SIST EN 12092:2002
(Main)Adhesives - Determination of viscosity
Adhesives - Determination of viscosity
This European Standard specifies six methods which, experience has shown, are suitable for measuring the viscosity of a wide range of adhesives:
- rotational viscometer method;
- cone and plate viscometer method;
- falling ball viscometer method;
- glass capillary viscometer method;
- flow cup method;
- pressurised extrusion method.
This standard does not intend to describe equipment, which is unique to one manufacturer, rather it describes generic types of viscometer. The instruments described operate on very different principles making it inadvisable to compare results from one type of viscometer with those from another. However, results from different instruments of the same type should be comparable.
NOTE 1 Some modern viscometers incorporate integrated electronic measuring devices and have a high degree of automation. The user will not necessarily have access to (or need to know) full details of an instrument's measuring systems. However, all viscometers are capable of being calibrated and, to conform to this standard, the viscometer used should be calibrated in the appropriate viscosity range before a test. Certified calibration fluids should be used for this purpose and evidence of calibration given with the test results.
Klebstoffe - Bestimmung der Viskosität
Diese Europäische Norm legt sechs Verfahren fest, die, wie die Erfahrung gezeigt hat, zur Messung der
Viskosität in einem großen Klebstoffbereich geeignet sind:
- Rotationsviskosimeter-Verfahren,
- Kegel-Platte-Viskosimeter-Verfahren,
- Kugelfallrohrviskosimeter-Verfahren,
- Glaskapillarviskosimeter-Verfahren,
- Auslaufbecher-Verfahren,
- Extrusions-Verfahren.
Diese Norm beabsichtigt nicht, Instrumente einzelner Hersteller zu beschreiben, sie will vielmehr nur den Ein-satz
gebräuchlicher Viskosimetertypen festlegen. Alle aufgeführten Geräte arbeiten nach unterschiedlichen
Prinzipien. Es ist daher nicht zu empfehlen, die mit einem Viskosimetertyp erhaltenen Ergebnisse mit denen
eines anderen Typs zu vergleichen. Ergebnisse von unterschiedlichen Geräten der gleichen Art sollten
hingegen vergleichbar sein.
ANMERKUNG 1 Einige moderne Viskosimeter verfügen über eingebaute elektronische Messvorrichtungen und einen
hohen Automatisierungsgrad. Der Benutzer wird nicht notwendigerweise (oder benötigt keinen) Zugang zu allen Einzelheiten
des Messsystems im Gerät haben. Alle Viskosimeter sind jedoch kalibrierfähig und jedes verwendete Viskosimeter sollte
zur Übereinstimmung mit dieser Norm im festgelegten Bereich vor einer Prüfung kalibriert werden. Zu diesem Zweck soll-ten
nur zertifizierte Kalibrierflüssigkeiten verwendet und Angaben zur Eichung mit den Prüfergebnissen vermerkt werden.
ANMERKUNG 2 Die Eigenschaften vieler Klebstoffe reagieren gegenüber Prüfbedingungen sehr empfindlich. Es ist
daher wichtig, dass der Prüfbericht umfassende Informationen über die Ausführung der Prüfung enthält.
Adhésifs - Détermination de la viscosité
La présente Norme européenne spécifie six méthodes qui, comme l'expérience l'a prouvé, conviennent pour la mesure de la viscosité d'une large gamme d'adhésifs :
3 une méthode a viscosimetre rotatif ;
3 une méthode a viscosimetre cône/plan ;
3 une méthode a viscosimetre a chute de bille ;
3 une méthode a viscosimetre a capillaire en verre ;
3 une méthode a viscosimetre a coupe d'écoulement ;
3 une méthode pour extrusion sous pression.
La présente norme cherche moins a décrire un équipement, qui varie selon les fabricants, que des grands types de viscosimetres. Les instruments décrits fonctionnent selon des principes tres différents, ce qui rend impossible toute comparaison des résultats entre les différents types de viscosimetres. Il convient cependant de comparer les résultats de différents instruments du meme type.
NOTE 1 Certains viscosimetres modernes integrent des appareils de mesure électroniques et sont fortement automatisés. Il se peut donc que l'utilisateur n'ait pas acces a tous les détails concernant le systeme de mesure de l'instrument (ou n'ait pas besoin de les connaître). Tous les viscosimetres peuvent cependant etre étalonnés et, pour etre conformes a la présente norme, il convient que les viscosimetres utilisés soient étalonnés avant essai dans la plage de viscosité appropriée. Pour ce faire, il convient d'utiliser des fluides d'étalonnage certifiés et la preuve de l'étalonnage fournit avec les résultats de l'essai.
