1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1519:2011Paints and varnishes Bendtest (cylindrical mandrel) (ISO1519:2011)BS EN ISO 1519:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implemen
2、tation of EN ISO 1519:2011.It supersedes BS EN ISO 1519:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee STI/10, Test methods for paints.A list of organizations represented on this committee can beobtained on request to its secretary.This publicatio
3、n does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 66279 9ICS 87.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority o
4、f theStandards Policy and Strategy Committee on 31 January 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1519 January 2011 ICS 87.040 Supersedes EN ISO 1519:2002English Version Paints and varnishes - Bend test (cylindrical mandrel)
5、 (ISO 1519:2011) Peintures et vernis - Essai de pliage sur mandrin cylindrique (ISO 1519:2011) Beschichtungsstoffe - Dornbiegeversuch (zylindrischer Dorn) (ISO 1519:2011) This European Standard was approved by CEN on 8 January 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regul
6、ations 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 membe
7、r. 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. CE
8、N 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,
9、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 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nationa
10、l Members. Ref. No. EN ISO 1519:2011: EBS EN ISO 1519:2011EN ISO 1519:2011 (E) 3 Foreword This document (EN ISO 1519:2011) 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
11、 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 July 2011, and conflicting national standards shall be withdrawn at the latest by July 2011. Attention is drawn to the possibility tha
12、t 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 1519:2002. According to the CEN/CENELEC Internal Regulations, the national standards organizati
13、ons 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
14、, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1519:2011 has been approved by CEN as a EN ISO 1519:2011 without any modification. BS EN ISO 1519:2011ISO 1519:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv Introd
15、uction.v 1 Scope1 2 Normative references1 3 Principle .1 4 Apparatus.2 5 Sampling 5 6 Test panels.5 7 Procedure.6 8 Expression of results7 9 Precision 7 10 Test report7 Bibliography9 BS EN ISO 1519:2011ISO 1519:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for S
16、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
17、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. Internationa
18、l 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
19、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
20、 1519 was prepared by Technical Committee 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 1519:2002), which has been technically revised. The main changes are: a) A principle clause has
21、 been added. b) The requirement to carry out the test at a controlled relative humidity has been deleted (although the relative humidity is measured and recorded during the test). A maximum limit for the time between conditioning and testing has therefore been added. c) The supplementary test condit
22、ions (formerly Annex A) have been integrated in the test report. d) Information has been given on the precision of the method. BS EN ISO 1519:2011ISO 1519:2011(E) ISO 2011 All rights reserved vIntroduction This International Standard is one of six which specify empirical test procedures for assessin
23、g 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 five documents are: ISO 1520, Paints and varnishes Cupping test ISO 6272-1, Paints and varnishes Rapid-deformation (impact resi
24、stance) tests Part 1: Falling-weight test, large-area indenter ISO 6272-2, Paints and varnishes Rapid-deformation (impact resistance) tests Part 2: Falling-weight test, small-area indenter ISO 6860, Paints and varnishes Bend test (conical mandrel) ISO 17132, Paints and varnishes T-bend test The meth
25、od chosen will depend on the property to be measured and on agreement between the interested parties. In principle, all these tests differ from each other technically and in their accuracy. BS EN ISO 1519:2011BS EN ISO 1519:2011INTERNATIONAL STANDARD ISO 1519:2011(E) ISO 2011 All rights reserved 1Pa
26、ints and varnishes Bend test (cylindrical mandrel) 1 Scope This 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 or plastics substrate when subjected to bending round
27、 a cylindrical mandrel under standard conditions. For a multi-coat system, each coat can be tested separately or the complete system can be tested. The method specified can be carried out either as a “pass/fail” test, by carrying out the test with a single specified size of mandrel, to assess compli
28、ance with a particular requirement; or by repeating the procedure using successively smaller mandrels to determine the diameter of the first mandrel over which the coating cracks and/or becomes detached from the substrate. Two types of apparatus are specified, type 1 being appropriate for use on tes
29、t panels of thickness up to 0,3 mm, and type 2 for use on test panels of thickness up to 1,0 mm. Both types of apparatus have been found to give similar results with the same coating, but normally only one will be used for testing a given product. 2 Normative references The following referenced docu
30、ments 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
31、 1514, Paints and varnishes Standard panels for testing ISO 2808, Paints and varnishes Determination of film thickness ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling 3 Principle A coated test panel is clamped in the test apparatus and then bent round a cylindrical m
