JP2013028335A - Floor material and interior/exterior material for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin floor material and interior/exterior material for automobile which effectively reduces noise such as life sound, stone splashing sound, engine noise or traveling sound.SOLUTION: A trunk trim 11 includes a sound absorbing fiber material 14 composed of a sound absorbing fiber 15 including organic damping material having dispersed phase consisting of one or two or more kinds of compounds selected among p-(p-toluenesulfonylamid) diphenylamine, 4, 4'-bis(α, α-dimethyl benzyl) diphenylamine, octylated diphenylamine, 2, 2'-methylenebis(4-ethyl-6-tert-butylphenol), 4, 4'-thiobis(3-methyl-6-tert-butylphenol), and N, N'-di-2-naphthyl-p-phenylenediamine in resin matrix phase.

Description

The present invention relates to floor materials and interior materials such as dash insulators of automobiles, ceilings in vehicle interiors, floor insulators, carpets, hood insulators, trunk trims, door trims, peeler trims, or fender liners, rear liners, engine covers, The present invention relates to an automotive interior / exterior material that can be suitably used for an exterior material such as an undercover.
More specifically, the present invention relates to a floor material and an interior / exterior material for automobiles that are thin and that can effectively reduce noise such as indoor living sound, rock jump sound, engine noise, or traveling sound.

  Conventionally, as an automotive interior / exterior material 1 having sound absorbing properties, for example, as shown in the figure, a material in which a sound absorbing material 15 is bonded to a laminated material 4 in which a large specific gravity resin sheet 3 is laminated on a fiber skin material 2 has been proposed. (See Patent Document 1).

  The sound absorbing material 5 includes, for example, recycled fibers obtained by defibrating fiber product scraps such as urethane resin, melamine resin, thermosetting acrylic resin, urea resin, phenol resin, epoxy resin, thermosetting polyester, and the like. Felt bound by curable synthetic resin binder, needle punch laminated felt using synthetic fiber similar to synthetic fiber used for fiber skin material 2, polyethylene fiber, polypropylene fiber, low A sound absorbing fiber body such as felt using a thermoplastic fiber such as a melting point polyester fiber as a binder is employed.

As another sound-absorbing fiber body, a non-woven fabric layer having a surface density of 500 to 4000 g / m ² having glass fibers as constituent fibers and a surface density of 50 to 500 g having polyolefin high-strength fibers of 0.1 to 12 dtex as constituent fibers. Some have a nonwoven fabric layer of / m ² (see, for example, Patent Document 2).

Further, as another sound absorbing fiber body, a non-woven fabric having a basis weight of 10 to 300 g / m ² , an air permeability of 1.5 to 10 cc / cm ² / sec, and an average fineness of constituent fibers of 0.1 to 2 dtex, A structure in which a fiber structure having a density of 0.01 to 0.10 g / cm ³ , a thickness of 5 to 100 mm, and an average fineness of constituent fibers of 0.5 to 10 dtex is laminated (for example, (See Patent Document 3).

  The sound-absorbing fiber bodies described in Patent Documents 1 to 3 are all heat energy using the sound energy as frictional heat by repeatedly colliding with the constituent fibers in the process in which the sound hitting the sound-absorbing fiber body passes through the fiber body. In order to ensure sufficient sound absorption, a certain thickness is required.

However, many of the interior and exterior materials for automobiles are standardized, and there are severe restrictions on the thickness depending on the application and use state, and when applying these sound absorbing fiber bodies to the interior and exterior materials for automobiles, It was necessary to reduce the sound absorbing property to some extent and to clear the thickness limitation.
For this reason, what is thin and sufficient sound-absorbing property was calculated | required for the sound-absorbing fiber body applied to each interior / exterior material for automobiles with severe restrictions on thickness.

  On the other hand, as a flooring material, the thing of patent document 4 is proposed, However, What is still thinner, lightweight, and was excellent in the sound absorption performance is calculated | required.

