JPH10264293A - Soundproofing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soundproofing material effective for an equipment or a building to be applied by ane excess impact by incorporating sound absorbing properties, sound insulation properties and vibration-damping properties, and effectively reducing air propagating sound and solid propagating sound. SOLUTION: The soundproofing material comprises a layer 2 obtained by drying paint containing 50 to 430 pts.mass of inorganic filler and 10 to 100 pts.mass of synthetic resin powder to 100 pts.mass of solid content of vehicle made of asphalt emulsion or asphalt emulsion and synthetic resin emulsion, and a porous layer glass wool, rock wool or urethane foam) 1, or, in addition to the both layers, a support plate (wood plywood, ordinary steel sheet, stainless steel sheet, aluminum alloy plate or resin plate) 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a house, an apartment,
Architectural structures such as condominiums and office buildings, elevated roads,
Occurs in various structures such as viaducts, automobiles, railway vehicles, industrial vehicles, construction machinery, various machinery such as industrial machinery, precision equipment, home appliances, OA equipment, and other structures, equipment, and machinery. The present invention relates to a soundproofing material used for reducing noise.

[0002]

2. Description of the Related Art Conventionally, various soundproofing materials such as a sound absorbing material, a sound insulating material, a vibration damping material, and a vibration damping material have been used to reduce noise in the above various devices and structures.

[0003] That is, noise is classified into air-borne sound and solid-borne sound according to the transmission path of the noise. Therefore, when taking measures against noise, it is necessary to select a soundproofing material to be used according to the type of the noise. is there. For example, a sound-absorbing material to absorb airborne sound, a sound-insulating material to reflect, a vibration-damping material to absorb solid-borne sound, a vibration-proof material to reflect, It is suitable.

Conventionally, these soundproofing materials have been used independently as separate materials. However, the noise transmission path is complicated and it is difficult to specify it. Therefore, the implementation of optimal soundproofing measures and the selection of optimal soundproofing materials require advanced knowledge and close investigation and analysis. If an erroneous soundproofing material is selected and soundproofing measures are taken, not only the noise reduction effect cannot be obtained but also the noise may be increased.

[0005] As an attempt to reduce both airborne sound and solid-borne sound with the same material, for example, Japanese Unexamined Patent Publication No.
Japanese Patent Publication No. 219554 proposes a soundproofing material in which a granular material having a large specific gravity of about 1 to 4 mm in diameter is embedded between a porous foam material and a sound absorbing material. However, in this soundproofing material, although the sound absorbing property is exhibited by the sound absorbing material, since the granular material is merely embedded near the surface of the porous foam material, 1) the granular material cannot sufficiently attenuate the vibration, Poor vibration damping properties, 2) Poor sound insulation due to the presence of voids between the granular materials, 3) Degradation of the sound insulation performance due to falling off or diffusion of the granular materials,
There are problems such as.

Further, Japanese Patent Application Laid-Open Nos. Hei 7-266487, Hei 7-266488, and Hei 7-314617
In the publication, a two-layer or three-layer structure in which a sheet made of a nonwoven fabric or the like and a sheet formed by mixing a metal powder, carbon black or the like in an organic binder such as rubber or synthetic resin and the like are molded by pressure is integrated. We have proposed a soundproof sheet consisting of These have a certain degree of sound insulation and vibration damping properties, but have a thin sheet having a thickness of 1.2 mm, have insufficient sound insulation and vibration damping properties, and have almost no sound absorption properties.

Further, Japanese Patent Application Laid-Open No. 9-29873 discloses a closed-cell foam layer on a sheet-like base material containing an iron-based or light-metal-based filler and a binder comprising an ethylene-based copolymer, asphalt and a petroleum resin. We have proposed a vibration-damping and sound-insulating sheet laminated with. This sheet is installed on the floor of a general house for the purpose of vibration damping and sound insulation in a general house. The closed cell foam layer as a buffer layer mainly has a shock absorbing function, and the binder is The binder and the filler in the binder have a part of a vibration-damping / sound-insulating function, in addition to having an adhesive function between the layer and the house structure. As described above, since this sheet is intended for use in a general house, the sheet does not always have a sufficient soundproofing effect on objects to which a large impact is applied such as industrial equipment, various vehicles, viaducts and elevated roads.

