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1、BRITISH STANDARD BS EN ISO 1520:1995 BS 3900-E4: 1995 Paints and varnishes Cupping test This European Standard EN ISO 1520:1995 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:58:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1520:1995 This Bri
2、tish Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals was published under the authority of the Standards Board and comes into effect on 15 May 1995 BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference STI/
3、10 Special announcement in BSI News January 1995 ISBN 0 580 23798 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee STI/10, Test methods for paints, upon which the following bodies were represented: British Coatings Feder
4、ation Ltd. European Resin Manufacturers Association Health and Safety Executive Minsitry of Defence National Centre of Tribology Oil and Colour Chemists Association Paint Research Association Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov
5、 20 02:58:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1520:1995 BSI 02-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 0Introduction3 1Scope and field of application3 2References3 3Apparatus3 4Sampling3 5Test panels4 6Procedure4 7Test report4 An
6、nex ZA (normative) Normative references to international publications with their relevant European publications6 Figure Cupping test apparatus5 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:58:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1520:1995 ii BSI 02-1999 National forew
7、ord This British Standard has been prepared by Technical Committee STI/10, and is the English language version of EN ISO 1520:1995 Paints and varnishes Cupping test, published by the European Committee for Standardization, which is identical with ISO 1520:1973, published by the International Organiz
8、ation for Standardization (ISO). This standard supersedes BS 3900-E4:1976 which is withdrawn. The main differences between this standard and BS 3900-E4:1976 are: a) there is no supplementary information clause; b) the application of paint is by the method specified with the system of product under t
9、est. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International stand
10、ardCorresponding British Standard BS 3900 Methods of test for paints EN 2152:1994 (ISO 1512:1991) Part A1:1992 Sampling ISO 2808:1991Part C5:1991 Determination of film thickness EN ISO 1513:1994BS EN ISO 1513:1994 Paints and varnishes Examination and preparation of samples for testing Summary of pag
11、es This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, pages 2 to 6 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover
12、. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:58:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1520 March 1995 ICS 87.040 Descriptors: Paints, varnishes, tests, ductibility tests English version Paints and varnishes Cupping test
13、(ISO 1520:1973) Peintures et vernis Essai demboutissage (ISO 1520:1973) Lacke und Anstrichstoffe Tiefngsprufung (ISO 1520:1973) This European Standard was approved by CEN on 1995-01-05. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin
14、g 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 Central Secretariat or to any CEN member. This European Standard exists in three official versio
15、ns (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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, De
16、nmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36
17、, B-1050 Brussels 1995 Copyright reserved to CEN members Ref. No. EN ISO 1520:1995 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:58:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 1520:1995 BSI 02-1999 2 Foreword This European Standard has been taken over by the Technical Committe
18、e CEN/TC 139, Paints and varnishes, from the work of ISO/TC 35, Paints and varnishes, of the International Organization for Standardization (ISO). 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 S
19、eptember 1995, and conflicting national standards shall be withdrawn at the latest by September 1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Irelan
20、d, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. NOTENormative references to international publications are listed in Annex ZA (normative). Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:58:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN IS
21、O 1520:1995 BSI 02-19993 0 Introduction This International Standard is one of a series dealing with the sampling and testing of paints, varnishes and related products. It should be read in conjunction with ISO 1512, ISO 1513 and ISO 1514. This International Standard is one of three which specify emp
22、irical test procedures for assessing the resistance of coatings of paints, varnishes and related products to cracking and/or detachment from the substrate under different conditions of deformation. The other two of these documents are ISO 1519, Paints and varnishes Bend test (cylindrical mandrel), a
23、nd ISO .,1) Paints and varnishes Rapid deformation test. The method of test specified requires to be completed, for any particular application, by the following supplementary information. This information shall be derived from the national standard or other document for the product under test or, wh
24、ere appropriate, shall be the subject of agreement between the interested parties. a) Nature, thickness and surface preparation of substrate. b) Method of application of test coating to substrate. c) Thickness, in micrometres, of the dry coating, including method of measurement, and whether it is a
25、single coating or a multicoat system. d) Duration and conditions of drying of the coated panel before testing (or conditions of stoving and ageing, if applicable). e) The specified depth of indentation, if applicable, at which the test is to be carried out. 1 Scope and field of application 1.1 This
26、International Standard specifies an empirical test procedure for assessing the resistance of a coating of paint, varnish or related product to cracking and/or detachment from a metal substrate when subjected to gradual deformation by indentation under standard conditions. 1.2 For a multicoat system,
27、 each coat may be tested separately or the complete system may be tested. 1.3 The method specified may be carried out either as a “go/no go” test, by testing to a specified depth of indentation to assess compliance with a particular requirement; or by gradually increasing the depth of indentation to
28、 determine the minimum depth at which the coating cracks and/or becomes detached from the substrate. 2 References ISO 1512, Paints and varnishes Sampling. ISO 1513, Paints and varnishes Examination and preparation of samples for testing. ISO 1514, Paints and varnishes Standard panels for testing. IS
