EN ISO 6272-1:2011
(Main)Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 1: Falling-weight test, large-area indenter (ISO 6272-1:2011)
Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 1: Falling-weight test, large-area indenter (ISO 6272-1:2011)
ISO 6272-1:2011 describes a method for evaluating the resistance of a dry film of paint, varnish or related product to cracking or peeling from a substrate when it is subjected to a deformation caused by a falling weight, with a 20-mm-diameter spherical indenter, dropped under standard conditions.
NOTE The terms "impact" and "impact resistance" are used in the title and text of ISO 6272-1, but an important characteristic of the apparatus used is that it should produce rapid deformation rather than a true impact.
The method described can be applied
either as a pass/fail test, the test being carried out from one drop height and with a specified mass, so as to test compliance with a particular specification;
or as a classification test, to determine, by gradually increasing the drop height and/or the mass, the minimum mass and/or drop height for which the coating cracks or peels from its substrate.
Beschichtungsstoffe - Prüfung der Widerstandsfähigkeit bei schlagartiger Verformung (Schlagfestigkeit) - Teil 1: Prüfung durch fallendes Gewichtsstück, große Prüffläche (ISO 6272-1:2011)
Dieser Teil von ISO 6272 legt ein Prüfverfahren zum Bewerten des Widerstandes einer Beschichtung aus
einem Beschichtungsstoff gegen Rissbildung oder Ablösen von einem Substrat fest, wenn die Beschichtung
unter Normbedingungen durch einen fallenden Körper mit 20 mm Durchmesser verformt wird.
ANMERKUNG Die Ausdrücke "Schlag" und "Schlagfestigkeit" wurden zwar in den Titel und Text dieses Teiles von
ISO 6272 aufgenommen, aber eines der bestimmenden Merkmale des verwendeten Gerätes ist, dass es eine schnelle
Verformung als Folge der Schlageinwirkung hervorruft, aber keinen "Schlag".
Das hier beschriebene Prüfverfahren kann angewendet werden
- entweder als Ja/Nein-Prüfung mit einer festgelegten Fallhöhe und Masse, um die Übereinstimmung mit
einer bestimmten Spezifikation zu prüfen; oder
- durch stufenweises Erhöhen der Masse und/oder Fallhöhe als Einstufungstest zum Bestimmen der
Mindestmasse und/oder Mindestfallhöhe, bei der die Beschichtung zu reißen oder sich abzulösen
beginnt.
Peintures et vernis - Essais de déformation rapide (résistance au choc) - Partie 1: Essai de chute d'une masse avec pénétrateur de surface importante (ISO 6272-1:2011)
L'ISO 6272-1:2011 décrit une méthode permettant d'évaluer la résistance d'un feuil sec de peinture, vernis ou produit assimilé au craquelage ou au décollement de son subjectile lorsqu'il est soumis à une déformation provoquée par la chute d'une masse comportant un pénétrateur sphérique de 20 mm de diamètre, lâchée dans des conditions normalisées.
La méthode est applicable
soit en essai tout ou rien, l'essai étant réalisé avec une hauteur de chute et une masse données afin de vérifier la conformité à une spécification particulière,
soit en essai de classement, l'essai étant réalisé en augmentant progressivement la hauteur de chute et/ou la masse, afin de déterminer la masse et/ou la hauteur de chute minimales pour lesquelles le revêtement se craquelle ou se décolle de son subjectile.