[0008]

SUMMARY OF THE INVENTION In view of the above-mentioned points, the present invention has a sound absorbing property, a sound insulating property and a vibration damping property, and is effective in reducing airborne sound and solidborne sound with one material. It is also an object of the present invention to propose a soundproofing material that is effective for equipment and buildings to which a large impact is applied, and that exhibits comprehensive and excellent soundproofing performance against various noises in a wide range of fields.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above objects, the soundproofing material of the present invention comprises (1) an inorganic filler with respect to 100 parts by weight of a solid content of an asphalt emulsion or a vehicle comprising an asphalt emulsion and a synthetic resin emulsion. Lumber 5
A layer obtained by drying a coating composed of 0 to 430 parts by mass and 10 to 100 parts by mass of a synthetic resin powder; and a layer having a porous layer. (2) In addition to these layers, And a support plate.

In the present invention, the layer obtained by drying the asphalt emulsion, or a paint comprising an asphalt emulsion and a synthetic resin emulsion, an inorganic filler and a synthetic resin powder, forms a layer having a viscoelasticity and friction inside the material. The vibration damping layer converts the vibration energy into heat energy to attenuate the vibration, thereby reducing the noise due to the vibration and the solid-borne sound.

[0011] The asphalt emulsion, which is a component of the paint for forming the vibration-damping layer, or a vehicle comprising an asphalt emulsion and a synthetic resin emulsion, an inorganic filler and a synthetic resin powder, are mixed in the above proportions. It is provided in the form of a loose damping paint and is used for forming a layer.

In general, a vibration damping paint is a composition in which a layer (coating) forming component such as a synthetic resin is dissolved or dispersed in a solvent and mixed with an inorganic filler. There are an organic solvent-based damping paint and a water-based damping paint using water, but a water-based damping paint is preferred from the viewpoint of safety and environment. As the water-based damping paint, there are water-soluble resin-based, synthetic resin emulsion-based, asphalt emulsion-based, etc., but from the viewpoint of damping properties, adhesion, adhesiveness, etc., the asphalt emulsion-based or synthetic resin emulsion-based is used. preferable. Above all, asphalt emulsion-based emulsions are excellent in water resistance and acid resistance, and are excellent in effective utilization of petroleum fractions (unused resources) and economical efficiency. Furthermore, in terms of damping performance, asphalt emulsion-based damping paints have slightly lower maximum damping performance than synthetic resin emulsion-based damping paints, but have a small change in damping performance with respect to temperature. There is a tendency that vibration damping performance is obtained in the region. On the other hand, as compared with the asphalt emulsion type, the synthetic resin emulsion-based damping paint has a large change in damping performance with respect to temperature and the effective temperature range is narrow, but the maximum value of the damping performance is large. Because of this tendency, asphalt emulsions can be used alone or as a mixture of asphalt emulsions and synthetic resin emulsions depending on the purpose and application.

The present invention has been made by paying attention to the technology of using this asphalt emulsion alone or mixing it with a synthetic resin emulsion.

The asphalt emulsion used as the vehicle of the present invention is obtained by emulsifying or dispersing single or two or more kinds of petroleum asphalts such as straight asphalt and blown asphalt in water. Although (solid content) is not particularly limited, it is 30 to 70.
% By mass is preferred.

The vehicle of the present invention may be one wherein the above-mentioned asphalt emulsion contains a synthetic resin emulsion. The synthetic resin emulsion used in the present invention is obtained by emulsifying and dispersing a synthetic resin as a main component in water by a method such as emulsion polymerization, and the content (solid content) of the main component is not particularly limited. However, 30 to 70% by mass is preferable. Examples of the synthetic resin emulsion include an acrylate copolymer, a styrene-acrylate copolymer, a vinyl acetate polymer, an acryl-vinyl acetate copolymer, a vinyl chloride polymer, a vinyl chloride-acryl copolymer, and a chloride. Emulsions such as a vinylidene polymer, a butadiene polymer, a styrene-butadiene copolymer, and an acrylonitrile-butadiene copolymer are exemplified. However, an emulsion of an acrylic ester copolymer or a styrene-acrylic ester copolymer is preferred from the viewpoint of adhesion, adhesion, and vibration damping properties.

