WO1998036135A1 - Panneau insonorisant - Google Patents

Panneau insonorisant Download PDF

Info

Publication number
WO1998036135A1
WO1998036135A1 PCT/JP1998/000407 JP9800407W WO9836135A1 WO 1998036135 A1 WO1998036135 A1 WO 1998036135A1 JP 9800407 W JP9800407 W JP 9800407W WO 9836135 A1 WO9836135 A1 WO 9836135A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbing material
sound
sound absorbing
panel according
crushed product
Prior art date
Application number
PCT/JP1998/000407
Other languages
English (en)
Japanese (ja)
Inventor
Hideyuki Kuroda
Yoshiaki Miki
Original Assignee
Zeon Kasei Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zeon Kasei Co., Ltd. filed Critical Zeon Kasei Co., Ltd.
Publication of WO1998036135A1 publication Critical patent/WO1998036135A1/fr

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
    • E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped

Definitions

  • the present invention relates to a soundproof panel mounted on a lower surface of an elevated road, for example, and more particularly to an improvement of a soundproof panel using a magnetic material-coated plastic such as a magnetic tape or a magnetic sheet, particularly, a waste material thereof.
  • a magnetic material-coated plastic such as a magnetic tape or a magnetic sheet
  • the sound absorbing material a fibrous sound absorbing material such as glass wool and rock wool, and a metal or ceramic porous sound absorbing material such as aluminum are known. Concrete materials also have sound absorbing performance. In addition, plywood, gypsum board, and particle board are also considered as sound absorbing materials. For the purpose of improving the sound absorption performance of a specific frequency, a perforated plate or the like is used.
  • a panel in which a fibrous sound absorbing material such as glass wool or rock wool is attached between a front plate and a back plate is used.
  • the fibrous sound-absorbing materials such as the glass wool and the rock wool have a hygroscopic property and a water absorbing property.
  • ceramic and concrete sound absorbing materials are generally not preferable for use as soundproofing panels because they are heavy and expensive.
  • a mere plate or a perforated plate generally has low sound absorbing performance, and cannot be used as a soundproof panel by itself.
  • the inventors of the present invention have conducted intensive studies on sound-absorbing panels that can effectively use the waste material of the magnetic material-coated plastic as described above, and as a result, placed a first sound-absorbing material made of a foam member or the like on the sound source side.
  • a first sound-absorbing material made of a foam member or the like on the sound source side.
  • the present invention has been made in view of such circumstances, and provides a soundproofing panel that can effectively use waste material of a magnetic material-coated plastic, further improves sound absorption characteristics, and is particularly suitable for use on a lower surface of an elevated road.
  • the purpose is to provide.
  • a soundproof panel is provided with a front plate disposed on a sound source side, a rear plate disposed on an opposite sound source side, and mounted between the front plate and the rear plate.
  • a second sound absorbing material wherein the second sound absorbing material is substantially composed of a first sound absorbing material disposed on the front plate side and a crushed product of a magnetic material-coated plastic disposed on the rear plate side. And a sound absorbing material.
  • the front plate is preferably made of a perforated plate such as an expanded metal having a mesh-like opening or a punched metal having a large number of holes formed therein. Up to 80% of expanded metal made of aluminum can be preferably used.
  • a metal plate such as an aluminum plate in which a large number of holes having a diameter of 3 to 50 are formed at a pitch of 5 to 100 can be preferably used.
  • the back plate is not particularly limited, but may be a metal plate such as an aluminum, a zinc iron plate, a stainless steel plate, a plastic molded plate, or a metal powder or a glass fiber.
  • a plastic molded plate filled with any filler can be used.
  • a flat plate may be used as the back plate, but when a panel is required to have strength, a keystone plate or the like formed into a cross-sectional uneven shape is preferably used.
  • the keystone plate is made of, for example, a zinc plated steel plate or a stainless steel plate.
  • the sound absorbing material mounted between the front plate and the back plate includes a first sound absorbing material and a second sound absorbing material, the first sound absorbing material is disposed on the sound source side, and the second sound absorbing material is It is located on the opposite side of the sound source.
  • the first sound absorbing material is formed of a foamed member.
  • a foamed member a melamine foam resin panel, a urethane foam resin panel, a phenol foam resin panel, a polyolefin foam resin panel, or the like is used.
  • the density of the foamed member is not particularly limited, and is preferably 1 to 100 kg / m 3 .
