1、August 2016 English price group 11No 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 87.040!%Y.8“2541121www.din.deDIN
2、EN ISO 4624Paints and varnishes Pull-off test for adhesion (ISO 4624:2016);English version EN ISO 4624:2016,English translation of DIN EN ISO 4624:2016-08Beschichtungsstoffe Abreiversuch zur Bestimmung der Haftfestigkeit (ISO 4624:2016);Englische Fassung EN ISO 4624:2016,Englische bersetzung von DIN
3、 EN ISO 4624:2016-08Peintures et vernis Essai de traction (ISO 4624:2016);Version anglaise EN ISO 4624:2016,Traduction anglaise de DIN EN ISO 4624:2016-08SupersedesDIN EN ISO 4624:2003-08www.beuth.deDocument comprises 19 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language o
4、riginal shall be considered authoritative.07.16 DIN EN ISO 4624:2016-08 2 A comma is used as the decimal marker. National foreword This document (EN ISO 4624:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test methods for paints and varnis
5、hes” (Secretariat: BSI, United Kingdom) in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Beschichtungsstoffe und Beschichtungen (DIN Standards Committee Coatings an
6、d Coating Materials), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1513 DIN EN ISO 1513 ISO 1514 DIN EN ISO 1514 ISO 2409 DIN EN ISO
7、 2409 ISO 2808 DIN EN ISO 2808 ISO 3270 DIN EN 23270 ISO 15528 DIN EN ISO 15528 Amendments This standard differs from DIN EN ISO 4624:2003-08 as follows: a) detailed information on how to avoid distortion of the substrate during the tensile test has been added; b) the three methods using one dolly o
8、r two dollies on a painted panel and two dollies, one as painted substrate, have been named methods A, B and C; c) the supplementary test conditions previously in Annex A have been integrated in the test report. Previous editions DIN 53232: 1973-04 DIN ISO 4624: 1980-06 DIN EN 24624: 1992-09 DIN EN
9、ISO 4624: 2003-08 DIN EN ISO 4624:2016-08 3 National Annex NA (informative) Bibliography DIN EN 23270, Paints, varnishes and their raw materials Temperatures and humidities for conditioning and testing DIN EN ISO 1513, Paints and varnishes Examination and preparation of test samples DIN EN ISO 1514,
10、 Paints and varnishes Standard panels for testing DIN EN ISO 2409, Paints and varnishes Cross-cut test DIN EN ISO 2808, Paints and varnishes Determination of film thickness DIN EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling DIN EN ISO 4624:2016-08 4 This page is
11、intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4624 April 2016 ICS 87.040 Supersedes EN ISO 4624:2003English Version Paints and varnishes - Pull-off test for adhesion(ISO 4624:2016) Peintures et vernis - Essai de traction (ISO 4624:2016) Beschichtungsstoffe - Abreiversu
12、ch zur Bestimmung der Haftfestigkeit (ISO 4624:2016) This European Standard was approved by CEN on 20 February 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 national standard without an
13、y 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 version in any other langua
14、ge 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, Czech Republic, Denmark,
15、 Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR
16、 STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4624:2016 EEuropean foreword .
17、3Introduction 51 Scope . 62 Normative references 63 Principle 64 Apparatus . 75 Adhesives 96 Sampling 97 Test panels . 107.1 Substrate . 107.2 Preparation and coating . 107.3 Drying and conditioning 107.4 Thickness of coating 108 Procedure 108.1 Number of determinations 108.2 Ambient conditions 108.