The acrylate copolymer includes methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-
Copolymers combining two or more selected from butyl acrylate, isobutyl acrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, benzyl acrylate, tetracyclododecyl acrylate, norbornyl acrylate, and vinyl toluene, acrylonitrile, and methacrylonitrile And copolymers with other copolymerizable monomers such as vinyl acetate. Preferred are copolymers obtained by combining two or more selected from ethyl acrylate, n-butyl acrylate, isobutyl acrylate and 2-ethylhexyl acrylate. It is united.

Examples of the styrene-acrylate copolymer include a copolymer of styrene and one or more acrylates selected from the above, preferably a copolymer of styrene and 2-ethylhexyl acrylate. It is.

Here, the glass transition temperature of the synthetic resin which is the main component of the synthetic resin emulsion is not particularly limited.
-50 to 40 ° C, preferably -40 to 20 ° C, is suitable. If the temperature is lower than -50 ° C, the coating film becomes soft at room temperature, and the vibration damping property tends to decrease or the surface of the coating film tends to become sticky. If the temperature exceeds 40 ° C, the coating film becomes too hard at room temperature. This is because there is a tendency that the adhesiveness is reduced and cracks are generated during drying.

When a synthetic resin emulsion and an asphalt emulsion are used in combination, the mixing ratio thereof is generally 5:95 to 95: 5, preferably 20:80, by mass ratio.
~ 80: 20.

Examples of the inorganic fillers to be added to the above-described vehicle include inorganic fillers such as calcium carbonate, barium sulfate, kaolin, clay, talc, mica, diatomaceous earth, alumina, gypsum, cement, shirasu powder and glass powder. These may be used alone or in combination of two or more. However, in terms of vibration damping properties, raw material cost, paint stability, coating film adhesion, etc., use calcium carbonate alone or in combination with calcium carbonate and two or more other inorganic fillers. Is preferred.

The particle size of the inorganic filler is not particularly limited.
When the average particle diameter is large, the storage stability of the coating material and the spray coating property tend to deteriorate, and when the average particle diameter is small, the dispersibility of the filler tends to deteriorate.
It is 300 μm, preferably 1-150 μm.

Examples of the synthetic resin powder to be mixed with the above-mentioned coloring agent together with the above-mentioned inorganic filler include alkyd resin, epoxy resin, silicone resin, phenol resin, polyester resin, acrylic resin, acetal resin, polyethylene resin and polyether resin. , A polycarbonate resin, a polystyrene resin, a polypropylene resin, a polyamide resin, and the like, and these may be used alone.
More than one species may be used in combination. However, it is preferable to use the polyester resin powder alone, or to use the polyester resin powder in combination with two or more kinds of other synthetic resin powders in view of the stability of the paint, the adhesion of the coating film, and the impact absorption.

As the polyester resin powder, for example,
Polyethylene terephthalate resin, polypropylene terephthalate resin, polybutylene terephthalate resin, polyhexamethylene terephthalate resin, polycyclohexane 1,4-dimethylol terephthalate resin, and part or all of the terephthalic acid or glycol component of these polyester resins is isophthalic acid, Phthalic acid,
Powders such as those replaced with other acid components such as methyl terephthalic acid and methyl isophthalic acid or glycol components such as trimethylene glycol, tetramethylene glycol, hexamethylene glycol, and diethylene glycol are exemplified.

The particle size of the synthetic resin powder is not particularly limited. However, if the average particle size is large, the storage stability and spray coatability of the coating tend to deteriorate, and if the average particle size is small, the dispersibility tends to deteriorate. Even if it is too large or too small, good impact absorption cannot be ensured, so the average particle size is generally 0.1 to 300 μm, preferably 1 to 15 μm.
0 μm.

In the present invention, the compounding ratio of the damping paint for forming the damping layer is such that the inorganic filler is 50 to 430 parts by mass, preferably 50 to 40 parts by mass, based on 100 parts by mass of the solid content of the vehicle.
0 parts by mass, more preferably 70 to 300 parts by mass,
Also, the synthetic resin powder is 10 to 100 parts by mass, preferably 1 to 100 parts by mass.
It is 0 to 60 parts by mass, more preferably 20 to 40 parts by mass.