  • the foaming state of the foamed member includes open-cell foams and closed-cell foams. In the present invention, open-cell foams are preferred. This is because those with open cells have better sound absorbing properties. Further, it is preferable that the surface of the foam member as the first sound absorbing member is subjected to a water-repellent treatment.
  • the water-repellent treatment is not particularly limited, but can be realized by, for example, applying a fluorine-based material.
  • the foamed member is not limited to a resin, and may be formed of an inorganic material.
  • the thickness of the first sound absorbing material is preferably about 10 to 200 thighs. If the thickness is too thin, the sound absorbing performance tends to decrease.If the thickness is too thick, the manufacturing cost increases, and the thickness of the entire soundproof panel increases, which makes the transport and construction of the panel undesirably complicated. .
  • a wavy or other unevenness is formed on the sound source side surface of the first sound absorbing material. This is because the sound absorption characteristics can be further improved.
  • the second sound-absorbing material is substantially composed of a crushed product of a magnetic substance-coated plastic, and preferably has an air-permeable bag and an apparent specific gravity of 0.05 to 0. 4. It is preferable to be composed of a crushed product of a plastic coated with a magnetic material, which is accommodated so as to have a ventilation resistance of 3 to 90 dyn ⁇ S / cm 4 .
  • the crushed magnetic material-coated plastic is made of soundproof panels in addition to the breathable bag (including the breathable box). May be packed as is in the casing.
  • the crushed product of the magnetic material-coated plastic accommodated in the air-permeable bag (or casing; omitted below), a mere crushed product which does not perform any processing other than crushing may be used alone. May be mixed. Alternatively, only the compact of the crushed product can be stored in the air-permeable bag. The compact of the crushed product will be described later.
  • the crushed product may be filled into the air-permeable bag in a layered manner or randomly. Further, for uniform filling, a partition plate having a honeycomb shape, a circular shape, or the like may be disposed inside, and a crushed product may be filled between the partition plates.
  • the breathable bag may be a plastic film, a woven fabric, a nonwoven fabric (eg, a polyester nonwoven fabric), or a composite thereof, and is not particularly specified.
  • Examples of the magnetic tape as the magnetic material coated plastic include an audio tape, a video tape, and a computer tape.
  • the magnetic sheet may be a floppy disk or the like.
  • Magnetic tapes consist of a magnetic layer, a base film and a back layer, but some have no back layer.
  • the magnetic layer is made of a magnetic powder using iron oxide, metal, nordium ferrite, etc., a binder using vinyl chloride resin, nitrocellulose, polyurethane resin, polyester resin, etc. and other crosslinking agents, lubricants, abrasives, antistatic agents. , Etc.
  • Some magnetic layers have a multilayer structure. In some cases, a part of the multilayer is composed of a layer using a non-magnetic filler.
  • the base film As the base film, a polyester film is often used. In addition, polyethylene naphthalate, polyalamide and the like are also used.
  • the knock layer is composed of carbon black powder and the like, and a binder and an additive used for the magnetic layer.
  • the magnetic tape used in the present invention may have a configuration in which a magnetic layer is laminated on a base film, and the back layer may or may not be laminated. Also, the materials used for them are not specified.
  • a crushed product of a magnetic material-coated plastic can be obtained, for example, by treating a waste material such as a magnetic tape or a magnetic sheet with a crusher such as a tally cutter.
  • the size of the crushed product is determined by the size of the screen mesh provided on the rotary Although not particularly limited, a size of about 2 to 20 thigh squares (or diameters) is preferable.
  • the crushed product may be a magnetic tape or a magnetic sheet that has been previously formed into an irregular shape and then crushed, or may be a mixture of a crushed and crushed magnetic tape or a magnetic sheet. To make it uneven, insert a tape or sheet between the convex mold and the concave mold, and press-clamp.
  • the pressing press may be a flat mold or a roll mold, and may be continuously formed.
  • the crushed product may be a curled crushed product which is subjected to a heat treatment and formed into a curl shape.
  • a curl-like shape refers to a shape in which both ends are lifted up and a shape close to a circle in the case of short fragments, and a wavy fragment in the case of long fragments.
  • the debris may be exposed to an ambient temperature of 100 to 150 ° C.
  • the heating conditions can be appropriately set according to the shape of the crushed pieces, the throughput, and the like.
  • Said second sound absorbing material, the crushing products of the magnetic coating plastics, by adding a binder, apparent specific gravity 0.05 to .4, composed of molded ventilation resistance becomes the 3 ⁇ 90 dyn ⁇ S / cm 4 You can also.
  • a filler is mixed with a cut or pulverized crushed product, and the mixture is molded into a plate or block using a binder such as latex described below.
