EN ISO 6270-1-2018 en Paints and varnishes - Determination of resistance to humidity - Part 1 Condensation (single-sided exposure).pdf

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1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Paints and varnishes - Determination of resistance to humidityPart 1: Condensation (single-sided exposure)BS EN ISO 6270-1:2018National forewordThis British Standard is the UK implementation of EN ISO 6270-1:2018. It is

2、 identical to ISO 6270-1:2017. It supersedes BS EN ISO 6270-1:2001, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods for paints.A list of organizations represented on this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 request to its secretary.This p

3、ublication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 94860 2ICS 87.040Compliance with a British Standard cannot confer immunit

4、y from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 6270-1:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN

5、ISO 6270-1January 2018ICS 87.040 Supersedes EN ISO 6270-1:2001EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN ISO 6270-1:2018: EAll rights of exploitation in any fo

6、rm and by any means reserved worldwide for CEN national MembersPaints and varnishes - Determination of resistance to humidity - Part 1: Condensation (single-sided exposure) (ISO 6270-1:2017)Peintures et vernis - Dtermination de la rsistance lhumidit - Partie 1: Condensation (exposition sur une seule

7、 face) (ISO 6270-1:2017)Beschichtungsstoffe - Bestimmung der Bestndigkeit gegen Feuchtigkeit - Teil 1: Kondensation (einseitige Beanspruchung) (ISO 6270-1:2017)This European Standard was approved by CEN on 30 October 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations whic

8、h 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 Euro

9、pean 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, Rom

11、ania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 6270-1:2018 (E)European forewordThis document (EN ISO 6270-1:2018) has been prepared by Technical Committee ISO/TC 35/SC 9 “General test methods for paints and varnishes“ in collaboration wi

12、th 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 July 2018, and conflicting national standards shall

13、 be withdrawn at the latest by July 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes EN ISO 6270-1:2001.According to the

14、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

15、gary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 6270-1:2017 has been approved by CEN as EN ISO 6270-1:2018 with

16、out any modification.2BS EN ISO 6270-1:2018ISO 6270-1:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Limitations 15 Principle 26 Apparatus . 26.1 Construction of the apparatus . 26.2 Water bath 26.3 Installation of the apparatus . 37 Test specimen 48

17、Procedure. 49 Evaluation 410 Precision . 411 Test report . 4Bibliography 6 ISO 2017 All rights reserved iiiContents PageBS EN ISO 6270-1:2018ISO 6270-1:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies).

18、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 committee has been established has the right to be represented on that committee. International organizations, governmental and non-g

19、overnmental, in liaison with ISO, also take part in 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

20、 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 in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the

21、 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. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO l

22、ist 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 an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions relat

23、ed to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, S

24、ubcommittee SC 9, General test methods for paints and varnishes.This second edition cancels and replaces the first edition (ISO 6270-1:1998), which has been technically revised.The main changes compared to the previous edition are as follows: the title has been changed; the terms and definitions cla

25、use has been added; a limitations clause concerning the use of other than standard test conditions has been added; the preparation of test specimens from liquid paints has been deleted, so only the exposure of coated specimens is described; the normative requirement on evaluation in accordance with

26、ISO 4628 has been deleted; information has been moved to the introduction, as it is in ISO 6270-2; the size of the test specimens has been changed; the requirement to use water of grade 3 purity in accordance with ISO 36961was deleted; a clause on installation of the apparatus has been added; the pr

27、ecision has been clarified; the normative references have been updated; the supplementary test conditions previously in Clause 4 and Annex A have been integrated in the test report, as appropriate, or deleted.A list of all the parts in the ISO 6270 series can be found on the ISO website.iv ISO 2017

28、All rights reservedBS EN ISO 6270-1:2018ISO 6270-1:2017(E)IntroductionThis document is intended to give consistent conditions and procedures for the conditioning of pre-prepared test specimens which are to be evaluated for defects, which may develop when they are subjected to humid ambient atmospher

29、es such as constant condensation-water atmospheres or alternating condensation-water atmospheres.The tests are designed to clarify the behaviour of the test specimens in humid ambient atmospheres, and to pinpoint any defects in the protection of the test specimens against corrosion. The testing of c

30、oatings in these atmospheres does not necessarily give lifetime prediction data.After conditioning, the test specimens are evaluated either in accordance with agreed documents, such as the appropriate part(s) of ISO 46282, or by procedures agreed between the interested parties. ISO 2017 All rights r

31、eserved vBS EN ISO 6270-1:2018This page deliberately left blankPaints and varnishes - Determination of resistance to humidity Part 1: Condensation (single-sided exposure)1 ScopeThis document specifies a method for determining the resistance of paint films, paint systems and related products to condi

