal mineralogy.

The zeolite referred to in the present invention is also called zeolite. Although there are many types, they have common features such as high water content, crystal properties, and acid phase. The hardness does not exceed 6, and the specific gravity is about 2.2. It is usually colorless transparent or white translucent. It got its name because it boils and expands when heated with a blowpipe. Most kinds dissolve in hydrochloric acid and often form a glue, but a few kinds are insoluble in hydrochloric acid. Main types include bantamite, fisheye, chabazite, soda zeolite, hewlandite, stilbite, lomontite, and inesite. It is produced in hollows or fissures of basic igneous rocks such as basalt and pyroclastic tuff, and sometimes exists as a secondary mineral in granite and gneiss. In addition, it may be produced in gold veins and other veins. Since the bonds between each atom are loose in the crystal structure, even if the moisture filling the gap is released with high heat, the skeleton remains intact, so other particulate matter can be adsorbed. Using this property, it is used as an adsorbent and as a molecular sieve that separates particles of different sizes.

Elvan stone in the present invention is known as a term used in Chinese oriental medicine, and geologically it belongs to the granite class. As quartz porphyry, feldspar porphyry, and granite porphyry, the name of the rock corresponds to quartz-monzonite. Quartz and feldspar are densely mixed. Yellowish white, light yellowish brown, light gray, dark green, or light green rocks with red dots or white dots evenly mixed in it resembles a rice ball made of barley, hence the name elvan stone. The main components are silicic anhydride and aluminum oxide, and a small amount of iron oxide is contained. What is known as yakseok is a yellowish white elvan stone that was used in the past as a filter agent to refine pills and as an anti-inflammatory agent to treat skin diseases such as swelling or boils on the back. According to Donguibogam, its nature is sweet, warm, and non-toxic. It has 3 to 150,000 pores per 1 cm ³ , so it has strong adsorption and contains about 25,000 kinds of inorganic salts. Because it acts to exchange ions with heavy metals, it is also used as a toxic metal remover, and it is known that when heat is applied to this rock, it emits far-infrared rays. Because of these characteristics, it is used in various industrial fields such as jjimjilbang, tableware, and medical equipment.

The bentonite referred to in the present invention often includes quartz, feldspar, zeolite, and the like. Colors include white, gray, light brown, and light green. It has pearl luster and waxy luster and is produced as a dense mass with a sense of fat. Tuff and glassy rhyolite are altered. Its use is very wide, and it is also used as a main component of water for petroleum refining, as a binder for castings, as an admixture for ceramic materials, and as a base agent for ointments. The name is derived from the strata of the state of Wyoming, USA, where it was discovered.

Diatomaceous earth referred to in the present invention is mainly made of silicic acid (SiO ₂ ), and has a white or grayish white color. It is light and soft enough to be smeared with powder when touched with your fingers. Because it is finely porous, it has strong absorption and is a poor conductor of heat. Diatomaceous earth in Korea is produced as soil in the tertiary or quaternary strata. During the Old 3rd Period of Korea, fault movements in the northeast to northeast directions occurred, forming rift sedimentary basins in various places. The Yeongil Basin, the Jigji Belt between Gilju and Myeongcheon, the Jigji Belt between Seoul and Wonsan, and the Tuman River Basin were formed, and the Tertiary Basin was deposited here. When the sedimentary layer was formed, diatoms were deposited in small shallow lakes or freshwater basins in various places to form mineral deposits. Among these sedimentary basins, diatomaceous earth in Yeongil Bay is the largest in terms of diatomite deposits, and is concentrated in Wolseong and Yeongil, Gyeongsangbuk-do. In addition, in North Hamgyong Province, Haenghyeon-ri and Namsan-ri, Anbyeon-myeon, Anbyeon-gun, Anbyeon-gun, Bupyeong-dong, Junam-myeon, Gyeongseong-gun, Hamgyeongbuk-do, Hoemun Mine, Jubuk-myeon, Gyeongseong-gun, Sanbon Mine, Myeongcheon-gun, Myeongcheon-gun Seomyeon Baengnok Mine, Gangwon-do There are known production areas such as Sephori, Gosap-myeon, Pyeonggang-gun. The development of diatomaceous earth as a mineral deposit in Korea began in 1941 when it was incorporated as a designated legal mineral by the 'Joseon Mining Ordinance'. Since then, diatomite deposits have been discovered in various places in Korea. In particular, it is said that diatomaceous earth produced in Iil-ri, Yangbuk-myeon, Wolseong-gun, Gyeongsangbuk-do was used as a raw material in Nodong-ri, Gyeongju-si, for the manufacture of Asahi furnaces in Japan. Recently, it is used as a fire-resisting material, and because of its strong absorbency, it is mostly used as a filter material for the purification of industrial water, water supply, medicine, food, etc. In addition, it is used as a filler for plastics and paper, an adsorbent for dynamite, a hemostatic agent, and a mixture of cement.

