1、June 2013Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 83
2、.080.01!%3j“2021671www.din.deDDIN EN ISO 4892-2Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc lamps (ISO 4892-2:2013);English version EN ISO 4892-2:2013,English translation of DIN EN ISO 4892-2:2013-06Kunststoffe Knstliches Bestrahlen oder Bewittern in Gerten Teil 2: Xeno
3、nbogenlampen (ISO 4892-2:2013);Englische Fassung EN ISO 4892-2:2013,Englische bersetzung von DIN EN ISO 4892-2:2013-06Plastiques Mthodes dexposition des sources lumineuses de laboratoire Partie 2: Lampes arc au xnon (ISO 4892-2:2013);Version anglaise EN ISO 4892-2:2013,Traduction anglaise de DIN EN
4、ISO 4892-2:2013-06SupersedesDIN EN ISO 4892-2:2009-11www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 18 pages06.13 DIN EN ISO 4892-2:2013-06 2 A comma is used as the decimal marker. National foreword This document (EN ISO 4892-2:2013) h
5、as been prepared by Technical Committee ISO/TC 61 “Plastics” (Secretariat: SAC, China) in collaboration with Technical Committee CEN/TC 249 “Plastics” (Secretariat: NBN, Belgium). The responsible German body involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committe
6、e), Working Committee NA 054-01-04 AA Verhalten gegen Umgebungseinflsse. The DIN Standards corresponding to the International Standards referred to in Clause 2 of this standard are as follows. For ISO 4582 and ISO 9370 there are no national standards available. ISO 4892-1 DIN EN ISO 4892-1 Amendment
7、s This standard differs from DIN EN ISO 4892-2:2009-11 as follows: a) in Subclause 4.4, it has been included that the preferred maximum surface temperature device is the black-standard thermometer; b) in Table 3, Method A, cycles no. 3 and 4 have been deleted; c) all cycles where the chamber tempera
8、ture and relative humidity are not controlled, have been transferred to Annex B (normative) (Table B.1, black-standard temperature and Table B.2, black-panel temperature); d) in Table B.2, 2 cycles with increased black-standard temperature have been included; e) Table 4 “Exposure cycles with tempera
9、ture control by black-panel thermometer (BPT)” has been added with exposure cycles corresponding to Table 3; f) in Annex A (informative), Subclause A.1, further explanatory notes concerning CIE85:1989 Table 4 have been included; g) in Subclause A.2.2, a NOTE has been added clarifying the preferred t
10、ransmittance for window glass. Previous editions DIN 53387: 1973-01, 1974-10, 1982-06, 1989-04 DIN 53389: 1974-04 DIN EN ISO 4892-2: 2000-11, 2006-06, 2009-11 National Annex NA (informative) Bibliography DIN EN ISO 4892-1, Plastics Methods of exposure to laboratory light sources Part 1: General guid
11、ance EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4892-2 March 2013 ICS 83.080.01 Supersedes EN ISO 4892-2:2006English Version Plastics - Methods of exposure to laboratory light sources - Plastiques - Mthodes dexposition des sources lumineuses de laboratoire - Partie 2: Lampes arc au xno
12、n (ISO 4892-2:2013) Kunststoffe - Knstliches Bestrahlen oder Bewittern in Gerten - Teil 2: Xenonbogenlampen (ISO 4892-2:2013) This European Standard was approved by CEN on 9 February 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for gi
13、ving 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 Standard exists in three of
14、ficial 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 national standards bodies
15、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, Slovakia, Slovenia, Spain
16、, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG 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 nati
17、onal Members. Ref. No. EN ISO 4892-2:2013: EPart 2: Xenon-arc lamps (ISO 4892-2:2013) Contents Page Foreword . 3 1 Scope . 4 2 Normative references. 4 3 Principle 4 4 Apparatus 5 4.1 Laboratory light source . 5 4.2 Test chamber 7 4.3 Radiometer 8 4.4 Black-standard/black-panel thermometer . 8 4.5 We
18、tting and humidity-control equipment 8 4.6 Specimen holders 8 4.7 Apparatus to assess changes in properties . 9 5 Test specimens 9 6 Exposure conditions 9 6.1 Radiation . 9 6.2 Temperature 9 6.3 Relative humidity of chamber air 10 6.4 Spray cycle . 10 6.5 Cycles with dark periods . 11 6.6 Sets of ex
