DIN EN 15416-4-2017 Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test methods - Part 4 Determination of open assembly time under referenced c.pdf

1、May 2017 English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 83.180!%eBc“2663164www.din.deDIN EN 1

2、5416-4Adhesives for load bearing timber structures other than phenolic and aminoplastic Test methods Part 4: Determination of open assembly time under referenced conditions;English version EN 154164:2017,English translation of DIN EN 15416-4:2017-05Klebstoffe fr tragende Holzbauteile ausgenommen Phe

3、nolharzklebstoffe und Aminoplaste Prfverfahren Teil 4: Bestimmung der offenen Wartezeit bei Referenzbedingungen;Englische Fassung EN 154164:2017,Englische bersetzung von DIN EN 15416-4:2017-05Adhsifs pour structures portantes en bois de type autre que phnolique et aminoplaste Methodes dessais Partie

4、 4: Dtermination du temps dassemblage ouvert dans des conditions de rfrence;Version anglaise EN 154164:2017,Traduction anglaise de DIN EN 15416-4:2017-05SupersedesDIN EN 154164:200610www.beuth.deDocument comprises 11 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language origi

5、nal shall be considered authoritative.05.17 DIN EN 15416-4:2017-05 2 A comma is used as the decimal marker. National foreword This document (EN 15416-4:2017) has been prepared by Technical Committee CEN/TC 193 “Adhesives” (Secretariat: UNE, Spain). The responsible German body involved in its prepara

6、tion was DIN-Normenausschuss Holzwirtschaft und Mbel (DIN Standards Committee Timber and Furniture), Working Committee NA 042-04-05 AA “Mirror committee for CEN/TC 193/SC 1 wood adhesives”. The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 6

7、344-2 DIN ISO 6344-2 Amendments This standard differs from DIN EN 15416-4:2006-10 as follows: a) the title of the standard has been modified; b) 7.2 covering failure mode has been included; c) in 3.1, a new definition of open assembly time has been supplemented; d) in Table 1, time intervals for ope

8、n assembly times have been divided into slow and fast systems; e) Clause 8 “Requirement” has been included. Previous editions DIN EN 15416-4: 2006-10 National Annex NA (informative) Bibliography DIN ISO 6344-2, Coated abrasives Grain size analysis Part 2: Determination of grain size distribution of

9、macrogrits P 12 to P 220 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15416-4 January 2017 ICS 83.180 Supersedes EN 15416-4:2006English Version Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test methods - Part 4: Determination of open assembly time under

10、 referenced conditions Adhsifs pour structures portantes en bois de type autre que phnolique et aminoplaste - Mthodes d essais - Partie 4: Dtermination du temps d assemblage ouvert dans des conditions de rfrenceKlebstoffe fr tragende Holzbauteile ausgenommen Phenolharzklebstoffe undAminoplaste - Prf

11、verfahren Teil 4: Bestimmung der offenen Wartezeit bei Referenzbedingungen This European Standard was approved by CEN on 30 October 2016. 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 nationa

12、l standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A versio

13、n in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Cze

14、ch Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Ki

15、ngdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15416

16、-4:2017 E-2 Contents Page European foreword . 3 Introduction 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 6 4 Principle . 6 5 Apparatus . 6 6 Procedure. 7 6.1 General 7 6.2 Preparation of bonded assemblies . 7 6.3 Preparation of samples for testing . 8 6.4 Test procedure . 8 7 Expr

17、ession of results 8 7.1 Tensile shear strength . 8 7.2 Failure mode . 8 8 Requirement . 8 9 Test report . 8 9.1 General information . 8 9.2 Information about the adhesive 9 9.3 Preparation of test pieces and testing procedure . 9 9.4 Test results 9 EN 15416-4:2017 (E) DIN EN 15416-4:2017-05 3 Europe

18、an foreword This document (EN 15416-4:2017) 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

19、 by July 2017, and conflicting national standards shall be withdrawn at the latest by July 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This

20、 document supersedes EN 15416-4:2006. Compared to EN 15416-4:2006, the following main modifications have been made: a) title has been changed; b) 7.2 covering failure mode has been introduced; c) new definition of open assembly time has been given in 3.1; d) time intervals for open assembly times in

21、 Table 1 divided into slow and fast systems; e) requirement has been added as Clause 8. This document is one of a series dealing with adhesives for use with timber structures, and is published in support of product standards for bonded load-bearing timber structures. The series consists of three cla

22、ssification and performance requirements for adhesives for load-bearing timber structures, phenolic and aminoplastic adhesives (EN 301), one component polyurethane adhesives (EN 15425) and emulsion polymerized isocyanate adhesives (EN 16254), together with 12 test methods (EN 302 Parts 1 to 8 and EN

23、 15416 Parts 1 and 3 to 5). These European Standards have the following titles: EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures Classification and performance requirements EN 15425, Adhesives One component polyurethane (PUR) for load-bearing timber structures Classif

24、ication and performance requirements EN 16254, Adhesives Emulsion polymerized isocyanate (EPI) for load-bearing timber structures Classification and performance requirements EN 302-1, Adhesives for load-bearing timber structures Test methods Part 1: Determination of longitudinal tensile shear streng

25、th EN 302-2, Adhesives for load-bearing timber structures Test methods Part 2: Determination of resistance to delamination EN 302-3, Adhesives for load-bearing timber structures Test methods Part 3: Determination of the effect of acid damage to wood fibres by temperature and humidity cycling on the

