EP0820623B1 - Element d'amortissement plat magnetisable - Google Patents

Element d'amortissement plat magnetisable Download PDF

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Publication number
EP0820623B1
EP0820623B1 EP96910931A EP96910931A EP0820623B1 EP 0820623 B1 EP0820623 B1 EP 0820623B1 EP 96910931 A EP96910931 A EP 96910931A EP 96910931 A EP96910931 A EP 96910931A EP 0820623 B1 EP0820623 B1 EP 0820623B1
Authority
EP
European Patent Office
Prior art keywords
component according
damping component
adhesive
damping
dispersion agent
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP96910931A
Other languages
German (de)
English (en)
Other versions
EP0820623A1 (fr
Inventor
Thomas Ruhe
Max Wagner
Stefan Lahner
Manfred Roller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faist Automotive GmbH and Co KG
Original Assignee
Faist Automotive GmbH and Co KG
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 Faist Automotive GmbH and Co KG filed Critical Faist Automotive GmbH and Co KG
Publication of EP0820623A1 publication Critical patent/EP0820623A1/fr
Application granted granted Critical
Publication of EP0820623B1 publication Critical patent/EP0820623B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 invention relates to a magnetizable flat Damping element mentioned in the preamble of claim 1 Genus as well as an adhesive agent.
  • Such a damping element is already known (US-A 5 300 355).
  • the known element consists of a laminate of three individual layers. It must be ensured that the Elasticity modules of the three layers, namely a glass fiber reinforced one Plastic layer, one with magnetizable Particles of at least 50% by weight filled rubber layer and an adhesion - improving intermediate layer, the swinging of the Allow laminate.
  • magnetizable damping elements are also known (DE-37 11 810 A1, DE-AS 12 09 319, US-PS 4 010 818), in particular as so-called "anti-drumming foils" in automotive engineering to deaden the sheet metal covered with it, in particular body sheet metal, and also for structure-borne noise reduction will use.
  • Barium ferrites are used as magnetizable particles together with bitumen in the damping or insulating Insulation layer arranged, which to fulfill the "deadening task" Has. So that such anti-drumming foils are light and as possible can be permanently attached to the body parts the underside of those having the magnetizable particles Provide dam layer with an adhesive layer, which one Hot melt, i.e.
  • the invention has for its object a magnetizable flat damping element of the type mentioned to improve in that it is easier and cheaper Manufacturing also simple and easy on the relevant object is permanently attachable and in addition the damping or insulating properties essentially are not affected.
  • the magnetizable particles are not in the Insulation layer but in the adhesive layer using Integrated binders.
  • the adhesive layer serves as an outer layer of the damping element for sticking to the objects and therefore has adhesive properties.
  • the binder is an aqueous dispersion used in which the magnetizable Particles are embedded.
  • the entire magnetic material in terms of its magnetically adhesive effect come into play because the Adhesive layer in close proximity to the object, such as Body sheet, is located on the flat damping element is attached.
  • the proportion of magnetizable particles on the entire damping element less.
  • the adhesive layer there preferably between 20 and 80 percent by weight, in particular between 30 and 65 percent by weight, magnetic particles applied.
  • the share of the same in the total damping element is even much lower.
  • barium and / or strontium ferrite are preferred.
  • iron oxide powders such as ⁇ Fe 2 O 3 and / or FeO.Fe 2 O 3 can also be used.
  • the average particle size is expediently in the narrow range between 0.1 and 0.4 mm without too much scatter.
  • a layer thickness between 0.5 and 1.5 mm is preferred.
  • Layer thickness latitude can be observed. Since there are none magnetizable particles are embedded, it is also not required, by increasing the layer thickness the impairment the insulating / damping effect through the magnetizable To balance particles. In this respect, too Total thickness of the magnetizable flat damping element relatively low, so that a laying in only narrow spaces without significant compression of the Damping element is possible.
  • an adhesive according to the invention Agent especially for use with anti-drumming materials reached magnetic particles dispersed in a binder are, which is particularly effective as an adhesive itself and / or contains adhesive.
  • the adhesive is one solvent-free aqueous dispersion with an acrylate, Vinyl acetate polymer or propionate in a proportion between 10 and 65% by weight and a thickener, it has one pourable, rollable and / or doctorable consistency during processing.
  • the adhesive is a liquid Mass in the form of a dispersion, which with some heating dries between 20 and 180 ° C under the influence of air, then but still has sufficient adhesive or adhesive effect.
  • this pressure sensitive adhesive has a connection with a rigid support (e.g. a bitumen impregnated Cardboard, a metal foil consisting in particular of aluminum and / or coated paper or the like) one very high structure-borne noise attenuation on what the viscoelastic Behavior of the adhesive. That is, here you can have a very good broadband of the so-called Achieve loss factor, which e.g. with the conventional Magnetic foils are not possible due to the high ferrite content is.
  • a rigid support e.g. a bitumen impregnated Cardboard, a metal foil consisting in particular of aluminum and / or coated paper or the like
  • the agent according to the invention allows objects to be glued on, where both the adhesive and the magnetic Adhesive effect can be applied together. This is it possible to make objects magnetizable if the glue is attached to the object. If the sticky Effect is undesirable, the proportion or type of Binder are chosen so that after the application of adhesive mass such curing takes place that the "Magnetic" sticks well to the object, to the other - free - side of this magnetizable coating of the object but a surface that is no longer sticky remains.
  • a preferred example of the application of the invention "Adhesive" is the coating of foam, e.g. Polyurethane foam, e.g. as a mat or layer on the headlining can be magnetically attached in the motor vehicle. The separation is also very easy for better recycling possible.
  • An example of the self-adhesive formation of the adhesive according to the invention Acrylate 10.0 - 65.0% by weight Resin as a "tackifier" 5.0 - 30.0% by weight Thickener 0.0 - 0.2% by weight Defoamer 0.0 - 0.1% by weight distilled water 0.0 - 0.9% by weight Iron oxide and / or strontium and / or barium ferrite 20.0 - 80.0% by weight Biostabilizer ⁇ 0.01% by weight Crosslinking agent 0.0 - 0.9% by weight Tools 0.0 - 0.9% by weight
  • a non-blocking dispersion after drying such as Acrylate, vinyl acetate copolymer, propionate or the like, used.
  • the mass can also contain thickeners, Defoamers and bio-stabilizers in addition to the magnetizable Have particles which contain in the adhesive mass and remain dispersed even after drying without relevant segregation problems arise.
  • the magnetizable particles 3 are made of barium ferrite and / or strontium ferrite and / or iron oxide powder in the Adhesive layer 2 finely dispersed in the binder 4, which at the same time maintains self-adhesive properties after drying.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Laminated Bodies (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Aerials With Secondary Devices (AREA)

