Structural Adhesives - Determination of the pot life (working life) of multicomponent adhesives

This European Standard specifies means of determining in appropriate ways the variable property known
alternatively as useable working life and pot life.
This European Standard specifies five methods for the determination of the time available for use, each of
which is related to specific circumstances; particularly important being the rheology of the adhesive concerned
and its rate of reaction
This European Standard can also be used for assessing non-structural adhesives.
Because of the different properties of the individual multicomponent systems, like rheology or viscosity,
respectively velocity of hardening, etc. not all methods can be applied to each multicomponent system with
the same suitability.

Strukturklebstoffe - Bestimmung der Topfzeit (Verarbeitungszeit) von Mehrkomponentenklebstoffen

Diese Europäische Norm legt Möglichkeiten fest, in geeigneter Weise die veränderliche, alternativ als
Verarbeitbarkeitsdauer und Topfzeit bekannte Eigenschaft zu bestimmen.
Diese Europäische Norm legt fünf Verfahren zur Bestimmung der zur Anwendung verfügbaren Zeit fest, wobei
sich jedes auf besondere Umstände bezieht; besonders wichtig ist das Fließverhalten des betreffenden Klebstoffes
und dessen Reaktionsgeschwindigkeit.
Diese Europäische Norm kann auch zur Bestimmung nicht struktureller Klebstoffe verwendet werden.
Wegen der unterschiedlichen Eigenschaften unterschiedlicher Mehrkomponentensysteme wie Rheologie oder
Viskosität, Geschwindigke

Adhésifs structuraux - Détermination de la durée de vie en pot (délai d'utilisation) des adhésifs multicomposants

La présente Norme européenne permet de déterminer de diverses manières appropriées une propriété
variable appelée au choix « durée de vie en pot » ou « délai d’utilisation ».
La présente Norme européenne fixe cinq méthodes de détermination de la durée d’emploi possible, liées à
des circonstances spécifiques, deux paramètres étant particulièrement importants, à savoir la rhéologie de
l’adhésif considéré et sa vitesse de réaction.
La présente Norme européenne peut également être utilisée pour évaluer des adhésifs non structuraux.
Du fait de la différence de propriétés des différents systèmes multicomposants, telles que rhéologie ou
viscosité, vitesse de durcissement, etc., toutes les méthodes ne peuvent pas être employées pour tous les
systèmes multicomposants avec la même adéquation.

Konstrukcijska lepila - Ugotavljanje roka uporabnosti večkomponentnih lepil

Ta evropski standard določa sredstvo za ustrezne načine ugotavljanja spremenljive lastnosti, znane kot rok uporabnosti.
Ta evropski standard določa pet metod za ugotavljanje razpoložljivega časa za uporabo in vsaka od njih je povezana s specifičnimi okoliščinami, pri čemer je še zlasti pomembna reologija zadevnega lepila in njegova reakcijska hitrost.
Ta evropski standard se lahko uporablja tudi za ocenjevanje nekonstrukcijskih lepil.
Zaradi različnih lastnosti posameznih večkomponentnih sistemov, kot so reologija in viskoznost, hitrost strjevanja itd., ni mogoče uporabiti vseh metod pri vsakem večkomponentnem sistemu z enako primernostjo.

General Information

Status
Withdrawn
Publication Date
03-Oct-2011
Withdrawal Date
15-Apr-2018
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
16-Apr-2018
Due Date
09-May-2018
Completion Date
16-Apr-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Strukturklebstoffe - Bestimmung der Topfzeit (Verarbeitungszeit) von MehrkomponentenklebstoffenAdhésifs structuraux - Détermination de la durée de vie en pot (délai d'utilisation) des adhésifs multicomposantsStructural Adhesives - Determination of the pot life (working life) of multicomponent adhesives83.180LepilaAdhesivesICS:Ta slovenski standard je istoveten z:EN 14022:2010SIST EN 14022:2011en,fr,de01-november-2011SIST EN 14022:2011SLOVENSKI
STANDARDSIST EN 14022:20031DGRPHãþD



SIST EN 14022:2011



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14022
February 2010 ICS 83.180 Supersedes EN 14022:2003English Version
Structural Adhesives - Determination of the pot life (working life) of multi-component adhesives
Adhésifs structuraux - Détermination de la durée de vie en pot (délai d'utilisation) des adhésifs multicomposants
Strukturklebstoffe - Bestimmung der Topfzeit (Verarbeitungszeit) von Mehrkomponentenklebstoffen This European Standard was approved by CEN on 28 December 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14022:2010: ESIST EN 14022:2011



EN 14022:2010 (E) 2 Contents Page Foreword .31Scope .42Normative references .43Terms and definitions .44Typical purposes for the test methods .54.1Method 1: Determination by means of change in apparent viscosity (rotating viscometer or oscillating rheometer) .54.2Method 2: Determination by means of a change in extrusion rate .54.3Method 3: Determination by means of manual application .54.4Method 4: Determination by means of exothermic reaction temperature .54.5Method 5: Determination by means of a drying recorder .55Limits of the test methods .56Determination .56.1General .56.2Method 1: Determination by means of a change in apparent viscosity (rotating viscometer or oscillating rheometer) .66.2.1Principle .66.2.2Apparatus .66.2.3Procedure .66.3Method 2: Determination by means of a change in extrusion rate .76.3.1Principle .76.3.2Apparatus .76.3.3Procedure .76.4Method 3: Determination by means of manual application .86.4.1Principle .86.4.2Apparatus .86.4.3Procedure .86.5Method 4: Determination by means of exothermic reaction temperature .96.5.1Principle .96.5.2Apparatus .96.5.3Procedure .96.6Method 5: Determination by means of a drying recorder . 106.6.1Principle . 106.6.2Apparatus . 106.6.3Procedure . 107Expression of results . 118Test report . 11 SIST EN 14022:2011



