1、BSI Standards PublicationBS EN ISO 4628-5:2016Paints and varnishes Evaluation of degradation ofcoatings Designation ofquantity and size of defects,and of intensity of uniformchanges in appearancePart 5: Assessment of degree of flakingBS EN ISO 4628-5:2016 BRITISH STANDARDNational forewordThis Britis
2、h Standard is the UK implementation of EN ISO 4628-5:2016. It supersedes BS EN ISO 4628-5:2003 which iswithdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods for paints.A list of organizations represented on this committee can be obtained on reque
3、st to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 86612 8 ICS 87.040 Compliance with a British St
4、andard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 February 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
5、EN ISO 4628-5 February 2016 ICS 87.040 Supersedes EN ISO 4628-5:2003English Version Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 5: Assessment of degree of flaking (ISO 4628-5:2016
6、) Peintures et vernis - valuation de la dgradation des revtements - Dsignation de la quantit et de la dimension des dfauts, et de lintensit des changements uniformes daspect - Partie 5: valuation du degr dcaillage (ISO 4628-5:2016) Beschichtungsstoffe - Beurteilung von Beschichtungsschden - Bewertun
7、g der Menge und der Gre von Schden und der Intensitt von gleichmigen Vernderungen im Aussehen - Teil 5: Bewertung des Abbltterungsgrades (ISO 4628-5:2016) This European Standard was approved by CEN on 19 December 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which s
8、tipulate 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 Europe
9、an 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
10、the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Roma
11、nia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by
12、 any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4628-5:2016 EBS EN ISO 4628-5:2016EN ISO 4628-5:2016 (E) 3 European foreword This document (EN ISO 4628-5:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with Technical Committee
13、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 August 2016, and conflicting national standards shall be withdrawn at the
14、 latest by August 2016. 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. This document supersedes EN ISO 4628-5:2003. According to the
15、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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hun
16、gary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 4628-5:2016 has been approved by CEN as EN ISO 4628-5:2016 without an
17、y modification. BS EN ISO 4628-5:2016ISO 4628-5:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Assessment . 15 Expression of results 26 Test report . 2Bibliography 6 ISO 2016 All rights reserved iiiContents PageBS EN ISO 4628-5:2016ISO 4628-5:2016(E)ForewordISO (th
18、e International Organization for Standardization) 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 committ
19、ee has been established has the right 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 electrotechn
20、ical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted i
21、n accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). 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.
22、 Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute
23、an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee
24、 responsible for this document is 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 4628-5:2003), which has been technically revised with the following changes:a) a normative reference to
25、ISO 13076 for illumination for the assessment has been added.ISO 4628 consists of the following parts, under the general title Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance: Part 1: General in
26、troduction and designation system Part 2: Assessment of degree of blistering Part 3: Assessment of degree of rusting Part 4: Assessment of degree of cracking Part 5: Assessment of degree of flaking Part 6: Assessment of degree of chalking by tape method Part 7: Assessment of degree of chalking by ve
27、lvet method Part 8: Assessment of degree of delamination and corrosion around a scribe or other artificial defect Part 10: Assessment of degree of filiform corrosioniv ISO 2016 All rights reservedBS EN ISO 4628-5:2016INTERNATIONAL STANDARD ISO 4628-5:2016(E)Paints and varnishes Evaluation of degrada
28、tion of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 5: Assessment of degree of flaking1 ScopeThis part of ISO 4628 specifies a method for assessing the degree of flaking of coatings by comparison with pictorial standards.ISO 4628-1 def
29、ines the system used for designating the quantity and size of defects and the intensity of changes in appearance of coatings and outlines the general principles of the system. This system is intended to be used, in particular, for defects caused by ageing and weathering, and for uniform changes such
30、 as colour changes, for example yellowing.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the
31、 referenced document (including any amendments) applies.ISO 13076, Paints and varnishes Lighting and procedure for visual assessments of coatings3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1degree of flakingrating characterizing flaked areas
32、in a coating in terms of quantity, size, and depth4 AssessmentAssess the quantity of flaking by reference to Table 1 and using as examples Figure 1 or Figure 2, depending on the type of flaking.NOTE Figure 1 shows flaking without preferential direction and Figure 2 shows flaking in a preferential di
33、rection due to anisotropy of the substrate. ISO 2016 All rights reserved 1BS EN ISO 4628-5:2016ISO 4628-5:2016(E)Table 1 Rating scheme for designating the quantity of flakingRating Flaked area %0 01 0,12 0,33 14 35 15Assess the average size of the individual areas exposed by flaking in accordance wi
34、th Table 2.Table 2 Rating scheme for designating the size of areas exposed by flakingRating Size of flaking0 not visible under 10 magnification1 up to 1 mm2 up to 3 mm3 up to 10 mm4 up to 30 mm5 larger than 30 mmWhere a test area exhibits flaked areas of various sizes, quote as the size rating that
35、of the largest areas which are numerous enough to be typical of the test area.If possible, indicate the depth of flaking by reference to the level in the coating system where failure occurs. A distinction is made between two main types of failure by flaking:a) coat(s) flaking from underlying coat;b)
36、 the whole coating system flaking from substrate.Carry out the assessment under good illumination, as specified in ISO 13076.5 Expression of resultsExpress the numerical ratings of the quantity and size of flaking, where possible together with the depth of flaking (a or b), shown in Figures 1 and 2
37、together with the approximate dimensions of the area concerned, or its proportion to the total area, expressed as a percentage.For example, for quantity 3, size 2, with the whole coating system flaking from the substrate, report the result as flaking; degree of flaking 3(S2)b.If necessary, the asses
38、sment may be amplified in words.6 Test reportThe test report shall contain at least the following information:a) all details necessary to identify the coating examined;b) a reference to this part of ISO 4628, i.e. ISO 4628-5;2 ISO 2016 All rights reservedBS EN ISO 4628-5:2016ISO 4628-5:2016(E)c) the
39、 type of surface examined, its size and, if appropriate, its location;d) the result of the assessment in accordance with Clause 5;e) an indication of the illumination under which the assessment was carried out;f) any unusual features (anomalies) observed during the assessment;g) the date of the exam
40、ination. ISO 2016 All rights reserved 3BS EN ISO 4628-5:2016ISO 4628-5:2016(E)a) Quantity (density) 1 b) Quantity (density) 2 c) Quantity (density) 3d) Quantity (density) 4 e) Quantity (density) 5Figure 1 Flaking without preferential direction (panels of 100 cm2to 200 cm2)4 ISO 2016 All rights reser
41、vedBS EN ISO 4628-5:2016ISO 4628-5:2016(E)a) Quantity (density) 1 b) Quantity (density) 2 c) Quantity (density) 3d) Quantity (density) 4 e) Quantity (density) 5Figure 2 Flaking in a preferential direction (panels of 100 cm2to 200 cm2) ISO 2016 All rights reserved 5BS EN ISO 4628-5:2016ISO 4628-5:201
42、6(E)Bibliography1 ISO 4628-1, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 1: General introduction and designation system6 ISO 2016 All rights reservedBS EN ISO 4628-5:2016This page deli
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