Japanese Patent Laid-Open No. 9-300514 JP 2001-316916 A JP 2004-145180 A JP 9-317144 A

  The present invention has been made in view of such circumstances, and is a floor made of a sound-absorbing fiber body that is thin and can effectively reduce noises such as living sounds, hopping sounds, engine noise, and running noise. It aims at providing a material and the interior / exterior material for motor vehicles.

  In order to achieve the above object, the invention described in claim 1 is characterized in that P- (p-toluenesulfonylamido) diphenylamine, 4,4′-bis (α, α-dimethylbenzyl) diphenylamine, octyl is contained in the resin matrix phase. Diphenylamine, 2,2′-methylenebis (4-ethyl-6-tert-butylphenol), 4,4′-thiobis (3-methyl-6-tert-butylphenol), and N, N′-di-2-naphthyl A sound-absorbing fiber body comprising a sound-absorbing fiber including an organic damping material having a dispersed phase composed of one or more compounds selected from p-phenylenediamine, or an organic damping material having the dispersed phase A flooring material or an interior / exterior material for automobiles characterized by comprising a sound-absorbing fiber body impregnated or coated with a resin emulsion. The effect was made.

  The invention according to claim 2 is a sound absorbing fiber body including a sound absorbing fiber including an organic damping material having a plurality of different dispersed phases or a plurality of types of sound absorbing fibers including an organic damping material having different dispersed phases, or the A flooring or automobile comprising a sound absorbing fiber body impregnated or coated with a resin emulsion containing an organic damping material having a plurality of different dispersed phases or a plurality of types of resin emulsion containing an organic damping material having a different dispersed phase The interior and exterior materials were used as the gist.

The invention according to claim 3 includes a laminate of the sound absorbing fiber body containing an organic damping material, or a laminate of the sound absorbing fiber body containing an organic damping material and a nonwoven fabric not containing an organic damping material. The gist is a flooring material or an interior / exterior material for automobiles.
In the invention according to claim 4, the resin constituting the resin matrix phase is polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile butadiene styrene copolymer (ABS), It is characterized by comprising one or more selected from acrylonitrile styrene copolymer (AS), polymethyl methacrylate (PMMA), chlorinated polyethylene (CPE), and ethylene vinyl acetate copolymer (EVA). The gist was flooring or interior / exterior materials for automobiles.

  The invention according to claim 5 further includes an inorganic filler composed of one or more kinds selected from mica scale pieces, glass pieces, glass fibers, carbon fibers, calcium carbonate, barite and precipitated barium sulfate. The gist is flooring or interior / exterior material for white motion vehicles.

  The invention according to claim 6 is characterized in that the compound constituting the dispersed phase is contained in an amount of 1 to 200 parts by weight with respect to 100 parts by weight of the resin constituting the resin matrix phase. The gist of the interior and exterior materials.

The gist of the invention described in claim 7 is a flooring material or an interior / exterior material for automobiles, in which the sound absorbing fiber is contained in the sound absorbing fiber body at a rate of 10 to 1200 g / m ² .

The gist of the invention described in claim 8 is a flooring material or an interior / exterior material for automobiles, wherein a resin containing an organic damping material is contained in the sound absorbing fiber body at a rate of 10 to 600 g / m ^2. It was.

  The invention according to claim 8 is selected from a dash insulator of an automobile, a ceiling in a vehicle interior, a floor insulator, a carpet, a hood insulator, a trunk trim, a door trim, a peeler trim, a fender liner, a rear liner, an engine cover, and an under cover. The gist is an automotive interior / exterior material that is applied to at least one of the above.