18、3 Adhesive . 108.4 Test assemblies 108.4.1 Method A: General method (using two dollies) for testing both rigid and deformable substrates . 108.4.2 Method B: Method for testing from one side only, using a single dolly (suitable for rigid substrates only) . 118.4.3 Method C: Method using dollies, one
19、as a painted substrate 128.5 Measurement . 128.5.1 Breaking strength. 128.5.2 Nature of the fracture . 139 Calculation and expression of results 139.1 Breaking strength 139.2 Nature of failure 149.3 Example 1410 Precision 1411 Test report 14Bibliography .15Contents PageDIN EN ISO 4624:2016-08 EN ISO
20、 4624:2016 (E)2Foreword .4European foreword This document (EN ISO 4624:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. This European Standard shall be
21、given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn to the possibility that some of the elements of this document
22、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 ISO 4624:2003. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound
23、 to implement this European Standard: Austria, 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,
24、 Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 4624:2016 has been approved by CEN as EN ISO 4624:2016 without any modification. DIN EN ISO 4624:2016-08 EN ISO 4624:2016 (E)3 ForewordISO (the International Organization for S
25、tandardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the ri
26、ght to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedure
27、s used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial ru
28、les of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights ident
29、ified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation
30、on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is
31、ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes.This third edition cancels and replaces the second edition (ISO 4624:2002), which has been technically revised with the following changes:a) detailed information on how to avoid distortion of the substr
32、ate during the tensile test has been added;b) the three methods using one dolly or two dollies on a painted panel and two dollies, one as painted substrate, have been named methods A, B and C;c) the supplementary test conditions previously in Annex A have been integrated in the test report.DIN EN IS
33、O 4624:2016-08 EN ISO 4624:2016 (E)4 IntroductionThis International Standard is one of two standards which describe methods for assessing the adhesion of a single coating or a multi-coat system of paint, varnish or related product by measuring the minimum tensile stress necessary to detach or to rup
34、ture the coating in a direction perpendicular to the substrate.The test result is influenced not only by the mechanical properties of the system under test, but also by the nature and preparation of the substrate, the method of paint application, the drying conditions of the coating, the temperature
35、, the humidity and other factors like the type of test instrument which has been used.One other International Standard for the evaluation of adhesion characteristics is ISO 2409.DIN EN ISO 4624:2016-08 EN ISO 4624:2016 (E)5 1 ScopeThis International Standard specifies three methods (i.e. one dolly o
36、r two dollies on a painted panel and two dollies, one as painted substrate) for determining the adhesion by carrying out a pull-off test on a single coating or a multi-coat system of paint, varnish or related product.These test methods have been found useful in comparing the adhesion behaviour of di
37、fferent coatings. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in adhesion.The test may be applied using a wide range of substrates. Different procedures are given according to whether the substrate is deformable, for example thin m
38、etal, plastics and wood, or rigid, for example thick concrete and metal plates. To avoid distortion of the substrate during the tensile test, it is common to use a sandwich construction. For example, for special purposes, the coating may be applied directly to the face of a test dolly.2 Normative re
39、ferencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
40、ISO 1513, Paints and varnishes Examination and preparation of test samplesISO 1514, Paints and varnishes Standard panels for testingISO 2808, Paints and varnishes Determination of film thicknessISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and te
41、stingISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling3 PrincipleThe product or system under test is applied at uniform thickness to flat panels of uniform surface texture.After drying/curing the coating system, dollies are bonded directly to the surface of the coated,
42、 cured panel using an adhesive.After curing of the adhesive, the bonded dolly assemblies are placed in a suitable tensile tester. The bonded assemblies are subjected to a controlled tensile test (pull-off test), and the force required to break the coating/substrate bond is measured.To avoid possible
43、 distortion of the substrate during the tensile test, dollies with a diameter smaller than the 2 cm diameter used for steel substrates may be used to reduce the force introduced.The test result is the tensile stress necessary to break the weakest interface (adhesive failure) or the weakest component
44、 (cohesive failure) of the test assembly. Mixed adhesive/cohesive failures may also occur.DIN EN ISO 4624:2016-08 EN ISO 4624:2016 (E)6 4 Apparatus4.1 Tensile tester, suitable for carrying out the chosen procedure specified in Clause 8. The tensile stress shall be applied in a direction perpendicula
45、r to the plane of the coated substrate and shall be increased at a substantially uniform rate, not greater than 1 MPa/s1)such that failure of the test assembly occurs within 90 s. Suitable designs for applying the tensile stress are shown in Figures 1 and 2.Instead of a tensile tester, other types o
46、f pull-off adhesion testers (mechanically, pneumatically, hydraulically or hand-driven) may be used provided that they give similar results. The type of instrument shall be reported in the test report, because hand-driven/mechanical/hydraulic instruments are reported to produce widely different resu
47、lts.NOTE The results can be influenced by the test assembly used. Furthermore, the results are not reproducible unless coaxial alignment of the tensile forces is ensured.13245Key1 support2 ball joint3 dollies4 coating5 substrateFigure 1 Example of a suitable test apparatus for the two-dolly methods
48、described in 8.4.1 and 8.4.3 (methods A and C)1) 1 MPa/s = 1 MN/(m2s).DIN EN ISO 4624:2016-08 EN ISO 4624:2016 (E)7 123465Key1 coating2 test piece3 dolly4 ball-and-socket sliding joint5 support (suitably designed to allow for joint assembly)6 ball-and-socket sliding jointFigure 2 Example of a suitable test apparatus for the one-dolly method described in 8.4.2 (method B)4
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