Germanium as used in the present invention has an element symbol Ge, an atomic number 32, and an atomic weight of 72.59±3. Its existence was predicted by D. I. Mendeleev in 1871 and it was called Eka silicon, but it was discovered in 1986 by German chemist C. A. Winkler in Ag GeS and named after Germany's Latin name "Germania". Because it is similar to silicon, it exists widely by substituting for silicon in silicate in the earth's crust, and is contained in sulfide minerals or coal containing copper or zinc, but there are very few minerals mainly composed of germanium.

The alum referred to in the present invention is also called alum stone. The chemical composition is KAl ₃ (SO ₄ ) ₂ (OH) ₆ . It appears as hexagonal plate-like or impression-shaped crystals, which are usually lumpy or granular. It has a hardness of 3.5 to 4 and a specific gravity of 2.6 to 2.9. The crystalline form has a complete cleavage on the underside, and a pearlescent luster appears on the cleavage surface. The odd one has no luster. It is white or gray, sometimes red, yellow, or reddish-brown. The streak color is white. Insoluble in hydrochloric acid, soluble in potassium hydroxide or hot sulfuric acid. It is produced in volcanic rock that has undergone hydrothermal alteration.

The jade as used in the present invention is dense and hard, transparent and beautifully shiny, and polished to luster. Mineralogically, nephrite is a type of amphibole, and jadeite is a type of alkali pyroxene. Nephrite is often milky white, and there are green, yellow, and red, etc., and jadeite is green and white. There are various names depending on the color, but white jade and jade are the representative ones. It has been valued in the Orient since ancient times, and has been used as a decorative stone and jade ware. Nephrite is produced as pulses in crystalline schist or gneiss in Turkey and other places, and in the contact zone of granite in northeast China. Jadeite is produced in the form of veins in serpentine in Myanmar, and is also produced in Yunnan, China and the Tibetan Plateau. Jade in the narrow sense refers to jade, but the present invention is not limited thereto, and jade in the present invention is defined to include all of the above-described jade in the broad sense.

Preferably, the inorganic powder is heat-treated by mixing with a solution containing any one selected from the group consisting of strontium ions (Sr ²⁺ ), calcium ions (Ca ²⁺ ), magnesium ions (Mg ²⁺ ), and mixtures thereof. it could be

When the inorganic powder is mixed with the ion-containing solution and subjected to heat treatment, the antibacterial activity of the inorganic powder itself against bacteria (Escherichia coli, etc.) can be improved, preferably strontium ions (Sr ²⁺ ) and calcium ions (Ca ²⁺ ) may be mixed with a solution containing it and heat-treated.