If the amounts of the inorganic filler and the synthetic resin powder are too large relative to the vehicle, the amount of the vehicle becomes relatively small, and the viscosity of the paint becomes too high, so that the storage stability decreases. Not only does the coating property such as spray coating, brush coating or roll coating when forming a vibration damping layer described later, sheet forming property or impregnation property deteriorate, but also the base material (porous layer, support, etc.) Adhesion and adhesion to coatings, adherends, impregnations, etc.) decrease, and the flexibility and strength of the coating film also decrease. Conversely, if the amounts of the inorganic filler and the synthetic resin powder are too small, the amount of the vehicle will be relatively large, and the shock absorption as well as the vibration damping properties will be reduced. In addition, the amount of the inorganic filler and the amount of the synthetic resin powder are extremely important for vibration damping performance. If the amount of the synthetic resin powder is too small relative to the amount of the inorganic filler, the amount of the inorganic filler becomes relatively large. In addition, the storage stability of the paint decreases, and it becomes difficult to secure the shock absorption, so that not only does the damping property decrease, but also the weather resistance, chemical resistance, impact resistance and the like decrease. Conversely, if the amount of the synthetic resin powder is too large relative to the amount of the inorganic filler, the amount of the inorganic filler becomes relatively small, and it becomes difficult to secure the shock absorption, and the vibration damping property is reduced. Therefore, forming a good dry coating film,
In order to obtain excellent storage stability, paintability, adhesion and good vibration damping properties, it is important that the blending amount of the coloring agent, inorganic filler, and synthetic resin powder is within the above range. is there.

The vibration damping paint for forming the vibration damping layer of the present invention includes:
If necessary, other additives, for example, a dispersant, a viscosity modifier, an antifreezing agent, a stabilizer, an anti-skinning agent, a rust inhibitor, a coloring agent, and the like can be added. Can also be diluted. This vibration damping paint can be prepared by mixing the above-mentioned components and other additives to be added as necessary at room temperature, and therefore, the synthetic resin powder must be dissolved (melted). Instead, it exists as a powder in the vibration-damping layer obtained by drying the vibration-damping paint.

The thickness of the vibration damping layer is not particularly limited. If it is too thin, drying at the time of forming the layer is fast, but sufficient vibration damping property cannot be obtained. Conversely, if it is too thick, the vibration damping property is improved. However, not only takes a long time to dry when forming the layer, but also there is a problem that cracks occur during drying.
m, preferably about 0.05 to 3 mm.

The porous layer constituting the soundproofing material of the present invention together with the above-mentioned vibration-damping layer allows the sound energy incident on the layer to be compressed, expanded, reflected, heat-conducted, etc. by the voids in the layer and the solid material. , Converts the heat energy into heat energy, attenuates and absorbs it, and reduces noise and airborne sound.

The porous layer has a large number of gaps and air bubbles in the layer and has air permeability, and is formed by knitting or weaving organic / inorganic long fibers into a cloth, organic / inorganic long fibers. Short fibers entangled and formed into a plate with a binder, short fibers / long fibers planted / sprayed, polymer materials / inorganic materials foamed, other polymer materials /
An inorganic material is hardened so as to form a gap. Specifically, those composed of glass wool, rock wool, slag wool, urethane foam, fired rock, wood wool cement board, wood chip cement, etc. are mentioned, but from the viewpoint of sound absorption, workability, economy, etc., Glass wool, rock wool, at least one selected from urethane foam, having an apparent density of 10 to 100 kg
/ M ³ are preferred.

The thickness of the porous material is not particularly limited.
10 to 100 mm, preferably 20 to 8 in terms of sound absorption
0 mm is suitable. If the thickness is less than 10 mm, the sound absorbing property, especially the sound absorbing property for low frequency sound is reduced. If the thickness exceeds 100 mm, the sound absorbing property is improved, but the thickness of the entire soundproofing material is increased, so that the installation space is increased and the soundproofing is increased. There is a case where the space other than the material becomes small and the practicality is inferior.

Further, the soundproofing material of the present invention may be constituted by combining a support plate with the above-mentioned vibration damping layer and porous layer. In addition to the effect of improving sound insulation, this support plate vibrates due to airborne sound and solid-borne sound.
By resonating, the energy of sound is converted into the energy of vibration. This vibration is attenuated by the vibration damping layer, so that noise can be effectively reduced.