  • the filler for obtaining the molded article is not particularly limited, but fillers such as pulp, wood flour, and inorganic filler can be used.
  • the apparent specific gravity of a molded product or a filled crushed product from a crushed product should be in the range of 0.05 to 0.4, and a molded product or a filled product from a crushed product It is desirable to set the ventilation resistance of the crushed product in the range of 3 to 9 O dyn ⁇ S / cm 4 .
  • the sound absorption mechanism is based on the fact that sound waves penetrate into the sound absorber, the air inside the pores vibrates, and at that time, friction occurs between the air and the inner wall surface of the pores, and the acoustic energy becomes the heat energy. When the sound is converted and absorbed, it can be explained.
  • the apparent specific gravity is 0.05 or less or the ventilation resistance is 3 dyn ⁇ S / cm 4 or less, the resistance is too small and the friction with respect to the penetration of sound waves is slight.
  • the apparent specific gravity is 0.4 or more or the ventilation resistance is 90 dynS / cm 4 or more, This is because the pores are in a closed state, so that sound waves do not easily enter and friction does not easily occur. Therefore, favorable sound absorbing performance can be obtained within the above range.
  • the apparent specific gravity is in the range of 0.05 to 0.4, and the ventilation resistance is 3 to 90 dynS / cm
  • the binder include, but are not limited to, acrylic nitrile-butylene copolymer (NBR), vinyl acetate or vinyl acetate'ethylene copolymer (EVA), styrene-butadiene copolymer ( Latex such as SBR), polyacrylate and polyurethane are used.
  • NBR acrylic nitrile-butylene copolymer
  • EVA vinyl acetate or vinyl acetate'ethylene copolymer
  • Latex such as SBR
  • polyacrylate and polyurethane are used.
  • the crushed product In order to obtain a molded product having a certain shape such as a plate shape or a block shape from the crushed product, the crushed product must contain the above-mentioned filler, a binder such as latex, and, if necessary, a flame retardant material described later. Then, these may be blended using a liquid such as water, poured into a mold, and dewatered under pressure.
  • the heating temperature during pressure dehydration is not particularly limited, but is, for example, 100 ° C. or higher, and the pressure time is about several minutes to several hours.
  • the amount of the binder can be reduced to a minimum, and in some cases, even if there is no binder, the second sound absorbing material that can withstand use Can be obtained.
  • the mixing ratio of the crushed product, the filler, the binder, and the flame retardant is not particularly limited, but the filler is added to 100 parts by weight of the crushed product.
  • the binder is 0 to 10% by weight
  • the binder such as latex is 10 to 90% by weight
  • the flame retardant is 0 to 50% by weight.
  • the second sound absorbing material included in the soundproof panel according to the present invention does not necessarily need to include a filler and a flame retardant. Further, in the soundproofing panel according to the present invention in which the crushed product is filled in the air-permeable bag and is used as the second sound absorbing material in the panel, it is not necessary to use a binder such as latex.
  • the thickness of the second sound absorbing material is preferably about 10 to 200 bands. If the thickness is too thin, the sound absorbing performance tends to decrease.If the thickness is too thick, the manufacturing cost increases, and the thickness of the entire soundproof panel increases, which makes the transport and construction of the panel undesirably complicated. .
  • the thickness of the second sound absorbing material with respect to the thickness of the first sound absorbing material is preferably substantially the same, but is used at about 20 to 500%. It is not preferable that either of them is too thick or too thick from the viewpoint of improving the sound absorption characteristics.
  • first sound absorbing material and the second sound absorbing material having the above-described configuration are mounted between the front plate and the rear plate, and the first sound absorbing material is mounted on the front plate side, which is the sound source side, a soundproof panel having excellent sound absorbing performance can be obtained. Obtainable.
  • An air layer may be formed between the first sound absorbing material and the second sound absorbing material and / or between the second sound absorbing material and the back plate.
  • the soundproofing panel according to the present invention has the same or better sound absorption performance and excellent moisture resistance and water resistance as compared with the conventional soundproofing panel using glass beads or the like, and has the problems that glass beads etc. have (moisture absorption Or, as the amount of water absorption increases, the sound absorption performance decreases).
  • glass beads etc. have (moisture absorption Or, as the amount of water absorption increases, the sound absorption performance decreases).
  • magnetic tape waste can be used, garbage resources can be reused, which is excellent from the viewpoint of resource recovery and global environment.
