1、November 2011 Translation by DIN-Sprachendienst.English price group 9No 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).IC
2、S 87.040!$vT3“1834916www.din.deDDIN EN ISO 6272-1Paints and varnishes Rapid-deformation (impact resistance) tests Part 1: Falling-weight test, large-area indenter (ISO 6272-1:2011)English translation of DIN EN ISO 6272-1:2011-11Beschichtungsstoffe Prfung der Widerstandsfhigkeit bei schlagartiger Ver
3、formung (Schlagprfung) Teil 1: Prfung durch fallendes Gewichtsstck, groe Prfflche (ISO 6272-1:2011)Englische bersetzung von DIN EN ISO 6272-1:2011-11Peintures et vernis Essais de dformation rapide (rsistance au choc) Partie 1: Essai de chute dune masse avec pntrateur de surface importante(ISO 6272-1
4、:2011)Traduction anglaise de DIN EN ISO 6272-1:2011-11SupersedesDIN EN ISO 6272-1:2004-08www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 14 pages11.11 DIN EN ISO 6272-1:2011-11 2 A comma is used as the decimal marker. National foreword
5、This standard has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test methods for paints and varnishes” (Secretariat: BSI, United Kingdom) in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The r
6、esponsible German body involved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. DIN EN ISO 6272 consists of the
7、 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 The DIN Standards corresponding to the International Standards referred to in this document ar
8、e as follows: ISO 1513 DIN EN ISO 1513 ISO 1514 DIN EN ISO 1514 ISO 2808 DIN EN ISO 2808 ISO 3270 DIN EN 23270 ISO 13076 DIN EN ISO 13076 ISO 15528 DIN EN ISO 15528 Amendments This standard differs from DIN EN ISO 6272-1:2004-08 as follows: a) in the description of the guide tube (see 4.1.3) and in
9、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 spec
10、ified length of time after conditioning the test panels; d) the supplementary test conditions (formerly Annex A) have been incorporated in the test report. Previous editions DIN EN ISO 6272: 1994-10 DIN EN ISO 6272-1: 2004-08 DIN EN ISO 6272-1:2011-11 3 National Annex NA (informative) Bibliography D
11、IN 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 samples for testing DIN EN ISO 1514, Paints and varnishes Standard panels for testing DIN EN ISO 2808, Paints and varni
12、shes Determination of film thickness DIN EN ISO 13076, Paints and varnishes Lighting and procedure for visual assessments DIN EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling DIN EN ISO 6272-1:2011-11 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROP
13、ENNE EUROPISCHE 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 dformation rapide (rsistance
14、au choc) - Partie 1: Essai de chute dune masseavec pntrateur de surface importante (ISO 6272-1:2011)Beschichtungsstoffe - Prfung der Widerstandsfhigkeit bei schlagartiger Verformung (Schlagprfung) - Teil 1: Prfung durch fallendes Gewichtsstck, groe Prfflche (ISO 6272-1:2011) This European Standard w
15、as 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 nat
16、ional 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 lang
17、uage 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, Lat
18、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Bruss
19、els 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: EEN ISO 6272-1:2011 (E) 2 Contents PageForeword31 Scope 42 Normative references 43 Principle44 Apparatus .55 Sampling.56 Test panels .77 Procedure .88 Precis
20、ion.99 Test report 10DIN EN ISO 6272-1:2011-11 EN ISO 6272-1:2011 (E) 3 Foreword This document (EN ISO 6272-1:2011) 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 b
21、y 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 February 2012, and conflicting national standards shall be withdrawn at the latest by February 2012. Attention is drawn to the possibility th
22、at 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 ISO 6272-1:2004. According to the CEN/CENELEC Internal Regulations, the national standards organiz
23、ations 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, Portu
24、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 6272-1:2011 has been approved by CEN as a EN ISO 6272-1:2011 without any modification. DIN EN ISO 6272-1:2011-11 EN ISO 6272-1:2011 (E) 4 1 Scope This part of ISO 6272 describes a
25、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 “
26、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
27、 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 Normat
28、ive 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 Exa
29、mination 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 var
30、nishes 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 fr
31、om 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 DIN EN ISO 6272-1:2011-11 EN ISO 6272-1:2011 (E) 5 weight) or downwards (i.e. away from the weight). By gradually increasin
32、g 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, c
33、ompromising 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 sp
34、ecified. 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 guida
35、nce, 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 inne
36、r 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
37、 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
38、 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. DIN EN ISO 6272-1:2011-11 EN ISO 6272-1:2011 (E) 6 Dimensions in mill
39、imetres Key 1 guide tube 2 weight 3 additional weight(s), if required 4 clamping sleeve 5 die aThe 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 DIN EN ISO 6272-1:201
40、1-11 EN ISO 6272-1:2011 (E) 7 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
41、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. Measure the thickness to the nearest 0,01
42、 mm. DIN EN ISO 6272-1:2011-11 EN ISO 6272-1:2011 (E) 8 6.2 Preparation and coating Prepare metal test panels in accordance with ISO 1514. Whatever the panel material, coat the prepared panel by the method specified by the manufacturer of the product or system under test to give the dry-film thickne
43、ss specified by the manufacturer, or by a method agreed upon between the interested parties to give a dry-film thickness agreed upon between the interested parties. The coating method and dry-film thickness used shall be included in the test report see Clause 9, items c) 2) and c) 4). 6.3 Drying Dry
44、 (or stove) and age (if applicable) each coated test panel for the time, and under the conditions, specified by the manufacturer of the product or system under test, or as agreed between the interested parties. The time and conditions used shall be included in the test report see Clause 9, item c) 3
45、). 6.4 Thickness of coating Determine the thickness, in micrometres, of the dried coating by one of the procedures specified in ISO 2808. Make the measurements at, or as near as possible to, the positions at which the test is to be carried out. Use only test panels for which the film thickness value
46、s do not differ from the specified or agreed film thickness by more than 10 %. 7 Procedure 7.1 General Before testing, condition the coated panels at a temperature of (23 2) C and a relative humidity of (50 5) % (or at another temperature and humidity, agreed between the interested parties, from tho
47、se specified in ISO 3270) for a minimum period of 16 h. Begin the test procedure as soon as possible after conditioning, but in any case complete it not later than 30 min after removal of the test panels from conditioning. Mount the apparatus on a firm surface (for example, concrete, steel or stone)
48、. Carry out the test at (23 2) C or at another temperature, agreed between the interested parties, from those specified in ISO 3270. State the test temperature at which the test was carried out in the test report. Measure the relative humidity during the test and state it in the test report. 7.2 Pas
49、s/fail test (using a specified mass) Ensure that the guide tube (4.1.3) is vertical. Attach additional weight(s), if required, to the weight in order to achieve the required loading. Adjust the height of the weight to the required release-point (using the graduations on the guide tube) and lock in position. If necessary, fit stop(s) (4.1.6) of total thickness sufficient to limit the indentation to a depth agreed between the interested parties or as otherwise specified. Place