Examples of the support plate include a wooden plywood, a steel plate, a stainless steel plate, an aluminum alloy plate, a resin plate and the like, and these may be used alone or in combination of two or more. The thickness of the support plate is not particularly limited,
0.1-5 mm, preferably 0.2-3 mm, is suitable. If the thickness is less than 0.1 mm, the sound insulating property is reduced, and the flexibility is increased to make resonance difficult, and it is difficult to convert sound energy into vibration energy. If it exceeds 5 mm, although the sound insulation is improved, the damping effect of the damping layer is impaired, so that the noise reduction effect is reduced as a whole.

The soundproofing material of the present invention can be prepared, for example, by applying a vibration damping paint to the surface of a porous layer and drying it to form a vibration damping layer, or by damping the surface of a porous layer (or a support plate). It can be manufactured by applying a paint, placing a support plate (or a porous layer) thereon, and drying it to form a vibration damping layer. In addition, the damping paint is formed into a sheet by a method such as coating, or is impregnated into a nonwoven fabric or the like to form a sheet. It can also be manufactured by bonding to a support plate.

When the nonwoven fabric is impregnated into a nonwoven fabric and formed into a sheet, the nonwoven fabric may be made of organic fibers such as cotton, rayon, polyester, polypropylene, nylon, acrylic, vinylon, pulp, inorganic fibers such as glass, and woven fabrics. Cloth or knitted fabric can be used. The thickness of this sheet is determined by impregnating the damping paint into a nonwoven fabric or the like and drying the sheet. The thickness of the sheet is equal to the thickness of the above-described damping layer (about 0.01 to 5 mm, preferably about 0.05 to 3 mm). ). Further, the impregnation amount of the damping paint, the density of the sheet after drying is 0.5 to
An amount of about 3.0 g / cm ³ is suitable.

In order to apply the damping paint to the surface of the porous layer or the support plate, for example, air spray, airless spray,
Conventional methods such as brush coating, spatula coating, roll coating, roll coater, blade coater and the like can be employed. Further, in order to form the damping paint into a sheet, for example, the damping paint is applied on a release support by a normal various coating method, or the damping paint is poured into a mold having a predetermined size and dried. Ordinary techniques such as removal of the releasable support or the mold can be employed. Then, in order to impregnate the nonwoven fabric or the like, a usual method such as dipping of the nonwoven fabric or the like into the damping paint tank or a method of applying the damping paint to the nonwoven fabric or the like can be adopted. In addition, as a drying method of the damping paint, for example, a method such as natural drying, hot air drying, infrared / far infrared drying, and electric furnace drying can be adopted.

The combination of the above-mentioned vibration damping layer and porous layer is as follows:
For example, (a) a combination of one damping layer and one porous layer, (b) a combination of a plurality of damping layers and porous layers of the same or different types, C) There are a plurality of vibration damping layers of the same type or different types stacked on top of one another, a combination of a plurality of porous layers of the same type or different types of stacked layers on top of each other, or a combination of a single porous layer.

The combination of these layers and the support plate is also arbitrary, and preferred examples are the porous layer 1 / damping layer 2 / support plate 3 shown in FIG. 1 and the porous layer shown in FIG. 1 / support plate 3 / damping layer 2, porous layer shown in FIG. 3 / damping layer 2 / support plate 3 / damping layer 2, porous layer 1 / damping layer 2 / shown in FIG.
Support plate 3 / damping layer 2 / porous layer 1, porous layer 1 / damping layer 2 / support plate 3 / damping layer 2 / porous layer 1 / damping layer 2 / support plate 3 shown in FIG. / Damping layer 2, further illustration is omitted,
The porous layer 1, the vibration damping layer 2, and the support plate 3 may be, for example, those in which a plurality of layers are overlapped as described above.

[0039]

【Example】

<Preparation of water-based damping paint> The components shown in Tables 1 and 2 were mixed at the mixing ratio shown in the same table to prepare paints A to F.