  • the soundproof panel of the present invention uses the waste material of the magnetic tape or the like as the second sound absorbing material, the weight of the entire panel is light and economical. Therefore, it can be suitably used as a soundproofing panel for roads, railways, industrial facilities, and the like, particularly a soundproofing panel used on the lower surface of an elevated road.
  • FIG. 1 is a cross-sectional view of a soundproof panel according to one embodiment of the present invention
  • Figs. 2 (A) to (D) are front, rear, bottom, and side views of the soundproof panel shown in Fig. 1.
  • Fig. 3 is a perspective view of the keystone plate.
  • Figure 4 is a perspective view of the main part of the breathable bag
  • Figure 5 is a schematic diagram of an elevated road on which soundproofing panels will be installed.
  • the soundproof panel 2 has a front plate 4 arranged on the sound source side and a back plate 6 arranged on the non-sound source side.
  • the front plate 4 and the rear plate 6 are joined at predetermined intervals by frame plates 7 and 8 to form a casing in which a space is formed.
  • the means for joining these plates 4, 6, 7, 8 is not particularly limited, and spot welding, caulking welding, rivet connection or other means is employed.
  • the front plate 4 is made of an aluminum expanded metal having an aperture ratio of 30 to 80%.
  • the size of the front plate 4 is not particularly limited, in the present embodiment, it is the size of a (500 to 1000) marauder X (1000 to 2500) brain.
  • the rear plate 6 is made of, for example, a keystone plate made of a zinc plating iron plate having a thickness of 0.6, has the same size as the front plate 4, and has an uneven cross section as shown in FIG. It is not always necessary that the cross-sectional shape be uneven, but from the viewpoint of imparting a predetermined rigidity to the panel 2, the cross-sectional shape is preferable.
  • the frame plates 7 and 8 are made of a flat zinc plated steel plate.
  • the thickness t of the panel 2 is not particularly limited, but is 100 to 200 thighs in the present embodiment.
  • the first sound absorbing material 14 is disposed on the sound source side
  • the second sound absorbing material 15 is disposed on the opposite sound source side.
  • the first sound absorbing material 14 is, for example, a melamine foam resin (continuous (Bubbles). On the surface of the first sound absorbing material 14 (on the sound source side), a corrugated pattern as seen on the surface of a sponge scourer is formed.
  • the size of the unevenness is, for example, about 10 to 30 awake (the height, depth, and width of the unevenness).
  • the back surface of the first sound absorbing material 14 is flat, and the second sound absorbing material 15 is arranged in contact with the back surface of the first sound absorbing material 14 here.
  • the second sound absorbing material 15 is disposed inside the panel 2 in contact with the rear panel 6.
  • the distance between the first sound absorbing material 14 and the second sound absorbing material and between the second sound absorbing material 15 and the rear panel 6 There is no gap between them, and there is a gap whose width changes along the plane of the panel. In the present embodiment, such a gap is expected to cause a favorable result in the sound absorbing characteristics.
  • the second sound absorbing material 15 is composed of a crushed piece of magnetic tape and a breathable bag 18 containing these pieces.
  • a polyester nonwoven fabric having a basis weight of 30 to 100 g / m 2 is used as the breathable bag 18.
  • the air-permeable bag 18 in which the crushed pieces of the magnetic tape are stored has a plurality of partitioned storage portions 20, and each storage portion 20 includes a magnetic tape 20. Crushed pieces are stored.
  • the breathable bag 18 having the shape shown in FIG. 4 can be formed, for example, by sewing two nonwoven fabrics at a predetermined interval. Alternatively, one nonwoven fabric can be folded and sewn at predetermined intervals.
  • the second sound-absorbing material 15 is, for example, a magnetic tape coated with a polyester film as a base tape without a back layer as the magnetic material-coated plastic manufactured as follows. disrupted by Tarikatsu evening, obtaining a frame click area of about 0. l ⁇ 5 cm 2 a is crushed products. The crushed product is housed in a breathable bag made of a polyester nonwoven fabric having a basis weight of 30 to 100 g / m 2 to obtain a second sound absorbing material 15 according to the present embodiment.
  • the crushed product is filled into the air permeable bag so that the apparent specific gravity becomes 0.05 to 0.4 and the airflow resistance becomes 3 to 90 dyn ⁇ S / cm 4 .
  • the maximum thickness of the breathable bag 18 filled with the crushed product is 10 to 200 thighs.
  • the measurement of the airflow resistance is performed according to JIS-A6306.
  • the panel 2 having such a configuration is laid on the lower surface of the elevated road 30 so that the front panel 4 shown in FIG. 1 faces downward, which is the sound source side.
  • a road 32 is often formed below the elevated road 30, and the noise generated there hits the lower surface of the elevated road 30 and the sound is reflected. The noise was serious.
