SIST EN ISO 4892-2:2006
(Main)Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps (ISO 4892-2:2006)
Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps (ISO 4892-2:2006)
This part of ISO 4892 specifies methods for exposing specimens to xenon-arc light and water apparatus to reproduce the weathering effects that occur when materials are exposed in actual end use environments to daylight, or to daylight through window glass. The specimens are exposed to filtered xenon-arc light under controlled environmental conditions (temperature, humidity and/or moisture). Different types of xenon-arc light sources and different filter combinations may be used to meet all requirements. Specimen preparation and evaluation of the results are covered in other ISO documents for specific materials. General guidance is given in ISO 4892-1.
Kunststoffe - Künstliches Bestrahlen oder Bewittern in Geräten - Teil 2: Xenonbogenlampen (ISO 4892-2:2006)
Dieser Teil von EN ISO 4892 legt die Verfahren fest, bei denen Probekörper in einem Gerät einer Xenonbogenstrahlung, Wärme und Wasser ausgesetzt werden, um die Bewitterungseffekte nachzubilden, die auftreten, wenn Werkstoffe in realen, im Endgebrauch vorhandenen Umgebungen der Globalstrahlung oder Globalstrahlung hinter Fensterglas ausgesetzt sind.
Die Probekörper werden bei geregelten Umgebungsbedingungen (Temperatur, Luftfeuchte und/oder Benässung) gefilterter Xenonlampenstrahlung ausgesetzt. Um verschiedene Anforderungen zu erfüllen, können unterschiedliche Typen Xenonbogenlampen und unterschiedliche Filterkombinationen verwendet werden.
Die Vorbereitung der Probekörper und die Auswertung der Ergebnisse werden in anderen, für bestimmte Werkstoffe vorgesehenen Internationalen Normen behandelt.
Eine allgemeine Anleitung ist in ISO 4892-1 gegeben.
ANMERKUNG Die Beanspruchung von Beschichtungsstoffen durch Xenonbogenstrahlung ist in ISO 11341 [ 2 ] beschrieben.
Plastiques - Méthodes d'exposition a des sources lumineuses de laboratoire - Partie 2: Lampes a arc au xénon (ISO 4892-2:2006)
L´ISO 4892-2:2006 spécifie des méthodes pour l´exposition d´éprouvettes à des sources lumineuses à arc au xénon, en présence d'humidité, pour reproduire les effets de vieillissement qui se produisent lorsque des matériaux sont exposés, dans des environnements d'utilisation finale réels, à la lumière du jour et à la lumière du jour filtrée à travers un vitrage de fenêtre.
Les éprouvettes sont exposées à des sources lumineuses à arc au xénon filtrées, dans des conditions contrôlées (température, humidité et/ou mouillage). Différents types de sources lumineuses à arc au xénon et différentes combinaisons de filtres peuvent être utilisées pour répondre à différentes exigences.
Polimerni materiali – Metode izpostavitve laboratorijskim virom svetlobe – 2. del: Ksenonske svetilke (ISO 4892-2:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 4892-2:2006
01-april-2006
1DGRPHãþD
SIST EN ISO 4892-2:2000
Polimerni materiali – Metode izpostavitve laboratorijskim virom svetlobe – 2. del:
Ksenonske svetilke (ISO 4892-2:2006)
Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps (ISO
4892-2:2006)
Kunststoffe - Künstliches Bestrahlen oder Bewittern in Geräten - Teil 2:
Xenonbogenlampen (ISO 4892-2:2006)
Plastiques - Méthodes d'exposition a des sources lumineuses de laboratoire - Partie 2:
Lampes a arc au xénon (ISO 4892-2:2006)
Ta slovenski standard je istoveten z: EN ISO 4892-2:2006
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 4892-2:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 4892-2:2006
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SIST EN ISO 4892-2:2006
EUROPEAN STANDARD
EN ISO 4892-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2006
ICS 83.080.01 Supersedes EN ISO 4892-2:1999
English Version
Plastics - Methods of exposure to laboratory light sources - Part
2: Xenon-arc lamps (ISO 4892-2:2006)
Plastiques - Méthodes d'exposition à des sources Kunststoffe - Künstliches Bestrahlen oder Bewittern in
lumineuses de laboratoire - Partie 2: Lampes à arc au Geräten - Teil 2: Xenonbogenlampen (ISO 4892-2:2006)
xénon (ISO 4892-2:2006)
This European Standard was approved by CEN on 28 October 2005.
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 references concerning such national
standards may be obtained on application to the Central Secretariat 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 CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
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, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4892-2:2006: E
worldwide for CEN national Members.
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SIST EN ISO 4892-2:2006
EN ISO 4892-2:2006 (E)
Foreword
This document (EN ISO 4892-2:2006) has 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 IBN.
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
standards shall be withdrawn at the latest by August 2006.
This document supersedes EN ISO 4892-2:1999.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: 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, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 4892-2:2006 has been approved by CEN as EN ISO 4892-2:2006 without any
modifications.
