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1、BRITISH STANDARD BS EN ISO 1518:2001 BS 3900-E2:1992 Incorporating Amendment No. 1 to BS 3900-E2:1992 (renumbers the BS as BS EN ISO 1518:2001) Methods of test for Paints Part E2: Scratch test NOTE It is recommended that this Part be read in conjunction with BS 3900-0, issued separately. The Europea
2、n Standard EN ISO 1518:2000 has the status of a British Standard. ICS 87.040 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:59:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1518:2001 This British Standard, ha
3、ving been prepared under the direction of the Pigments, Paints and Varnishes Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 June 1992 BSI 03-2001 First published 1966 Second edition June 1969 Third edition June 1992 The following BSI
4、references relate to the work on this standard: Committee reference STI/10 Draft for comment 87/51645 DC ISBN 0 580 20914 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Pigments, Paints and Varnishes Standards Policy Committee (PVC/-)
5、 to Technical Committee PVC/10, upon which the following bodies were represented: British Gas plc Health and Safety Executive Institute of Metal Finishing Ministry of Defence Oil and Colour Chemists Association Paint Research Association Paintmakers Association of Great Britain Ltd. Titanium Pigment
6、 Manufacturers Technical Committee Amendments issued since publication Amd. No.DateComments 12091March 2001 Implementation of the European Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:59:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1518:2001 BSI 03-2001 i Contents Pa
7、ge Committees responsibleInside front cover National forewordii 1Scope3 2Normative references3 3Required supplementary information3 4Apparatus3 5Sampling4 6Test panels4 7Procedure5 8Precision5 9Test report5 Annex A (normative) Required supplementary information6 Annex B (informative) Procedure found
8、 to be convenient for manufacture and re-tipping of scratch test needles7 Annex ZA (normative) Normative references to international publications with their relevant European publications9 Figure 1 Scratch apparatus4 Figure B.1 Suitable shank for scratch test tip8 Licensed Copy: sheffieldun sheffiel
9、dun, na, Mon Nov 20 02:59:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1518:2001 ii BSI 03-2001 National foreword This British Standard is the official English language version of EN ISO 1518:2000. It is identical with ISO 1518:1992. The UK participation in its preparation was entrusted t
10、o Technical Committee STI/10, Test methods for paints, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which li
11、sts normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Ind
12、ex”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. 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 c
13、onfer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promu
14、lgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, the EN ISO foreword page, pages 1 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licens
15、ed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:59:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1518 March 2000 ICS 87.040 English version Paints and varnishes Scratch test (ISO 1518:1992) Peintures et vernis Essai de rayure (ISO 1518:199
16、2) Beschichtungsstoffe Ritzprfung (ISO 1518:1992) This European Standard was approved by CEN on 18 February 2000. 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 a
17、lteration. 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 versions (English, French, German). A version in any other language made by tr
18、anslation 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Irelan
19、d, 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, B-1050 Brussels 2000 CEN All rights of exploitation in
20、 any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1518:2000 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:59:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 1518:2000 BSI 03-2001 Foreword The text of the International Standard from Technical C
21、ommittee ISO/TC 35, Paints and varnishes, of the International Organization for Standardization (ISO) has been taken over as a European Standard by 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 nat
22、ional standard, either by publication of an identical text or by endorsement, at the latest by September 2000, and conflicting national standards shall be withdrawn at the latest by September 2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followi
23、ng countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. NOTE Normative references to International S
24、tandards are listed in Annex ZA (normative). Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:59:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 1518:2000 BSI 03-2001 3 1 Scope 1.1 This International Standard is one of a series of standards dealing with the sampling and testing of pain
25、ts, varnishes and related products. It specifies a test method for determining under defined conditions the resistance of a single coating or a multi-coat system of paint, varnish or related product to penetration by scratching with a hemispherically tipped needle. Penetration of the needle is to th
26、e substrate, except in the case of a multi-coat system, where the penetration of the needle may be either to the substrate or to an intermediate coat. 1.2 The method is intended for application as follows: a) either as a pass/fail test, by testing with a single specified load applied to the needle t
27、o assess compliance with a particular specification; b) or by applying increasing loads to the needle to determine the minimum load at which the coating is penetrated. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of th
28、is International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicate
29、d below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 1512:1991, Paints and varnishes Sampling of products in liquid or paste form. ISO 1513:1), Paints and varnishes Examination and preparation of samples for testing. ISO 1514:2), Paints and varnishes Sta
