KR100488980B1 - Sound absorbing and excluding material and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a hop sound absorbing material that can attenuate noise between upper and lower floors or adjacent households in a building such as a multi-unit house of two or more floors, and a method for manufacturing the same. 20-30% by weight of waste iron ore or silica powder is mixed to form a synthetic rubber sheet, and a glass fiber sheet made of fine glass fibers is supplied between the synthetic rubber plate and the synthetic rubber plate, and a latex adhesive is applied to the glass fiber sheet through a nozzle. The present invention relates to a building absorbing and insulating material manufactured by pressing a rolling machine while spraying, and a method of manufacturing the same.

Description

Sound-absorbing and sound-absorbing material for building and its manufacturing method {Sound absorbing and excluding material and method for manufacturing the same}

The present invention relates to a sound absorbing and insulating material for attenuating vibration and noise between upper and lower floors or adjacent households in a building such as a multi-family house, and a method of manufacturing the same.

Sound-absorbing and sound-proofing material is a sound-absorbing material with vibration and vibration damping function that absorbs or reflects sound waves of noise generated in residential life, or attenuates sound waves by causing incident sound and reflected sound to collide or interfere with each other. to be.

The sound is roughly classified into heavy impact sound, light impact sound, low frequency sound and high frequency sound, and the characteristics of sound absorption and sound insulation, and methods of sound absorption and sound insulation differ according to the types of sound waves.

Therefore, a single material or a single sound insulation method alone can not achieve the desired performance.

As the sound absorbing and insulating material according to the prior art, synthetic resin or polymer synthetic rubber is mainly used as waste metal powder, loess, vermiculite, ganban stone, zeolite, jade powder (sawdust), mica, calcium carbonate, barium sulfate, conductive car powder, zinc powder, iron oxide There is a sound insulation material which is formed by mixing titanium oxide, aluminum powder and rubber plate material, and there is a sheet-type synthetic rubber plate which foams a synthetic resin or synthetic rubber so that a plurality of pores are embedded, and a nonwoven fabric or shape is formed between the synthetic rubber plate and the synthetic rubber plate. There is a synthetic rubber plate for sound absorption and sound insulation, which is made of a uniform thickness by laminating and heating different synthetic fiber layers and simultaneously bonding them by rolling compression.

However, such sound absorbing and sound insulating materials can selectively attenuate heavy impact sound, light impact sound, low frequency sound and high frequency sound. However, there are disadvantages in that they cannot collectively attenuate all the various types of noise generated in residential life. Or in the case of moisture permeation has the disadvantage that the sound absorption, sound insulation effect is sharply lowered.

The present invention has been made to solve the above problems of the prior art, it is possible to integrate attenuated various kinds of sounds, such as heavy impact sound, light impact sound, low frequency sound, high frequency sound, etc., to prevent moisture absorption or moisture permeation The purpose is to provide an excellent building sound absorbing and insulating material and its manufacturing method.

Another object of the present invention is to provide a sound absorbing and insulating material for building excellent in soundproofing effect as well as the soundproofing effect and a manufacturing method thereof.

Still another object of the present invention is to provide a manufacturing method which can reduce manufacturing cost by simply manufacturing a sound absorbing and insulating material for construction.

Building sound absorbing and insulating material according to the present invention for achieving the above object, the synthetic rubber plate, the upper and lower synthetic rubber plate is formed by mixing the diatomaceous earth powder and waste iron ore or silica powder; Characterized in that composed of a glass fiber sheet bonded between the upper, lower synthetic rubber plates.

In addition, the synthetic rubber plate is 20 to 40% by weight of synthetic rubber such as EPDM (Ethylene, Propylene, Rubber) or EVA (Ethylene, Vinyl Acetate), 40 to 50% by weight of diatomaceous earth powder, 20 to 30% by weight of waste iron ore or silica powder It is characterized by being blended with the% molded.

The diatomaceous earth powder is a fine particle having a specific gravity of 2.0 or more and a particle diameter of 300 mesh or more, and the waste iron ore or silica powder has a specific gravity of 2.5 or more and a particle size of 300 mesh or more.

In addition, the method for manufacturing a sound absorbing and insulating material for building according to the present invention comprises a first step of combining synthetic rubber, diatomaceous earth powder, waste iron ore or silica powder, and a second step of heating and extruding the mixture blended in the first step as an extruder, The glass fiber sheet is interposed between the upper and lower synthetic rubber plates while continuously supplying the synthetic rubber plate formed in the third step and the synthetic rubber plate formed in the third step by passing the mixture extruded in the second step through a rolling machine. The upper and lower rubber plates and the glass fiber sheets are pressed together by passing the glass fiber sheet coated with the upper and lower synthetic rubber plates and the latex-based adhesive supplied in the fourth step and the fourth and lower rubber plates and the glass sheets supplied in the fourth step. It is characterized by consisting of a fifth step to be bonded.

Sound waves are airborne sound transmitted through air and solid sound transmitted through solid, so sound absorption and sound absorption is done using the above hop and sound insulation materials to attenuate airborne sound. The plated synthetic rubber plate is used to isolate the floor finishing mortar layer and the concrete frame to attenuate it by dust and vibration damping.

