WO2001071707A1 - Film d'isolation phonique - Google Patents

Film d'isolation phonique Download PDF

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Publication number
WO2001071707A1
WO2001071707A1 PCT/JP2000/001720 JP0001720W WO0171707A1 WO 2001071707 A1 WO2001071707 A1 WO 2001071707A1 JP 0001720 W JP0001720 W JP 0001720W WO 0171707 A1 WO0171707 A1 WO 0171707A1
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WO
WIPO (PCT)
Prior art keywords
sound
film
sound absorbing
amount
absorbing film
Prior art date
Application number
PCT/JP2000/001720
Other languages
English (en)
Japanese (ja)
Inventor
Mitsuo Hori
Kazuhiro Yoshikawa
Original Assignee
Shishiai-Kabushikigaisha
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 Shishiai-Kabushikigaisha filed Critical Shishiai-Kabushikigaisha
Priority to PCT/JP2000/001720 priority Critical patent/WO2001071707A1/fr
Publication of WO2001071707A1 publication Critical patent/WO2001071707A1/fr

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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

Definitions

  • the present invention is applicable to precision equipment such as a recording / reproducing apparatus using a magnetic medium such as a tape recorder, an MD recorder, and a digital audio tape recorder (DAT recorder), and a video recording / reproducing apparatus such as a video recorder and a video camera.
  • the present invention relates to a sound-absorbing film that can be applied to a wide range of applications, such as soundproof covers applied to automobiles, other linings for home appliances and vehicles, and interior materials for homes. Background art
  • This sound-absorbing film has a sound-absorbing mechanism that vibrates in response to the transmitted sound and consumes the energy of the sound as internal frictional resistance, and can be applied to the precision equipment and soundproof cover described above. It is a compact one. However, this sound-absorbing film had low sound-absorbing properties, and did not solve the problem sufficiently.
  • this sound absorbing film for example, in the case of a film made of a polyolefin such as polyethylene or polypropylene, has a high adhesiveness, as is well known, causing blocking. This not only impaired the workability in the production of the film and its high-order processing, but also caused various troubles such as sticking of the stacked films to each other during use.
  • An object of the present invention is to propose a sound-absorbing film that is compact, has sufficient sound absorbing properties, hardly causes blocking, has good workability during manufacturing and processing, and has extremely good handleability during use. Things. Disclosure of the invention
  • the sound-absorbing film of the present invention can be used as a recording / reproducing apparatus using a magnetic medium such as a tape recorder, an MD recorder, or a digital audio tape recorder (DAT recorder), or a video recording / reproducing apparatus such as a video recorder or a video camera. It can be applied to a wide range of applications, such as precision equipment, soundproofing pars applied to piping in buildings, linings of home appliances and vehicles, and interior materials of houses.
  • a magnetic medium such as a tape recorder, an MD recorder, or a digital audio tape recorder (DAT recorder)
  • DAT recorder digital audio tape recorder
  • video recording / reproducing apparatus such as a video recorder or a video camera. It can be applied to a wide range of applications, such as precision equipment, soundproofing pars applied to piping in buildings, linings of home appliances and vehicles, and interior materials of houses.
  • This sound-absorbing film is a film in which an active ingredient that increases the amount of dipole moment is blended with a polymer material, and contains an antiblocking agent composed of calcium carbonate at a ratio of 1 to 20% by weight. It is characterized by the following.
  • the polymer material constituting the sound absorbing film include polyvinyl chloride, polyethylene, chlorinated polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polymethyl methacrylate, polyvinylidene fluoride, polyisoprene, polystyrene, and styrene. 1-butadiene-acrylonitrile copolymer, styrene-acrylonitrile
  • Ryl copolymer acrylonitrile-butadiene rubber (NBR), styrene butadiene rubber (SBR), butadiene rubber (BR), natural rubber (NR), isoprene rubber (IR), and other polymer materials, blends of these, etc. Can be mentioned.
  • NBR acrylonitrile-butadiene rubber
  • SBR styrene butadiene rubber
  • BR butadiene rubber
  • NR natural rubber
  • IR isoprene rubber