29、O 2808, Paints and varnishes Determination of film thickness. 3 Apparatus 3.1 The cupping test apparatus shall comply with the design and dimensions shown in the figure and shall consist essentially of the following: 3.1.1 Die. This is surface hardened and the surface in contact with the test panel
30、is plane polished. 3.1.2 Retaining ring. The surface in contact with the test panel is plane polished and parallel to the contacting surface of the die. 3.1.3 Indenter. The part contacting the test panel is of hardened polished steel and forms a hemisphere of 20 mm diameter. During the test the inde
31、nter shall be prevented from turning and the centre of the spherical portion shall not deviate from the axis of the die by more than 0,1 mm. 3.1.4 Measuring device. This measures the depth of the indentation made by the indenter to the nearest 0,05 mm. 3.2 The surface of the die, retaining ring and
32、indenter which come into contact with the test panel shall be smooth, rust-free and clean. 3.3 The tip of the hemisphere, when at the zero position, shall be in the same plane as the face of the retaining ring, in contact with the test panel and shall be in the centre of the bore of the die. 3.4 It
33、is preferable to use a mechanically driven indenter, but a hand-operated apparatus is also acceptable, provided that it enables the standard conditions of test (see clause 6) to be achieved. 4 Sampling A representative sample of the product to be tested (or of each product in the case of a multicoat
34、 system) shall be taken as specified in ISO 1512. The samples shall then be examined and prepared for testing as specified in ISO 1513. 1) In preparation. (See ISO/TR 6272) Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:58:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 1520:1995 4 B
35、SI 02-1999 5 Test panels 5.1 Material Unless otherwise specified, the test panels shall be of burnished steel, complying with the requirements of ISO 1514. 5.2 General The test panels shall be flat and free from distortion. 5.3 Dimensions The test panels shall be rectangular with the following dimen
36、sions: thickness: not less than 0,3 mm and not more than 1,25 mm (as specified and measured with a micrometer to the nearest 0,01 mm); width and length: at least 70 mm (upper limit depending on the capacity of the apparatus). The test panels may be cut to size after coating and drying, provided no d
37、istortion occurs. 5.4 Preparation and coating of panels The test panels shall be prepared in accordance with ISO 1514, unless otherwise specified, and shall then be coated by the specified method with the product or system under test. 5.5 Thickness of coating The thickness, in micrometres, of the dr
38、y coating shall be determined by the method specified, using one of the procedures specified in ISO 2808. 6 Procedure 6.1 General 6.1.1 Drying the test panel The coated test panels shall be dried (or stoved and aged) for the specified time and, unless otherwise specified, shall be conditioned at a t
39、emperature of 23 2 C and 50 5 % relative humidity for a minimum time of 16 h. The appropriate test procedure shall then be carried out as soon as possible. 6.1.2 Ambient conditions The test shall be carried out at a temperature of 23 2 C and 50 5 % relative humidity, unless otherwise specified. 6.2
40、Procedure for a single specified depth of indentation The following procedure shall be carried out on two separate test panels (if the results differ, additional tests shall be made). 6.2.1 Hold the test panel firmly between the retaining ring and the die with the coating towards the die and with th
41、e hemispherical end of the indenter in contact with the test panel (zero position of the indenter). Adjust the panel until the central axis of the indenter intersects the panel at least 35 mm from each edge. 6.2.2 Advance the hemispherical end of the indenter into the test piece at a constant rate o
42、f 0,2 0,1 mm/s until the specified depth is reached, i.e. until the indenter has travelled this distance from the zero position. 6.2.3 Using normal corrected vision or, by agreement, a lens of 10 magnification, examine the coating of the test panel for cracking and/or detachment from the substrate.
43、NOTE 1If a lens is used, it is essential to mention this fact in the test report and to avoid misleading comparisons with results obtained using normal vision only. NOTE 2The test results shall not be regarded as valid if the substrate shows signs of cracking. 6.3 Procedure for determination of mini
44、mum depth of indentation to cause failure Carry out the procedure given in 6.2 until, using normal corrected vision (or, by agreement, a lens of 10 magnification), a crack is first observed on the surface of the coating and/or the coating begins to become detached from the substrate2). Stop the inde
45、nter at this point and measure the depth of indentation (see Figure) to the nearest 0,1 mm, i.e. the distance travelled by the indenter from the zero position. Confirm the result by repeating the determination on a fresh panel (if the results differ, further determinations shall be made). 7 Test rep
46、ort The test report shall include the following information: a) a reference to this International Standard or to a corresponding national standard; b) the type and identification of the product under test; c) the items of supplementary information referred to in the Introduction to this Internationa
47、l Standard; d) the national standard or other document supplying the information referred to in e) above; e) any deviation, by agreement or otherwise, from the test procedure specified; f) a statement as to whether a mechanically driven or a hand-operated indenter was used; 2) In order to facilitate
48、 accurate observation of the end point, it is permissible to reduce slightly the rate of advance of the indenter when approaching the expected end point (determined, if necessary, in a preliminary test). Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:58:15 GMT+00:00 2006, Uncontrolled Cop
49、y, (c) BSI EN ISO 1520:1995 BSI 02-19995 g) the result of the test; report as required (stating whether normal corrected vision or a lens was used). either, for each determination, the extent of any cracking and/or detachment of the cracking from the substrate, at the specified depth of indentation, or the depth of indentation, to the nearest 0,5 mm at which the coating started to crack and/or started to detach from the substrate; h) the date of the test. Figure Cupping test apparatus Licensed Copy: sheffieldun sheffi