  • the soundproof panel 2 since the soundproof panel 2 is laid, noise generated on the lower road is absorbed by the soundproof panel 2 laid on the lower surface of the elevated road, and noise damage can be reduced.
  • the present embodiment compared to the conventional soundproof panel using glass wool or the like, it has the same or higher sound absorbing performance, is excellent in moisture resistance and water resistance, and has the problems (such as the moisture absorption or water absorption The sound absorption performance decreases as the amount increases).
  • garbage resources can be reused, which is excellent in terms of resource recovery and the global environment.
  • the soundproof panel 2 of the present embodiment uses the waste material of the magnetic tape or the like as the second sound absorbing material 15, the weight of the entire panel 2 is light and economical.
  • the first sound absorbing material 14 made of a foamed member is arranged on the sound source side
  • the second sound absorbing material 15 made of waste magnetic tape is arranged on the anti-sound source side. Since the soundproof panel is configured by using the soundproof panel, the sound absorption characteristics of the soundproof panel using the waste material of the magnetic tape can be further improved.
  • the surface of the first sound-absorbing material 14 does not necessarily need to have an uneven pattern.
  • the material of the first sound absorbing material 14 is not particularly limited.
  • the second sound absorbing material 15 is arranged inside the sound insulating panel 2 in contact with the back surface of the first sound absorbing material 14.
  • a layer may be provided.
  • the second sound absorbing material 15 and the back panel 6 may not be in contact with each other, and an air layer may be actively provided. However, as shown in Examples described later, it is preferable that such an air layer is not provided, so that the sound absorbing characteristics are better.
  • the soundproof panel 2 shown in FIGS. 1 to 4 was actually assembled.
  • As the front plate 4 an aluminum expanded metal (XS-42F) having an aperture ratio of 68% was used.
  • As the back plate 6 a 0.6 thigh thick zinc-plated steel keystone plate (an uneven height of 30 thighs) was used.
  • the first sound-absorbing material 14 an open-cell melamine foamed resin having a thickness of 50 m (Basotect made by BASF) was used.
  • the surface of the first sound absorbing material 14 was a flat surface on which no irregularities were formed.
  • a bag made of a nonwoven polyester fabric having a basis weight of 70 g / m 2 and having a shape shown in FIG. 4 was used as the breathable bag 18 of the second sound absorbing material 15.
  • Each of the storage portions 20 of the breathable bag 18 accommodated a crushed magnetic tape prepared as follows, and the opening of the storage portion 20 was closed by sewing.
  • the tape was crushed by a single click to obtain a crushed product having a flake area of about 0.3 cm 2 .
  • the crushed product was accommodated in each accommodation section 20 of the air-permeable bag 18 to obtain a second sound absorbing material 15.
  • the crushed product was filled into the air-permeable bag 18 so that the apparent specific gravity became 0.17 and the airflow resistance became 8.0 dyn ⁇ S / cm 4 .
  • the maximum thickness (thickness of the second sound absorbing material) of the breathable bag 18 filled with the crushed product was about 55 bandits.
  • the measurement of the ventilation resistance was performed according to JIS-A 6306.
  • the first sound absorbing material 14 and the second sound absorbing material 1 are placed between the front plate 4 and the rear plate 6 so that the front plate 4, the first sound absorbing material 14, the second sound absorbing material 15, and the rear plate 6 are in contact with each other. 5 and the frame plates 7, 8 and the front plate 4 and the rear plate 6 are rebated so that the thickness t of the panel 2 is 125 mm.
  • the plurality of soundproof panels 2 assembled in this manner the sound absorption characteristics were measured based on the oblique incidence sound absorption coefficient measurement method by the Ministry of Construction.
  • a plurality of panels 2 are placed on a floor of a room having a smooth concrete floor surface and a wall and ceiling structure having a sound absorbing or spacious structure capable of neglecting the influence of reflected sound.
  • Omm x 4730 spread all over the band
  • the front panel 4 side was facing up (sound source side).
  • the position on the circumference of the semicircular surface where the angle of the line from the floor center point is vertical The speakers were placed at 0 degrees, 15 degrees, 30 degrees, and 45 degrees along the circumference with a radius of 3 m from the 0 degree position in one direction. .
  • a microphone is referred to as the speaker at a position of 0 °, 15 °, 30 °, 45 ° in a direction opposite to the one direction from the 0 ° position along the circumference having a radius of 3 m.
  • the microphone at the 0-degree position was placed 2 m on the same axis as the speed at the 0-degree position. Then, a pulse sound was emitted from the lip, and the reflected sound that bounced off the center of the soundproofing panel was measured. The oblique incidence sound absorption coefficient was measured by comparing the reflected sound with the concrete floor surface.