2
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SIST EN ISO 4892-2:2006
INTERNATIONAL ISO
STANDARD 4892-2
Second edition
2006-02-01
Plastics — Methods of exposure to
laboratory light sources —
Part 2:
Xenon-arc lamps
Plastiques — Méthodes d'exposition à des sources lumineuses de
laboratoire —
Partie 2: Lampes à arc au xénon
Reference number
ISO 4892-2:2006(E)
©
ISO 2006
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SIST EN ISO 4892-2:2006
ISO 4892-2:2006(E)
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ii © ISO 2006 – All rights reserved
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SIST EN ISO 4892-2:2006
ISO 4892-2:2006(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 1
3 Principle. 1
4 Apparatus . 2
5 Test specimens . 6
6 Exposure conditions . 6
7 Procedure . 8
8 Exposure report . 8
Annex A (informative) Filtered xenon-arc radiation — Spectral power distribution . 9
Bibliography . 10
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SIST EN ISO 4892-2:2006
ISO 4892-2:2006(E)
Foreword
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 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, 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, 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 casting 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 4892-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 6, Ageing,
chemical and environmental resistance.
This second edition cancels and replaces the first edition (ISO 4892-2:1994), which has been technically
revised.
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
iv © ISO 2006 – All rights reserved
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SIST EN ISO 4892-2:2006
INTERNATIONAL STANDARD ISO 4892-2:2006(E)
Plastics — Methods of exposure to laboratory light sources —
Part 2:
Xenon-arc lamps
1 Scope
This part of ISO 4892 specifies methods for exposing specimens to xenon-arc light in the presence of
moisture to reproduce the weathering effects that occur when materials are exposed in actual end-use
environments to daylight or to daylight filtered through window glass.
The specimens are exposed to filtered xenon-arc light under controlled conditions (temperature, humidity
and/or wetting). Various types of xenon-arc light source and various filter combinations may be used to meet
different requirements.
Specimen 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 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 referenced
document (including any amendments) applies.
ISO 4582, Plastics — Determination of changes in colour and variations in properties after exposure to
daylight under glass, natural weathering or laboratory light sources
ISO 4892-1, Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance
3 Principle
3.1 A xenon arc, fitted with suitable filters and properly maintained, is used to simulate the spectral power
distribution 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) under
controlled environmental conditions.
3.3 The exposure conditions may be varied by selection of
a) the light filter(s);
b) the irradiance level;
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SIST EN ISO 4892-2:2006
ISO 4892-2:2006(E)
c) the temperature during exposure to light;
d) the relative humidity in the chamber during light and dark exposures, when exposure conditions requiring
control of humidity are used;
e) the way the test specimens are wetted (see 3.4);
f) the water temperature and wetting cycle;
g) the relative lengths of the light and dark periods.
3.4 Wetting is usually produced by spraying the test specimens with demineralized/deionized water, by
immersion in water or by condensation of water vapour onto the surfaces of the specimens.
3.5 The procedure may include measurements of the irradiance and radiant exposure in the plane of the
specimens.
3.6 It is recommended that a similar material of known performance (a control) be 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 particular
material exposed.
4 Apparatus
4.1 Laboratory light source
4.1.1 General
The 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, filters
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 prevent 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 that defined in Table 4 in CIE No. 85:1989.
4.1.2 Spectral irradiance of xenon-arc lamps with daylight filters
Filters 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 wavelength range are
given in Table 1 (see also Annex A).
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SIST EN ISO 4892-2:2006
ISO 4892-2:2006(E)
a, b
Table 1 — Relative spectral irradiance of xenon-arc lamps with daylight filters (method A)
c d, e c
Spectral passband Minimum CIE No. 85:1989, Table 4 Maximum
(λ = wavelength in nm) % % %
λ < 290 0,15
290 u λ u 320 2,6 5,4 7,9
320 < λ u 360 28,2 38,2 39,8
360 < λ u 400 54,2 56,4 67,5
a
This 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, 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.
b
The minimum and maximum limits in this table are based on more than 100 spectral irradiance measurements
[3]
with water- and air-cooled xenon-arc lamps with daylight filters from different production lots and of various ages ,
used in accordance with the recommendations of the manufacturer. As more spectral irradiance data become
available, minor changes in the limits are possible. The minimum and maximum limits are at least three sigma from the
mean for all the measurements.
c
The 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 percentages 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 apparatus 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.
d
The data from Table 4 in CIE Publication No. 85:1989 is the global solar irradiance 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.
e
For the solar spectrum represented 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
incident on specimens exposed in xenon-arc apparatus may 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 filters
Filters are used to filter the xenon-arc lamp emissions in order to simulate daylight which 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).
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SIST EN ISO 4892-2:2006
ISO 4892-2:2006(E)
a, b
Table 2 — Relative spectral irradiance for xenon-arc lamps with window glass filters (method B)
c c
Spectral passband Minimum CIE No. 85:1989, Table 4 Maximum
d, e
plus effect of window glass
(λ = wavelength in nm) % % %
λ < 300 0,29
300 u λ u 320 0,1 u 1 2,8
320 < λ u 360 23,8 33,1 35,5
360 < λ u 400 62,4 66,0 76,2
a
...
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