1、January 2012 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).ICS
2、 87.040!$y3“1861657www.din.deDDIN EN ISO 1518-2Paints and varnishes Determination of scratch resistance Part 2: Variable-loading method (ISO 1518-2:2011)English translation of DIN EN ISO 1518-2:2012-01Beschichtungsstoffe Bestimmung der Kratzbestndigkeit Teil 2: Verfahren mit kontinuierlich ansteigen
3、der Last (ISO 1518-2:2011)Englische bersetzung von DIN EN ISO 1518-2:2012-01Peintures et vernis Dtermination de la rsistance la rayure Partie 2: Mthode charge variable (ISO 1518-2:2011)Traduction anglaise de DIN EN ISO 1518-2:2012-01SupersedesDIN EN ISO 12137-2:2006-09www.beuth.deDocument comprises
4、pagesIn case of doubt, the German-language original shall be considered authoritative.1501.12 DIN EN ISO 1518-2:2012-01 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test
5、methods for paints and varnishes” (Secretariat: BSI, United Kingdom) in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (Coatin
6、gs and Coating Materials Standards Committee), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. DIN EN ISO 1518 consists of the following parts, under the general title Paints and varnishes Determination of scratch resistance: Part 1: Constant-load
7、ing method Part 2: Variable-loading method The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1513 DIN EN ISO 1513 ISO 1514 DIN EN ISO 1514 ISO 1518-1 DIN EN ISO 1518-1 ISO 2808 DIN EN ISO 2808 ISO 12137 DIN EN ISO 12137 ISO 15528 DIN EN I
8、SO 15528 Amendments This standard differs from DIN EN ISO 12137-2:2006-09 as follows: a) the number of the standard has been changed from DIN EN ISO 12137-2 to DIN EN ISO 1518-2 in order to group the scratch-resistance tests under the same number (DIN EN ISO 1518); b) a definition of “scratch” has b
9、een included; c) the supplementary test conditions (formerly Annex A) have been integrated in the test report; d) the standard has been editorially revised and normative references have been updated. Previous editions DIN EN ISO 12137-2: 2006-09 DIN EN ISO 1518-2:2012-01 3 National Annex NA (informa
10、tive) Bibliography DIN EN ISO 1513, Paints and varnishes Examination and preparation of test samples DIN EN ISO 1514, Paints and varnishes Standard panels for testing DIN EN ISO 1518-1, Paints and varnishes Determination of scratch resistance Part 1: Constant-loading method DIN EN ISO 2808, Paints a
11、nd varnishes Determination of film thickness DIN EN ISO 12137, Paints and varnishes Determination of scratch resistance DIN EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling DIN EN ISO 1518-2:2012-01 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPEN
12、NE EUROPISCHE NORM EN ISO 1518-2 October 2011 ICS 87.040 Supersedes EN ISO 12137- :2006English Version Paints and varnishes - Determination of scratch resistance - Part 2: Variable-loading method (ISO 1518-2:2011) Peintures et vernis - Dtermination de la rsistance la rayure - Partie 2: Mthode charge
13、 variable (ISO 1518-2:2011) Beschichtungsstoffe - Bestimmung der Kratzbestndigkeit -Teil 2: Verfahren mit kontinuierlich ansteigender Last (ISO 1518-2:2011) This European Standard was approved by CEN on 14 October 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
14、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 Europ
15、ean 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
16、 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
17、, 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 national Members. Re
18、f. No. EN ISO 1518-2:2011: E2Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle 4 5 Apparatus .5 6 Sampling .7 7 Test panels .7 7.1 Substrate 7 7.2 Preparation and coating 7 7.3 Drying and conditioning .8 7.4 Thickness of coating .8 8 Procedure .8 8.1
19、Test conditions 8 8.2 Preparation for the test .8 8.3 Determination .8 9 Expression of results 9 10 Precision .9 11 Test report . 10 Bibliography . 11 EN ISO 1518-2:2011 (E) DIN EN ISO 1518-2:2012-01 2 Foreword This document (EN ISO 1518-2:2011) has been prepared by Technical Committee ISO/TC 35 “Pa
20、ints 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 April 2012,
21、 and conflicting national standards shall be withdrawn at the latest by April 2012. Attention is drawn to the possibility that 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. Th
22、is document supersedes EN ISO 12137-1:2006. 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
23、, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1518-2:2011 has been approved by CEN as a EN ISO 1518-2
24、:2011 without any modification. EN ISO 1518-2:2011 (E) DIN EN ISO 1518-2:2012-01 3 1 Scope This part of ISO 1518 specifies a method for determining, using a pointed stylus loaded with a continuously increasing load, the scratch resistance of a single coating of a paint, varnish or related product, o
25、r the upper layer of a multicoat system. This test has been found to be useful in comparing the scratch resistance of different coatings. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in scratch resistance. Neither this part of ISO 1
26、518 nor ISO 1518-1 specifies a method using a curved stylus, which is specified in ISO 12137. The choice between the three methods will depend on the particular practical problem. 2 Normative references The following referenced documents are indispensable for the application of this document. For da
27、ted 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, Pa
28、ints and varnishes Determination of film thickness ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 scratch, n cut or gouge through the surface of a coating, made
29、 by contact with a sharp object 4 Principle The product or system under test is applied at uniform thickness to flat panels of uniform surface texture. After drying/curing, the scratch resistance is determined using an automatic instrument which pushes the panels beneath a pointed stylus mounted so