More preferably, the inorganic powder includes fine powder zeolite, 50 to 70 parts by weight of fine powder shungite, 50 to 70 parts by weight of fine powder illite, 50 parts by weight of fine powder elite, based on 100 parts by weight of the zeolite to 70 parts by weight, 50 to 70 parts by weight of fine powder bentonite, 30 to 50 parts by weight of fine powder diatomaceous earth, 30 to 50 parts by weight of fine powder germanium, 30 to 50 parts by weight of fine powder loess, 30 to 50 parts by weight of fine powder alum and fine powder jade ) 30 to 50 parts by weight, and may be heat-treated by mixing with a solution containing strontium ions (Sr ²⁺ ) and calcium ions (Ca ²⁺ ).

According to the above range, an antibacterial effect more than a simple combination may appear due to the interaction of the powders constituting the inorganic powder.

The antibacterial coating composition further comprises a natural extract selected from the group consisting of an extract of wild chrysanthemum, an extract of sagebrush, an extract of Seondeep rake, and mixtures thereof.

Saussurea neoserrata grows in deep mountains and is 50 to 110 cm high. Stems stand upright and branch out at the top. The base of the leaf flows into the stem and becomes the wing of the stem. The leaves on the root and the leaves on the lower part fall when the flowers bloom, and the leaves on the stem are alternate phyllotaxis and are lanceolate or oval-shaped lancets and are 12 to 15cm long. The tip is pointed and the bottom is narrow. It gets smaller towards the top, curly hairs grow on the back side, and there are sharp sawtooths on the edge. Also, the flowers are purple in August or September. At the end of branches and main stems, two flowers hang in corymbal inflorescences, with a flower diameter of 8 to 10 mm. The gun is cylindrical, 8 to 9 mm long and 4 to 5 mm in diameter. The pieces of cloth are arranged in 4 rows, the edges are purple, and white hairs like cobwebs are formed. The fruit is aqueous, about 5mm long, and has black-brown lines. The crown hair (冠毛) has 2 lines and is brown. Young shoots are edible. This species is endemic to Korea and distributed in the northern regions.

The pan-tailed grass grows in a sunny valley in a mountain valley, and the height is 30 to 80 cm. The rhizome is short and thick, and there are many fine roots. The leaf attached to the root is alternate phyllotaxis, the petiole is long, broad egg-shaped, gradually narrows and has a sharp tip, and the bottom is in the shape of a heart. The edge of the leaf is flat and the back side is white. Leaves are 5 to 10 cm long and 3 to 7 cm wide. The leaves on the stem are similar to this, but the petiole is short and the leaves are small. The sheath is membranous (膜質: translucent like thin paper). Flowers bloom in June or July in light pink or white, and hang on the inflorescence. There are no petals and the sepals are divided into 5 pieces. There are 8 stamens, longer than the calyx, the anthers are light reddish purple, and there is a small gland [腺] at the bottom of the stamens. Fruits are aqueous and ripen in September or October, are wrapped in calyx, and have 3 ridges. The young leaves and stems are edible, and the rhizomes are used to relieve heat, control competition, and eliminate inflammation of boils. It is distributed in Korea, northeastern China, Heilong River, and Ussuri River.

The vicia heptajuga Nakai is a perennial plant that grows in mountainous areas. The leaves are alternate phyllotaxis, and the even-pinnate compound leaves are composed of 4 to 6 pairs of leaflets, with tendrils at the tip, dull at the bottom, long pointed ends, and the edges are it's bland Flowers bloom in June-July in reddish-purple, and 2~4cm inflorescences appear from the leaf axils and run in raceme inflorescences biased to one side.

The natural extract may be adsorbed to the inorganic powder.

Preferably, the natural extract may be a mixture of 50 to 70 parts by weight of an extract of Beumaceae extract and 50 to 70 parts by weight of an extract of Seon deer raker with respect to 100 parts by weight of an extract of sangolchi.

In the case of the above range, it is possible to maximize the antibacterial activity against bacteria that can occur frequently in wallpaper or flooring including the noise reducing material by the interaction of each extract, and in particular, when according to the above range, the inorganic Even if the natural extract is included in the pores of the inorganic powder using the powder as a carrier, the antibacterial effect may not be lost, and thus the antibacterial activity may be maintained for a long period of time.