NOTE 2 Les propriétés de beaucoup d'adhésifs sont tres sensibles aux conditions d'essai. Il est donc important que le rapport d'essai contienne des informations détaillées sur la conduite de l'essai.
Lepila - Določevanje viskoznosti
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Klebstoffe - Bestimmung der ViskositätAdhésifs - Détermination de la viscositéAdhesives - Determination of viscosity83.180LepilaAdhesivesICS:Ta slovenski standard je istoveten z:EN 12092:2001SIST EN 12092:2002en01-september-2002SIST EN 12092:2002SLOVENSKI
STANDARD
SIST EN 12092:2002
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12092October 2001ICS 83.180English versionAdhesives - Determination of viscosityAdhésifs - Détermination de la viscositéKlebstoffe - Bestimmung der ViskositätThis European Standard was approved by CEN on 30 September 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12092:2001 ESIST EN 12092:2002
EN 12092:2001 (E)2ContentsForeword.31Scope.42Normative references.43Terms and definitions.54Choice of the preferred method.55Safety.56Test methods.5Annex A (informative)
Dynamic and kinematic viscosity. Definition and calculation.12SIST EN 12092:2002
EN 12092:2001 (E)3ForewordThis European Standard has been prepared by Technical Committee CEN/TC 193 "Adhesives", the secretariat ofwhich is held by AENOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by April 2002, and conflicting national standards shall be withdrawn at the latest byApril 2002.In this standard the Annex A is informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.SIST EN 12092:2002
EN 12092:2001 (E)41 ScopeThis European Standard specifies six methods which, experience has shown, are suitable for measuring theviscosity of a wide range of adhesives:- rotational viscometer method;- cone and plate viscometer method;- falling ball viscometer method;- glass capillary viscometer method;- flow cup method;- pressurised extrusion method.This standard does not intend to describe equipment, which is unique to one manufacturer, rather it describesgeneric types of viscometer. The instruments described operate on very different principles making it inadvisable tocompare results from one type of viscometer with those from another. However, results from different instrumentsof the same type should be comparable.NOTE 1
Some modern viscometers incorporate integrated electronic measuring devices and have a high degree of automation.The user will not necessarily have access to (or need to know) full details of an instruments measuring systems. However, allviscometers are capable of being calibrated and, to conform to this standard, the viscometer used should be calibrated in theappropriate viscosity range before a test. Certified calibration fluids should be used for this purpose and evidence of calibrationgiven with the test results.NOTE 2
The properties of many adhesives are very sensitive to test conditions. It is important therefore that the test reportcontains comprehensive information on the conduct of the test.2 Normative referencesThis European Standard incorporates by dated or undated reference provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this Europeanstandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 923Adhesives — Terms and definitions.EN 1066Adhesives – Sampling.EN 1067Adhesives — Determination and preparation of samples fortesting.EN ISO 2431Paints and varnishes — Determination of flow time by use of flowcups (ISO 2431:1993, including Technical corrgendum 1:1994).EN ISO 2555Plastics — Resins in the liquid state or as emulsions ordispersions — Determination of apparent viscosity by theBrookfield test method (ISO 2555:1989).EN ISO 3104Petroleum products — Transparent and opaque liquids —Determination of kinematic viscosity and calculation of dynamicviscosity (ISO 3104:1994).SIST EN 12092:2002
EN 12092:2001 (E)5EN ISO 3219Plastics — Polymers/resins in the liquid or as emulsions ordispersions — Determination of viscosity using a rotationalviscometer with defined shear rate (ISO 3219:1993).ISO 3105Glass capillary kinematic viscometers — Specifications andoperating instructions.ISO 4575Plastics — Polyvinyl chloride pastes — Determination of apparentviscosity using the Severs viscometer.ISO/DIS 12058-2Plastics — Determination of viscosity using a falling ballviscometer – Part 2: Free-falling-ball method.3 Terms and definitionsFor the purposes of this European Standard the following term and definition, together with those given in EN 923,apply.3.1viscosityproperty of a material to resist deformation increasingly with increased rate of deformation4 Choice of the preferred methodThe preferred method shall be chosen according to the types and requirements of the adhesives used.For Newtonian liquids with viscosity below 10 Pa·s, the method described in 6.5 is preferred. The