ISO-2409-1992.pdf
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1、IS0 2409 92 48519U3 OCLOCI93 708 W I N TE R NAT I O NA L STANDARD IS0 2409 Second edition 1992-08-1 5 Paints and varnishes - Cross-cut test Peintures et vernis - Essai de quadrillage Reference number IS0 2409: 1992( E) Copyright International Organization for Standardization Provided by IHS under li
2、cense with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 21:47:01 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 2409:1992(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standar
3、ds bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organi
4、zations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are c
5、irculated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75% of the member bodies casting a vote. International Standard IS0 2409 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Sub-Committee SC 9, General test methods f
6、or paints and varnishes. This second edition cancels and replaces the first edition (IS0 2409:1972), which has been technically revised. The main technical changes in this second edition are that, in the procedure, the spacing of the cuts is prescribed, depending on the thickness of the coating and
7、the type of substrate, and that for hard substrates application of ad- hesive tape has been added. Annex A forms an integral part of this International Standard. 8 IS0 1992 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mecha
8、nical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 CH-121 1 Genve 20 Switzerland Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license
9、 with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 21:47:01 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 2409 92 4851903 0510095 580 INTERNATIONAL STANDARD IS0 2409:1992( E) Paints and varnishes - Cross-cut test 1 Scope 1.1 This Inter
10、national Standard is one of a series of standards dealing with the sampling and testing of paints, varnishes and related products. It specifies a test method for assessing the resistance of paint coatings to separation from substrates when a right-angle lattice pattern is cut into the coating, penet
11、rating through to the substrate. The property measured by this empirical test procedure depends, among other factors, on the adhesion of the coating to either the preceding coat or the substrate. This procedure is not to be regarded, however, as a means of measuring adhesion. Where a measurement of
12、adhesion is required, at- tention is drawn to the method described in IS0 4624:1978, Paints and varnishes - Pull-off test for adhesion. NOTE 1 Although the test is primarily intended for use in the laboratory, the test is also suitable for field testing. 1.2 The method described may be applied eithe
13、r as a pasclfail test or, where circumstances are ap- propriate, as a six-step classification test (see 8.3). When applied to a multi-coat system, assessment of the resistance to separation of individual layers of the coating from each other may be made. 1.3 The test may be carried out on finished o
14、bjects and/or on specially prepared test specimens. Although the method is applicable to paint on hard (steel) and soft (wood and plaster) substrates, these different substrates need a different test procedure (see clause 7). The method is not suitable for coatings of total thickness greater than 25
15、0 pn or for textured coatings. 1) To be published. (Revision of IS0 1513:1980) 2) To be published. (Revision of IS0 1514:1984) NOTES 2 Coatings with tested by means of a single cross-cut. 3 The method, when applied to coatings designed to give a rough patterned surface, will give results which will
16、show too much variation. total thickness of over 250 lim may be 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All stan- da
17、rds are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of ap- plying the most recent editions of the standards in- dicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. I
18、S0 1512:1991, Paints and varnishes - Sampling of products in liquid or paste form. IS0 151 3:-“, Paints and varnishes - Examination and preparation of samples for testing. IS0 1514:-2), Paints and varnishes - Standard pan- els for testing. IS0 2808:1991, Paints and varnishes - Determination of film
19、thickness. IS0 3270:1984, Paints and varnishes alJd their raw materials - Temperatures and humidities for con- ditioning and testing. IEC 454-2:1974, Specifications for pressure-sensitive adhesive tapes for electrical purposes - Part 2: Methods of test. 1 Copyright International Organization for Sta
20、ndardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/23/2007 21:47:01 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 2YO9 92 4853903 0530096 417 = IS0 2409:1992(E) 3 Required supplementary information 5 S
21、ampling For any particular application, the test method Take a representative sample of the product to be specified in this International Standard needs to be completed by supplementary information. The items of supplementary information are given in annex A. tested, as described in IS0 1512. Examin
22、e and prepare each sample for testing, as described in IS0 1513. 4 Apparatus 6 Test panels Ordinary laboratory apparatus, together with the followi ng : 6.1 Substrate Unless otherwise agreed, select the substrate from one of those described in IS0 1514. The panels shall be plane and free from distor
23、tion. The dimensions shall be such as to allow the test to 4.1 Cutting tool. It is particularly important to ensure that the cutting tool has a defined shape and that the cutting edges are in good condition. be carried out at three different positions being not less than mm from each other and from
24、an edge of the panel. 4.1.1 Suitable tools are listed below and shown in figures 1 a) and 1 b): a) single-blade cutting tool with 20“ to 30“ edge and other dimensions as specified in figure 1 a); Where panels consist of a relatively soff material such as wood, the minimum thickness shall be 10 mm. W
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