30、that it presses down perpendicularly on the surface of the test panel. The load on the test panel is increased continuously until the coating is scratched. EN ISO 1518-2:2011 (E) DIN EN ISO 1518-2:2012-01 4 5 Apparatus 5.1 Instrument for determining scratch resistance. A suitable instrument1)is show
31、n in Figure 1. It consists principally of a counterbalanced beam with, mounted at one end, a pointed stylus. The test panel is placed on a sliding table which is motor-driven to move under the stylus at a speed of 10 mm/s. A continuous-loading weight mounted over the beam acts on the beam in such a
32、way that, as the test panel passes under the stylus, the load on the stylus is continuously increased. The stylus-loading range can be varied by changing the continuous-loading weight (weights giving loading ranges of 0 g to 50 g, 0 g to 100 g and 0 g to 200 g are available, for instance). Mounted o
33、ver the stylus itself is a small scale pan on which weights can be placed to expand the stylus-loading range (adding a weight of 100 g, for instance, changes a 0 g to 200 g loading range to one of 100 g to 300 g). 1) This apparatus is available from Shinto Scientific Co., Ltd, 27 Kanda-higashikonyac
34、ho, Chiyoda-ku, Tokyo 101-0034, Japan. This information is given for the convenience of users of this part of ISO 1518 and does not constitute endorsement by ISO of the apparatus shown. Other types of scratch tester may be used if they can be shown to give similar relative ratings. EN ISO 1518-2:201
35、1 (E) DIN EN ISO 1518-2:2012-01 5 Key 1 cylindrical counterweight 2 continuous-loading weight 3 scale pan 4 sliding table 5 stylus Figure 1 Scratch instrument with pointed stylus 5.2 Stylus, preferably tipped with a conical sapphire or diamond, the point of which is rounded to a radius of (0,03 0,00
36、5) mm (see Figure 2). EN ISO 1518-2:2011 (E) DIN EN ISO 1518-2:2012-01 6 Dimensions in millimetres Key 1 conical sapphire or diamond 2 stylus Figure 2 Stylus tipped with conical sapphire or diamond 5.3 Microscope, preferably with a magnification range extending up to 100, required to examine the sty
37、lus. It may also be used to inspect the scratched coating. 6 Sampling Take a representative sample of the product to be tested (or of each product in the case of a multicoat system), as specified in ISO 15528. Examine and prepare each sample for testing, as specified in ISO 1513. 7 Test panels 7.1 S
38、ubstrate Select the substrate from one of those specified in ISO 1514 and, where possible, in accordance with the desired practical application. The panels shall be plane and free from distortion, with a maximum thickness of about 12 mm, and 100 mm to 400 mm wide and long. 7.2 Preparation and coatin
39、g Prepare each test panel in accordance with ISO 1514 and then coat it by the specified method with the product or system under test. EN ISO 1518-2:2011 (E) DIN EN ISO 1518-2:2012-01 7 7.3 Drying and conditioning Dry (or stove) and age, if applicable, each coated test panel according to the instruct
40、ions given for the product or system under test. Before testing, condition the coated panels at (23 2) C and a relative humidity of (50 5) % for a minimum period of 16 h. The coated panels shall be stored and handled so as to avoid contamination by fingerprints and dust. NOTE Fingerprints, dust or o
41、ther contamination on the surface will result in a lower accuracy. 7.4 Thickness of coating Determine the thickness, in micrometres, of the dried coating by one of the procedures specified in ISO 2808. 8 Procedure 8.1 Test conditions Carry out the test at (23 2) C and a relative humidity of (50 5) %
42、. 8.2 Preparation for the test Place the instrument on a stable and level surface. Level the instrument in accordance with the manufacturers instructions. Examine the stylus under the microscope, preferably at a magnification of 100, in accordance with the instrument operation manual, to ensure that
43、 it is undamaged. Clean the stylus, if necessary, with a clean cloth or lint-free paper. 8.3 Determination Place a test panel up against the stop on the sliding table. Secure the panel in place by turning the securing screws evenly about one turn at a time. Secure the stylus in the vertical position
44、. Adjust the counterweights so that, when the tip of the stylus is just touching the surface of the test panel, the load on the stylus is zero. Adjust the height of the stylus to the thickness of the test panel, with the beam released and the stylus resting on the test panel. Load the stylus at the
45、lowest weight range to be tested, e.g. 0 g to 50 g. Start the instrument at a rate of about 10 mm/s. The instrument shown in Figure 1 will stop automatically when the sliding table has moved 100 mm. Inspect the coating for scratching under a suitable magnification or with the naked eye. EN ISO 1518-
46、2:2011 (E) DIN EN ISO 1518-2:2012-01 8 If no scratching occurs, increase the stylus-loading range, e.g. 0 g to 100 g, and continue in test areas that do not overlap until scratching does occur. When scratching has occurred, determine which type of defect is involved. The defects are defined as follo
47、ws: a) Plastic deformation: the permanent indentation of the surface with or without any surface blemish or cohesive fracture. b) Surface blemish: a superficial surface effect caused by a difference in the scattering of light between the line of test and the adjacent surface. c) Surface scratch: a c
48、ontinuous cut or gouge through the surface. d) Cohesive fracture: the presence of a visible surface break or rupture. e) Combinations of the above. NOTE In some cases, one of these types of defect might be of particular importance. Repeat the determination at least twice (i.e. for a total of at least three determinations) on the same panel at the stylus-loading range at which scratching occurs. For each of the determinations, measure the distance d, in millimetres, from the final-load