  • the amount of the dipole moment inside the film composed of the above-mentioned polymer material varies depending on the type of the polymer material.
  • the same polymer material for the film Even if is used, the amount of dipole moment generated inside the film changes depending on the temperature when the sound is applied and the frequency of the sound.
  • the amount of dipole moment also changes depending on the magnitude of the sound energy applied to the film. For this reason, it is desirable to select and use a polymer material that has the largest amount of dipole moment in consideration of the temperature, frequency, energy level, etc. when applied as a sound absorbing material for a certain application. No.
  • the polymer material that constitutes the film not only the amount of dipole moment inside the film, but also the handling properties, moldability, availability, etc., according to the application and use form of the sound absorbing material. It is desirable to consider ease, temperature performance (heat resistance and cold resistance), weather resistance, and price.
  • an active ingredient capable of dramatically increasing the amount of dipole moment in the film is incorporated in the polymer material constituting the film.
  • the active component is a component that dramatically increases the amount of dipole moment inside the film.
  • the active component itself has a large dipole moment, or the active component itself has a small dipole moment. It means a component that can dramatically increase the amount of dipole moment inside the film by blending the active component.
  • the amount of dipole moment generated inside film 11 under the given temperature conditions, sound frequency, and energy level is the same as shown in Fig. 3 by adding the active ingredient to this. Under these conditions, the amount will increase by a factor of three or ten. Along with this, the energy consumption due to the dipole restoring action when the above-mentioned energy is added will also increase dramatically, and the sound absorption effect due to the friction of the material surface will be added, and the prediction will be much farther. It is considered that a sound absorption effect exceeding this will occur.
  • active ingredients that induce such effects include N, N-dicyclohexylbenzothiazyl-2-sulfenamide (DCHBSA), 21-mercaptobenzothiazole (MBT), dibenzothiazyl sulfide (MBTS), and the like.
  • DCHBSA N-dicyclohexylbenzothiazyl-2-sulfenamide
  • MTT 21-mercaptobenzothiazole
  • MBTS dibenzothiazyl sulfide
  • CBS N-cyclohexinolevenzothiazirulu 2-sulfenamide
  • CBS N-tert
  • BVS ' ⁇ 2-sulfenamide
  • DPBS N-diisopropylbenzothiazyl-2-sulfenamide
  • One or more compounds selected from compounds having a benzotriazole group such as benzotriazole (2-HDBPCB)
  • One or more compounds selected from compounds having a diphenyl acrylate group such as ethyl 2-cyano 3, 3-diphenyl acrylate;
  • HMBP 2-hydroxy-1-methoxybenzophenone
  • HMBPS 2-hydroxy-4-methoxybenzophenone-5-snorrephonic acid
  • the amount of the active ingredient is preferably 10 to 300 parts by weight based on 100 parts by weight of the polymer material. For example, if the amount of the active ingredient is less than 10 parts by weight, the effect of adding the active ingredient to increase the amount of the dipole moment cannot be obtained, and the amount of the active ingredient is 300 parts by weight. If the ratio exceeds, it may not be fully compatible.
  • the active ingredient contained in the polymer material it is preferable to take into consideration the easiness of the compatibility between the active ingredient and the polymer material, that is, the SP value, and to select one having a similar value.
  • the amount of the dipole moment in the active ingredient varies depending on the type of the active ingredient, similarly to the amount of the dipole moment inside the film. Also, even if the same active ingredient is used, the temperature at the time when sound energy is applied causes the film to be generated inside the film. The amount of the dipole moment changes. Also, the amount of dipole moment changes depending on the magnitude of the sound energy applied to the film. For this reason, it is desirable to select and use the active component having the largest amount of dipole moment in consideration of the magnitude of temperature and energy when applied as a sound absorbing material for a certain application.
  • the sound absorbing film also has an anti-blocking agent made of calcium carbonate.
  • the calcium carbonate used as the anti-blocking agent may be either heavy calcium carbonate or light calcium carbonate.
