EN ISO 4611-2010 en Plastics - Determination of the effects of exposure to damp heat water spray and salt mist《塑料 -暴露的影响 湿热 水喷雾和盐雾》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 4611:2010Plastics Determination of theeffects of exposure to dampheat, water spray and salt mist(ISO 4611:2010)BS EN ISO 4611:2010 BRITISH STANDARDNational forewordThis

2、 British Standard is the UK implementation of EN ISO 4611:2010.It supersedes BS EN ISO 4611:2008 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/21, Testing of plastics.A list of organizations represented on this committee can beobtained on request

3、to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 68396 1ICS 83.080.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard

4、was published under the authority of theStandards Policy and Strategy Committee on 31 January 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4611 December 2010 ICS 83.080.01 Supersedes EN ISO 4611:2008English Version Plastics - Dete

5、rmination of the effects of exposure to damp heat, water spray and salt mist (ISO 4611:2010) Plastiques - Dtermination des effets dune exposition la chaleur humide, au brouillard deau et au brouillard salin (ISO 4611:2010) Kunststoffe - Bestimmung des Verhaltens bei Einwirkung von warmfeuchtem Klima

6、, Sprhwasser und Salznebel (ISO 4611:2010) This European Standard was approved by CEN on 14 December 2010. 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 alterati

7、on. 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 Standard exists in three official versions (English, French, German). A version in any other language made by

8、 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 national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

9、Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCH

10、ES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4611:2010: EBS EN ISO 4611:2010EN ISO 4611:2010 (E) 3 Foreword This document (EN ISO 4611:2010) has

11、 been prepared by Technical Committee ISO/TC 61 “Plastics” in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, a

12、t the latest by June 2011, and conflicting national standards shall be withdrawn at the latest by June 2011. 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 a

13、ll such patent rights. This document supersedes EN ISO 4611:2008. According to the 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, Es

14、tonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 4611:2010 has been approved by CE

15、N as a EN ISO 4611:2010 without any modification. BS EN ISO 4611:2010ISO 4611:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv 0 Introductionv 1 Scope1 2 Normative references1 3 Principle .1 4 General test conditions.2 4.1 Equipment requirements 2 4.2 Exposure conditions.3 4.3 Test

16、specimens (see 5.2, 6.2 and 7.2) 5 5 Change of mass.5 5.1 General .5 5.2 Test specimens6 5.3 Conditioning 7 5.4 Procedure.7 5.5 Expression of results7 6 Change of dimensions and appearance .7 6.1 General .7 6.2 Test specimens8 6.3 Conditioning 8 6.4 Procedure.8 6.5 Expression of results8 7 Change of

17、 other physical properties.9 7.1 General .9 7.2 Test specimens9 7.3 Conditioning 9 7.4 Procedure.10 7.5 Expression of results10 8 Test report10 Annex A (informative) Absorption of moisture by a test specimen of a plastics material in equilibrium with its conditioning atmosphere .11 Bibliography12 BS

18、 EN ISO 4611:2010ISO 4611:2010(E) iv ISO 2010 All rights reservedForeword ISO (the 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 c

19、ommittees. 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 the work. ISO collaborates closely with t

20、he 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, Part 2. The main task of technical committees is to prepare International Standards. Draft Internat

21、ional 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 casting a vote. Attention is drawn to the possibility that some of the elements of this document may be

22、 the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4611 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 6, Ageing, chemical and environmental resistance. This fourth edition cancels and replaces the third editi

23、on (ISO 4611:2008), which has been technically revised. The main changes concern the equipment requirements and exposure conditions specified in Clause 4. BS EN ISO 4611:2010ISO 4611:2010(E) ISO 2010 All rights reserved v0 Introduction 0.1 Various test methods are available for the exposure of plast

24、ics to different aggressive agents acting in a combined and simultaneous fashion, such as natural weathering. Other test methods are available for the purpose of a separate evaluation of the action of individual aggressive agents. Among the latter there are, for example, tests for the resistance to

25、specific chemicals and to radiations of a definite spectral range. For some applications, it may be desirable to evaluate the behaviour of the materials in a hot damp atmosphere just below the saturation limit of water vapour, as well as in the presence of the liquid phase. In these conditions not o

26、nly water absorption or leaching of some ingredients of the composition may be observed but also degradation phenomena due to hydrolysis, exudation of plasticizers, etc. It may also be desirable sometimes to evaluate the behaviour of materials in the presence of a highly corrosive electrolyte, such

27、as a sodium chloride solution (salt mist), which is the principal aggressive agent present in marine environments and of particular importance in the case of nautical applications. It is well known that sodium chloride has no noticeable action on the polymers that are the basic components of plastic

28、s, and that salt solutions, owing to their higher osmotic pressure, are normally absorbed by plastics to a lesser degree than pure water, but it cannot be assumed a priori that they have no action on composite materials, containing fillers, reinforcing components or pigments, for instance. Furthermo

29、re, the evaluation of the effect of salt mist can be very important for finished or semi-finished articles which, while basically consisting of plastic materials, do contain some metallic elements, such as moulded-in inserts, thin laminated foils, surface coatings applied by electro-plating or other

