1、BSI Standards PublicationBS EN ISO 11997-2:2013Paints and varnishes Determination of resistance tocyclic corrosion conditionsPart 2: Wet (salt fog)/dry/humidity/UV light(ISO 11997-2:2013)BS EN ISO 11997-2:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO1
2、1997-2:2013. It supersedes BS EN ISO 11997-2:2006 which iswithdrawn.BSI, a member of CEN, is obliged to publish BS EN ISO 11997-2 as aBritish Standard. However, attention is drawn to the fact that theUK committee voted against its approval as a standard in CEN andISO. The UK committee have agreed th
3、at clause 8.4 should havebeen specified further with respect to the test cycle (durations oflight and dark periods). The committee are of the opinion thatthe informative Annex A should have been omitted to avoid anymisunderstanding regarding alternative test procedures. Further, theUK committee feel
4、 that the method referenced in A.3.3.1 is not acyclic corrosion test and is therefore outside of the scope of the ISO11997 series. For these reasons, a negative vote was submitted.The UK participation in its preparation was entrusted to TechnicalCommittee STI/10, Test methods for paints.A list of or
5、ganizations represented on this committee can beobtained on request 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 2014. Published by BSI StandardsLimited 201
6、4ISBN 978 0 580 71910 3ICS 87.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2014.Amendments issued since publicationDate Text affectedEUROPEAN STAN
7、DARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11997-2 September 2013 ICS 87.040 Supersedes EN ISO 11997-2:2006English Version Paints and varnishes - Determination of resistance to cyclic corrosion conditions - Part 2: Wet (salt fog)/dry/humidity/UV light (ISO 11997-2:2013) Peintures et vernis - Dtermi
8、nation de la rsistance aux conditions de corrosion cyclique - Partie 2: Brouillard salin/scheresse/humidit/lumire UV (ISO 11997-2:2013)Beschichtungsstoffe - Bestimmung der Bestndigkeit bei zyklischen Korrosionsbedingungen - Teil 2: Nass (Salzsprhnebel)/trocken/Feuchte/UV-Strahlung (ISO 11997-2:2013)
9、 This European Standard was approved by CEN on 17 August 2013. 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 alteration. Up-to-date lists and bibliographical ref
10、erences concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a C
11、EN 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 national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedon
12、ia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPI
13、SCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11997-2:2013: EBS EN ISO 11997-2:2013EN ISO 11997-2:2013 (E) 3 Foreword This documen
14、t (EN ISO 11997-2:2013) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with 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 pu
15、blication of an identical text or by endorsement, at the latest by March 2014, and conflicting national standards shall be withdrawn at the latest by March 2014. 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 s
16、hall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 11997-2:2006. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium
17、, 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, Slovakia, Slovenia, Spain, Sweden, Switzerla
18、nd, Turkey and the United Kingdom. Endorsement notice The text of ISO 11997-2:2013 has been approved by CEN as EN ISO 11997-2:2013 without any modification. BS EN ISO 11997-2:2013ISO 11997-2:2013(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative referenc
19、es 13 Principle 24 Salt fog test solution 25 Apparatus . 26 Sampling 37 Test panels 37.1 Material and dimensions 37.2 Preparation and coating of panels . 37.3 Drying and conditioning . 37.4 Thickness of coating . 37.5 Scribing of panels 38 Procedure. 39 Examination of test panels . 410 Precision . 4
20、11 Test report . 4Annex A (informative) Alternative test procedures 6Bibliography 8BS EN ISO 11997-2:2013ISO 11997-2:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International
21、 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-governmental, in liaison with ISO, a
22、lso 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 in the ISO/IEC Directives, Part 1.
23、 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. www.iso.org/directivesAttention is drawn to the possibility that some of the elements of
24、 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 list of patent declarations received. www.
