1、BRITISH STANDARDBS EN ISO 11997-1:2006Incorporating amendment no. 1 (renumbers BS ISO 11997-1:2005 as BS EN ISO 11997-1:2006)Paints and varnishes Determination of resistance to cyclic corrosion conditions Part 1: Wet (salt fog)/dry/humidityThis European Standard EN ISO 11997-1:2006 has the status of
2、 a British StandardICS 87.040g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 11997-1:2006This British Standard was published under the aut
3、hority of the Standards Policy and Strategy Committee on 18 April 2005 BSI 2007ISBN 0 580 45824 5National forewordThis British Standard was published by BSI. It is the UK implementation of EN ISO 11997-1:2006. It is identical to ISO 11997-1:2005. It supersedes BS 3900-F18:1998 which is withdrawn.The
4、 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 publication does not purport to include all the necessary provisions of a contract. Users a
5、re responsible for its correct application. Compliance with a British Standard cannot of itself confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date Comments16875 28 February 2007 Renumbers BS ISO 11997-1:2005 as BS EN ISO 11997-1:2006EUROPEAN STANDARDNORME EUROPEN
6、NEEUROPISCHE NORMEN ISO 11997-1February 2006ICS 87.040English VersionPaints and varnishes - Determination of resistance to cycliccorrosion conditions - Part 1: Wet (salt fog)/dry/humidity (ISO11997-1:2005)Peintures et vernis - Dtermination de la rsistance auxconditions de corrosion cyclique - Partie
7、 1: Brouillardsalin/scheresse/humidit (ISO 11997-1:2005)Beschichtungsstoffe - Bestimmung der Bestndigkeit beizyklischen Korrosionsbedingungen - Teil 1: Nass(Salzsprhnebel)/trocken/Feuchte (ISO 11997-1:2005)This European Standard was approved by CEN on 16 January 2006.CEN members are bound to comply
8、with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretar
9、iat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialve
10、rsions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Swede
11、n, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref.
12、No. EN ISO 11997-1:2006: EForeword According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingDenmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,Switzerland and United Kingdom. Endorsement notice The te
13、xt of ISO 11997-1:2005 has been approved by CEN as EN ISO 11997-1:2006 without any modifications.The text of ISO 11997-1:2005 has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 11997-
14、1:2006 by 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 August 2006, and conflicting national stan
15、dards shall be withdrawn at the latest by August 2006. Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, EN ISO 11997-1:2006Reference numberISO 11997-
16、1:2005(E)OSI 5002INTERNATIONAL STANDARD ISO11997-1Second edition2005-03-15Paints and varnishes Determination of resistance to cyclic corrosion conditions Part 1: Wet (salt fog)/dry/humidity Peintures et vernis Dtermination de la rsistance aux conditions de corrosion cyclique Partie 1: Brouillard sal
17、in/scheresse/humidit EN ISO 11997-1:2006ii I SO 5002 All irthgs ersedevr iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative references . 1 3 Principle . 2 4 Required supplementary information . 2 5 Salt fog test solution. 2 6 Apparatus. 3 7 Sampling 4 8 Test panels 4 9 Method of expos
18、ure of test panels 5 10 Operating conditions 5 11 Procedure. 5 12 Examination of test panels. 6 13 Precision 6 14 Test report 6 Annex A (normative) Required supplementary information 8 Annex B (informative) Factors to be considered in the design and construction of salt spray cabinets 9 Annex C (nor
19、mative) Cycle A 10 Annex D (normative) Cycle B 11 Annex E (normative) Cycle C 12 Annex F (normative) Cycle D. 13 EN ISO 11997-1:2006iv I SO 5002 All irthgs ersedevrForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bod
20、ies). 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
21、 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 electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives,
22、Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies cast
23、ing a vote. 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. ISO 11997-1 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommi
24、ttee SC 9, General test methods for paints and varnishes. This second edition cancels and replaces the first edition (ISO 11997-1:1998) (including Technical Corrigendum ISO 11997-1:1998/Cor.1:1998), in which cycle A has been revised and cycle D has been added to correlate with ISO 14993:2001, Corros
25、ion of metals and alloys Accelerated testing involving cyclic exposure to salt mist, “dry” and “wet” conditions. 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 Par
26、t 2: Wet (salt fog)/dry/humidity/UV light EN ISO 11997-1:2006I SO 5002 All irthgs ersedevr vIntroduction Coatings of paints, varnishes and similar materials are exposed to one of four cycles of wet and dry conditions using specified salt solutions in a cabinet in order to simulate, in the laboratory
27、, processes occurring in aggressive outdoor conditions, such as marine environments. Generally, correlation between such outdoor weathering and laboratory testing cannot be expected because of the large number of factors influencing the breakdown process. Correlation can only be expected if the effe
28、ct on the coating of important parameters (e.g. the nature of the pollutant, the spectral distribution of the incident irradiance in the relevant photochemical region, the temperature of the specimen, the type and cycle of wetting and relative humidity) is known. In contrast to outdoor weathering, l
29、aboratory 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 may also give a means of checking that the quality of a paint or paint system is being maintained. The method has been found t