In the flooring or automotive interior / exterior material of the present invention, p- (p-toluenesulfonylamido) diphenylamine, 4,4′-bis (α, α-dimethylbenzyl) diphenylamine, octyl is contained in the resin matrix phase. Diphenylamine, 2,2′-methylenebis (4-ethyl-6-tert-butylphenol), 4,4′-thiobis (3-methyl-6-tert-butylphenol), and N, N′-di-2-naphthyl A sound-absorbing fiber body comprising a sound-absorbing fiber including an organic damping material having a dispersed phase composed of one or more compounds selected from p-phenylenediamine, or an organic damping material having the dispersed phase Since it consists of a sound absorbing fiber body impregnated or coated with a resin emulsion, in the process that the sound hitting the sound absorbing fiber body passes through the fiber body By repeating the collision with the synthetic fiber, the energy is converted into heat energy as frictional heat, so that the attenuation is achieved, and the compound constituting the dispersed phase in the resin matrix phase of the organic damping material is shifted in phase, By repeating the rotation, the sound energy is converted into heat energy and the energy is attenuated, so that the sound absorption is thinner and more excellent.
For this reason, it can also be applied to interior and exterior materials for automobiles that have severe thickness restrictions, and noise such as living sounds, hopping sounds, engine noise, or traveling noise can be effectively reduced.

The perspective view which shows the example which applied the interior / exterior material for motor vehicles which actualized this invention to the trunk trim. The principal part expanded sectional view cut | disconnected by the AA line of FIG. It is a schematic diagram which shows the dispersed phase of this compound formed in the matrix phase of a sound absorption fiber. The perspective view which shows the example which applied the interior / exterior material for motor vehicles which actualized this invention to the fender liner. The principal part expanded sectional view cut | disconnected by the BB line of FIG. The figure which shows the flooring which materialized this invention, and its sound absorption characteristic. The figure which shows the test apparatus which performed the performance test of the flooring which materialized this invention. Sectional drawing which shows the other example of the flooring which actualized this invention.

Hereinafter, the interior / exterior materials for automobiles embodying the present invention will be described in more detail.
The interior and exterior materials for automobiles embodying the present invention are, for example, as skin materials and base materials for interior materials such as automobile dash insulators, vehicle interior ceilings, floor insulators, carpets, hood insulators, trunk trims, door trims, and peeler trims. Alternatively, it can be suitably used as a skin material or base material for exterior materials such as fender liners, rear liners, engine covers, and under covers.

  1 and 2 show an example in which an interior / exterior material for an automobile embodying the present invention is used as a base material for a trunk trim of an automobile, and FIGS. 4 and 5 embody the present invention. The example which used the interior / exterior material for motor vehicles as the base material of a fender liner is shown.

  First, the example shown in FIGS. 1 and 2 will be described. A trunk trim 11 shown in FIGS. 1 and 2 is formed by stacking a sound-absorbing fiber body 14 on one side of a resin sheet 13 formed in the shape of a trunk trim, and the other side of the resin sheet 13 of this base material. The fiber skin material 12 is laminated.

  Examples of the fiber skin material 12 include polyester fibers, polyethylene fibers, polypropylene fibers, polyamide fibers, acrylic fibers, urethane fibers, polyvinyl chloride fibers, polyvinylidene chloride fibers, and synthetic fibers such as acetate fibers, or pulp fibers, wool fibers, Natural fibers such as cotton fibers can be used, and a fibrous body composed of a nonwoven fabric, a woven fabric, a knitted fabric, or a composite obtained by combining these fibers, one or more selected from these fibers. It is constituted by. In the illustrated example, a needle punched nonwoven fabric of polyester fiber is employed.

The basis weight of the fiber skin material 12 is not particularly limited, but is preferably in the range of 100 to 600 g / m ² in consideration of sound absorption, weight, and cost.

  As the resin sheet 13, for example, an inorganic filler such as calcium carbonate, mica, barium sulfate, glass fiber, carbon black, carbon fiber, and hollow silica is blended with a thermoplastic resin such as polyethylene, polypropylene, and ethylene-vinyl acetate copolymer. Examples include a composite material that is extruded into a sheet shape, press-molded into a required shape after heat softening treatment.