The method for preparing the antibacterial coating composition of the present invention is a group consisting of fine powder šœgate, fine powder illite, fine powder zeolite, fine powder elvanite, fine powder bentonite, fine powder diatomaceous earth, fine powder germanium, fine powder loess, fine powder alum, fine powder jade, and mixtures thereof Inorganic powder impregnation step of impregnating the selected inorganic powder with a natural extract selected from the group consisting of an extract of wild chrysanthemum odorifera extract, an extract of hornwort extract, an extract of serrata serrata, and a mixture thereof so that the natural extract is impregnated into the porous material of the inorganic powder; a drying step of drying the inorganic powder impregnated with the natural extract according to the impregnation step; mixing the inorganic powder dried according to the drying step with purified water; It may include the step of mixing alcohol.

Wallpaper according to another embodiment of the present invention includes the noise reducing material using the loofah, and the flooring according to another embodiment of the present invention includes the noise reducing material using the loofah.

Specifically, by including the noise reducing material using the loofah cucumber in the wallpaper or flooring used in the home, it is possible to reduce the noise problem between floors in the apartment house through the improvement of the sound absorbing effect for the impact sound and the like.

Furthermore, by coating the surface layer of the noise reduction material with the antibacterial coating composition, it is possible to improve the antibacterial effect against mold or various bacteria that may occur in wallpaper or flooring.

The material, type, size, etc. of the wallpaper and flooring are not limited, and it is defined to include all ranges applicable to those of ordinary skill in the art.

According to the noise reducing material using loofah according to the present invention, excellent noise and vibration reduction effect can be exhibited despite the thin thickness of the loofah fiber, which is a natural material harmless to the human body. In addition, by including an antibacterial coating layer on the surface layer of the noise reducing material, it is possible to enhance the antibacterial effect against various bacteria that may occur on the wallpaper or flooring of the apartment house.

1 is a schematic diagram of the experimental results for the noise reduction rate of a noise reducing material using a loofah cucumber according to an embodiment of the present invention.
Figure 2 is a schematic diagram of the experimental results for the vibration reduction rate of the noise reducing material using a loofah cucumber according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

[Preparation Example 1: Preparation of a sound-absorbing layer constituting the noise reducing material of the present invention]

1. Manufacture of loofah cucumber fiber and cedar fiber

In order to prepare the loofah fruit and the cypress tree trunk in the form of long fibers, the loofah cucumber fruit and the cypress tree trunk were boiled at 100° C. for one hour to extract bast fibers from each.

2. Preparation of sound-absorbing layer

After adding water, the pulp fiber, the binder material, the expansion material, the flame retardant material, the loofah fiber and the cedar fiber to the kneader and mixing them for 20 minutes, the mixed material was injection molded into a panel shape through an injection molding machine.

Thereafter, a sound-absorbing layer containing loofah fibers was prepared through a drying step of drying at 60 to 80° C. using an 18 to 20 mm microwave dryer.

The weight parts of the solvent (water), the pulp fiber, the binder material, the expansion material, the flame retardant material, the loofah cucumber fiber and the cypress tree fiber included in the sound-absorbing layer are shown in Table 1 below.

solvent (water) pulp fiber binder material inflatable flame retardant loofah fiber cedar fiber t1 100 40 2.5 2.5 2.5 - - t2 100 40 2.5 2.5 2.5 3 - t3 100 40 2.5 2.5 2.5 5 - t4 100 40 2.5 2.5 2.5 7.5 - t5 100 40 2.5 2.5 2.5 10 - t6 100 40 2.5 2.5 2.5 12 - t7 100 40 2.5 2.5 2.5 7.5 3 t8 100 40 2.5 2.5 2.5 7.5 5 t9 100 40 2.5 2.5 2.5 7.5 7.5 t10 100 40 2.5 2.5 2.5 7.5 10 t11 100 40 2.5 2.5 2.5 7.5 12

(Unit: parts by weight)

[Preparation Example 2: Preparation of antibacterial coating composition]

1. Preparation of mixed inorganic powder dispersion

Fine powder šœgate, fine powder illite, fine powder zeolite, fine powder elvanite, fine powder bentonite, fine powder diatomite, fine powder germanium, fine powder loess, fine powder alum, and fine powder jade As shown in Table 2, inorganic powders were prepared.

