DE915033C - Process for the production of sound-absorbing materials on a polyurethane basis - Google Patents

Process for the production of sound-absorbing materials on a polyurethane basis

Info

Publication number
DE915033C
DE915033C DEF7795A DEF0007795A DE915033C DE 915033 C DE915033 C DE 915033C DE F7795 A DEF7795 A DE F7795A DE F0007795 A DEF0007795 A DE F0007795A DE 915033 C DE915033 C DE 915033C
Authority
DE
Germany
Prior art keywords
foams
polyurethane
sound
rigid
production
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
Application number
DEF7795A
Other languages
German (de)
Inventor
Dipl-Ing Peter Hoppe
Dr Erwin Weinbrenner
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to DEF7795A priority Critical patent/DE915033C/en
Application granted granted Critical
Publication of DE915033C publication Critical patent/DE915033C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36After-treatment
    • C08J9/38Destruction of cell membranes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cell Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Description

Verfahren zur Herstellung von Schallschluckstoffen auf Polyurethan-Basis Es ist bekannt, daß zur Schallschluckung für Frequenzbereiche über ioo Hz moosartige oder feinporige Schaumstoffe verwendet werden können, wie z. B. Schaumstoffe auf Harnstoffharz-Formaldehydharz-Basis, auf Phenolharz-Formaldehydharz-Basis, Schaumstoffe in starrer oder elastischer Ausführung auf Basis Kautschuk oder synthetischer Kautschuk. Ferner ist bekannt, oder Gesteinswolle für Schallschluckung einzusetzen. Der Schallschluckgrad wird im wesentlichen beeinflußt durch die Porigkeit der Schallschluckstoffe. Kunststoffschaumstoffe mit Zellstruktur, d. h. mit geschlossenen Poren, sind für den vorgesehener, Verwendungszweck nicht geeignet.Process for the production of sound-absorbing materials based on polyurethane It is known that moss-like for sound absorption for frequency ranges above 100 Hz or fine-pored foams can be used, such as. B. foams Urea resin-formaldehyde resin-based, phenolic resin-formaldehyde resin-based, foams in rigid or elastic design based on rubber or synthetic rubber. It is also known to use rock wool for sound absorption. The degree of sound absorption is essentially influenced by the porosity of the sound absorbing materials. Plastic foams with cell structure, d. H. with closed pores, are for the intended purpose not suitable.

Es wurde nun erfindungsgemäß festgestellt, daß Schaumstoffe auf Polyurethan-Basis entsprechender Porengröße in starrer oder elastischer Konsistenz hervorragende Schallschluckeigenschaften besitzen. Der Schallschluckgrad wird erfindungsgemäß während der Fertigung durch Beeinflussung der Porengröße gesteuert. Während bei den elastischen Schaumstoffen auf Polyurethan-Basis durch einen Wringprozeß die Poren so geöffnet werden, daß eine Schwammstruktur entsteht, werden bei starren Schaumstoffen die Poren durch eine Heißdampfbehandlung bei i 4o' oder durch ein Durchblasen der verwendeten Platten mit Preßluft geöffnet. D!as letztere Verfahren hat den Vorteil, daß die zweckmäßig-erweise aus Blöcken herausgeschnittenen Materialien, z. B. Platten, in ihren Endmassen sich nicht mehr verändern, während beim Heißdampfverfahren ein Richten der sich unter Wärme verformenden Platten erforderlich wird. Der Schallschluckeffekt für Schaumstoffe auf Polyurethan- Basis kann so weit gesteuert werden, daß auch die tiefen Frequenzen ab 5o Hz aufwärts bis goo/o geschluckt werden.It has now been found according to the invention that foams based on polyurethane Corresponding pore size in a rigid or elastic consistency, excellent sound absorption properties own. According to the invention, the degree of sound absorption is determined during manufacture Influencing the pore size controlled. While with the elastic foams On the basis of polyurethane by a wringing process, the pores are opened so that a sponge structure is created, the pores of rigid foams open a superheated steam treatment at i 4o 'or by blowing through the plates used opened with compressed air. The latter method has the advantage that it is expedient materials cut from blocks, e.g. B. Plates, in their final dimensions no longer change, while with the superheated steam process a straightening of the under Heat deforming plates is required. The sound absorption effect for foams on polyurethane Basis can be controlled to such an extent that the low frequencies from 50 Hz up to goo / o are swallowed.