32、tions of condensation in accordance with the requirements of coating or product specifications.The method is applicable to coatings, both on porous substrates such as wood, plaster and plasterboard and on non-porous substrates such as metal. It provides an indication of the performance likely to be

33、obtained under severe conditions of exposure where continuous condensation occurs on the surface.The procedure can reveal failures of the coating (including blistering, staining, softening, wrinkling and embrittlement) and deterioration of the substrate.NOTE The shape and preparation of the test spe

34、cimens, the duration of the test and the assessment of the test results are not covered by this document.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the

35、 edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testingISO 4618, Paints and varnishes Terms and definitions3 Terms

36、and definitionsFor the purposes of this document, the terms and definitions given in ISO 4618 apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available

37、at http:/www.iso.org/obp4 LimitationsTemperature and humidity are important parameters affecting test results. Deviations from the requirements specified can lead to results that are not comparable. However, the interested parties may agree upon alternative parameters and these parameters shall be r

38、eported.INTERNATIONAL STANDARD ISO 6270-1:2017(E) ISO 2017 All rights reserved 1BS EN ISO 6270-1:2018ISO 6270-1:2017(E)5 PrincipleA coated test specimen is exposed to continuous condensation, and the effects of the exposure are evaluated by criteria agreed in advance between the interested parties,

39、these criteria usually being of a subjective nature.6 Apparatus6.1 Construction of the apparatus6.1.1 The apparatus shall be constructed of chemically resistant materials, and consist essentially of an electrically heated water bath, designed so that the cover is formed by the blanking specimens (6.

40、1.3) or test specimens, the upper faces of which are exposed to the environment (6.2.1), such that gaps are minimized and condensation forms on the inner face of the test specimens.6.1.2 The top of the bath shall be designed so that the test specimens are held at the preferred angle of (60 5) to the

41、 horizontal to permit drainage of condensed water, and shall be such that water draining from one specimen does not come into contact with another. In any case, the angle of the specimens to the horizontal shall be between 15 and 75.NOTE When revising ISO 6270:1980 to ISO 6270-1:1998, the angle of t

42、he specimens to the horizontal was changed from (15 5) to (60 5), and the temperature of the air below the specimens was maintained at (38 2) C rather than at that of the water itself. Work has shown that the results do not differ substantially between the two sets of conditions.6.1.3 Suitable inert

43、 blanking specimens shall be provided for use in setting up the apparatus if the number of test specimens is insufficient to form a complete cover.6.2 Water bath6.2.1 The sides of the water bath shall be suitably insulated to ensure that the temperature in the air space above the water, when measure

44、d approximately 25 mm below the test specimens, is maintained at a uniform temperature of (38 2) C unless otherwise specified.Temperatures of (49 2) C and (60 2) C are recommended if (38 2) C is too low.6.2.2 The water shall be maintained at a constant level by means of an automatic control device.

45、If the device does not regulate the water level automatically, adjust the level of the water by regular addition of water.The use of ordinary tap water may cause calcification of the apparatus, so follow the instrument manufacturers instructions concerning the quality of the water used.An example of

46、 a climatic chamber is shown in Figure 1.2 ISO 2017 All rights reservedBS EN ISO 6270-1:2018ISO 6270-1:2017(E)1234567867Key1 base cabinet 5 moisture diffusion channel2 heater 6 air in3 dry off air duct 7 moisture out4 condensation on specimen 8 convection currentsFigure 1 Example of a climatic chamb

47、er6.3 Installation of the apparatusThe apparatus shall be installed in a room with an ambient atmosphere containing no corrosive constituents (e.g. it shall not be installed in a chemical laboratory), at a room temperature of (23 5) C and at a relative atmospheric humidity of 75 % max., in such a wa

48、y that it is protected against draughts and solar radiation. In the case of comparison tests, the ambient temperature in the installation room shall be the standard temperature of (23 2) C in accordance with ISO 3270. ISO 2017 All rights reserved 3BS EN ISO 6270-1:2018ISO 6270-1:2017(E)7 Test specim

49、enThe typical size of test specimens is 75 mm 150 mm or 100 mm 150 mm.8 Procedure8.1 Carry out the determination in duplicate, unless otherwise specified.8.2 Set up the apparatus with blanking specimens in position and allow the apparatus to come to equilibrium. When the conditions specified in 6.2.1 are attained, swiftly replace the blanking specimens with the test specimens so that the test surface faces the water.It is recommended that a control specimen of a paint with known durability be i