Claims (13)

  1. Elément amortisseur magnétisable en nappe, comprenant une couche isolante qui amortit ou respectivement isole des ondes acoustiques d'objets (6), à une couche d'adhérence (2) reliée à ladite couche isolante et aux particules magnétisables,
    caractérisé en ce que ladite couche d'adhérence (2) est appliquée en tant que couche extérieure et présente des caractéristiques adhésives qui servent au collage auxdits objets (6) pour laquelle une dispersion aqueuse est utilisée comme liant, dans laquelle lesdites particules magnétisables (3) sont noyées.
  2. Elément amortisseur selon la revendication 1,
    caractérisé en ce que lesdites particules magnétiques (3) sont dispersées dans un agent de dispersion servant en tant que liant.
  3. Elément amortisseur selon la revendication 2,
    caractérisé en ce qu'un agent de dispersion aqueux est utilisé, qui présente des caractéristiques auto-adhésives après le séchage.
  4. Elément amortisseur selon la revendication 2 ou 3,
    caractérisé en ce que de l'acrylate est utilisé comme agent de dispersion.
  5. Elément amortisseur selon une quelconque des revendications précédentes,
    caractérisé en ce que de ferrite de baryum est utilisée en tant que particules magnétiques (3).
  6. Elément amortisseur selon une quelconque des revendications précédentes,
    caractérisé en ce que de ferrite de strontium est utilisée en tant que particules magnétiques (3).
  7. Elément amortisseur selon une quelconque des revendications précédentes,
    caractérisé en ce que d'oxyde ferreux sous forme de poudre est utilisé en tant que particules magnétiques (3).
  8. Elément amortisseur selon la revendication 7,
    caractérisé en ce qu'un mélange de ferrites et de poudre de fer est utilisé en tant que particules magnétiques (3).
  9. Elément amortisseur selon une quelconque des revendications précédentes,
    caractérisé en ce que la fraction desdites particules magnétiques (3) dans ladite couche d'adhérence (2) correspond à un niveau entre 20 et 80 pour cent par poids.
  10. Elément amortisseur selon une quelconque des revendications précédentes,
    caractérisé en ce que la taille de particules moyenne desdites particules magnétiques (3) correspond à une valeur entre 0,01 et 0,4 mm.
  11. Elément amortisseur selon une quelconque des revendications précédentes,
    caractérisé en ce que ledit agent de dispersion contient de l'acrylate et/ou des copolymères d'acrylate qui contiennent des groupes de carboxyle.
  12. Elément amortisseur selon une quelconque des revendications précédentes,
    caractérisé en ce que ledit agent de dispersion contient des résines naturelles comme des résines de colophane comme agent adhésif.
  13. Elément amortisseur selon une quelconque des revendications précédentes,
    caractérisé en ce que ledit agent de dispersion contient des résines synthétiques comme des résines de coumarone-en-diène ou des résines polyterpènes comme agent adhésif.
EP96910931A 1995-04-11 1996-03-26 Element d'amortissement plat magnetisable Expired - Lifetime EP0820623B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29506265U 1995-04-11
DE29506265U DE29506265U1 (de) 1995-04-11 1995-04-11 Magnetisierbares flächiges Dämpfungselement und Klebstoff insbesondere zur Anwendung bei Entdröhnmatten
PCT/EP1996/001326 WO1996032709A1 (fr) 1995-04-11 1996-03-26 Element d'amortissement plat magnetisable et adhesif s'utilisant notamment dans des mats antisoniques