Man verwendet zweckmäßig Polyurethanschaumstoffe, die geeignete Brandschutzmittel, vorzugsweise auf Basis Trichloräthylphosphat bziv. -phosphit oder Ammanphosphat enthalten, so daß die im Bauwesen erforderlichen Brandschutzmaßnahmen erfüllt werden können.It is advisable to use polyurethane foams that contain suitable fire retardants, preferably based on trichloroethyl phosphate bziv. phosphite or amman phosphate included, so that the fire protection measures required in construction are met can.

Es ist fernerhin möglich, die Polyuretlianschaumstoff-Akustikmaterialien durch Zusatz von geeigneten Schutzmitteln termitenfest zu machen.It is also possible to use the polyurethane foam acoustic materials to make them termite-proof by adding suitable protective agents.

Die Polyurethanschaumstoff-Akustikplatten lassen sich mit Klebern, vorzugsweise auf Polyurethan-Basis, auf Holz, Metall, Kunststoff, Backsteine oder Beton einwandfrei verkleben. Die Hartschaumstoffplatten auf Polyurethan-Basis für Schallschluckzwecke können ferner durch eine Wärmenachbehandlung in beliebige Formen ,gebracht werden, so daß eine einfache Montage am Bau erfolgen kann. Die Polyurethanscha,umstoffe gemäß der Erfindung bewähren sich vorzugsweise für das Bauwesen, den Fahrzeug- und Gerätehau. Die Akustikplatten können nach Belieben eingefärbt werden.The polyurethane foam acoustic panels can be fixed with adhesives, preferably on a polyurethane basis, on wood, metal, plastic, bricks or Glue concrete perfectly. The rigid foam sheets based on polyurethane for Sound-absorbing purposes can also be given any shape by post-heat treatment , are brought, so that a simple assembly can be done on site. The polyurethane materials according to the invention prove themselves preferably for the construction industry, the vehicle and Tool shed The acoustic panels can be colored as desired.

Die Entdröhnung von Blechen kann mit Leichtstoffen, vorzugsweise auf P'olyurethan-Basis"erfolgen. Dabei bietet der Polyurethanscha,umstoff durch seine Porenstruktur die Möglichkeit, daß neben dem Entdröhnungseffekt, der im wesentlichen eine Erhöhung der statischen Stabilität der dünnen Bleche ist, gleichzeitig eine Schallschluckung erreicht wird.The deadening of sheet metal can be done with lightweight materials, preferably on Polyurethane base ". The polyurethane material offers through its Pore structure the possibility that in addition to the anti-drumming effect, which is essentially an increase in the static stability of the thin sheets is, at the same time, a Sound absorption is achieved.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Schallschluckstoffen auf Polyurethan-Basis, dadurch gekennzeichnet, @daß starre, halbstarre oder elastische Schaumstoffe aus Polyurethanen einer porenöffnenden Nachbehandlung unterworfen werden. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß elastische Schaumstoffe einem Wringprozeß unterworfen werden. 3. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß starre Schaumstoffe mit Heißdampf vorzugsweise bei etwa i4o" C oder durch Durchblasen der Materialien mit Preßluft bis zur gewünschten Porenöffnung behandelt werden. 4. Verfahren nach Anspruch i his 3, dadurch gekennzeichnet, daß Schaumstoffe verwendet werden, die Trichloräthylpho,sphat oder -phosphit bzw. Ammanphosphat enthalten. 5. Verfahren nach Anspruch i bis 4, dadurch gekennzeichnet, daß Schaumstoffe verwendet werden, die Schutzmittel gegen Termiten und Bakterien enthalten.PATENT CLAIMS: i. Process for the production of sound absorbing substances based on polyurethane, characterized in that rigid, semi-rigid or elastic Polyurethane foams are subjected to a pore-opening aftertreatment. a. Method according to claim i, characterized in that elastic foams be subjected to a wringing process. 3. The method according to claim i, characterized in that that rigid foams with superheated steam preferably at about 14o "C or by blowing through the materials are treated with compressed air up to the desired pore opening. 4. The method according to claim i to 3, characterized in that foams are used which contain trichloroethylphosphate, sphat or phosphite or ammonium phosphate. 5. The method according to claim i to 4, characterized in that foams are used containing repellants against termites and bacteria.
DEF7795A 1951-12-04 1951-12-04 Process for the production of sound-absorbing materials on a polyurethane basis Expired DE915033C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF7795A DE915033C (en) 1951-12-04 1951-12-04 Process for the production of sound-absorbing materials on a polyurethane basis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF7795A DE915033C (en) 1951-12-04 1951-12-04 Process for the production of sound-absorbing materials on a polyurethane basis

Publications (1)

Publication Number Publication Date
DE915033C true DE915033C (en) 1954-07-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEF7795A Expired DE915033C (en) 1951-12-04 1951-12-04 Process for the production of sound-absorbing materials on a polyurethane basis

Country Status (1)

Country Link
DE (1) DE915033C (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955632C (en) * 1954-09-02 1957-01-03 Correcta Werke Gmbh Sound absorbing plate for rooms at risk of condensation
DE1043630B (en) * 1955-12-24 1958-11-13 Phoenix Gummiwerke Ag Process for the production of rigid, flame-retardant foam plastics
DE1052113B (en) * 1955-07-06 1959-03-05 Ici Ltd Use of flame retardants in polyurethane foams
DE1088708B (en) * 1956-12-05 1960-09-08 Gen Tire & Rubber Co Process for the production of flexible, elastic polyurethane foams that are resistant to aging due to the action of moisture
DE1119505B (en) * 1956-12-05 1961-12-14 Gen Tire & Rubber Co Process for the production of highly elastic and moisture-resistant polyurethane foam compositions
DE1149521B (en) * 1954-04-02 1963-05-30 Hudson Foam Plastics Corp Process for producing an elastic foam having open and closed cells
DE1162537B (en) * 1956-04-17 1964-02-06 Dr Wilhelm Aldag Use of a flexible sheet made of foamed polystyrene
US3171820A (en) * 1964-02-17 1965-03-02 Scott Paper Co Reticulated polyurethane foams and process for their production
DE2647416A1 (en) * 1975-10-24 1977-05-05 Bridgestone Tire Co Ltd PROCESS FOR PRODUCING A FLAME RESISTANT, NO SMOKE DEVELOPING AND NON-SHRINKING POLYURETHANE FOAM
DE4423283A1 (en) * 1994-07-05 1996-01-11 Linpac Technologie Gmbh Fluid-absorbing foam material mfr., used in packaging,
DE102005016039B4 (en) * 2005-04-07 2007-09-27 Sartorius Biotech Gmbh Method for opening the skin layer of plastic foam webs

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149521B (en) * 1954-04-02 1963-05-30 Hudson Foam Plastics Corp Process for producing an elastic foam having open and closed cells
DE955632C (en) * 1954-09-02 1957-01-03 Correcta Werke Gmbh Sound absorbing plate for rooms at risk of condensation
DE1052113B (en) * 1955-07-06 1959-03-05 Ici Ltd Use of flame retardants in polyurethane foams
DE1043630B (en) * 1955-12-24 1958-11-13 Phoenix Gummiwerke Ag Process for the production of rigid, flame-retardant foam plastics
DE1162537B (en) * 1956-04-17 1964-02-06 Dr Wilhelm Aldag Use of a flexible sheet made of foamed polystyrene
DE1088708B (en) * 1956-12-05 1960-09-08 Gen Tire & Rubber Co Process for the production of flexible, elastic polyurethane foams that are resistant to aging due to the action of moisture
DE1119505B (en) * 1956-12-05 1961-12-14 Gen Tire & Rubber Co Process for the production of highly elastic and moisture-resistant polyurethane foam compositions
US3171820A (en) * 1964-02-17 1965-03-02 Scott Paper Co Reticulated polyurethane foams and process for their production
DE2647416A1 (en) * 1975-10-24 1977-05-05 Bridgestone Tire Co Ltd PROCESS FOR PRODUCING A FLAME RESISTANT, NO SMOKE DEVELOPING AND NON-SHRINKING POLYURETHANE FOAM
DE4423283A1 (en) * 1994-07-05 1996-01-11 Linpac Technologie Gmbh Fluid-absorbing foam material mfr., used in packaging,
DE102005016039B4 (en) * 2005-04-07 2007-09-27 Sartorius Biotech Gmbh Method for opening the skin layer of plastic foam webs

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