In addition, the inorganic powder was prepared by mixing with a solution containing strontium ions (Sr ²⁺ ) and calcium ions (Ca ²⁺ ), heat-treating them for 1 hour, and mixing purified water.

S1 S2 S3 S4 S5 S6 zeolite 100 100 100 100 100 100 sœguide 100 40 50 60 70 80 illite 100 40 50 60 70 80 elvan stone 100 40 50 60 70 80 bentonite 100 40 50 60 70 80 diatomaceous earth 100 20 30 40 50 60 germanium 100 20 30 40 50 60 ocher 100 20 30 40 50 60 alum 100 20 30 40 50 60 jade 100 20 30 40 50 60

(Unit: parts by weight)

2 Preparation of natural extracts included in the coating composition

The wild chrysanthemum leaves were pulverized with a blender and then prepared into powder. After adding 50% ethanol as an extraction solvent to the powder sample at a ratio of 1:10 (w; v), and then completely immersing the powder sample, extraction was repeated 3 times for 3 hours at 80°C while refluxing. The extract is Whatman No. 2 filtered with filter paper. The filtrate was concentrated under reduced pressure at 60° C. to prepare an extract of sangolchi (SE).

By using the same method as the production method of the extract (SE) of the mountain gourd extract (BE) and serrata extract (VE) were prepared.

Thereafter, a complex extract was prepared by mixing natural extracts as shown in Table 3 below.

MS1 MS2 MS3 MS4 MS5 MS6 MS7 MS8 SE 100 100 100 100 100 100 100 100 BE - 60 - 40 50 60 70 80 VE - - 60 40 50 60 70 80

(Unit: parts by weight)

[Experimental Example 1: Experiment of noise reduction effect of noise reduction material using loofah cucumber]

Measurement of the noise reduction effect of the noise reduction material using the scrubber cucumber of the present invention is to put a noise generator in a square box, paint the inner wall of the box with different materials, close the door of the box, and then use a noise meter (RION) from outside the box. -NA-27) was used to determine the noise level.

Specifically, the door of the box was closed while the cell phone whose noise measurement value was fixed at 81.9 dB was placed in the box, and the cell phone in the box was called from the outside, and the noise level was measured from the outside of the box with a sound level meter. After repeating this process three times to obtain an average value, the reduction rate was calculated.

The noise measurement value when the inner wall of the box was not treated with any material was used as a control group.

The results are shown in Table 4 below. Meanwhile, in FIG. 1, the noise reduction rate for each material shown in Table 4 below is schematically graphed.

ingredient Noise Measurement (dB) 1 time Episode 2 3rd time Average Reduction rate (%) control 70.5 70.9 71.0 70.8 13.56 tree 66.3 67.5 68.9 67.6 17.47 Styrofoam 64.5 66.0 67.0 65.8 19.7 plain wallpaper 65.5 67.8 66.5 66.6 18.7 T1 61.2 62.2 62.5 62.0 24.3 T2 60.5 59.5 61.2 60.4 26.3 T3 57.5 58.2 57.3 57.7 29.6 T4 53.4 52.5 53.5 53.1 35.2 T5 56.0 55.0 54.0 55.0 32.9 T6 57.8 59.5 60.2 59.1 27.8 T7 60.2 59.5 61.2 60.3 26.4 T8 52.0 51.5 51.7 51.7 36.9 T9 49.7 49.5 48.5 49.2 39.9 T10 51.2 51.0 50.5 50.9 37.9 T11 58.0 57.4 58.5 57.9 29.3

(T1 to T11 mean a noise reduction material including a sound absorbing layer prepared by the weight of t1 to t11.)