In the illustrated example, the specific gravity of the resin sheet 13 is in the range of 0.03 to 1.6 g / cm ³ by blending the inorganic filler in a ratio of 1 to 100 parts by weight with respect to 100 parts by weight of the composite material. did. The resin sheet can be molded by injection molding with a molding die provided in the shape of the trunk trim.

  The sound-absorbing fiber body 14 is similar to the fiber skin material 12, for example, polyester fibers, polyethylene fibers, polypropylene fibers, polyamide fibers, acrylic fibers, urethane fibers, polyvinyl chloride fibers, polyvinylidene chloride fibers, acetate fibers, and other synthetic fibers, Alternatively, natural fibers such as pulp fibers, wool fibers, and cotton fibers can be used. Nonwoven fabrics, woven fabrics, knitted fabrics, or composites composed of one or more selected from these fibers. It is comprised by the fiber body which consists of a composite.

  The sound-absorbing fiber body 14 shown in FIGS. 1 and 2 includes a sound-absorbing fiber 15 containing an organic damping material as a constituent fiber, and collides with the constituent fiber in the process in which the sound hitting the fiber body passes through the fiber body. By repeating the above, sound energy is converted into heat energy as frictional heat to attenuate the compound, and the compound constituting the dispersed phase in the resin matrix phase constituting the organic damping material causes phase shift and rotation. By repeating, sound energy is converted into heat energy and energy is attenuated. The sound-absorbing fiber containing the organic damping material includes a form in which a coating layer containing the organic damping material is formed on the fiber surface, a form in which the organic damping material is kneaded on the fiber surface or inside, and an organic damping material attached to the fiber surface. The form etc. can be mentioned.

There is no particular limitation on the type of sound absorbing fiber containing the organic damping material. As the resin constituting the matrix phase of the organic damping material, all thermoplastic resins can be used, but the above-described sound absorbing fiber form, that is, a form in which a coating layer containing the organic damping material is formed on the fiber surface, the fiber surface or It is desirable that the organic damping material is kneaded into the inside or the organic damping material is attached to the fiber surface, and the like is appropriately selected according to the shape. For example, when a coating layer containing an organic damping material is formed on the fiber surface, it is desirable that the resin constituting the matrix phase is excellent in film-forming properties, and the organic damping material is attached to the fiber surface. In this case, the resin constituting the matrix phase preferably has adhesiveness.
Specifically, polyolefins such as polyethylene (PE) and polypropylene (PP), copolymers thereof, preferably polyolefins grafted or copolymerized with polar groups such as carboxylic acid and epoxy, polyvinyl chloride (PVC), From polystyrene (PS), acrylonitrile butadiene styrene copolymer (ABS), acrylonitrile styrene copolymer (AS), polymethyl methacrylate (PMMA), chlorinated polyethylene (CPE), and ethylene vinyl acetate copolymer (EVA) One type or two or more types may be mentioned.

  In selecting the resin constituting the matrix phase, in addition to the compatibility with the components constituting the dispersed phase such as p- (p-toluenesulfonylamido) diphenylamine described later, handleability, moldability, and availability It is desirable to consider temperature performance (heat resistance and cold resistance), weather resistance, price, etc.

  Examples of the organic damping material include p- (p-toluenesulfonylamide) diphenylamine, 4,4′-bis (α, α-dimethylbenzyl) diphenylamine, octylated diphenylamine, and 2,2′-methylenebis in the resin matrix phase. (4-ethyl-6-tert-butylphenol), 4,4′-thiobis (3-methyl-6-tert-butylphenol), and N, N′-di-2-naphthyl-p-phenylenediamine 1 type or 2 or more types of compounds (henceforth this compound) can be mentioned.

  The present compound is mixed in the resin constituting the matrix phase to form a dispersed phase in the matrix phase, and has a function of effectively attenuating energy such as vibration and sound applied to the organic damping material. More specifically, the present compound constituting the dispersed phase has a different energy attenuation effect for each present compound.