Barve in laki - Preskusi na podlagi hitre deformacije (odpornost proti udarcu) - 1. del: Metoda s padajočo utežjo, velika površina vtiska (ISO 6272-1:2011)
Ta del ISO 6272 opisuje metodo za vrednotenje odpornosti suhega filma barve, laka ali sorodnega izdelka proti pokanju ali luščenju s substrata, ko je izpostavljen deformaciji, ki jo povzroči padajoča utež z 20-mm kroglastim vtiskom, spuščena v standardnih pogojih.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Beschichtungsstoffe - Prüfung der Widerstandsfähigkeit bei schlagartiger Verformung (Schlagprüfung) - Teil 1: Prüfung durch fallendes Gewischtsstück, große Prüffläche (ISO 6272-1:2011)Peintures et vernis - Essais de déformation rapide (résistance au choc) - Partie 1: Essai de chute d'une masse avec pénétrateur de surface importante (ISO 6272-1:2011)Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 1: Falling-weight test, large-area indenter (ISO 6272-1:2011)87.040Barve in lakiPaints and varnishesICS:Ta slovenski standard je istoveten z:EN ISO 6272-1:2011SIST EN ISO 6272-1:2011en,fr01-oktober-2011SIST EN ISO 6272-1:2011SLOVENSKI
STANDARDSIST EN ISO 6272-1:20041DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 6272-1
August 2011 ICS 87.040 Supersedes EN ISO 6272-1:2004English Version
Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 1: Falling-weight test, large-area indenter (ISO 6272-1:2011)
Peintures et vernis - Essais de déformation rapide (résistance au choc) - Partie 1: Essai de chute d'une masseavec pénétrateur de surface importante (ISO 6272-1:2011) Beschichtungsstoffe - Prüfung der Widerstandsfähigkeit bei schlagartiger Verformung (Schlagfestigkeit) - Teil 1: Prüfung durch fallendes Gewichtsstück, große Prüffläche (ISO 6272-1:2011) This European Standard was approved by CEN on 22 July 2011.
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, 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 © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6272-1:2011: ESIST EN ISO 6272-1:2011
Reference numberISO 6272-1:2011(E)© ISO 2011
INTERNATIONAL STANDARD ISO6272-1Second edition2011-08-15Paints and varnishes — Rapid-deformation (impact resistance) tests — Part 1: Falling-weight test, large-area indenter Peintures et vernis — Essais de déformation rapide (résistance au choc) — Partie 1: Essai de chute d'une masse avec pénétrateur de surface importante
ISO 6272-1:2011(E)
©
ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 • CH-1211 Geneva 20 Tel.
+ 41 22 749 01 11 Fax
+ 41 22 749 09 47 E-mail
copyright@iso.org Web
www.iso.org Published in Switzerland
ii © ISO 2011 – All rights reserved
ISO 6272-1:2011(E) © ISO 2011 – All rights reserved iii Contents Page Foreword.iv 1 Scope.1 2 Normative references.1 3 Principle.1 4 Apparatus.2 5 Sampling.2 6 Test panels.4 7 Procedure.5 8 Precision.6 9 Test report.7
ISO 6272-1:2011(E) iv © ISO 2011 – All rights reserved Foreword ISO (the International Organization for Standardization) 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 right 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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. ISO 6272-1 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes. This second edition cancels and replaces the first edition (ISO 6272-1:2002), which has been technically revised. The main technical changes are as follows: a) in the description of the guide tube (see 4.1.3) and in Figure 1, the play permitted between the guide tube and the falling weight has been changed; b) a “principle” clause has been added; c) the test is no longer carried out at a specified relative humidity; instead, the relative humidity is simply recorded but the test has to be completed within a specified length of time after conditioning the test panels; d) the supplementary test conditions (formerly Annex A) have been incorporated in the test report. ISO 6272 consists of the following parts, under the general title Paints and varnishes — Rapid-deformation (impact resistance) tests: ⎯ Part 1: Falling-weight test, large-area indenter ⎯ Part 2: Falling-weight test, small-area indenter