  • the shape of the calcium carbonate is arbitrary, such as spherical, cubic, spindle-shaped, and elliptical, and may be appropriately determined according to the type and use of the above-described polymer material.
  • the fineness of the carbonated calcium is also arbitrary, and may be appropriately determined according to the type and use of the above-mentioned polymer material, but is preferably in the range of 0.01 to 10 / im. Desirably.
  • This calcium carbonate is contained in a proportion of 1 to 20% by weight.
  • the content of calcium carbonate is less than 1% by weight, it is not possible to sufficiently prevent the booking, and when the content is more than 20% by weight, the transparency of the film is impaired or white powder is generated. Troubles such as failures to occur.
  • the sound-absorbing film of the present invention is obtained by mixing the above-mentioned polymer material with the above-mentioned anti-blocking agent comprising the above-mentioned active ingredient and calcium carbonate, and further adding a corrosion inhibitor or a dye as necessary.
  • the polymer material and the active ingredient are blended, and the blend is formed into a film by a conventionally known molding method.
  • the sound absorbing film thus obtained has excellent sound absorbing properties that cannot be predicted from the sound absorbing properties of conventional sound absorbing films, but the thinner the performance, the more sensitive it is to sound. Vibrates in response to excellent sound absorption.
  • this sound absorbing film contains an anti-blocking agent made of carbonic acid lucium, the workability in the production and higher-order processing of the film is good. Various troubles such as sticking of the films that have been set are unlikely to occur.
  • FIG. 1 is a schematic diagram showing dipoles inside a film.
  • Figure 2 is a schematic diagram showing the state of the dipole inside the film when vibration energy is applied.
  • FIG. 3 is a schematic diagram showing a dipole state inside a film when an active ingredient is blended.
  • FIG. 4 is a graph showing the normal incidence sound absorption coefficient of each film of Examples 1 and 2 and Comparative Examples 1 to 3.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un film d'isolation phonique qui comprend un matériau polymère et, intégré à ce dernier, un agent actif augmentant le moment dipolaire, se caractérisant en ce qu'il comprend un agent anti-bloquant contenant 1 à 20 % en poids de carbonate de calcium. Ledit film d'isolation phonique est extrêmement facile à manipuler et peut être utilisé dans une grand variété d'applications comme par exemple, dans un dispositif de précision, du type système d'enregistrement/lecture sonore dans lequel un support magnétique est utilisé, notamment un enregistreur magnétique, dans un enregistreur de minidisque ou dans un enregistreur magnétique audio numérique (DAT) et dans un système d'enregistrement/lecture d'images, tel qu'un magnétoscope ou une caméra vidéo. Il peut également être utilisé en tant que revêtement d'isolation phonique appliqué sur un tuyau dans un bâtiment, en tant que revêtement pour appareil électrique ménager ou pour véhicule et en tant que matériau d'intérieur.
PCT/JP2000/001720 2000-03-21 2000-03-21 Film d'isolation phonique WO2001071707A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/001720 WO2001071707A1 (fr) 2000-03-21 2000-03-21 Film d'isolation phonique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/001720 WO2001071707A1 (fr) 2000-03-21 2000-03-21 Film d'isolation phonique

Publications (1)

Publication Number Publication Date
WO2001071707A1 true WO2001071707A1 (fr) 2001-09-27

Family

ID=11735817

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/001720 WO2001071707A1 (fr) 2000-03-21 2000-03-21 Film d'isolation phonique

Country Status (1)

Country Link
WO (1) WO2001071707A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019009880A1 (fr) * 2017-07-03 2019-01-10 Hewlett-Packard Development Company, L.P. Obturateur à commande électronique pour sécuriser un dispositif d'entrée

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10268870A (ja) * 1997-03-26 1998-10-09 Cci Corp 建築用板材
EP0897675A1 (fr) * 1996-05-10 1999-02-24 Shishiai-Kabushikigaisha Composition de conversion d'energie

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0897675A1 (fr) * 1996-05-10 1999-02-24 Shishiai-Kabushikigaisha Composition de conversion d'energie
JPH10268870A (ja) * 1997-03-26 1998-10-09 Cci Corp 建築用板材

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019009880A1 (fr) * 2017-07-03 2019-01-10 Hewlett-Packard Development Company, L.P. Obturateur à commande électronique pour sécuriser un dispositif d'entrée

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