  This dispersed phase exists in the matrix as a dispersed phase in which the present compound is microphase-separated or as a completely compatible dispersed phase. Further, it is desirable that this dispersed phase is present in the matrix phase in an average size of 1 micron or less, more preferably an average size of 0.1 micron or less, in order to more effectively exhibit the energy attenuation effect. .

  The present compound constituting the dispersed phase is desirably contained in an amount of 1 to 200 parts by weight with respect to 100 parts by weight of the resin constituting the matrix phase. When the content of the present compound is less than 1 part by weight, sufficient energy attenuation cannot be obtained, and when it exceeds 200 parts by weight, attenuation exceeding the range cannot be obtained, which is uneconomical. Because it becomes.

  In addition, there are various types of vibration and sound energy, from low frequency to high frequency, and the types of vibration and sound required vary depending on the application and usage conditions. By selecting one or more of the present compounds constituting the matrix phase and the dispersed phase, and mixing the present compound in the resin constituting the selected matrix phase, the required vibration or An organic damping material having a more effective energy damping effect according to the type of sound can be obtained.

  For example, FIG. 2 shows that the resin constituting the matrix phase and the present compound constituting the dispersed phase are selected one by one, and the same one selected present compound is mixed in the resin constituting the selected matrix phase. Then, a sound absorbing fiber 15 having a coating layer formed by coating this on the fiber surface is produced, and a sound absorbing fiber body 14 in the form of a nonwoven fabric including the sound absorbing fiber 15 as a constituent fiber is shown. One kind of dispersed phase 17 of the present compound is formed in the matrix phase 16 of the sound absorbing fiber 15 constituting the sound absorbing fiber body 14 (see FIG. 3).

  For the sound absorbing fiber body 14, for example, a plurality of combinations of the compound constituting the matrix phase and the resin constituting the matrix phase having the energy attenuation effect in different frequency regions depending on the type of vibration or sound required are selected. A form containing a plurality of types of sound absorbing fibers in which a plurality of types of organic damping materials obtained by mixing a single selected compound of the present invention in the resin constituting the selected matrix phase are attached to the fiber surface via a binder. It can also be taken.

  The sound absorbing fiber body 14 is composed of a resin constituting one kind of matrix phase according to the type of vibration and sound required, and a plurality of present compounds constituting a plurality of kinds of dispersed phases having an energy attenuation effect in different frequency regions. And a single organic damping material having an energy damping effect in different frequency regions obtained by mixing a plurality of the same selected compounds in the resin constituting the selected matrix phase on the fiber surface. The form containing the coated sound-absorbing fiber can also be taken.

The sound absorbing fiber 15 in the sound absorbing fiber body 14 is desirably contained at a basis weight of 10 to 1200 g / m ² . When the basis weight of the sound absorbing fiber 15 is less than 10 g / m ² , sufficient energy attenuation cannot be obtained, and when the basis weight of the sound absorbing fiber 15 exceeds 1200 g / m ² , the energy attenuation can be improved. On the other hand, since the weight and cost increase, the weight per unit area of the sound absorbing fiber 15 is preferably in the range of 10 to 1200 g / m ² considering the balance of energy attenuation, weight and cost.

  In addition to the above-mentioned components, the organic damping material includes, for example, my strength scales, glass pieces, glass fibers, carbon fibers, calcium carbonate, barite, precipitated barium sulfate, corrosion inhibitors, dyes, oxidation An inhibitor, an antistatic agent, a stabilizer, a wetting agent, and the like can be appropriately added as necessary.

  Next, an example in which the automotive interior / exterior material embodying the present invention shown in FIGS. 4 and 5 is used as a base material for a fender liner will be described. The illustrated fender liner 21 includes a liner main body 22 formed corresponding to the shape of an automobile fender arch, and a backing material 23 (sound absorbing fiber body) that reinforces the liner main body 22.