  • the weighted calculation of the frequency characteristics of road traffic noise (obtained from the Acoustical Society of Japan, 50th volume, Vol. 3, No. 1 (1994)) is performed on the oblique incidence sound absorption coefficient at each incidence angle S obtained in this manner. After that, arithmetic averaging was performed to obtain the oblique incidence sound absorption coefficient.
  • Table 1 shows the results. As shown in Table 1, in this example, the oblique incidence sound absorption coefficient was 0.89.
  • an open-cell melamine foam resin having a thickness of 50 and having a corrugated shape having a depth and a width of 20 on its surface (on the sound source side) is formed.
  • a soundproof panel was assembled in the same manner as in Example 1 except that (BASOTEKT manufactured by BASF) was used, and the oblique incidence sound absorption coefficient was measured in the same manner as in Example 1.
  • Table 1 shows the results.
  • the oblique incidence sound absorption coefficient was 0.92. It was confirmed that it was further improved than in Example 1.
  • an air layer of 25 ran was positively provided between the first sound absorbing material 14 and the second sound absorbing material 15, and the thickness of the entire panel was set to 17 5 thighs.
  • a sound absorbing material 14 50-thigh open-cell melamine foamed resin with a depth and width of 2SF ⁇ on its surface (sound source side) (BASF, BASF made by BASF)
  • BASF sound source side
  • BASF BASF made by BASF
  • Example 1 has a sound absorption coefficient of 0.85 or more, has satisfactory sound absorption characteristics, but has a higher sound absorption coefficient in Example 1 in which an active air layer is not formed.
  • an air layer of 25 mm was positively provided between the second sound absorbing material 15 and the back plate, and the thickness of the entire panel was made 17 5 female, and the first sound absorbing material 14 Except for using a 50-thigh open-cell melamine foamed resin (BASF made by BASF) on its surface (on the sound source side), a wavy irregular shape with a depth and width of 20 is formed.
  • BASF open-cell melamine foamed resin
  • Example 1 shows the results.
  • the oblique incidence sound absorption coefficient was 0.88.
  • Example 1 has a sound absorption coefficient of 0.85 or more, has satisfactory sound absorption characteristics, but has a higher sound absorption coefficient in Example 1 in which an active air layer is not formed.
  • the first sound absorbing material 14 has a depth and a width on its surface (on the sound source side).
  • the soundproof panel was assembled in the same manner as in Example 1 except that the open-cell urethane foam resin (Nisshinbo 36 kg / m 3 ) with a thickness of 50 thighs and a corrugated shape formed by 20 bands was used.
  • the oblique incidence sound absorption coefficient was measured in the same manner as in Example 1.
  • Table 1 shows the results.
  • the oblique incidence sound absorption coefficient was 0.86. Although it has a sound absorption coefficient of 0.85 or more and satisfactory sound absorption characteristics, it was confirmed that Example 1 using a melamine foamed resin had a higher sound absorption coefficient.
  • an air layer of 50 organs is actively provided between the first sound absorbing material 14 and the second sound absorbing material 15, and the open-cell melamine having a thickness of 25 thighs is used as the first sound absorbing material 14.
  • a soundproof panel was assembled in the same manner as in Example 1 except that a foamed resin (BASOTEKT manufactured by BASF) was used, and the oblique incidence sound absorption coefficient was measured in the same manner as in Example 1.
  • Table 1 shows the results.
  • the oblique incidence sound absorption coefficient was 0.85. It has a sound absorption coefficient of 0.85 or more, confirming that it has satisfactory sound absorption characteristics.
  • an air layer of 25 thighs is actively provided between the first sound absorbing material 14 and the second sound absorbing material 15 so that the thickness of the entire panel is 175 mm, and the first sound absorbing material 14 is
  • the surface (on the sound source side) is made of open-cell melamine foam resin (BASF vasotect made by BASF) with a thickness of 75 thighs and a corrugated shape with a depth and width of 20 thighs.
  • BASF vasotect made by BASF open-cell melamine foam resin
  • a soundproof panel was assembled in the same manner as in Example 1 except that a material having a basis weight of 50 g / m 2 was used, and the oblique incidence sound absorption coefficient was measured in the same manner as in Example 1.
  • Table 1 shows the results.
  • the oblique incidence sound absorption coefficient was 0.91. It is considered that the reason why the sound absorption coefficient was further improved as compared with Example 1 is that the material of the breathable bag 18 changed and the airflow resistance changed.
  • an open-cell melamine foam resin (made by BASF) having a thickness of 50 and having a wavy uneven shape having a depth and a width of 20 on its surface (on the sound source side) is formed.
  • Table 1 shows the results.
  • the oblique incidence sound absorption coefficient was 0.96.