30、 procedures, or, lastly, metal cores sheathed with plastics by extrusion or by dipping in pastes or fluidized-bed powders. 0.2 Methods and equipment for obtaining reproducible aggressive environments of the above types are well known and have been described by International Standards relevant to oth

31、er materials and IEC (International Electrotechnical Commission) standards relevant to electrical and electronic components. The same equipment and procedures described in these standards can also be employed for plastics, with appropriate care and adjustments. 0.3 The present International Standard

32、 is intended to provide general guidance only, on the choice of suitable equipment and procedures for obtaining the exposure conditions described above and for the preparation of test specimens. It also only gives general guidance on the properties to be evaluated. Specific details are given in the

33、various ISO and IEC publications. For the expression of results, the present International Standard follows, as far as possible, the same criteria adopted in the existing test methods for the exposure to chemicals (see ISO 175) and to natural weathering or artificial light (see ISO 4582). 0.4 These

34、tests are intended to yield data about the effects of the described exposures on the materials; however, a direct correlation between the experimental results and the behaviour in service is not to be inferred. BS EN ISO 4611:2010BS EN ISO 4611:2010INTERNATIONAL STANDARD ISO 4611:2010(E) ISO 2010 Al

35、l rights reserved 1Plastics Determination of the effects of exposure to damp heat, water spray and salt mist 1 Scope 1.1 This International Standard specifies the conditions of exposure of plastics to damp heat, water spray, salt mist, and the methods for the evaluation of the change in some signifi

36、cant characteristics after given exposure stages. 1.2 This International Standard is, in general, suitable for all plastics in the form of standard test specimens, and finished articles or parts thereof. 1.3 This International Standard considers separately methods for the determination of change in

37、mass, change in dimensions and appearance, change in physical properties. 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 references, the latest edition of the referenc

38、ed document (including any amendments) applies. ISO 62, Plastics Determination of water absorption 3 Principle One or more properties are determined before and after given periods of exposure in the specified environmental conditions, and any change in appearance is observed. If required, the determ

39、ination of one or more properties may be carried out after exposure and a subsequent drying treatment or a reconditioning treatment carried out with the aim of obtaining the same state of equilibrium with atmospheric humidity as that of the initial specimens. BS EN ISO 4611:2010ISO 4611:2010(E) 2 IS

40、O 2010 All rights reserved4 General test conditions 4.1 Equipment requirements 4.1.1 General Equipment used for exposing specimens to steady state or cyclic exposure conditions involving heat, humidity, and water or salt spray shall be made from corrosion resistant materials that will not interact w

41、ith or contaminate the specimens being exposed. In addition, the device shall provide a means to programme and time the various portions of the exposure cycles that are used. Sensing devices for measurement of temperature and relative humidity shall be located within the working volume of the chambe

42、r. Any condensed water shall be continuously drained from the chamber and not re-used until re-purified. No condensed water from the walls or roof of the chamber can fall on the test specimens. Water used for the maintenance of the chamber humidity shall have a resistivity of at least 0,05 M cm. For

43、 the water spray (see 4.2.2) and salt mist (see 4.2.3) tests, the following additional equipment requirements shall be met. The cabinet shall have a volume of not less than 0,4 m3since, with smaller volumes, difficulties have been experienced in ensuring an even distribution of spray. For large-volu

44、me cabinets, it is nevertheless necessary to ensure that the spray is distributed homogeneously throughout the cabinet. The upper parts of the inside of the cabinet shall be designed so that any drops of spray which form on its surface cannot fall on the specimens being tested. For the salt mist tes

45、t (see 4.2.3), the apparatus should, for environmental reasons, preferably be fitted with equipment for treating the salt mist after the test, prior to releasing it to the atmosphere, and also with equipment for treating the salt water produced during the test, prior to discharging it to the sewage

46、system. For the water spray (see 4.2.2) and salt mist (see 4.2.3) tests, the device for spraying the water or salt solution shall include a supply of compressed air, a reservoir containing the water or salt solution to be sprayed, and one or more atomizers. Before it reaches the atomizers, the compr

47、essed air shall be passed through a filter to remove all traces of oil and solid matter, and the atomization shall be carried out at an overpressure of about 70 kPa. The level of the water or salt solution shall be maintained automatically. In order to prevent evaporation of water from the sprayed d

48、roplets, the compressed air shall be humidified, before entering the atomizer, by passing it through a saturation tower containing distilled or deionized water at a temperature 10 C above that of the cabinet. For the salt mist test (see 4.2.3), the characteristics of the mist produced will depend on

49、 the pressure used and on the type of atomizer nozzle. These shall be adjusted so that the concentration of the salt mist in the cabinet (as measured by the rate of deposition of the mist on a collection surface) and the salt concentration in the mist are kept within the limits specified in 4.2.3. NOTE ISO 9142:2003, Annex E, describes exposure conditions similar to those used in this International Standard. 4.1.2 Temperature The exposure cabinet shall be capable of controlling the temperature in the exposure chamber to within 2 C of t