  The liner body 22 is based on a thermoplastic resin such as high-density polyethylene resin, ABS resin, or elastomer, for example, and an inorganic filler such as mica, talc, or glass fiber is mixed therein, and the mixture is extruded into a sheet shape. It can be obtained by molding into the shape of a fender arch while still in a plastic state.

  Lamination integration of the backing material 23 (base material) to the liner body 22 may be performed using an adhesive, but if the backing of the reinforcing material is performed at the same time as forming the shape of the fender arch, the adhesive is This eliminates the need for more efficient manufacturing.

  The backing material 23 (base material) is, for example, a synthetic fiber such as polyester fiber, polyethylene fiber, polypropylene fiber, polyamide fiber, acrylic fiber, urethane fiber, polyvinyl chloride fiber, polyvinylidene chloride fiber, acetate fiber, pulp fiber, wool Natural fibers such as fibers and cotton fibers can be used, and they are composed of one kind selected from these fibers, or a nonwoven fabric, woven fabric, knitted fabric, or a composite obtained by combining these. It is comprised by the fiber body. In the illustrated example, a needle punched nonwoven fabric of polyester fiber is employed.

The basis weight of the backing material 23 (sound absorbing fiber body) is not particularly limited, but is preferably in the range of 100 to 1100 g / m ² in consideration of sound absorbing property, weight, and cost.

  The backing material 23 (sound-absorbing fiber body) is impregnated or coated with a resin emulsion containing an organic damping material, and is configured in the process in which the sound hitting the backing material 23 (sound-absorbing fiber body) passes through the fiber body. By repeating the collision with the fiber, the sound energy is converted into heat energy as frictional heat, so that the attenuation is achieved and the backing material 23 (sound absorbing fiber body) is impregnated as shown in FIGS. Alternatively, the compound constituting the dispersed phase 17 in the resin matrix phase 16 of the organic damping material contained in the resin 24 to be applied repeats phase shift and rotation, so that sound energy is converted into thermal energy to attenuate the energy. Has been made. The organic damping material contained in the resin impregnated or applied to the backing material 23 (sound-absorbing fiber body) is the same as that shown in FIGS. 1 to 3 and will not be described here.

  Examples of the resin emulsion impregnated or applied to the backing material 23 (sound-absorbing fiber body) include acrylic emulsion, styrene-butadiene emulsion, urethane resin emulsion, phenol resin emulsion, and the like, and constitutes this resin emulsion. The resin may be a resin constituting the resin matrix phase of the organic damping material, or the organic damping material may be included in the resin emulsion. In addition, as a form of the resin emulsion impregnated or applied to the backing material (sound absorbing fiber body), a form of a resin emulsion including an organic damping material having a plurality of different dispersed phases or a plurality of organic damping materials having different dispersed phases is used. Mention may be made of the form of a seed resin emulsion.

Examples of the method for applying or impregnating the resin emulsion containing the organic damping material to the backing material 23 (sound absorbing fiber body) include a roll coater method, a reverse roll coater method, a gravure roll coater method, a direct roll coater method, a squeeze roll method, A spray gun method, a dip roll method, a foam spray method, and a dipping method can be used. In this case, it is desirable that the resin containing the organic damping material is contained at a rate of 10 to 600 g / m ² . When the resin content (adhesion amount) is less than 10 g / m ² , sufficient energy attenuation cannot be obtained, and when the resin content (adhesion amount) exceeds 600 g / m ² , energy attenuation is achieved. Although the improvement of the property can be expected, since the weight and the cost are increased, the resin including the organic attenuation material is included in the range of 10 to 600 g / m ² in consideration of the balance between the energy attenuation property, the weight and the cost. It is preferable.