<Evaluation of Adhesion Property> The paints A to F were coated with a thickness of 0.8.
mm steel plate (SPCC-S manufactured by Nippon Test Panel Industries, Ltd.)
B cold-rolled steel sheet) was coated on one side so that the film thickness after drying was 1 mm, and dried in a constant temperature bath at 20 ° C. and 65% humidity for 10 days to obtain a test piece. At 1
After making a cut in a 0 × 10 grid pattern with a knife until the base material (steel plate) is reached, the cellophane tape was pressed and the tape was peeled off at a stretch. ○), even one of which was peeled was rejected (×), and the results are shown in Tables 1-2.

<Preparation of Vibration Suppression Layer (Sheet)> Using the paint A, apply it on a release paper so that the dry film has a thickness of 1 mm.
After drying, the release paper was removed to prepare a sheet X. Similarly, on a release paper, a thickness of 1 mm and an apparent density of 0.25 g /
A nonwoven fabric made of a polyester fiber of ³ cm ³ was placed, impregnated with the coating material A, dried, and the release paper was removed to prepare a sheet Y. The density of the sheet Y was 1.2 g / cm ³ .

<Evaluation of vibration damping performance>
One side of a 00 mm, 25 mm wide, 0.8 mm thick electrodeposited coated steel plate (SPCC-SB cold rolled steel plate manufactured by Nippon Test Panel Kogyo Co., Ltd.) was applied so that the film thickness after drying was about 2 mm. , A test piece prepared by drying at room temperature and sheets XY were bonded to one surface of the same steel plate (SPCC-SB cold-rolled steel plate manufactured by Nippon Test Panel Kogyo Co., Ltd.) using an adhesive. About 0 and 60 ° C about a test piece,
The loss factor was measured by the central excitation half width method,
The loss coefficient at 0 Hz was measured, and the results are shown in FIG.
To F) and Table 3 (measurements for sheets XY). In addition, the larger the value of this loss coefficient is,
This means that the damping performance is excellent.

<Preparation of Soundproofing Materials 1 to 20> Porous layers shown in Tables 4 to 7 (size of A4 plate of about 210 × 300 mm)
The paints A to F are applied on the combinations in the combinations shown in the table so as to have a dry thickness shown in the table, and the damping sheets X to Y are affixed using an adhesive in the combinations shown in the table, and are soundproofed. Materials 1-20 (Examples 1-20) were prepared.

<Preparation of Soundproof Materials 21 to 34> Tables 8 to 10
The coatings A to F are applied in a combination shown in the same table on a support plate (size of an A4 plate having a size of about 210 × 300 mm) shown in FIG. When the coatings A to F are applied, a porous layer having the same size as the support plate is bonded without using an adhesive, and when the vibration damping sheets X to Y are bonded, an adhesive is used. Then, soundproofing materials 21 to 34 (Examples 21 to 34) having the structure shown in FIGS. 1 to 5 were prepared.

<Preparation of Comparative Soundproofing Materials 1 to 4> Comparative soundproofing materials (Comparative Examples 1 to 4) were prepared in the same manner as the soundproofing materials 1 to 34 except that the combinations shown in Table 11 were used.

<Evaluation of Soundproofing Performance> The soundproofing materials 1 to 34 and the comparative soundproofing materials 1 to 4 (size of A4 plate) were directly used as test specimens, and evaluated using the evaluation apparatus shown in FIG. 7 in the following manner. In FIG. 7, the specimen 5 is made of glass wool 7 inside.
(Thickness of about 30 mm) lined with concrete sound insulation box 6 (height 500 mm, width 400 mm, depth 500)
mm, wall thickness 100 mm, opening 200 × 400 mm) and set the volume of the stereo amplifier 9 to 2
The noise was generated from the speaker 8, and the transmitted sound from the test body 5 was measured by the sound level meter 4. The measured values are represented by all-pass (AP) noise levels in all frequency ranges using the A-characteristic correction values, and are shown in Tables 4 to 11. The noise level when the test piece 5 is not set (when released) is 98
dB.

<Evaluation of Impact Sound Absorbing Performance> In a soundproof material using a support plate, a test body having a support plate on the surface was evaluated for its impact sound absorbing performance in the manner shown in FIG. 8, an iron ball 10 attached to the tip of a string 11 (length 500 mm) is dropped on the surface of a support plate 3 of a suspended test body 5 as shown in FIG. A total of 4 measurements were taken. As in the case of the evaluation of the soundproofing performance, the measured value is represented by an all-pass (AP) noise level in the entire frequency range using the A-characteristic correction value.
11 is shown.