In the present invention, the diatomaceous earth uniformly mixed with EPDM or EVA in a weight ratio of 40% to 50% increases the sound absorption effect, and the high specific gravity waste iron ore or silica powder obtains a sound insulation effect that attenuates high-frequency sound transmission waves.

Diatomaceous earth, on the other hand, is a collection of fossil soils formed by the decomposition of constituents in the body by the decomposition of the components of the body, and the formation of strata. It is a siliceous raw material produced from a mixture of vaginal corrosives, iron hydroxide, iron sulfide, and the like, and is a soil mass in which harmful substances of diatom are deposited. But it is hardened by acupressure and is in a rock state. The harmful chemical composition of pure diatoms is Si0₂ 96.16∼96.80%, AI₂0₃ + Fe₂0₃ 1.20 ~ 1.80%, compounded water 1.92 ~ 1.98%, which is almost Si0₂. However, since diatomaceous earth actually produced is caused by the accumulation of the harmfulness of diatoms at the bottom of the sea or the bottom of the lake, the chemical composition is also different according to the type and amount of impurities mixed therein, and various kinds of impurities are mixed in the diatomaceous earth. Organic matter, sand and iron oxides. The organic material can be removed by calcination, and the sand can be removed by defense and the iron oxide can be removed by mixing the brine at 700 ~ 800 ℃. The size of fossil diatoms is about microns and can be confirmed only by magnification hundreds of times with a microscope. The structure is a collection of porous cells such as circular and semicircular. The material properties of diatomaceous earth vary depending on the type and shape of diatomaceous earth, but the common feature is that there are countless small pores in the cell of diatomaceous earth.

Therefore, since diatomaceous earth contains a lot more fine pores than any natural or artificial material, when incident sound waves are introduced into the pores, they are reflected on the inner sphere of the pores, causing incident or reflected sound waves to collide or interfere with each other. Resonance has a high sound absorption and sound insulation effect, and high specific weight waste iron ore has the effect of blocking the transmission of high frequency sound.

In addition, the glass fibers squeezed between the plate-shaped synthetic rubber plate is made of glass fibers with higher reflectivity of sound waves and smaller fiber thickness than any material, so that the transmission amount of sound waves can be greatly reduced even if the thickness of the glass fiber sheet is thin. This is because when the sound wave is incident on the glass fiber sheet, the reflected sound waves reflected from the outer surface of the glass fiber cause mutual collision or interference, and noise is attenuated.The latex (LATEX) -based adhesive flows into the glass fiber sheet and is compressed so that the glass fiber is scattered. Prevents moisture permeability and moisture absorption.

The heavy shock wave, that is, the shock wave transmitted to the solid, attenuates the amount of sound wave as the more layers are formed, and a buffer layer made of a synthetic rubber plate is formed between the layers, and a glass fiber layer is formed between the synthetic rubber plate and the synthetic rubber plate. Since it is laminated and laminated in the other layers, the vibration and vibration damping effect of the transmission sound is improved.

On the other hand, the synthetic rubber plate can be mixed with flame retardant materials such as tetrachlorophthalic anhydride, tetrabromophthalic anhydride in a predetermined ratio to increase the flame retardancy, when the synthetic rubber plate is used as a flooring material to prevent slipping It is possible to form a checkerboard irregularities on the upper surface of the rubber plate, and when only a low level of hop and sound insulation effect is required, the plate-shaped synthetic rubber plate may be used only.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

The method of manufacturing the hop and sound insulation material of the present invention comprises the steps of mixing a synthetic rubber and a high specific gravity of the inorganic powder, such as EPDM or EVA as a main raw material, and melt-sprayed the mixed material in the extruder (1, 2) rolling mill (4) It is divided into a step of forming the plate-shaped synthetic rubber plates (11, 12) by passing through, and at the same time laminating the glass fiber sheet 13 in a multilayer structure.

The mixing step is 20 to 40% by weight of polymer synthetic rubber such as EPDM or EVA, 40 to 50% by weight of fine granular diatomaceous earth powder having a specific gravity of 2.0 or more and a particle diameter of 300 mesh or more, specific gravity of 2.5 or more, and particle diameter of 300 20-30% by weight of high specific weight waste iron ore or silica powder is mixed with a stirrer to be uniformly mixed for 5 minutes.

The step of molding the synthetic rubber plate is to supply the mixture mixed uniformly to the two upper and lower extruders (1, 2) and the temperature in the extruders (1, 2) is 110-180 ° C, the melting temperature of the synthetic rubber The mixture residence time in the extruder is 30 seconds to 1 minute, the screw rotational speed of the extruders (1, 2) is set to 600 ~ 1000RPM and the injection pressure of the synthetic rubber is 30 ~ 50kg / cm³ so that the rolling machine ( 4, 5) continuously extruded. The mixture extruded from the extruders 1 and 2 is formed into plate-like synthetic rubber plates 11 and 12 having a uniform thickness while passing through the rolling machines 4 and 5. At this time, the upper and lower synthetic rubber plates (11, 12) formed by the two upper and lower extruders (1, 2) and the rolling machine (4, 5) continuously supplied while being wound on the winding drum (3) between 20μm or less Rolling machine while supplying a glass wool sheet (Glass Wool Sheet) of 2mm or more in thickness and fine glass fibers, and supplying a latex-based adhesive (15) to the upper and lower synthetic rubber plates (11, 12) and glass fiber sheets (13) It is crimped by (6).