  • the reason why the sound absorption coefficient was further improved as compared with Example 1 is that, in addition to the formation of the corrugated unevenness on the surface of the first sound absorbing material, the material of the breathable bag 18 changed, and the airflow resistance was reduced. Probably because of the change.
  • Comparative Example 1 only a continuous foam type melamine foam resin (BASF made by BASF) with a thickness of 75 thighs was used as the sound absorbing material disposed in the soundproof panel.
  • BASF made by BASF
  • a soundproof panel was assembled in the same manner as in Example 1 except that a 25 ⁇ air layer was formed between the sound absorbing material and the back plate without mounting a material corresponding to the sound absorbing material (14).
  • the oblique incidence sound absorption coefficient was measured in the same manner as in Example 1. Table 1 shows the results. The oblique incidence sound absorption coefficient was 0.68.
  • Example 2 only the material corresponding to the second sound absorbing material 14 using the crushed magnetic tape used in Example 1 was used between the front plate 4 and the rear plate 6 as the sound absorbing material disposed in the soundproof panel. Then, a soundproof panel was assembled in the same manner as in Example 1 except that an air layer was not actively provided, and oblique incidence sound absorption was measured in the same manner as in Example 1. Table 1 shows the results. The oblique incidence sound absorption coefficient was 0.71.
  • Comparative Example 3 only the open-cell melamine foam resin (BASF made by BASF) having a thickness of 25 thighs and a wavy uneven shape having a depth and a width of 20 thighs was used as the sound-absorbing material disposed in the soundproof panel. Except that an air layer of 25 thighs was formed between the sound absorbing material and the back plate without attaching a material corresponding to the second sound absorbing material 14 using the magnetic tape crushed product shown in Example 1 A soundproof panel was assembled in the same manner as in Example 1, and the oblique incidence sound absorption coefficient was measured in the same manner as in Example 1.
  • BASF open-cell melamine foam resin
  • Table 1 shows the results.
  • the oblique incidence sound absorption coefficient was 0.65.
  • the soundproof panel is configured by disposing the first sound-absorbing material made of a foamed member on the sound source side and disposing waste magnetic tape and the like on the anti-sound source side. In addition, it is possible to further improve the sound absorption characteristics of the soundproof panel using the waste material of the magnetic tape or the like.
  • Example 4 the arrangement order of the first sound absorbing material 14 and the second sound absorbing material 15 used in Example 1 was reversed from that in Example 1. That is, the second sound absorbing material 15 using a magnetic tape was arranged on the front plate side, which is the sound source side, and the first sound absorbing agent 14 made of foamed resin was arranged on the back plate side, which was the anti-sound source side.
  • the first sound absorbing material 14 an open-cell melamine foam resin (BASF made by BASF) with a thickness of 75 thighs having a corrugated shape having a depth and width of 2 O mm is used, and the second sound absorbing material is used.
  • BASF open-cell melamine foam resin
  • a soundproof panel was assembled in the same manner as in Example 1 except that a material having a basis weight of 50 g / m 2 was used as the air-permeable bag of the material, and the oblique incidence sound absorption coefficient was determined in the same manner as in Example 1. Was measured.
  • Table 1 shows the results.
  • the oblique incidence sound absorption coefficient was 0.75.
  • the soundproof panel is configured by disposing the first sound-absorbing material made of a foamed member on the sound source side and disposing waste magnetic tape and the like on the anti-sound source side.
  • the soundproof panel is configured by disposing the first sound-absorbing material made of a foamed member on the sound source side and disposing waste magnetic tape and the like on the anti-sound source side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention concerne un panneau insonorisant comprenant une tôle avant (4), placée sur le côté où se trouve la source de bruit, une tôle arrière (6), placée sur le côté opposé à celui où se trouve la source de bruit, et un matériau absorbant le bruit, placé entre la tôle avant (4) et la tôle arrière (6). Le matériau insonorisant comprend un premier matériau absorbant le bruit (14), constitué d'une mousse, etc., et placé sur le côté de la tôle avant (4), ainsi qu'un second matériau absorbant le bruit (15) comprenant essentiellement des produits pulvérisés de plastique de revêtement à corps magnétiques, et placé sur le côté de la tôle arrière (6). Ainsi, on peut améliorer les performances d'insonorisation du panneau insonorisant pour lequel des déchets de plastique de revêtement à corps magnétiques sont utilisés efficacement, et un tel panneau peut en particulier être utilisé pour recouvrir la surface inférieure de routes surélevées.
PCT/JP1998/000407 1997-02-12 1998-01-30 Panneau insonorisant WO1998036135A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9043037A JPH10219868A (ja) 1997-02-12 1997-02-12 防音パネル
JP9/43037 1997-02-12