Publications (2)

Publication Number Publication Date
EP0820623A1 EP0820623A1 (fr) 1998-01-28
EP0820623B1 true EP0820623B1 (fr) 2001-08-29

Family

ID=8006767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96910931A Expired - Lifetime EP0820623B1 (fr) 1995-04-11 1996-03-26 Element d'amortissement plat magnetisable

Country Status (10)

Country Link
US (1) US5984043A (fr)
EP (1) EP0820623B1 (fr)
JP (1) JPH11505623A (fr)
KR (1) KR19980703688A (fr)
AT (1) ATE205008T1 (fr)
CZ (1) CZ295897A3 (fr)
DE (2) DE29506265U1 (fr)
HU (1) HUP0100359A2 (fr)
PL (1) PL322282A1 (fr)
WO (1) WO1996032709A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20011742A1 (it) * 2001-08-09 2003-02-09 Ilpea Ind Spa Metodo per formare un foglio o pannello smorzante delle vibrazioni, ed articoli con esso ottenuti
US7094478B1 (en) 2002-09-13 2006-08-22 Material Sciences Corporation, Engineered Materials And Solutions Group, Inc. Magnetic damping
WO2005042857A2 (fr) * 2003-09-26 2005-05-12 Magnum Magnetics Corporation Traitement de paroi d'attenuation sonore magnetique
US7172800B2 (en) * 2003-11-03 2007-02-06 Material Sciences Corporation Sheet molding compound damper component, and methods for making and using the same
US7199970B2 (en) * 2003-11-03 2007-04-03 Material Sciences Corporation Damped disc drive assembly, and method for damping disc drive assembly
KR20070114288A (ko) * 2005-03-17 2007-11-30 가부시키가이샤 쇼와 전선 디바이스 테크놀로지 흡음재 및 이를 이용한 구조체
CA2936255A1 (fr) 2015-07-16 2017-01-16 Hydra Heating Industries, LLC Dispositifs de fermeture magnetique destines a l'isolation des tuyaux
US9868268B2 (en) 2015-08-06 2018-01-16 Hydra Heating Industries, Llc. Magnetic clasps for insulation
US9914284B2 (en) 2015-08-06 2018-03-13 Hydra Heating Industries, LLC Magnetic insulation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1209319B (de) * 1963-06-06 1966-01-20 Matec Holding Verfahren und Mittel zur Herstellung von UEberzuegen auf Metallflaechen zwecks Entdroehnung und Abdichtung
CH418664A (de) * 1963-06-06 1966-08-15 Matec Holding Ag Entdröhnungs- und Abdichtungsmittel
DE1594052A1 (de) * 1964-08-11 1969-09-04 Interkeller Ag Verfahren zur Herstellung eines UEberzuges aus einer schmelzbaren bituminoesen Masse auf einer Flaeche mit ferromagnetischen Eigenschaften
US3424270A (en) * 1965-05-12 1969-01-28 Us Plywood Champ Papers Inc Viscoelastic sound-blocking material with filler of high density particles
US4010818A (en) * 1975-06-10 1977-03-08 E. I. Du Pont De Nemours And Company Flexible noise barrier material
JPS60166545A (ja) * 1984-02-10 1985-08-29 Fuji Heavy Ind Ltd 熱融着性防振シ−トの取付方法
DE3711810A1 (de) * 1987-04-08 1988-10-27 Ruetgerswerke Ag Magnetisch haftende daempfungsfolie
US5300355A (en) * 1991-05-31 1994-04-05 Nichias Corporation Vibration damping material
JPH0835538A (ja) * 1994-07-25 1996-02-06 Lintec Corp 制振・補強シート

Also Published As

Publication number Publication date
KR19980703688A (ko) 1998-12-05
HUP0100359A2 (hu) 2001-06-28
WO1996032709A1 (fr) 1996-10-17
EP0820623A1 (fr) 1998-01-28
DE29506265U1 (de) 1996-08-14
PL322282A1 (en) 1998-01-19
CZ295897A3 (cs) 1998-05-13
ATE205008T1 (de) 2001-09-15
US5984043A (en) 1999-11-16
DE59607584D1 (de) 2001-10-04
JPH11505623A (ja) 1999-05-21

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