According to Table 4, based on 100 parts by weight of the solvent, 30 to 50 parts by weight of the pulp fiber, 1 to 5 parts by weight of the binder material, 1 to 5 parts by weight of the expansion material, 1 to 5 parts by weight of the flame retardant, and the loofah cucumber In the case of a noise reducing material including a sound absorbing layer prepared by mixing 5 to 10 parts by weight of fibers (t3 to t5), it can be seen that the noise reduction effect is excellent.

In particular, it can be seen that in the case of a noise reduction material including a sound-absorbing layer prepared by additionally mixing (t8 to t10) of 5 to 10 parts by weight of the cypress wood fibers with respect to 100 parts by weight of the solvent, the effect is maximized.

[Experimental Example 2: Vibration Reduction Effect Experiment of Noise Reduction Material Using Scrubber Cucumber]

To measure the vibration reduction effect of the noise reducing material using the scrubber cucumber of the present invention, the level of vibration was measured using a vibration measuring device (RION-VM-52) by laying the flooring material on a 10cm X 10cm iron plate and free-falling iron beads from a 50cm vertical sky. .

Using the result of the iron plate itself as a control, a noise reducing material composed of different materials was laid under the same iron plate as above, and the iron ball was freely dropped from 50 cm vertical to measure the degree of vibration with a vibration meter. did After repeating this process three times to obtain an average value, the reduction rate was calculated.

The results are shown in Table 5 below. Meanwhile, in FIG. 2, the vibration reduction rate for each material shown in Table 5 below is schematically illustrated.

ingredient Frequency (dB) 1 time Episode 2 3rd time Average Reduction rate (%) Control (steel plate) 40.8 41.0 40.8 40.8 - iron plate + wood 37.5 37.5 36.8 37.3 8.6 iron plate + styrofoam 38.5 38.0 37.5 38.0 6.9 iron plate + plain wallpaper 38.0 38.5 37.7 38.1 6.7 iron plate + T1 35.5 36.5 36.8 36.3 11.0 iron plate + T2 35.7 34.5 36.9 35.7 12.5 iron plate + T3 32.2 32.5 33.0 32.6 20.1 iron plate + T4 31.5 32.5 31.2 31.7 22.3 iron plate + T5 32.5 33.1 33.4 33.0 19.2 iron plate + T6 36.5 36.7 37.5 36.9 10.0 iron plate + T7 36.7 36.7 37.0 36.8 9.9 iron plate + T8 28.5 29.5 27.4 28.5 30.1 iron plate + T9 25.5 24.5 25.8 25.3 38.0 iron plate + T10 27.7 28.4 28.5 28.2 30.9 iron plate + T11 36.7 37.0 37.4 37.0 9.3

(T1 to T11 mean a noise reduction material including a sound absorbing layer prepared by the weight of t1 to t11.)

According to Table 5, based on 100 parts by weight of the solvent, 30 to 50 parts by weight of the pulp fiber, 1 to 5 parts by weight of the binder material, 1 to 5 parts by weight of the expansion material, 1 to 5 parts by weight of the flame retardant, and the loofah cucumber In the case of a noise reducing material including a sound absorbing layer prepared by mixing 5 to 10 parts by weight of fibers (t3 to t5), it can be seen that the vibration reduction effect is excellent.

In particular, it can be seen that in the case of a noise reduction material including a sound-absorbing layer prepared by additionally mixing (t8 to t10) of 5 to 10 parts by weight of the cypress wood fibers with respect to 100 parts by weight of the solvent, the effect is maximized.