  In addition, this invention is not limited to the above-mentioned example shown in drawing, For example, all members of the fiber skin material 12, the resin sheet 13, and the sound absorption fiber body 14 which comprise the trunk trim shown in FIG.1 and FIG.2 are organic. It is assumed that a sound absorbing fiber containing a damping material is included, a resin emulsion containing an organic damping material is impregnated or applied, and a sound absorbing fiber body made of the same or different sound absorbing fibers is laminated. The embodiment can be freely changed within the range described in the range.

Next, the example which actualized this invention to the flooring 30 is demonstrated according to FIG.6 and FIG.7.
First, similarly to the example of the backing material (sound absorbing fiber body) 23, a sound absorbing fiber body 23 was produced by impregnating a resin nonwoven fabric with a resin emulsion containing the organic damping material.
The basis weight of the nonwoven fabric used when producing the sound absorbing fiber body 23 is 100 g / m ² , and the basis weight of the impregnated resin 24 is 500 g / m ² .
And the sound-absorbing fiber body 23 was smoothed by pressing at 140 degrees Celsius for 2 minutes.

  As shown in FIG. 6 (A), the floor material 30 has a configuration in which the sound absorbing fiber body 23 of the present invention is attached to the back surface of a floor material body 31 made of wood, plywood or the like.

In order to easily test light impact sound for the flooring 30 configured as described above, a 300 × 300 mm soundproofing material and plywood flooring are placed on a concrete block, and a golf ball having a weight of 45.6 g is dropped freely from a height of 440 mm. The magnitude of the impact sound transmitted to the iron plate frame when it collided with the plywood flooring was measured with a sound level meter. The measurement results shown in the graph of FIG. 6B employ an average of n = 3. Note that “t” in FIG. 7 indicates thickness (unit: mm).
The plywood flooring used for this test (CLICK FLOOR: registered trademark made by Kimura Co., Ltd.) has a structure with a surface decoration layer made of melamine resin, a high-density fiberboard (1200 kg / m ³ ), and a waterproof back surface layer. It has become.

In this test, the test piece used as a comparative example is a rubber sheet that is often used as a soundproofing material and has the same walking feeling. As a result, it was confirmed that the sound-absorbing fiber body (damping felt) of the present invention was superior to the rubber sheet in the following points.
・ At 250 Hz or less, lower weight than rubber sheet (5100 g / m ² ) and equivalent sound absorption performance.
・ At 500Hz or higher, there is better sound absorption performance than rubber sheets.

The present invention is not limited to the above-described example shown in the drawings, and a flooring is formed using a sound absorbing body made of a sound absorbing fiber impregnated or coated with a resin emulsion containing an organic damping material, or the same or different sound absorbing fibers. For example, a flooring material may be configured by laminating sound absorbing fiber bodies made of the above materials, and the present invention can be carried out by freely changing within the scope described in the claims.
For example, like the flooring 30 shown in FIG. 8, the back surface of the flooring main body 31 made of wood, plywood or the like is similar to the sound absorbing fiber body 14 of the example shown in FIG. 2, but the present invention is embodied. The sound absorbing fiber bodies 14a and 14b having different dispersed phases may be laminated and bonded together.
In this case, the basis weights of the sound absorbing fiber bodies 14a and 14b may be the same or different.

Including the sound-absorbing fiber body shown in the example described above, the structure of the sound-absorbing fiber body used for the flooring or the automobile interior / exterior material of the present invention includes the following (a) to (e) There are examples, and these are all included in the scope of the present invention.
(A) A vibration-damping nonwoven fabric (sound-absorbing fiber body) consisting of a single body.
(B) A laminate of damping nonwoven fabric and general nonwoven fabric.
(C) Consists of a plurality of non-woven fabric layers and a polymer layer, a semi-gelled polymer material is placed between the non-woven fabric layers, and these are pressed with a roll from the thickness direction, and a part of the polymer material 3 layers or more are laminated by infiltrating the inside of the non-woven fabric layer and solidified in that state, and the organic damping material of the present invention is used in one layer or two or more layers thereof (intermediate composed of solidified polymer) Organic damping material may be used for the layer).
(D) A nonwoven fabric impregnated only with the upper or lower surface of a nonwoven fabric (a vibration-damping layer and a layer that is not so are not separated at the center, but become a gradient material).
(E) A combination of (i) to (c) above.