alternativemethods are given in 6.4 and 6.6.For Newtonian liquids with a viscosity higher than 10 Pa·s, the methods described in 6.2 and 6.7 are preferred.For non-Newtonian liquids the method described in 6.3 is preferred. The method given in 6.2 can also be used.NOTENewtonian liquid or ideal liquid is defined as a liquid characterized by a constant value for the shear stress divided bythe rate of shear in simple shear flow and with zero normal stress differences.Non-Newtonian liquid or non-ideal liquid is defined as a liquid not exhibiting Newtonian behaviour.5 SafetyPersons using this standard shall be familiar with normal laboratory practice.This standard does not purport to address all the safety problems, if any, associated with its use.It is the responsibility of the user to establish health and safety practices and to ensure compliance with anyEuropean and national regulatory conditions.6 Test methods6.1 GeneralAll the procedures described in the following test methods shall be carried out in duplicate. The difference betweenthe values of two consecutive tests shall be less than 5% and less than 3% for the test method described in 6.2, inparticular. If this is not the case, further tests shall be carried out until this requirement is fulfilled.SIST EN 12092:2002
EN 12092:2001 (E)66.2 Rotational viscometer method6.2.1PrincipleA spindle, usually in the shape of a cylinder or disc, rotates at a constant speed in the adhesive. The instrumentmeasures the torsional resistance of rotation. Factors, which depend on the speed of rotation and thecharacteristics of the spindle, are applied to the torsional resistance measurement resulting in an estimate of thecoefficient of viscosity.The method is often applied to non-Newtonian fluids and the viscosity measured depends on the rate of shear.A detailed description of the apparatus to be used and further details of this method are given in EN ISO 2555 andEN ISO 3219.6.2.2 Procedure6.2.2.1 Prepare the adhesive in accordance with the manuacturer’s instructions. Unless otherwise specified, take asample of the adhesive in accordance with EN 1066 and examine and prepare it in accordance with EN 1067.6.2.2.2 Set up, calibrate and operate the viscometer in accordance with the manufacturer’s instructions. Spindlesand speeds shall be chosen such that the instrument reading is in the range of 20% to 95% of the full scale value.6.2.2.3 Ensure that the temperature of the test specimen is within the prescribed limits. Unless otherwise specified,the temperature of the test specimen shall be maintained at (230,5)°C. Heat or cool the container holding the testspecimen by immersion in a thermostatically controlled bath. Special attachments are usually available for testinghot melt adhesives.6.2.2.4 Start the motor and leave the spindle turning in the adhesive until a steady value is recorded. In some fluidsthe reading of the instrument will not settle, but will continue to drift. In such cases, record the reading after aspecific time.6.2.2.5 Stop the motor, wait until the spindle has stopped, then restart the motor and take a second measurement.6.2.2.6 Repeat the process described in 6.2.2.5 until two consecutive readings differ by no more than 3%. Take theaverage of these two values.6.2.2.7 After each determination, remove the spindle from the appliance and wash it carefully in the appropriatesolvent.6.2.3 Expression of resultsCalculate the estimate of viscosity by the method prescribed by the manufacturer of the viscometer.Express the result to three significant figures in units of Pa·s or in mPa·s as appropriate.If required, plot the characteristic viscosity/shear rate curve for the adhesive.6.2.4 Test reportThe test report shall contain, at least, the following information:a) reference to this European Standard;b) identification of the product tested including details of any mixing or other preparations carried out;c) the test temperature;d) details of the viscometer, manufacturer and model, including the spindles and speeds used and the shear rate, ifknown;e) in cases where a measurement was taken after a specific time, the value of this time period;SIST EN 12092:2002
EN 12092:2001 (E)7f) the value(s) of the viscosity expressed as indicated in 6.2.3;g) proof of instrument calibration;h) the test date.6.3 Cone and plate viscometer method6.3.1 PrincipleThe adhesive under test is contained between the conical end of a rotating disc and a static plate. The viscosity ofthe adhesive is related to the torque required to maintain a given speed of rotation and the diameter and angle ofthe cone.A detailed description of the apparatus to be used and further details on this method are given in EN ISO 3219.6.3.2 Procedure6.3.2.1Prepare the adhesive in accordance with the manufacturers instr
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