INTERNATIONAL STANDARD ISO 6272-1:2011(E) © ISO 2011 – All rights reserved 1 Paints and varnishes — Rapid-deformation (impact resistance) tests — Part 1: Falling-weight test, large-area indenter 1 Scope This part of ISO 6272 describes a method for evaluating the resistance of a dry film of paint, varnish or related product to cracking or peeling from a substrate when it is subjected to a deformation caused by a falling weight, with a 20-mm-diameter spherical indenter, dropped under standard conditions. NOTE The terms “impact” and “impact resistance” are used in the title and text of this part of ISO 6272, but an important characteristic of the apparatus used is that it should produce rapid deformation rather than a true impact. The method described can be applied ⎯ either as a pass/fail test, the test being carried out from one drop height and with a specified mass, so as to test compliance with a particular specification; ⎯ or as a classification test, to determine, by gradually increasing the drop height and/or the mass, the minimum mass and/or drop height for which the coating cracks or peels from its substrate. 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. ISO 1513, Paints and varnishes — Examination and preparation of test samples ISO 1514, Paints and varnishes — Standard panels for testing ISO 2808, Paints and varnishes — Determination of film thickness ISO 3270, Paints and varnishes and their raw materials — Temperatures and humidities for conditioning and testing ISO 13076, Paints and varnishes — Lighting and procedure for visual assessments ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling 3 Principle The coating under test is applied to suitable, thin (normally metal) panels. After the coating has cured, a standard weight is dropped on to each panel from a height that will cause deformation of the coating and the substrate. The test can be carried out with the coated side of the panel facing upwards (i.e. towards the falling SIST EN ISO 6272-1:2011
ISO 6272-1:2011(E) 2 © ISO 2011 – All rights reserved weight) or downwards (i.e. away from the weight). By gradually increasing the height from which the weight drops, the point at which failure occurs can be determined. Films generally fail by cracking, which is made more visible by the use of a magnifier. 4 Apparatus Ordinary laboratory apparatus and glassware, together with the following: 4.1 Falling-weight apparatus, compromising the elements described in 4.1.1 to 4.1.6. 4.1.1 Base stand, of sufficient mass to support the die (4.1.4). 4.1.2 Falling weights (see Figure 1), the head having the shape of a spherical segment of diameter (20 ± 0,3) mm, and a total mass of (1 000 ± 10) g or (2 000 ± 20) g, unless otherwise specified. 4.1.3 Vertical guide tube (see Figures 1 and 2), to direct the falling weight (4.1.2) perpendicularly on to the test panel. The guide tube shall be graduated in millimetres to indicate the distance above the surface of the test panel. To avoid excessive friction and to ensure accurate guidance, the difference between the inner diameter of the guide tube and the outer diameter of the falling weight shall be (0,7 ± 0,2) mm and the distance between the bottom end of the guide tube and the top of the test panel shall be not more than 45 mm. 4.1.4 Die (see Figure 1), ring-shaped with an inner diameter of (27 ± 0,3) mm. The inner upper edge of the ring shall be rounded, with a radius of curvature of (0,9 ± 0,2) mm. The minimum height of the ring shall be 20 mm. 4.1.5 Clamping sleeve (see Figures 1 and 2), to hold the test panel in position. The inner diameter at the bottom shall be the same as that of the die [(27 ± 0,3) mm]; however, it is important to ensure that the head of the weight can travel smoothly through the clamping sleeve. 4.1.6 Stops (see Figure 2), of different thicknesses, to limit the indentation depth of the falling weight. 4.2 Viewing lens, with a magnification of ×10. 5 Sampling Take a representative sample of the coating material to be tested (or of each product in the case of a multi-coat system), as described in ISO 15528. Examine and prepare each sample for testing, as described in ISO 1513. SIST EN ISO 6272-1:2011
ISO 6272-1:2011(E) © ISO 2011 – All rights reserved 3 Dimensions in millimetres
Key 1 guide tube 2 weight 3 additional weight(s), if required 4 clamping sleeve 5 die a The difference between the inner diameter of the guide tube and the outer diameter of the falling weight is (0,7 ± 0,2) mm. Figure 1 — Falling-weight apparatus showing required dimensions SIST EN ISO 6272-1:2011
ISO 6272-1:2011(E) 4 © ISO 2011 – All rights reserved
Key 1 guide tube 2 falling weight 3 stops 4 clamping sleeve 5 die 6 test panel Figure 2 — Side view of falling-weight apparatus 6 Test panels 6.1 Substrate If a metal panel is used, it shall conform to the requirements of ISO 1514. Whatever the panel material, the panels shall be planar, free from distortion and at least 0,25 mm thick. The dimensions shall be such as to allow the test to be carried out at at least five different positions not less than 40 mm from each other and not less than 20 mm from the edge of the panel.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.