FIG. 9 shows the evaluation results of the soundproof performance and FIG. 10 shows the evaluation results of the impact sound absorption performance of the representative examples and comparative examples.

[0049]

[Table 1]

[0050]

[Table 2]

[0051]

[Table 3]

[0052]

[Table 4]

[0053]

[Table 5]

[0054]

[Table 6]

[0055]

[Table 7]

[0056]

[Table 8]

[0057]

[Table 9]

[0058]

[Table 10]

[0059]

[Table 11]

[0060]

[Table 12]

[0061]

[Table 13]

In Tables 11 to 13, the type of the support plate is as follows.
It is as follows. Plain steel plate: SPCC-SB manufactured by Japan Test Panel Industry
Cold rolled steel plate Stainless steel plate: SUS3 manufactured by Japan Test Panel Industry
04-CP cold-rolled stainless steel sheet Wooden plywood: JAS PO 1-43 manufactured by Masawa Plywood Industry Co., Ltd.
No. 1 Class 1 etc. Normal plywood Aluminum alloy plate: A-110 made by Japan Test Panel Industry
0P Acrylic resin plate: Sumipex E manufactured by Sumitomo Chemical Co., Ltd.

[0063]

According to the soundproofing material of the present invention, one material has sound absorbing properties, sound insulating properties and vibration damping properties, and can be effective in reducing airborne sound and solidborne sound. ,
It is also effective for equipment or buildings to which a large impact is applied. Therefore, comprehensive and excellent soundproofing measures can be effectively implemented for various noises in a wide range of fields, and the space required for the soundproofing measures can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration example of a soundproofing material of the present invention.

FIG. 2 is a diagram showing a configuration example of the soundproofing material of the present invention, which is different from FIG.

FIG. 3 is a diagram showing a configuration example of the soundproofing material of the present invention which is different from FIGS.

FIG. 4 is a diagram showing a configuration example of the soundproofing material of the present invention, which is different from FIGS.

FIG. 5 is a diagram showing a configuration example of the soundproofing material of the present invention which is different from FIGS.

FIG. 6 is a graph showing the damping performance of damping paints A to F prepared in Examples of the present invention.

FIG. 7 is a diagram schematically showing an apparatus for evaluating the soundproofing performance of the soundproofing materials prepared in Examples and Comparative Examples of the present invention.

FIG. 8 is a diagram schematically showing a procedure for evaluating the impact sound absorbing performance of the soundproofing material having a support plate prepared in Examples and Comparative Examples of the present invention.

FIG. 9 is a graph showing the soundproofing performance of the soundproofing materials prepared in Examples and Comparative Examples of the present invention.

FIG. 10 is a graph showing the impact sound absorbing performance of the soundproofing materials prepared in Examples and Comparative Examples of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Porous layer 2 Damping layer 3 Support plate

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI F16F 15/02 F16F 15/02 Q (72) Inventor Masazuna Watanabe 4-20-4-104 Hanaguri, Soka City, Saitama Prefecture (72) Inventor Hiroaki Kaneko 4-19-24-701 Minamishinozakicho, Edogawa-ku, Tokyo

Claims (4)

[Claims] 1. An inorganic filler 5 based on 100 parts by weight of a solid content of an asphalt emulsion or a vehicle comprising an asphalt emulsion and a synthetic resin emulsion.
A soundproofing material comprising a layer obtained by drying a coating composed of 0 to 430 parts by mass and 10 to 100 parts by mass of a synthetic resin powder, and a porous layer. 2. An inorganic filler 5 based on 100 parts by weight of a solid content of an asphalt emulsion or a vehicle comprising an asphalt emulsion and a synthetic resin emulsion.
A soundproofing material comprising: a layer obtained by drying a coating consisting of 0 to 430 parts by mass and 10 to 100 parts by mass of a synthetic resin powder, a porous layer, and a support plate. 3. The porous material according to claim 1, wherein the porous material is made of at least one selected from glass wool, rock wool, and urethane foam.
The described soundproofing material. 4. The soundproofing material according to claim 2, wherein the support plate is at least one selected from a wooden plywood, a normal steel plate, a stainless steel plate, an aluminum alloy plate, and a resin plate.