[Experimental Example 3: Antibacterial effect test of antibacterial coating layer formed on the surface layer]

3-1. Antibacterial effect test for mixed inorganic powder dispersion

According to the KS 0693 - 1990 test method, Escherichia coli as a strain was inoculated with 10 ⁶ cotton and PET, and the antibacterial degree of the fabric against the mixed inorganic powder dispersion (S1 to S6) was measured.

The antibacterial effect is shown in Table 6 below.

[Evaluation Table]

◎: Amount of microorganisms 10 ³ or less

○: Amount of microorganisms 10 ⁴ or less

△: Amount of microorganisms 10 ⁵ or less

S1 S2 S3 S4 S5 S6 antibacterial ○ △ ◎ ◎ ◎ △

According to the antibacterial activity evaluation, it was confirmed that excellent evaluation was shown in S3 to S5.

3-2. Antibacterial effect experiment on inorganic powder containing natural extracts

The complex extracts of MS1 to MS8 were adsorbed to S4, and the antibacterial effect of each mixture was tested by dispersing it in purified water. The test method was carried out in the same manner as the antibacterial effect experiment on the inorganic powder dispersion of the mixed phase, and the results are shown in Table 7 below compared to the relative effect on the dispersion of the inorganic powder of the mixed phase (S4).

For comparison with the antibacterial effect of S4, the index of S4 was set to 5, and the antibacterial effect of MS1 to MS8 was evaluated as indices 1 to 10. The higher the index, the better the antibacterial effect.

S4 MS1 MS2 MS3 MS4 MS5 MS6 MS7 MS8 antibacterial 5 6 5 6 7 9 10 9 6

(Unit: Index)

According to the results of Table 7, it was confirmed that MS1 to MS8 showed equal or excellent evaluation compared to S4, and in particular, it was shown that MS5 to MS7 had the best antibacterial effect.

This will mean that the antibacterial effect of the coating layer is excellent due to the complex action between each component when used as a natural complex extract, compared to the case of using only the mixed inorganic powder dispersion.

Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also provided. is within the scope of the

Claims (8)

surface layer;
a sound-absorbing layer located on the lower side of the surface layer and including loofah fibers;
a heat insulating layer located on the lower side of the sound-absorbing layer and made of semi-rigid foam or rigid foam to have a heat-insulating effect; and
Located on the lower side of the heat insulating layer, comprising a waterproof layer formed on one side of the metal layer
Noise reduction material using loofah cucumber. According to claim 1,
The surface layer is selected from the group consisting of polyurethane-based resins and polyolefin-based resins, polystyrene-based resins, polyester-based resins, polyamide-based resins, polyacrylic resins, polymethacrylic resins, and mixtures thereof
Noise reduction material using loofah cucumber. According to claim 1,
The sound-absorbing layer is formed by mixing a solvent, pulp fiber, binder material, expansion material, flame retardant material and loofah fiber
Noise reduction material using loofah cucumber. According to claim 1,
The insulating layer is selected from the group consisting of styrofoam, urethane foam, latex foam, silicone foam, polyvinyl acetate foam, and mixtures thereof.
Noise reduction material using loofah cucumber. According to claim 1,
The metal layer is formed by thermal fusion with a metal powder selected from the group consisting of aluminum (Al) powder, aluminum alloy powder, and mixtures thereof.
Noise reduction material using loofah cucumber. According to claim 1,
The surface layer is coated with an antibacterial coating composition,
The antibacterial coating composition includes fine powder shungite, fine powder illite, fine powder zeolite, fine powder elvanite, fine powder bentonite, fine powder diatomite, fine powder germanium, fine powder ocher, fine powder alum, fine powder jade and containing an inorganic powder selected from the group consisting of mixtures thereof
Noise reduction material using loofah cucumber. A wallpaper comprising a noise reducing material using the loofah cucumber according to any one of claims 1 to 6. A flooring material comprising a noise reducing material using the loofah according to any one of claims 1 to 6.

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