In the above, the upper and lower synthetic rubber plates 11 and 12 are supplied so that the thicknesses are 1 to 5 mm, respectively.

When the upper and lower synthetic rubber plates 11 and 12 and the glass fiber sheet 13 are compressed by the rolling machine 6, the glass fiber sheet positioned at the center by the latex-based adhesive 15 is the upper and lower synthetic rubber plates 11. And a sound absorbing material 10 having a thickness of 5 mm to 12 mm having a multi-layer structure, which is adhered to (12) and prevents moisture absorption and moisture permeation.

In FIG. 1, reference numeral 9 denotes a guide roller, 7 denotes a winding roller of a sound absorbing and insulating material, and 20 denotes an adhesive supply device for supplying a latex-based adhesive 15 through several nozzles 21.

The upper and lower synthetic rubber plates for building absorption and sound insulation according to the present invention are made of 20-40% by weight of polymer synthetic resin such as EPDM or EVA, 40-50% by weight of diatomaceous earth powder and 20-30% by weight of waste iron ore or silica powder, Composed between the upper and lower synthetic rubber plate is bonded to the glass fiber sheet is bonded to the excellent noise attenuation performance and vibration damping function, the upper and lower synthetic rubber plate is formed by an extruder and a rolling machine and continuously supplied therebetween The glass fiber sheet is continuously supplied to the upper and lower synthetic rubber plates and the glass fiber sheet coated with the adhesive is pressed by a rolling machine, so that the sound absorbing and insulating material is manufactured. Therefore, the manufacturing process is simple and the manufacturing cost is reduced. .

1 is a schematic diagram representing a manufacturing process of the sound absorbing and insulating material for buildings according to the present invention,

2 is a cross-sectional view of the building sound absorbing and insulating material according to the present invention;

<Explanation of symbols on main parts of the drawings>

11: upper synthetic rubber plate 12: lower synthetic rubber plate

13: glass fiber sheet 15: latex adhesive

Claims (8)

High and low synthetic rubber plates formed by mixing a polymer synthetic rubber, a diatomaceous earth powder and waste iron ore or a silica powder; Building sound absorbing and sound insulating material, characterized in that consisting of a glass fiber sheet bonded between the upper and lower synthetic rubber plates. According to claim 1, wherein the synthetic rubber plate is 20 to 40% by weight of synthetic rubber, such as EPDM (Ethylene, Propylene, Rubber) or EVA (Ethylene, Vinyl Acetate), 40 to 50% by weight of diatomaceous earth powder, waste iron ore or silica 20-30% by weight of powder is blended and molded, the sound absorbing and insulating material for building. The sound absorbing and insulating material for building according to claim 1 or 2, wherein the synthetic rubber sheet has a thickness of 1 to 5 mm and the glass fiber sheet has a thickness of 2 mm or more. The diatomaceous earth powder is a fine particle having a specific gravity of 2.0 or more and a particle size of 300 mesh or more, and the waste iron ore or silica powder has a specific gravity of 2.5 or more and a particle size of 300 mesh or more. Sound absorption and sound insulation for building. The sound absorbing and insulating material for building according to claim 1, wherein the glass fiber sheet has a thickness of 2 mm or more and is made of glass fiber having a thickness of 20 μm or less.  A first step of combining synthetic rubber, diatomaceous earth powder, waste iron ore or silica powder, a second step of heating the mixture blended in the first step and extruding it as an extruder, and a rolling mill of the mixture extruded in the second step. A third step of forming a synthetic rubber plate by passing through it, and a fourth step of continuously feeding the glass fiber sheet between the upper and lower synthetic rubber plates while continuously supplying the synthetic rubber plates formed in the third step from the upper and lower sides; Passing the glass fiber sheet coated with the upper, lower synthetic rubber plate and latex-based adhesive supplied in the fourth step through a rolling machine, the upper and lower synthetic rubber plates and the glass fiber sheet is composed of a fifth step to be bonded to each other by bonding Method for manufacturing sound absorption and sound insulation materials for building. According to claim 6, The synthetic rubber plate is 20 to 40% by weight of synthetic rubber, such as EPDM (Ethylene, Propylene, Rubber) or EVA (Ethylene, Vinyl Acetate), 40 to 50% by weight of diatomaceous earth powder, waste iron ore or silica 20 to 30% by weight of powder is uniformly blended and molded, characterized in that the building acoustic and sound insulating material manufacturing method. 7. The method of claim 6, wherein the heating temperature of the mixture in the second step is 110 ~ 180 ° C.