25、iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes.This second ed
26、ition cancels and replaces the first edition (ISO 11997-2:2000), which has been technically revised. The main technical changes are:a) alternative test procedures have been added as an informative annex;b) the supplementary test conditions (formerly Annex A) have been incorporated in the test report
27、.ISO 11997 consists of the following parts, under the general title Paints and varnishes Determination of resistance to cyclic corrosion conditions: Part 1: Wet(salt fog)/dry/humidity Part 2: Wet (salt fog)/dry/humidity/UV lightThis part of ISO 11997 is equivalent to ASTM D 5894, Standard Practice f
28、or Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating Exposures in a Fog/Dry Cabinet and a UV/Condensation Cabinet).iv ISO 2013 All rights reservedBS EN ISO 11997-2:2013ISO 11997-2:2013(E)IntroductionCoatings of paints, varnishes and similar materials are exposed to cyclic wet and dry corros
29、ion and UV exposure conditions using specified salt solutions in cabinets in order to simulate, in the laboratory, processes occurring in aggressive outdoor conditions. Generally, valid correlations between such outdoor weathering and laboratory testing cannot be expected because of the large number
30、 of factors influencing the breakdown process. Certain relationships can only be expected if the effect on the coating of the important parameters (e.g. nature of the pollutant, spectral distribution of the incident irradiance in the relevant photochemical region, temperature of the specimen, type a
31、nd cycle of wetting and relative humidity) is known. In contrast to outdoor weathering, laboratory testing in a cabinet is performed with a reduced number of variables, which can be controlled and therefore the effects are more reproducible.The method described can give a means of checking that the
32、quality of a paint or paint system is being maintained. The method is intended to provide a more realistic simulation of these factors than is found in traditional tests with continuous exposure to a static set of corrosive conditions. The method has been found to be useful in comparing the cyclic s
33、alt spray resistance of different coatings. It is most useful in providing relevant ratings for a series of coated panels exhibiting significant differences in cyclic salt spray/UV exposure resistance tested at the same time and to the same test cycle.The cycle specified in this part of ISO 11997 ha
34、s been found useful for air-drying industrial maintenance coatings on steel; other cycles may be used as required. ISO 2013 All rights reserved vBS EN ISO 11997-2:2013BS EN ISO 11997-2:2013Paints and varnishes Determination of resistance to cyclic corrosion conditions Part 2: Wet (salt fog)/dry/humi
35、dity/UV light1 ScopeThis part of ISO 11997 specifies a test method of determining resistance of coatings to a defined cycle of wet (salt fog)/dry/humidity/UV light conditions using a specified solution.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in
36、this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1513, Paints and varnishes Examination and preparation of test samplesISO 1514,
37、Paints and varnishes Standard panels for testingISO 2808, Paints and varnishes Determination of film thicknessISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testingISO 3696, Water for analytical laboratory use Specification and test methodsISO
38、 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 systemISO 4628-2, Paints and varnishes Evaluation of degradation of coatings Designation of
39、quantity and size of defects, and of intensity of uniform changes in appearance Part 2: Assessment of degree of blisteringISO 4628-3, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 3: Asse
40、ssment of degree of rustingISO 4628-4, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 4: Assessment of degree of crackingISO 4628-5, Paints and varnishes Evaluation of degradation of coati
41、ngs Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 5: Assessment of degree of flakingISO 4628-6, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appeara
42、nce Part 6: Assessment of degree of chalking by tape methodISO 4628-8, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 8: Assessment of degree of delamination and corrosion around a scribe
43、or other artificial defectISO 4628-10, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 10: Assessment of degree of filiform corrosionINTERNATIONAL STANDARD ISO 11997-2:2013(E) ISO 2013 All
44、rights reserved 1BS EN ISO 11997-2:2013ISO 11997-2:2013(E)ISO 11997-1:2005, Paints and varnishes Determination of resistance to cyclic corrosion conditions Part 1: Wet (salt fog)/dry/humidityISO 15528, Paints, varnishes and raw materials for paints and varnishes SamplingISO 16474-3:1), Paints and va
45、rnishes Methods of exposure to laboratory light sources Part 3: Fluorescent UV lampsISO 17872, Paints and varnishes Guidelines for the introduction of scribe marks through coatings on metallic panels for corrosion testing3 PrincipleA coated test panel is exposed to a cyclic wet (salt fog), drying, h
46、umidity and UV light test schedule and the effects of exposure are evaluated by criteria agreed in advance between the interested parties, these criteria usually being of a subjective nature.4 Salt fog test solution4.1 Prepare the spray solution by dissolving sodium chloride and ammonium sulfate in
47、water of grade 1 or grade 2 quality as defined in ISO 3696 to give a solution with c(NaCl) = (0,50 0,01) g/l and c(NH4)2SO4 = (3,50 0,01) g/l.4.2 The salts shall be white and comply with the purity requirements given in Table 1.Table 1 Purity of saltImpurity Maximum mass percentage of impurity% (cal
48、culated on the dry salt)Tot al 0,5Iodine 0,1Copper 0,001Nickel 0,0014.3 Filter the solution before placing it in the reservoir of the cabinet, in order to remove any solid matter which might block the apertures of the spraying device.5 ApparatusOrdinary laboratory apparatus and glassware, together w
49、ith the following:5.1 Artificial weathering cabinet, conforming to the requirements of ISO 16474-3, fitted with UVA 340 lamps and set to repeat a test cycle consisting of light (UV) at 60 C black panel temperature and condensation in the dark period at 50 C, unless otherwise specified. The cycle used is 4 h light (UV) and 4 h condensation.5.2 Cyclic corrosion cabinet, conforming to the requirements of ISO 11997-1.If the cabinet (5.1 or 5.2) has been used for a spray test, or
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