19、posure conditions . 11 7 Procedure 12 7.1 General 12 7.2 Mounting the test specimens 12 7.3 Exposure . 12 7.4 Measurement of radiant exposure 12 7.5 Determination of changes in properties after exposure 12 8 Exposure report 12 Annex A (informative) Filtered xenon-arc radiation Relative spectral irra
20、diance 13 Annex B (normative) Additional exposure cycles 14 Bibliography 16 2DIN EN ISO 4892-2:2013-06 EN ISO 4892-2:2013 (E) Foreword This document (EN ISO 4892-2:2013) has been prepared by Technical Committee ISO/TC 61 in collaboration with Technical Committee CEN/TC 249 “Plastics”the secretariat
21、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, at the latest by September 2013, and conflicting national standards shall be withdrawn at the latest by September 2013. Attention is drawn t
22、o 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 4892-2:2006. According to the CEN-CENELEC Internal Regulations, the nation
23、al 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, Iceland, Ireland, Italy, Latvia, Lithu
24、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 4892-2:2013 has been approved by CEN as EN ISO 4892-2:2013 without any modification. “Plastics”3DIN EN ISO 4892-2
25、:2013-06 EN ISO 4892-2:2013 (E) EN ISO 4892 consists of the following parts, under the general title Plastics Methods of exposure to laboratory light sources: Part 1: General guidance Part 2: Xenon-arc lamps Part 3: Fluorescent UV lamps Part 4: Open-flame carbon-arc lamps 1 ScopeThis part of ISO 489
26、2 specifies methods for exposing specimens to xenon-arc light in the presence of moisture to reproduce the weathering effects (temperature, humidity and/or wetting) that occur when materials are exposed in actual end-use environments to daylight or to daylight filtered through window glass.Specimen
27、preparation and evaluation of the results are covered in other International Standards for specific materials.General guidance is given in ISO 4892-1.NOTE Xenon-arc exposures of paints and varnishes are described in ISO 11341.2 Normative referencesThe following documents, in whole or in part, are no
28、rmatively referenced in 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 4582, Plastics Determination of changes in colour and va
29、riations in properties after exposure to daylight under glass, natural weathering or laboratory light sourcesISO 4892-1, Plastics Methods of exposure to laboratory light sources Part 1: General guidanceISO 9370, Plastics Instrumental determination of radiant exposure in weathering tests General guid
30、ance and basic test method3 Principle3.1 A xenon arc, fitted with filters, is used to simulate the relative spectral irradiance of daylight in the ultraviolet (UV) and visible regions of the spectrum.3.2 Specimens are exposed to various levels of light, heat, relative humidity and water (see 3.4) un
31、der controlled environmental conditions.3.3 The exposure conditions are varied by selection ofa) the light filter(s);b) the irradiance level;c) the temperature during exposure to light;d) the relative humidity in the chamber during light and dark exposures, when exposure conditions requiring control
32、 of humidity are used;e) the way the test specimens are wetted (see 3.4);4DIN EN ISO 4892-2:2013-06 EN ISO 4892-2:2013 (E) f) the water temperature and wetting cycle;g) the relative lengths of the light and dark periods.3.4 Wetting is produced by spraying the test specimens with demineralized/deioni
33、zed water, by immersion in water or by condensation of water vapour onto the surfaces of the specimens.3.5 The procedure includes measurements of the UV irradiance and UV radiant exposure in the plane of the specimens.3.6 It is recommended that a similar material of known performance (a control) be
34、exposed simultaneously with the test specimens to provide a standard for comparative purposes.3.7 Intercomparison of results obtained from specimens exposed in different apparatus should not be made unless an appropriate statistical relationship has been established between the apparatuses for the p
35、articular material exposed.4 Apparatus4.1 Laboratory light source4.1.1 GeneralThe light source shall comprise one or more quartz-jacketed xenon-arc lamps which emit radiation from below 270 nm in the ultraviolet through the visible spectrum and into the infrared. In order to simulate daylight, filte