30、o be useful in comparing the cyclic salt 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 resistance. The test cycles included in this part of ISO 11997 have been used success
31、fully, with documented evidence, in the industry for the assessment of performance. The cycles can be summarized as follows. Cycle A (see Annex C): This cycle is specified in Japanese Automobile Standards JASO M 609-91, Corrosion test method for automotive materials, and JASO M610-92, Cosmetic corro
32、sion test method for automotive parts. Cycle B (see Annex D): This is based on the VDA 621-415 cycle and is widely used in Europe. It has also been shown to give good correlation with natural weathering for thermosetting paints in vehicle corrosion. Cycle C (see Annex E): This cycle was developed in
33、 the UK for use with water-soluble and latex paint systems, and has been shown to give good correlation with natural weathering. Cycle D (see Annex F): This cycle is specified in Japanese Standard JIS K 5621-2003, Anticorrosive paint for general use. It is intended that other cycles will be added at
34、 later revisions of this part of ISO 11997, as they are developed for evaluating other paint types. ISO 11997-2 describes a method for determining the cyclic corrosion resistance of paints which includes UV exposure as part of the cycle. It has been found to give good correlation with natural weathe
35、ring for industrial maintenance coatings. EN ISO 11997-1:2006blankI SO 5002 All irthgs ersedevr 1Paints and varnishes Determination of resistance to cyclic corrosion conditions Part 1: Wet (salt fog)/dry/humidity 1 Scope This part of ISO 11997 describes a method for the determination of the resistan
36、ce of coatings to one of four defined cycles of wet (salt fog)/dry/humidity conditions using specified solutions. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refere
37、nces, the latest edition of the referenced document (including any amendments) applies. ISO 1513, Paints and varnishes Examination and preparation of samples for testing ISO 1514, Paints and varnishes Standard panels for testing ISO 2808, Paints and varnishes Determination of film thickness ISO 3270
38、, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing ISO 3696, Water for analytical laboratory use Specification and test methods ISO 4628-1, Paints and varnishes Evaluation of degradation of paint coatings Designation of quantity and size of defect
39、s, and of intensity of uniform changes in appearance Part 1: General introduction and designation system ISO 4628-2, Paints and varnishes Evaluation of degradation of paint coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 2: Assessment of d
40、egree of blistering ISO 4628-3, Paints and varnishes Evaluation of degradation of paint coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 3: Assessment of degree of rusting ISO 4628-4, Paints and varnishes Evaluation of degradation of paint
41、coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 4: Assessment of degree of cracking ISO 4628-5, Paints and varnishes Evaluation of degradation of paint coatings Designation of quantity and size of defects, and of intensity of uniform chang
42、es in appearance Part 5: Assessment of degree of flaking ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling EN ISO 11997-1:20062 I SO 5002 All irthgs ersedevr3 Principle A coated test panel is exposed to a cyclic wet (salt fog), drying and humidity test schedule and the
43、 effects of exposure are evaluated by criteria agreed in advance between the interested parties, these criteria usually being of a subjective nature. 4 Required supplementary information For any particular application, the test method described in this part of ISO 11997 needs to be completed by the
44、supplementary information given in Annex A. 5 Salt fog test solution Prepare the salt fog test solution by dissolving the salt or salts as given in Annexes C, D, E and F in water conforming to at least grade 2 of ISO 3696, to produce the required concentration. The salts shall be of analytical grade
45、 or visually white, and conform with the purity requirements given in Table 1. Table 1 Purity of salts Impurity Maximum mass fraction of impurity % Method of determination Total 0,5 Calculated as a percentage of the dry salt Iodide 0,1 Calculated as a percentage of the dry salt Copper 0,001 Determin
46、ed by spectrophotometry or another method of similar accuracy Nickel 0,001 Determined by spectrophotometry or another method of similar accuracy If the pH of the solution is outside the required range (see Annexes C, D, E and F), the presence of undesirable impurities in the salt or the water or bot
47、h shall be investigated. The pH determination shall be based on electrometric measurement at 25 C, but a narrow-range indicator paper which can be read in increments of 0,3 pH-units or less and which has been calibrated against electrometric measurements may be used in routine checks. Any necessary
48、corrections shall be made by adding hydrochloric acid, sodium hydrogen carbonate (both of purity conforming to the requirements of Table 1) or analytical-grade sodium hydroxide, of appropriate concentrations. NOTE Attention is drawn to the possible changes in pH resulting from loss of carbon dioxide
49、 from the solution when it is sprayed, or from dissolution of carbon dioxide from the ambient atmosphere. Such changes may be avoided by reducing the carbon dioxide content of the solution by, for example, heating it to a temperature above 35 C before it is placed in the cabinet or making the solution from freshly boiled water. 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 de
