EN ISO 4624:2023
(Main)Paints and varnishes - Pull-off test for adhesion (ISO 4624:2023)
Paints and varnishes - Pull-off test for adhesion (ISO 4624:2023)
This document specifies three methods 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 methods include:
— method A: using two dollies, suitable for testing both rigid and deformable substrates;
— method B: testing from one side only, using a single dolly, suitable for rigid substrates only;
— method C: using dollies, one as a painted substrate.
These test methods have been found useful in comparing the adhesion behaviour of different coatings. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in adhesion.
The test can be applied using a wide range of substrates. Different procedures are given according to whether the substrate is deformable, e.g. thin metal, plastics and wood, or rigid, e.g. 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 can be applied directly to the face of a test dolly.
Beschichtungsstoffe - Abreißversuch zur Bestimmung der Haftfestigkeit (ISO 4624:2023)
Dieses Dokument legt drei Verfahren zum Bestimmen der Haftfestigkeit fest. Nach diesen Verfahren wird ein Abreißversuch an einer ein- oder mehrschichtigen Beschichtung durchgeführt.
Zu diesen Verfahren gehören:
—
VerfahrenA: Verwendung von zwei Prüfstempeln zum Prüfen sowohl auf starren als auch auf verformbaren Substraten;
—
VerfahrenB: Prüfen von nur einer Seite, mit einem Prüfstempel, das nur für starre Platten geeignet ist;
—
VerfahrenC: Verwendung von Prüfstempeln, von denen einer mit dem zu prüfenden Beschichtungsstoff beschichtet ist.
Diese Prüfverfahren wurden als nützlich befunden, um das Verhalten unterschiedlicher Beschichtungen hinsichtlich ihrer Haftfestigkeit zu vergleichen. Sie sind besonders nützlich, indem sie relative Bewertungen einer Reihe von beschichteten Probenplatten ermöglichen, die deutliche Unterschiede in der Haftfestigkeit der Beschichtungen zeigen.
Die Prüfung kann auf zahlreichen Substraten durchgeführt werden. Es wird unterschiedlich verfahren, je nach
dem, ob es sich um ein verformbares Substrat, z.B. dünnes Metall, Kunststoff und Holz, oder um ein starres
strat, z.B. dicke Beton- und Metallplatten, handelt. Um während der Haftfestigkeitsprüfung ein Verbiegen des Substrates zu verhindern, wird üblicherweise der Sandwich-Aufbau angewendet. Für spezielle Zwecke kann der Beschichtungsstoff z.B. auf einen Prüfstempel aufgetragen werden.
Peintures et vernis - Essai de traction (ISO 4624:2023)
Le présent document spécifie trois méthodes pour déterminer l'adhérence par un essai de traction sur une couche unique ou sur un système multicouche de peintures, vernis ou produits assimilés.
Ces méthodes incluent:
— méthode A: utilisant deux plots et convenant aux essais pour les subjectiles rigides et les subjectiles déformables;
— méthode B: essai sur une seule face, utilisant un plot, convenant uniquement aux subjectiles rigides;
— méthode C: utilisant des plots, l'un étant utilisé comme subjectile peint.
Ces méthodes d'essai se sont révélées utiles pour comparer l'adhérence de diverses couches. Elles sont surtout utiles pour fournir des classifications relatives pour une série de panneaux revêtus présentant des différences d'adhérence significatives.
L'essai peut être effectué sur une large variété de subjectiles. Différents modes opératoires sont présentés selon que le subjectile est déformable, par exemple du métal fin, plastiques et bois, ou rigide, par exemple plaques de béton ou de métal épais. Pour éviter la déformation du subjectile durant l'essai de traction, il est courant d’utiliser un assemblage en sandwich. Par exemple, pour des besoins particuliers, le revêtement peut être appliqué directement sur un plot d'essai.
Barve in laki - Preskušanje oprijema z odtrganjem filma (ISO 4624:2023)
Standard ISO 4624:2016 določa tri metode (tj. en podpornik ali dva podpornika na barvani plošči in dva podpornika, pri čemer je eden barvana podlaga) za ugotavljanje oprijema z izvajanjem preskusa z odtrganjem filma na enopokrivnem ali večpokrivnem sistemu barve, laka ali sorodnega izdelka.
Te preskusne metode so se izkazale za uporabne pri primerjavi oprijema različnih premazov. Ta standard je predvsem uporaben za zagotavljanje relativnih vrednosti za serije premazanih plošč, ki se precej razlikujejo v oprijemu.
Preskus se lahko uporablja s številnimi podlagami. Podani so različni postopki glede na to, ali je podlaga upogljiva, npr. tanka kovina, polimeri in les, ali toga, npr. debel beton in kovinske plošče. Da med nateznim preskusom ne pride do popačenja podlage, se pogosto uporablja konstrukcija »sendvič«. Za posebne namene se lahko premaz na primer nanese neposredno na sprednjo stran podpornika.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2023
Nadomešča:
SIST EN ISO 4624:2016
Barve in laki - Preskušanje oprijema z odtrganjem filma (ISO 4624:2023)
Paints and varnishes - Pull-off test for adhesion (ISO 4624:2023)
Beschichtungsstoffe - Abreißversuch zur Bestimmung der Haftfestigkeit (ISO 4624:2023)
Peintures et vernis - Essai de traction (ISO 4624:2023)
Ta slovenski standard je istoveten z: EN ISO 4624:2023
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 4624
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2023
EUROPÄISCHE NORM
ICS 87.040 Supersedes EN ISO 4624:2016
English Version
Paints and varnishes - Pull-off test for adhesion (ISO
4624:2023)
Peintures et vernis - Essai de traction (ISO 4624:2023) Beschichtungsstoffe - Abreißversuch zur Bestimmung
der Haftfestigkeit (ISO 4624:2023)
This European Standard was approved by CEN on 27 May 2023.
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-CENELEC 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-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, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4624:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 4624:2023) 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 given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by December 2023, and conflicting national standards
shall be withdrawn at the latest by December 2023.
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 document supersedes EN ISO 4624:2016.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 4624:2023 has been approved by CEN as EN ISO 4624:2023 without any modification.
INTERNATIONAL ISO
STANDARD 4624
Fourth edition
2023-06
Paints and varnishes — Pull-off test
for adhesion
Peintures et vernis — Essai de traction
Reference number
ISO 4624:2023(E)
ISO 4624:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii
ISO 4624:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Adhesives . 5
7 Sampling . 6
8 Test panels .6
8.1 Substrate . 6
8.2 Preparation and coating . 6
8.3 Drying and conditioning . 6
8.4 Thickness of coating . 6
9 Procedure .6
9.1 Number of determinations . 6
9.2 Ambient conditions. 6
9.3 Adhesive . 6
9.4 Test assemblies . 7
9.4.1 Method A: General method (using two dollies) for testing both rigid and
deformable substrates . 7
9.4.2 Method B: Method for testing from one side only, using a single dolly
(suitable for rigid substrates only) . 7
9.4.3 Method C: Method using dollies, one as a painted substrate . 8
9.5 Measurement . 9
9.5.1 Breaking strength . 9
9.5.2 Nature of the fracture . 9
10 Calculation and expression of results . 9
10.1 Breaking strength . 9
10.2 Nature of failure . 10
10.3 Example . 10
11 Precision .10
12 Test report .10
Bibliography .12
iii
ISO 4624:2023(E)
Foreword
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This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee
SC 9, General test methods for paints and va
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