1、BSI Standards PublicationBS EN ISO 4628-2:2016Paints and varnishes Evaluation of degradation ofcoatings Designation ofquantity and size of defects,and of intensity of uniformchanges in appearancePart 2: Assessment of degree of blisteringBS EN ISO 4628-2:2016 BRITISH STANDARDNational forewordThis Bri
2、tish Standard is the UK implementation of EN ISO4628-2:2016. It supersedes BS EN ISO 4628-2:2003 which iswithdrawn. 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 requ
3、est to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 86609 8ICS 87.040Compliance with a British Stand
4、ard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards 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 EN IS
5、O 4628-2 February 2016 ICS 87.040 Supersedes EN ISO 4628-2:2003English 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 2: Assessment of degree of blistering (ISO 4628-2:2016)
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 2: valuation du degr de cloquage (ISO 4628-2:2016) Beschichtungsstoffe - Beurteilung von Beschichtungsschden - Bewertun
7、g der Menge und der Gre von Schden und der Intensitt von gleichmigen Vernderungen im Aussehen - Teil 2: Bewertung des Blasengrades (ISO 4628-2:2016) This European Standard was approved by CEN on 19 December 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipula
8、te 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 European Sta
9、ndard 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 the na
10、tional 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, Romania, S
11、lovakia, 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 any m
12、eans reserved worldwide for CEN national Members. Ref. No. EN ISO 4628-2:2016 EBS EN ISO 4628-2:2016EN ISO 4628-2:2016 (E) 3 European foreword This document (EN ISO 4628-2:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with Technical Committee CEN/TC
13、 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 lates
14、t 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 4628-2:2003. According to the CEN-CE
15、NELEC 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, Hungary,
16、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 4628-2:2016 has been approved by CEN as EN ISO 4628-2:2016 without any modi
17、fication. BS EN ISO 4628-2:2016ISO 4628-2:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Assessment . 15 Expression of results 26 Test report . 2Annex A (normative) Calibration images 7Annex B (informative) Correlation between ISO 4628-2 and ASTM D 714 rating syste
18、ms .12Bibliography .13 ISO 2016 All rights reserved iiiContents PageBS EN ISO 4628-2:2016ISO 4628-2:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is nor
19、mally carried out through ISO 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 organizations, governmental and non-governmental, in liaison with ISO, also take part in
20、the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical 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 th
21、e different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in 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 docu
22、ment may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. 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.or
23、g/patents). Any trade name used in this document is information given for the convenience of users and does not constitute 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 p
24、rinciples in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee 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 s
25、econd edition (ISO 4628-2:2003), which has been technically revised with the following changes:a) a normative reference to ISO 13076 for illumination for the assessment has been added;b) a note concerning visibility of S1 size of blisters has been added.ISO 4628 consists of the following parts, unde
26、r 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 introduction and designation system Part 2: Assessment of degree of blistering Part 3: Assessment of degree o
27、f 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 velvet method Part 8: Assessment of degree of delamination and corrosion around a scribe or other artificial
28、defect Part 10: Assessment of filiform corrosioniv ISO 2016 All rights reservedBS EN ISO 4628-2:2016INTERNATIONAL STANDARD ISO 4628-2:2016(E)Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part
29、2: Assessment of degree of blistering1 ScopeThis part of ISO 4628 specifies a method for assessing the degree of blistering of coatings by comparison with pictorial standards.The pictorial standards provided in this part of ISO 4628 illustrate blisters in the sizes 2, 3, 4, and 5, and each size in t
30、he quantities (densities) 2, 3, 4, and 5.ISO 4628-1 defines 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
31、 by ageing and weathering, and for uniform changes such 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 app
32、lies. For undated references, the latest edition of the 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.