EN 14022:2010 (E) 3 Foreword This document (EN 14022:2010) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2010, and conflicting national standards shall be withdrawn at the latest by August 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14022:2003. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 14022:2011



EN 14022:2010 (E) 4 1 Scope This European Standard specifies means of determining in appropriate ways the variable property known alternatively as useable working life and pot life. This European Standard specifies five methods for the determination of the time available for use, each of which is related to specific circumstances; particularly important being the rheology of the adhesive concerned and its rate of reaction. This European Standard can also be used for assessing non-structural adhesives. NOTE EN 302-7 could also be used for the determination of working life of adhesives for load-bearing timber structures. Because of the different properties of the individual multi-component systems, like rheology or viscosity, respectively velocity of hardening, etc., not all methods can be applied to each multi-component system with the same suitability. SAFETY STATEMENT— Persons using this document should be familiar with the normal laboratory practice, if applicable. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. ENVIRONMENTAL STATEMENT — It is understood that some of the material permitted in this standard may have negative environmental impact. As technological advantages lead to acceptable alternatives for these materials, they will be eliminated from this standard to the extent possible. At the end of the test, the user of the standard should take care to carry out an appropriate disposal of the wastes, according to local regulation. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 923:2005, Adhesives
Terms and definitions EN 1067, Adhesives
Examination and preparation of samples for testing EN 12092:2001, Adhesives
Determination of viscosity EN ISO 15605, Adhesives
Sampling (ISO 15605:2000) 3 Terms and definitions For the purposes of this document, the terms and the definitions given in EN 923:2005 and the following apply. 3.1 pot life
working life period of time during which a multi-component adhesive can be used after its component parts have been mixed SIST EN 14022:2011



EN 14022:2010 (E) 5 NOTE 1 The pot life of any reacting adhesives is affected by the rate at which the heat energy generated by the reaction is dissipated. The rate of dissipation depends significantly upon the volume and temperature of the mixed adhesive and the ambient temperature. The term "pot life" is also used to describe the period during which hot-melt adhesives remain fit for use when kept at their normal operating temperatures. NOTE 2 While in some of the measuring methods described in this standard the pot life is measured as the period of time which starts when the mixing ends, in some other methods described in this standard, the pot life is measured as the period of time which starts when the mixing starts. 4 Typical purposes for the test methods 4.1 Method 1: Determination by means of change in apparent viscosity (rotating viscometer or oscillating rheometer) This test method provides a means of measuring a pot life greater than 5 min; where pot life is quantified by means of a specified increase in the viscosity of the reacting adhesive. 4.2 Method 2: Determination by means of a change in extrusion rate This test method provides a means of measuring a pot life (for paste-like adhesives) greater than 5 min; where pot life is quantified by means of a specified decrease in the weight of reacting adhesives extruded, in unit time, under standard conditions. 4.3 Method 3: Determination by means of manual application This generally applicable method provides a means of measuring a pot life of any duration; where pot life is quantified as the time by which a reacting adhesive can no longer be spread by hand. 4.4 Method 4: Determination by means of exothermic reaction temperature This test method provides a means of measuring a pot life which can be used for any reactive multi-component system; where pot life is quantified as the time by which a batch of the reaction product reaches a defined temperature, the so-called critical temperature (e.g. 40 °C). For products producing less than 40 °C exothermic reaction heat in the defined batch, the maximum temperature is taken as criteria. 4.5 Method 5: Determination by means of a drying recorder This test method provides a means of measuring the pot life, for two component adhesives and specially for one component adhesives which easily react with air humidity (e.g. PUR prepolymers). 5 Limits of the test methods While the described test methods are suitable for assessing multi-component epoxide or polyurethane-based adhesives, they are not suitable for some acrylic based-adhesives. 6 Determination 6.1 General The adhesive to be tested, by any one the five given test methods, shall be sampled, prepared and examined according to EN ISO 15605 and EN 1067. For any method chosen, at least three samples shall be evaluated and the mean determined.
SIST EN 14022:2011



EN 14022:2010 (E) 6 6.2 Method 1: Determination by means of a change in apparent viscosity (rotating viscometer or oscillating rheometer) 6.2.1 Principle A multi-component adhesive is mixed and its pot life established by measuring the time taken for its viscosity to change by a specified amount. This method is not suitable for the determination of pot lives that are shorter than 5 min in duration. 6.2.2 Apparatus 6.2.2.1 Balance, capable of weighing up to (500 ± 0,2) g. 6.2.2.2 Beaker, squat form, capacity 400 ml, made of an unreactive material with adhesive, whose wall thickness does not exceed 1 mm. 6.2.2.3 Spatula made of a non-reactive material with adhesive and with an angular, not circular end. 6.2.2.4 Viscometer, any suitable means of measuring the viscosity of the adhesive (rotating viscometer or oscillating rheometer) may be selected. See EN 12092:2001, Method 1, for the viscosity measurement with rotating viscometer. 6.2.2.5 Stopwatch, accurate to ± 1 s. 6.2.2.6 Test enclosure
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