36、rs shall be used to remove short-wavelength UV radiation (method A, see Table 1). Filters to minimize irradiance at wavelengths shorter than 310 nm shall be used to simulate daylight through window glass (method B, see Table 2). In addition, filters to remove infrared radiation may be used to preven
37、t unrealistic heating of the test specimens, which can cause thermal degradation not experienced during outdoor exposures.NOTE Solar spectral irradiance for a number of different atmospheric conditions is described in CIE Publication No. 85. The benchmark daylight used in this part of ISO 4892 is th
38、at defined in Table 4 in CIE No. 85:1989.4.1.2 Spectral irradiance of xenon-arc lamps with daylight filtersFilters are used to filter xenon-arc emissions in order to simulate daylight (CIE Publication No. 85:1989, Table 4). The minimum and maximum levels of the relative spectral irradiance in the UV
39、 wavelength range are given in Table 1 (see also Annex A).5DIN EN ISO 4892-2:2013-06 EN ISO 4892-2:2013 (E) Table 1 Relative spectral irradiance of xenon-arc lamps with daylight filtersab(method A)Spectral passband ( = wavelength in nm)Minimumc%CIE No. 85:1989, Table 4de%Maximumc% 290 0,15290 320 2,
40、6 5,4 7,9320 360 28,2 38,2 39,8360 400 54,2 56,4 67,5aThis table gives the irradiance in the given passband, expressed as a percentage of the total irradiance between 290 nm and 400 nm. To determine whether a specific filter or set of filters for a xenon-arc lamp meets the requirements of this table
41、, the spectral irradiance must be measured from 250 nm to 400 nm. The total irradiance in each wavelength passband is then summed and divided by the total irradiance from 290 nm to 400 nm. Typically, this is done in 2 nm increments.bThe minimum and maximum limits in this table are based on more than
42、 100 spectral irradiance measurements with water- and air-cooled xenon-arc lamps with daylight filters from different production lots and of various ages,3used in accordance with the recommendations of the manufacturer. As more spectral irradiance data become available, minor changes in the limits a
43、re possible. The minimum and maximum limits are at least three sigma from the mean for all the measurements.cThe minimum and maximum columns will not necessarily sum to 100 % because they represent the minima and maxima for the measurement data used. For any individual spectral irradiance, the perce
44、ntages calculated for the passbands in this table will sum to 100 %. For any individual xenon-arc lamp with daylight filters, the calculated percentage in each passband shall fall within the minimum and maximum limits given. Exposure results can be expected to differ if obtained using xenon-arc appa
45、ratus in which the spectral irradiances differ by as much as that allowed by the tolerances. Contact the manufacturer of the xenon-arc apparatus for specific spectral irradiance data for the xenon-arc lamp and filters used.dThe data from Table 4 in CIE Publication No. 85:1989 is the global solar irr
46、adiance on a horizontal surface for an air mass of 1,0, an ozone column of 0,34 cm at STP, 1,42 cm of precipitable water vapour and a spectral optical depth of aerosol extinction of 0,1 at 500 nm. These data are target values for xenon-arc lamps with daylight filters.eFor the solar spectrum represen
47、ted by Table 4 in CIE No. 85:1989, the UV irradiance (between 290 nm and 400 nm) is 11 % and the visible irradiance (between 400 nm and 800 nm) is 89 %, expressed as a percentage of the total irradiance between 290 nm and 800 nm. The percentage of the UV irradiance and that of the visible irradiance
48、 incident on specimens exposed in xenon-arc apparatus might vary due to the number of specimens being exposed and their reflectance properties.4.1.3 Spectral irradiance of xenon-arc lamps with window glass filtersFilters are used to filter the xenon-arc lamp emissions in order to simulate daylight w
49、hich has passed through window glass. The minimum and maximum levels of the relative spectral irradiance in the UV region are given in Table 2 (see also Annex A).Table 2 Relative spectral irradiance for xenon-arc lamps with window glass filtersab(method B)Spectral passband ( = wavelength in nm)Minimumc%CIE No. 85:1989, Table 4, plus effect of window glassde%Maximumc% 300 0,29300 320 0,1 1 2,8320 360 23,8 33,1 35,56