Publications (1)

Publication Number Publication Date
WO1998036135A1 true WO1998036135A1 (fr) 1998-08-20

Family

ID=12652725

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/000407 WO1998036135A1 (fr) 1997-02-12 1998-01-30 Panneau insonorisant

Country Status (3)

Country Link
JP (1) JPH10219868A (fr)
TW (1) TW356547B (fr)
WO (1) WO1998036135A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000015700A1 (fr) * 1998-09-17 2000-03-23 The Dow Chemical Company Polyolefines a alveoles ouvertes acoustiques et procede de fabrication
KR100453481B1 (ko) * 2001-06-20 2004-10-20 주식회사 거성종합건축사사무소 고무튜브가 삽입되는 철제거푸집
JP2007101959A (ja) * 2005-10-05 2007-04-19 Kobe Steel Ltd 防音パネルおよび防音壁
JP4899090B2 (ja) * 2006-04-27 2012-03-21 戸田建設株式会社 吸音構造
CN104001608A (zh) * 2014-05-19 2014-08-27 江西理工大学 一种适用于煤磨机的隔声装置及方法
JP2016223269A (ja) * 2015-06-04 2016-12-28 旭ビルウォール株式会社 鉄道用吸音体
CN112030735A (zh) * 2020-09-14 2020-12-04 浙江圣纳智能科技有限公司 一种防堵塞桥梁排污渠

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914032U (fr) * 1972-05-02 1974-02-06
JPS51112310U (fr) * 1975-03-10 1976-09-10
JPS532895Y2 (fr) * 1973-09-21 1978-01-25
JPS5931930B2 (ja) * 1978-06-26 1984-08-06 積水樹脂株式会社 吸音板の製造方法
JPS6273012U (fr) * 1985-10-25 1987-05-11
JPS6329768Y2 (fr) * 1983-10-29 1988-08-10
JPH0713574A (ja) * 1993-06-07 1995-01-17 Zeon Kasei Co Ltd 防音材

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914032U (fr) * 1972-05-02 1974-02-06
JPS532895Y2 (fr) * 1973-09-21 1978-01-25
JPS51112310U (fr) * 1975-03-10 1976-09-10
JPS5931930B2 (ja) * 1978-06-26 1984-08-06 積水樹脂株式会社 吸音板の製造方法
JPS6329768Y2 (fr) * 1983-10-29 1988-08-10
JPS6273012U (fr) * 1985-10-25 1987-05-11
JPH0713574A (ja) * 1993-06-07 1995-01-17 Zeon Kasei Co Ltd 防音材

Also Published As

Publication number Publication date
TW356547B (en) 1999-04-21
JPH10219868A (ja) 1998-08-18

Similar Documents

Publication Publication Date Title
WO1995032496A1 (fr) Panneau permettant de realiser une paroi d'insonorisation
JP2866860B2 (ja) 防音材
US8770344B2 (en) Acoustic panel
EP2491194B1 (fr) Panneau acoustique
EP2311028B1 (fr) Feuille d'insonorisation multicouche et methode d'absorption du son
RU2639759C2 (ru) Комбинированная звукопоглощающая панель
JP2004126487A (ja) ハニカム材層が空気層と発泡体層の複合構造層からなる吸音構造体
WO1998036135A1 (fr) Panneau insonorisant
JP2001184076A (ja) 吸音構造体
RU2525709C1 (ru) Универсальный оболочечный шумопоглощающий модуль
JPH0617493A (ja) 断熱遮音パネル
JPS6140941A (ja) 防音材
JP6887661B2 (ja) 吸音装置
JP2001105521A (ja) 吸音構造体
JP2003122373A (ja) 車両用防音材及びその製造方法
Subramonian et al. Acoustics and forming of novel polyolefin blend foams
KR100239621B1 (ko) 차음벽 구성용 판넬
JPH04266942A (ja) 多孔質材及び吸音パネル
JP2004359043A (ja) 車両用インシュレータ
RU2716043C1 (ru) Низкошумное техническое помещение
JP3072026B2 (ja) 吸音材
JPH09111909A (ja) 壁パネル
KR20200004039A (ko) 삼각기둥 프리즘 형상의 프레스 다이를 이용한 미세타공 흡음판 및 이를 포함하는 적층형 미세타공 흡음장치
KR20110013860A (ko) 건축용 이중 샌드위치 흡음패널
JPH07219554A (ja) 防音材

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase