DE2549672C3 - Viscous agent for damping mechanical and acoustic vibrations - Google Patents

Viscous agent for damping mechanical and acoustic vibrations

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Publication number
DE2549672C3
DE2549672C3 DE2549672A DE2549672A DE2549672C3 DE 2549672 C3 DE2549672 C3 DE 2549672C3 DE 2549672 A DE2549672 A DE 2549672A DE 2549672 A DE2549672 A DE 2549672A DE 2549672 C3 DE2549672 C3 DE 2549672C3
Authority
DE
Germany
Prior art keywords
acoustic vibrations
damping
damping mechanical
grain size
viscous 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
Application number
DE2549672A
Other languages
German (de)
Other versions
DE2549672B2 (en
DE2549672A1 (en
Inventor
Kaspar 8000 Muenchen Lochner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2549672A priority Critical patent/DE2549672C3/en
Priority to IT29001/76A priority patent/IT1123669B/en
Priority to SE7612304A priority patent/SE418973B/en
Priority to GB46120/76A priority patent/GB1549254A/en
Priority to FR7633449A priority patent/FR2330762A1/en
Publication of DE2549672A1 publication Critical patent/DE2549672A1/en
Publication of DE2549672B2 publication Critical patent/DE2549672B2/en
Application granted granted Critical
Publication of DE2549672C3 publication Critical patent/DE2549672C3/en
Expired legal-status Critical Current

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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M5/00—Solid or semi-solid compositions containing as the essential lubricating ingredient mineral lubricating oils or fatty oils and their use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/006—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium characterised by the nature of the damping medium, e.g. biodegradable
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    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/044—Siloxanes with specific structure containing silicon-to-hydrogen bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/06—Instruments or other precision apparatus, e.g. damping fluids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/10—Semi-solids; greasy

Description

Die Erfindung bezieht sich auf ein viskoses Mittel zur Dampfung von mechanischen und akustischen Schwingungen in Form eines pastenartigen Plastisols.The invention relates to a viscous means for damping mechanical and acoustic Vibrations in the form of a paste-like plastisol.

Unter dem Begriff Schwingungen sind auch Stoßbclastungen zu verstehen, wie sie beispielsweise bei Stoßdämpfern auftreten.The term vibrations also includes shock loads to understand how they occur in shock absorbers, for example.

Es sind Elemente zum Dämpfen Von mechanischen Schwingungen bekannt die als Dämpfmittei öle und darin eintauchende Kolben mit gesteuerten Durchlässen aufweisen. Diese Elemente sind wegen der mechanisch bewegten Teile störanfällig, Außerdem schäumen die verwendeten Öle im Bereich der Durchlässe auf, so daß verhältnismäßig frühzeitig störende Oxydationserscheinungen auftreten.There are elements for damping mechanical The oils and vibrations are known as damping agents have pistons immersed therein with controlled passages. These elements are prone to failure because of the mechanically moving parts The oils used foam up in the area of the passages, so that disruptive ones relatively early on Oxidation phenomena occur.

5555

6ö6ö

65 Es sind auch schon dilatationsfähige Dämpfmittel vorgeschlagen worden, die mit zunehmender Belastung aufhärten. 65 Damping agents capable of dilatation have also been proposed, which harden with increasing load.

Derartige Dämpfmittel sind jedoch entsprechend der Abhängigkeit ihrer Viskosität von der jeweiligen Belastung nur innerhalb enger Frequenz- und Amplitudengrenzen der zu dämpfenden Schwingungen voll wirksam. Darüber hinaus ist die Schalldämmung von Elementen, die derartige Dämpfmedien enthalten, wegen der Aufhärtungserscheinungen unzureichend.Such damping means are, however, according to the dependence of their viscosity on the respective Load only within narrow frequency and amplitude limits of the vibrations to be dampened effective. In addition, the sound insulation of elements that contain such damping media, inadequate because of the hardening phenomena.

Es sind auch hydraulische Medien bekannt, denen Aktivkohle zugesetzt ist. Dieser Zusatz hat jedoch lediglich die Wirkung eines Gasabsorptionsmittels (DE-AS 11 28 586).Hydraulic media are also known to which activated carbon has been added. However, this addition only has the effect of a gas absorbent (DE-AS 11 28 586).

Darüber hinaus sind Schmiermittel bekannt, die aus einem graphithaltigen Gemisch mit einem Ölanteil bestehen. Derartige Schmiermittel eigne., sich auf Grund ihres Viskositätsgrades und auch ihrer übrigen Verhaltensweise nicht zur Dämpfung von mechanischen und akustischen Schwingungen.In addition, lubricants are known which consist of a graphite-containing mixture with an oil component exist. Such lubricants are suitable, because of their degree of viscosity and also their rest Behavior not to dampen mechanical and acoustic vibrations.

Der Erfindung liegt die Aufgabe zugrunde, ein Medium der eingangs beschriebenen A.rt zu schaffen, das über weite Temperatur- und Belastungsbereiche eine praktisch konstante Wirkung aufweist, die sich sowohl als Stoß- und Vibrationsabsorption, als auch als Schalldämmung, insbesondere zur Dämpfung von Körperschall, auswirkt.The invention is based on the object of creating a medium of the type described at the beginning which has a practically constant effect over wide temperature and load ranges, which both as shock and vibration absorption, as well as Sound insulation, in particular for damping structure-borne noise, has an effect.

Erfindungsgemäß wird diese Aufgabe durch ein viskoses Mittel gelöst, bestehend ausAccording to the invention, this object is achieved by a viscous agent, consisting of

1. einem Di- oder Triester als thermisch hoch belastbare ölkomponente,1. a di- or triester as a thermally highly resilient oil component,

2. gemahlenen, vorzugsweise blattförmig ausgebildeten Graphitteilchen eines Reinheitsgrades von wenigstens 98,5% und einer Korngröße, die kleiner als 0,8 ist,2. ground, preferably sheet-shaped graphite particles of one degree of purity of at least 98.5% and a grain size that is smaller than 0.8,

3. einem Zusatz von Antioxydantien, vorzugsweise bestehend aus sterisch gehinderten Phenolen,3. an addition of antioxidants, preferably consisting of sterically hindered phenols,

4. einem Zusatz von Netzmitteln.4. an addition of wetting agents.

Die Viskosität einer derart erfindungsgemäß zusammengesetzten Masse ist über weite Temperatur- und Belastungsbereiche konstant. Außerdem zeigt sie ein zähplastisches Verhalten.The viscosity of such a composition according to the invention is over wide temperature and load areas constant. In addition, it shows a viscoplastic behavior.

Die in dem Medium enthaltenen blattförmigen Graphitteilchen orientieren sich bei Druckaufbau zunächst quer zur Druckrichtung. Wenn das Dämpfmedium in Fluß gerät, insbesondere wenn es wie bei Dämpfeinrichtungen mit bekanntem mechanischen Aufbau durch Düsen, Spalten oder dergleichen öffnungen gepreßt wird, richten sich dit Graphitteilchen in Strömungsrichtung aus. Diese Erscheinung ist ausschlaggebend für eine gleichmaßige Dämpfwirkung vom niederfrequenten bis zum hochfrequenten Schwingungsbereich.The sheet-like graphite particles contained in the medium initially orient themselves when pressure is built up across the printing direction. If the damping medium starts to flow, especially if it is like at Damping devices with known mechanical structure through nozzles, gaps or similar openings is pressed, the graphite particles align themselves in the direction of flow. This phenomenon is crucial for an even dampening effect from low-frequency to high-frequency Vibration range.

Entsprechend der Beimengung von Graphit läßt sich der Viskositätsgrad des erfindungsgemäßen Mediums weitgehend beeinflussen und damit dem jeweiligen Verwendungszweck anpassen.The degree of viscosity of the medium according to the invention can be determined according to the addition of graphite largely influence and thus adapt to the respective purpose.

Als weitere positive Eigenschaft weist das erfindungsgemäße Medium dauerelastisches Verhalten sowohl in bezug auf die mechanische Belastung als auch bei wechselnden Temperatureinflüssen in den Grenzen zwischen minus 30 und plus 60° C Umgebungstemperatur auf, Die Dämpfwirkung wird durch Verwendung Von hochreinem Graphit, der netzaktiven ölen zugesetzt wird, erhöht, Besonders geeignet sind hierfür thermisch hoch belastbare, langkettige Diesterund Triesterfluide, wie z, B. Trimethylpropanoctyldecylester, die mit Antioxydantien stabilisiertAs a further positive property, the medium according to the invention exhibits both permanently elastic behavior with regard to the mechanical load as well as changing temperature influences within the limits between minus 30 and plus 60 ° C ambient temperature on, The damping effect is achieved through the use of high-purity graphite, which is network-active oils is added, increases, are particularly suitable for this purpose, long-chain diester and thermally highly resilient Triester fluids, such as trimethylpropanoctyldecyl ester, stabilized with antioxidants

sind und die Netzmittel gegen Alterung und Phasentrennung enthalten. Die Stabilisierung erfolgt vorteilhaft durch sterisch gehinderte Phenole.and contain wetting agents against aging and phase separation. The stabilization takes place advantageously by sterically hindered phenols.

Das erfindungsgemäße Medium weist neben den geschilderten Eigenschaften hohe Schmierfähigkeit auf und wirkt selbstdichiend. Außerdem ist es mit hohen Drücken belastbar. Seine Fließfähigkeit ist so ausgeprägt, daß die Strömung des Mediums hinter Düsen oder Spalten nicht abreißt.In addition to the properties described, the medium according to the invention has a high lubricity and acts self-sealing. In addition, it can withstand high pressures. Its fluidity is like that pronounced that the flow of the medium does not stop behind nozzles or gaps.

Ein weiterer Vorteil des erfindungsgemäßen Mediums ist in seiner hohen Wärmeleitfähigkeit zu sehen, die sich positiv auf seine gleichbleibenden Eigenschaften in weiten Temperaturbereichen auswirkt.Another advantage of the medium according to the invention can be seen in its high thermal conductivity, which has a positive effect on its consistent properties over a wide temperature range.

Ein Ausführungsbeispiel des erfindungsgemäßen Mediums ist in der folgenden Zusammenstellung wiedergegeben: An embodiment of the medium according to the invention is shown in the following summary:

50% Trimethylpropanoctyldecylester50% trimethyl propanoctyl decyl ester

40% (Gewicht) gemahlener Graphit mit einem Reinheitsgrad von 99% und einer Korngröße kleiner als 0,8 μ 5% Netzmittel, z.B. Aminsäure40% (weight) ground graphite with a purity of 99% and a grain size smaller as 0.8 μ 5% wetting agent, e.g. amino acid

3 % Siliziumdioxyd mit einer Korngröße kleiner als 0,1 μ3% silicon dioxide with a grain size smaller than 0.1 μ

2% sterisch gehindertes Phenol.2% hindered phenol.

Das Medium mit dieser Zusammensetzung weist eine Dichte bei 15° C von etwa 1,3 g/ml und eine Viskosität von 1,8· 10" cP bei 25° C auf. Sein nach der Cleveland-Methode gemessener Flammpunkt liegt bei 290° C, d. h. daß das Medium bei konstantbleibender Kennlinie auf Grund der thermischen Stabilität kurzzeitig bis auf diese Temperatur und unter Druck sogar bis zu 400° C belastbar ist.The medium with this composition has a density at 15 ° C of about 1.3 g / ml and a Viscosity of 1.8x10 "cP at 25 ° C. Its flash point measured by the Cleveland method is at 290 ° C, i.e. H. that the medium with constant characteristic curve due to the thermal stability can be loaded up to this temperature for a short time and even up to 400 ° C under pressure.

Die Viskosität des Mediums kann durch Änderung des Graphit- bzw. Esteranteils verändert und damit den jeweiligen Erfordernissen angepaßt werden. Wichtig ist der hohe Reinheitsgrad des Graphits, der nicht unter 98,5% liegen soll.The viscosity of the medium can be changed by changing the graphite or ester content and thus be adapted to the respective requirements. What is important is the high degree of purity of the graphite, the should not be below 98.5%.

Für manche Anwendungszwecke ist es vorteilhaft, wenn das Medium nicht aggressiv und nicht toxisch ist.For some purposes it is advantageous if the medium is non-aggressive and non-toxic is.

Das erfindungsgemäße Medium kann vorteilhaft auch in hydraulischen Stell- und Steueranlagen sowie bei Druckerzeugern wie z. B.
Verwendung finden.The medium according to the invention can advantageously also be used in hydraulic actuating and control systems as well as in pressure generators such. B.
Find use.

Claims (6)

Patentansprüche:Patent claims: 1. Viskoses Mittel zur Dämpfung von mechanischen und akustischen Schwingungen in Form eines pastenartigen Plastisols, bestehend aus1. Viscous means for damping mechanical and acoustic vibrations in the form of a paste-like plastisols consisting of 1) einem Di- oder Triester als thermisch hoch belastbare ölkomponente,1) a di- or tri-ester as a thermally highly resilient oil component, 2) gemahlenen, vorzugsweise blattförmig ausgebildeten Graphitteilchen eines Reinheits- '° grades von wenigstens 98,5% und einer Korngröße, die kleiner als 0,8 μ ist,2) ground, preferably sheet-shaped graphite particles of a purity '° degree of at least 98.5% and a grain size that is smaller than 0.8 μ, 3) einem Zusatz von Antioxydantien, vorzugsweise bestehend aus sterisch gehinderten Phenolen,3) an addition of antioxidants, preferably consisting of sterically hindered ones Phenols, 4) einem Zusatz von Netzmitteln.4) an addition of wetting agents. 2. Viskoses Mittel zur Dämpfung von mechanischen und akustischen Schwingungen nach Anspruch 1, dadurch gekennzeichnet, daß es gemahlene, blattförmig ausgebildete Graphitteilchen enthält, die ?\> etwa 50% eine Korngröße kleiner als 0,2 μ aufweisen.2. Viscous agent for damping mechanical and acoustic vibrations according to claim 1, characterized in that it contains ground, sheet-like graphite particles, which ? \> About 50% have a grain size smaller than 0.2 μ. 3. Viskoses Mittel zur Dämpfung von mechanischen und akustischen Schwingungen nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß es als ölkomponente einen Trimethylpropanoctyldecylester enthält.3. Viscous agent for damping mechanical and acoustic vibrations according to the Claims 1 and 2, characterized in that the oil component is a trimethylpropanoctyldecyl ester contains. 4. Viskoses Mittel zur Dämpfung von mechanischen und akustischen Schwingungen nach Anspruch 1, dadurch gekennzeichnet, daß es als Netzmittel eine Aminseife enthält.4. Viscous agent for damping mechanical and acoustic vibrations according to claim 1, characterized in that it contains an amine soap as a wetting agent. 5. Mittel zur Dämpfung von mechanischen und akustischen Schwingungen nach Anspruch 1, bestehend aus5. Means for damping mechanical and acoustic vibrations according to claim 1, consisting the end 1) 50 Gewichtsprozent Trimethyipropanociyi· decylester1) 50 percent by weight trimethyipropanociyi decyl ester 2) 40 Gewichtsprozent Graphit mit einem Reinheitsgrad von 99% und einer Korngröße kleiner als 0,8 μ2) 40 percent by weight graphite with a purity of 99% and a grain size less than 0.8 μ 3) 5 Gewichtsprozent Netzmittel3) 5 percent by weight wetting agent 4) 3% Süiciumdioxyd mit einer Korngröße kleiner als 0,1 μ4) 3% silicon dioxide with a grain size smaller than 0.1 μ 5) 2% sterisch gehindertem Phenol.5) 2% hindered phenol. 6. Verwendung des viskosen Mittels nach Anspruch 1 als Mittel zur Dämpfung von mechanisehen und akustischen Schwingungen in hydraulischen Stell- und Steueranlagen sowie in Druckerzeugern. 6. Use of the viscous agent according to claim 1 as a means for damping mechanisehen and acoustic vibrations in hydraulic actuating and control systems as well as in pressure generators.
DE2549672A 1975-11-05 1975-11-05 Viscous agent for damping mechanical and acoustic vibrations Expired DE2549672C3 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE2549672A DE2549672C3 (en) 1975-11-05 1975-11-05 Viscous agent for damping mechanical and acoustic vibrations
IT29001/76A IT1123669B (en) 1975-11-05 1976-11-03 DISPERSION OF DAMPING MEANS IN THE FORM OF PASTA
SE7612304A SE418973B (en) 1975-11-05 1976-11-04 PASTAL-like attenuator dispersion and its use for attenuation of mechanical and acoustic oscillations
GB46120/76A GB1549254A (en) 1975-11-05 1976-11-05 Damping composition
FR7633449A FR2330762A1 (en) 1975-11-05 1976-11-05 AMORTIZING AGENT, PASTE, IN THE FORM OF A DISPERSION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2549672A DE2549672C3 (en) 1975-11-05 1975-11-05 Viscous agent for damping mechanical and acoustic vibrations

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DE2549672A1 DE2549672A1 (en) 1977-05-12
DE2549672B2 DE2549672B2 (en) 1978-09-21
DE2549672C3 true DE2549672C3 (en) 1979-06-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207654A1 (en) * 1981-03-03 1982-10-28 Schiedel GmbH & Co, 8000 München Paste-like dampener, method for its manufacture and its use

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059936A1 (en) * 1981-03-03 1982-09-15 Schiedel GmbH & Co. Paste-like damping medium, process for its preparation and its use
US4452437A (en) * 1981-04-20 1984-06-05 Kaspar Lochner Hydraulic-operating shock and vibration absorber and damper
GB2314341A (en) * 1996-05-21 1997-12-24 John Richard Drewe Multiphase mixture for use in fluid dynamics
WO1998027359A2 (en) * 1996-12-04 1998-06-25 Henkel Corporation Shock absorber containing biodegradable fluid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207654A1 (en) * 1981-03-03 1982-10-28 Schiedel GmbH & Co, 8000 München Paste-like dampener, method for its manufacture and its use

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DE2549672A1 (en) 1977-05-12

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