32、andrel. The bent panel is examined to see if the coating has been cracked when using the agreed or specified size of mandrel (“pass/fail test”) or, alternatively, the diameter of the first (smallest) mandrel over which the coating cracks and/or becomes detached from the substrate is determined. BS E
33、N ISO 1519:2011ISO 1519:2011(E) 2 ISO 2011 All rights reserved4 Apparatus 4.1 Bend test apparatus 4.1.1 Material In both types of apparatus specified below, the mandrels shall be made of a rigid and suitably corrosion-resistant material, for example stainless steel. 4.1.2 Type 1 mandrel tester An ex
34、ample of a type 1 tester is shown in Figures 1 and 2. This type of tester is used with test panels of thickness not greater than 0,3 mm. A set of hinges is provided, each incorporating a cylindrical mandrel. The diameters of the mandrels are 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 16 mm, 2
35、0 mm, 25 mm and 32 mm, respectively, with a tolerance of 0,1 mm. The dimensions of the apparatus are not critical, except that the gap between the surface of the mandrel and the plates of the hinges shall be (0,55 0,05) mm. The mandrel shall be free to rotate on its axis and the apparatus shall be p
36、rovided with a stop to ensure that, when the test panel is bent, the two parts are parallel. Especially with the 2 mm diameter mandrel, it is important to ensure that no distortion of the mandrel takes place during the bending process, and not to use any mandrel showing such distortion. Key 1 mandre
37、l 2 stop of similar height to mandrel Figure 1 Type 1 bend test apparatus Figure 2 Type 1 bend test apparatus in use BS EN ISO 1519:2011ISO 1519:2011(E) ISO 2011 All rights reserved 34.1.3 Type 2 mandrel tester An example of a type 2 tester is shown in Figures 3 and 4. Type 2 testers are normally us
38、ed for panels with a thickness of up to 1,0 mm. With coatings on soft metals, for example aluminium, and on plastics, thicker panels may be used with the provision that there is no deformation of the mandrel (see 6.3). The diameters of the mandrels are 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 m
39、m, 16 mm, 20 mm, 25 mm and 32 mm, with a tolerance of 0,1 mm. By agreement between the interested parties, mandrels of other diameters may be used with the type 2 tester. NOTE The bending piece of the type 2 tester, illustrated as an example in Figures 3 and 4, consists of three PVC rolls which are
40、arranged side by side and run on pivoting bearings. Thus, the coating is not exposed to damage or shear stress during the test. Key 1 screw handle 2 bending piece 3 mandrel 4 mandrel bearing 5 adjusting screw 6 clamping jaw 7 thrust bearing Figure 3 Example of a type 2 mandrel bending tester BS EN I
41、SO 1519:2011ISO 1519:2011(E) 4 ISO 2011 All rights reservedKey 1 screw handle 2 bending piece 3 mandrel 4 mandrel bearing 5 adjusting screw 6 clamping jaw 7 thrust bearing Figure 4 Exploded diagram of the tester shown in Figure 3 4.2 Controlled-temperature chamber This is required for tests which ar
42、e specified to be carried out at temperatures other than (23 2) C. It consists of an oven or refrigerator in which the temperature of the chamber can be controlled to within 1 C of the required test temperature. A temperature-indicating or recording device shall be located with its bulb or sensitive
43、 element in close proximity to the coating under test. NOTE A remote-control device by means of which the test panel can be bent without opening the chamber can be helpful in performing the test without causing any change in the test temperature. 4.3 Magnifying lens A lens with 10 magnification is r
44、equired. BS EN ISO 1519:2011ISO 1519:2011(E) ISO 2011 All rights reserved 55 Sampling Take a representative sample of the product to be tested (or of each product in the case of a multi-coat system), in accordance with ISO 15528. Examine and prepare each sample for testing, in accordance with ISO 15
45、13. 6 Test panels 6.1 Substrate The test panels shall be of steel, tinplate or soft aluminium complying with the requirements of ISO 1514. Plastics substrates are also suitable and may be used subject to agreement between the interested parties. 6.2 General The test panels shall be flat and free fro
46、m distortion, and both the front and the back shall be free from any visible ridges or cracks. 6.3 Shape and dimensions The test panels shall be rectangular. The dimensions of the test panel shall be chosen so that it can be cut into three strips of at least 30 mm in width. The size and the thicknes
47、s of the strips will depend on the type of tester, either 0,3 mm thick (for type 1) or 1,0 mm (for type 2), unless otherwise specified. If use of plastics panels is agreed, a thickness of up to 4,0 mm may be used. The test panels may be cut to size after coating and drying, provided no distortion oc
48、curs. In the case of aluminium panels, the longer side shall be parallel to the direction of rolling during manufacture. The thickness and the nature of the substrate shall be reported in the test report. 6.4 Preparation and coating of panels Prepare each test panel in accordance with ISO 1514 and c
49、oat it by the specified method with the product or system under test. If the product under test is applied by brushing, the brush marks shall be parallel to the longer side of the panel. 6.5 Drying and conditioning Dry (or stove) and age, if applicable, each coated test panel for the specified time under the specified conditions. Before testing, condition the coated panels at a temperature of (23 2) C and a relative humidity of (50 5) % (i.e. in accordance with ISO 3270), unless otherwise