30、ndard panels for testing. ISO 2808:1991, Paints and varnishes Determination of film thickness. ISO 3270:1984, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing. 3 Required supplementary information For any particular application, the test method sp
31、ecified in this International Standard needs to be completed by supplementary information. The items of supplementary information are given in Annex A. 4 Apparatus 4.1 Scratch apparatus, the principle of which is illustrated in Figure 1; other arrangements which give a similar performance can be use
32、d, however. This apparatus consists essentially of a horizontally sliding test panel holder (A) driven by a constant-speed motor (B) at a rate of 30 mm/s to 40 mm/s beneath the point of a scratching needle (C), which is perpendicular to the test panel. The needle is fixed in a chuck, directly above
33、which is a holder capable of carrying weights up to a mass of 2 kg. The maximum load for which the apparatus is designed shall be marked on the test apparatus. The apparatus is adjusted so that the needle comes smoothly into contact with the film, i.e. before the stop (D) reaches the bottom of the s
34、loping ramp, to form a straight scratch not less than 60 mm in length. A ramp with an angle of 10? to 15? to the horizontal has been found to be satisfactory. The panel holder can be designed to allow a lateral movement of test pieces so that more than one scratch test can be carried out on the same
35、 test piece. NOTE 1Apparatus is now becoming available which will permit a scratch test to be conducted under continuously increasing load. 4.2 Indicating device, based on electrical contact between the needle and the metallic substrate to show when the paint film has been penetrated. NOTE 2This dev
36、ice is not suitable for paints containing electrically conducting pigments, or if the substrate is non-metallic, or if penetration to an intermediate non-conducting coat is required. 4.3 Needle, having a hard hemispherical tip of 1 mm diameter. The hemispherical tip shall be firmly attached and the
37、exposed part shall be free from any contaminants. NOTE 3Details about the tip and the needle are given in Annex B. 1)To be published. (Revision of ISO 1513:1980) 2)To be published. (Revision of ISO 1514:1984) Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:59:58 GMT+00:00 2006, Uncontrolle
38、d Copy, (c) BSI EN ISO 1518:2000 4 BSI 03-2001 5 Sampling Take a representative sample of the product to be tested (or of each product in the case of a multi-coat system), as described in ISO 1512. Examine and prepare each sample for testing, as described in ISO 1513. 6 Test panels 6.1 Substrate Unl
39、ess otherwise agreed, the substrate shall comply with the requirements of ISO 1514 for burnished tinplate, burnished steel or hard aluminium prepared by acid chromating. The test panels may be cut to fit the apparatus after coating the substrate and drying, provided no distortion occurs. 6.2 Prepara
40、tion and coating Unless otherwise specified, prepare each test panel in accordance with ISO 1514 and then coat it by the specified method with the product or system under test. If the product under test is applied by brushing, any brush marks shall be parallel to the direction of the scratch on the
41、panel. NOTE 4Poorer precision is often obtained if the coating has been applied by brush. 6.3 Drying and conditioning Dry (or stove) and age each coated test panel for the specified time and under the specified conditions. Then condition the coated panels at (23 ? 2) ?C and a relative humidity of (5
42、0 ? 5)%, unless otherwise agreed (see also ISO 3270), for a minimum period of 16 h. Carry out the test procedure as soon as possible. 6.4 Thickness of coating Determine the thickness, in micrometres, of the dried coating by one of the procedures specified in ISO 2808. Figure 1 Scratch apparatus Lice
43、nsed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:59:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 1518:2000 BSI 03-2001 5 7 Procedure 7.1 Test conditions Carry out the test at (23 2) ?C and a relative humidity of (50 5)%, unless otherwise agreed (see also ISO 3270). Conduct the test on a
44、 bench free from vibrations. 7.2 Procedure for a single specified load (“pass/fail” test) 7.2.1 Examine a needle (4.3) under ? 30 magnification to check that the hard tip is smooth, hemispherical and free from contamination. 7.2.2 Fix the needle in the chuck so that, when in position on the test pan
45、el, the needle will be perpendicular to the panel holder. Balance the needle holder arm by means of the adjustable counterweight. Ensure that the indicating device (4.2), if used, is operational by contacting the needle with the panel holder. 7.2.3 Clamp the test panel, with the coating under test u
46、ppermost, to the panel holder of the apparatus, with the longer side of the panel parallel to the direction in which the scratch will be made. 7.2.4 Place weights on the holder above the needle to obtain the specified load. 7.2.5 Start the motor of the apparatus and allow the scratch to be made on t
47、he coating. Observe the indicating device during the test, if appropriate, to determine whether electrical contact between the needle and the panel occurs. 7.2.6 Remove the panel and examine the scratch to see if the coating has been penetrated to the extent specified. If, by agreement between the i
48、nterested parties, the scratch is observed under suitable magnification, state the degree of magnification in the test report. 7.2.7 The sequence of operations shall be carried out three times on each of two test panels. If on none of the six test surfaces the coating has been penetrated beyond the
49、performance required under the specified conditions, report the result as “pass”. If the coating has been penetrated beyond the performance required on one or more of the six test surfaces, report the result as “fail”. 7.3 Procedure for determination of minimum load to cause penetration Carry out the procedure given in 7.2.1, 7.2.2, 7.2.3, 7.2.4, 7.2.5 and 7.2.6, using a different part of the test panel for each scratch, starting at a load somewhat less than that expected to cause penetration of the coating and successively increasing th
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