  The present invention relates to floor materials and automobiles such as automobile dash insulators, vehicle interior ceilings, floor insulators, carpets, hood insulators, trunk trims, door trims, peeler trims, fender liners, rear liners, engine covers and under covers. It can be used industrially as an interior / exterior material.

DESCRIPTION OF SYMBOLS 11 ... Trunk trim 12 ... Skin material 13 ... Resin sheet 14 ... Sound absorption fiber body 15 ... Sound absorption fiber 16 ... Resin matrix 17 ... Dispersion phase 21 ... Fender liner 22 ... Liner body 23 ... Backing material (sound absorbing fiber)
30 ... Floor material 31 ... Floor material body 14a ... Sound absorbing fiber body 14b ... Sound absorbing fiber body

Claims (9)

  In the resin matrix phase, p- (p-toluenesulfonylamido) diphenylamine, 4,4′-bis (α, α-dimethylbenzyl) diphenylamine, octylated diphenylamine, 2,2′-methylenebis (4-ethyl-6- tert-butylphenol), 4,4′-thiobis (3-methyl-6-tert-butylphenol), and N, N′-di-2-naphthyl-p-phenylenediamine A sound-absorbing fiber body comprising a sound-absorbing fiber containing an organic damping material having a dispersed phase composed of a compound, or a sound-absorbing fiber body impregnated or coated with a resin emulsion containing an organic damping material having the dispersed phase. Floor materials or interior and exterior materials for white motion vehicles.   Sound-absorbing fiber including organic damping material having a plurality of different dispersed phases, sound-absorbing fiber body comprising a plurality of types of sound-absorbing fibers including organic damping material having different dispersed phases, or organic damping having the plurality of different dispersed phases The flooring or the interior / exterior for automobiles according to claim 1, comprising a sound absorbing fiber body impregnated or coated with a resin emulsion containing a material or a plurality of resin emulsions containing an organic damping material having different dispersed phases. Wood.   The laminated structure of the sound absorbing fiber body containing an organic damping material, or the laminated structure of the sound absorbing fiber body containing an organic damping material and a non-woven fabric not containing an organic damping material. 2. A flooring material or an interior / exterior material for automobiles according to 2.   The resin constituting the resin matrix phase is polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile butadiene styrene copolymer (ABS), acrylonitrile styrene copolymer (AS), It consists of 1 type, or 2 or more types chosen from polymethyl methacrylate (PMMA), chlorinated polyethylene (CPE), and an ethylene vinyl acetate copolymer (EVA), In any one of Claims 1-3 characterized by the above-mentioned. The flooring or interior / exterior material for automobiles described.   Any one of 1 or 2 types of inorganic fillers chosen from my power scale pieces, glass pieces, glass fibers, carbon fibers, calcium carbonate, barite, and precipitated barium sulfate are further included. Or flooring materials for automobiles.   The flooring material according to any one of claims 1 to 5, wherein the compound constituting the dispersed phase is contained in an amount of 1 to 200 parts by weight with respect to 100 parts by weight of the resin constituting the resin matrix phase. Automotive interior and exterior materials. Flooring or in automotive exterior material according to claim 1, sound absorbing fibers, characterized in that contained in the sound absorbing fibrous body at a rate of 10~1200g / m ^2. Resin containing an organic damping material is contained in the sound-absorbing fiber body at a rate of 10 to 600 g / m ² .   Applicable to at least one selected from automobile dash insulator, car interior ceiling, floor insulator, carpet, hood insulator, trunk trim, door trim, peeler trim, fender liner, rear liner, engine cover, under cover The interior / exterior material for automobiles according to any one of claims 1 to 8.

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