33、3.1degree of blisteringrating characterizing blisters in a coating in terms of quantity (density) and size4 AssessmentAssess the quantity and size of the blisters in a coating by means of the pictures given in Figure 1 to Figure 4.NOTE The S1 size of blisters is not visible with normal corrected vis
34、ion but only with 10 magnification.Where the area to be examined exhibits blisters of varying size, quote as the size rating that of the blisters which are typical of the test area.Carry out the assessment under good illumination, as specified in ISO 13076.If the assessment is to be done using an op
35、tical imaging system, calibrate the system using the images given in Annex A. ISO 2016 All rights reserved 1BS EN ISO 4628-2:2016ISO 4628-2:2016(E)5 Expression of resultsExpress the ratings for the quantity (density) and size of the blisters as given in Figure 1 to Figure 4, together with the approx
36、imate dimensions of the area concerned, or its portion of the total area, expressed as a percentage.For example, if the coating is assessed as having blisters quantity 2, size 2, i.e. matching Figure 1 a), it shall be reported as blistering; degree of blistering 2(S2).6 Test reportThe test report sh
37、all 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 4628-2;c) the type of surface examined, its size and, if appropriate, its location;d) the result of the evaluation as indicated in Clause 5;e) an
38、 indication of the illumination under which the assessment was carried out;f) any unusual features (anomalies) noted during the assessment;g) the date of the examination.2 ISO 2016 All rights reservedBS EN ISO 4628-2:2016ISO 4628-2:2016(E)a) Quantity (density) 2 2(S2) b) Quantity (density) 3 3(S2)c)
39、 Quantity (density) 4 4(S2) d) Quantity (density) 5 5(S2)Figure 1 Blisters of size 2 ISO 2016 All rights reserved 3BS EN ISO 4628-2:2016ISO 4628-2:2016(E)a) Quantity (density) 2 2(S3) b) Quantity (density) 3 3(S3)c) Quantity (density) 4 4(S3) d) Quantity (density) 5 5(S3)Figure 2 Blisters of size 34
40、 ISO 2016 All rights reservedBS EN ISO 4628-2:2016ISO 4628-2:2016(E)a) Quantity (density) 2 2(S4) b) Quantity (density) 3 3(S4)c) Quantity (density) 4 4(S4) d) Quantity (density) 5 5(S4)Figure 3 Blisters of size 4 ISO 2016 All rights reserved 5BS EN ISO 4628-2:2016ISO 4628-2:2016(E)a) Quantity (dens
41、ity) 2 2(S5) b) Quantity (density) 3 3(S5)c) Quantity (density) 4 4(S5) d) Quantity (density) 5 5(S5)Figure 4 Blisters of size 56 ISO 2016 All rights reservedBS EN ISO 4628-2:2016ISO 4628-2:2016(E)Annex A (normative) Calibration imagesIf the assessment is to be done using an optical imaging system,
42、use the images given in Figure A.1 to Figure A.4 to calibrate the imaging system. ISO 2016 All rights reserved 7BS EN ISO 4628-2:2016ISO 4628-2:2016(E)a) Quantity (density) 2 2(S2) b) Quantity (density) 3 3(S2)c) Quantity (density) 4 4(S2 d) Quantity (density) 5 5(S2)Figure A.1 Blisters of size 28 I
43、SO 2016 All rights reservedBS EN ISO 4628-2:2016ISO 4628-2:2016(E)a) Quantity (density) 2 2(S3) b) Quantity (density) 3 3(S3)c) Quantity (density) 4 4(S3) d) Quantity (density) 5 5(S3)Figure A.2 Blisters of size 3 ISO 2016 All rights reserved 9BS EN ISO 4628-2:2016ISO 4628-2:2016(E)a) Quantity (dens
44、ity) 2 2(S4) b) Quantity (density) 3 3(S4)c) Quantity (density) 4 4(S4) d) Quantity (density) 5 5(S4)Figure A.3 Blisters of size 410 ISO 2016 All rights reservedBS EN ISO 4628-2:2016ISO 4628-2:2016(E)a) Quantity (density) 2 2(S5) b) Quantity (density) 3 3(S5)c) Quantity (density) 4 4(S5) d) Quantity
45、 (density) 5 5(S5)Figure A.4 Blisters of size 5 ISO 2016 All rights reserved 11BS EN ISO 4628-2:2016ISO 4628-2:2016(E)Annex B (informative) Correlation between ISO 4628-2 and ASTM D 714 rating systemsQuantity (density) SizeASTM ISO ASTM ISONoneFewMediumMedium-denseDense01234586421234512 ISO 2016 All
46、 rights reservedBS EN ISO 4628-2:2016ISO 4628-2:2016(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 system2 ASTM D714, S
47、tandard Test Method for Evaluating Degree of Blistering of Paints ISO 2016 All rights reserved 13This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.B
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