26、transverse tensile strength EN 15416-4:2017 (E) DIN EN 15416-4:2017-05 4 EN 302-4, Adhesives for load-bearing timber structures Test methods Part 4: Determination of the effects of wood shrinkage on the shear strength EN 302-5, Adhesives for load-bearing timber structures Test methods Part 5: Determ

27、ination of maximum assembly time under referenced conditions EN 302-6, Adhesives for load-bearing timber structures Test methods Part 6: Determination of the minimum pressing time under referenced conditions EN 302-7, Adhesives for load-bearing timber structures Test methods - Part 7: Determination

28、of the working life under referenced conditions EN 302-8, Adhesives for load-bearing timber structures Test methods Part 8: Static load test of multiple bond line specimens in compression shear EN 15416-1, Adhesives for load bearing timber structures other than phenolic and aminoplastic Test methods

29、 Part 1: Long-term tension load test perpendicular to the bond line at varying climate conditions with specimens perpendicular to the glue line (Glass house test) EN 15416-3, Adhesives for load bearing timber structures other than phenolic and aminoplastic Test methods Part 3: Creep deformation test

30、 at cyclic climate conditions with specimens loaded in bending shear EN 15416-4, Adhesives for load bearing timber structures other than phenolic and aminoplastic Test methods Part 4: Determination of open assembly time under referenced conditions EN 15416-5, Adhesives for load bearing timber struct

31、ures other than phenolic and aminoplastic Test methods Part 5: Determination of minimum pressing time under referenced conditions According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria,

32、 Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, S

33、weden, Switzerland, Turkey and the United Kingdom. EN 15416-4:2017 (E) DIN EN 15416-4:2017-05 5 Introduction Safety statement Persons using this European Standard should be familiar with the normal laboratory practice, if applicable. This European Standard cannot address all of the safety problems,

34、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 European Standard may have negative

35、 environmental impact. As technological advantages lead to better alternatives for these materials, they will be eliminated from this European Standard to the extent possible. At the end of the test, it is recommended that the user of this European Standard take care to carry out an appropriate disp

36、osal of the wastes, according to local regulation. EN 15416-4:2017 (E) DIN EN 15416-4:2017-05 6 1 Scope This European Standard specifies a laboratory method of determining the open assembly time in standard climate (20 2) C and (65 5) % relative humidity (hereafter climate 20/65). This European Stan

37、dard is intended to determine the open assembly time using a defined procedure for obtaining a reliable base for comparison of open assembly time between adhesives under referenced conditions. The method gives a result that cannot be applied to the safe manufacture of timber structures without takin

38、g into account the influence of factors such as timber density, moisture content, factory temperature and relative air humidity. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated refer

39、ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 302-1:2013, Adhesives for load-bearing timber structures Test methods Part 1: Determination of longitudinal tensile shear strength EN 923:2015, Adhesive

40、s Terms and definitions ISO 5893, Rubber and plastics test equipment Tensile, flexural and compression types (constant rate of traverse) Specification ISO 6344-2, Coated abrasives Grain size analysis Part 2: Determination of grain size distribution of macrogrits P12 to P220 3 Terms and definitions F

41、or the purposes of this document, the terms and definitions given in EN 923:2015 and the following apply. 3.1 open assembly time time interval under specified conditions from adhesive spread until the surfaces to be bonded are joined 4 Principle Standard beech lap joints are tested in tensile shear

42、after various open assembly times until it is found that the shear strength value is below 10 N/mm2, the coefficient of variation increases considerably or the failure mode changes considerably. 5 Apparatus The testing machine shall be a) either capable of maintaining a constant rate of loading of (

43、2,0 0,5) kN/min, b) or capable of maintaining constant crosshead speed as described in ISO 5893. EN 15416-4:2017 (E) DIN EN 15416-4:2017-05 7 The jaws of the testing machine shall grip the test pieces firmly and prevent slippage during loading. The grip shall be fixed in hinged manner. 6 Procedure 6

44、.1 General Sufficient beech panels shall be prepared to enable manufacturing of 6 sets each of at least 10 test specimens with close contact glue lines as specified in EN 302-1:2013, Clause 7. 6.2 Preparation of bonded assemblies After conditioning to (12 1) % moisture content in climate 20/65, the

45、panels shall be divided into 6 equal groups of samples, one for each of the 6 test series given in Table 1. Table 1 Example of time intervals for open assembly times at 20 C and 65 % RH Test series (nr) 1 2 3 4 5 6 Open assembly time for slow systems (min) 40 50 60 70 80 90 Open assembly time for fa

46、st systems (min) 1 2 3 4 5 6 EXAMPLE If the expected open assembly time is 70 min, use the time intervals for slow systems. If the expected open assembly time is 4 min, use the time intervals for fast systems. If the expected open assembly time does not fit the examples given in Table 1, adjust the

47、intervals in a similar manner and according to the adhesive manufacturer recommendation. The adjustment shall be such that at least a total of 6 test series covering the time range below and over the expected open assembly time is tested. Not more than 24 h before bonding either lightly plane or lig

48、htly sand each surface (using an abrasive paper of grain size P100 as defined in ISO 6344-2) to be bonded. Remove any dust carefully. Do not touch or soil the prepared surfaces. An adhesive spread of 200 g/m2on one side only shall be used unless another amount is requested by the manufacturer. Compl

49、y with the adhesive manufacturers instructions regarding the processing conditions, including the preparation and application of the adhesive and report them in the test report. After adhesive application, the boards are open assembled with the chosen times in climate (20 1) C and (65 5) % relative humidity before bonded together. A strict climate con