oSIST prEN ISO 877-3:2025

SLOVENSKI STANDARD
01-september-2025
Polimerni materiali - Metode izpostavitve vremenskim vplivom - 3. del: Pospešeni
vremenski vpliv z uporabo koncentriranega sončnega sevanja (ISO/DIS 877-
3:2025)
Plastics - Methods of exposure to solar radiation - Part 3: Intensified weathering using
concentrated solar radiation (ISO/DIS 877-3:2025)
Kunststoffe - Freibewitterung - Teil 3: Beschleunigte Bewitterung mit gebündelter
Sonnenstrahlung (ISO/DIS 877-3:2025)
Plastiques - Méthodes d'exposition au rayonnement solaire - Partie 3: Exposition
intensifiée par rayonnement solaire concentré (ISO/DIS 877-3:2025)
Ta slovenski standard je istoveten z: prEN ISO 877-3
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 877-3
ISO/TC 61/SC 6
Plastics — Methods of exposure to
Secretariat: DIN
solar radiation —
Voting begins on:
Part 3: 2025-07-08
Intensified weathering using
Voting terminates on:
2025-09-30
concentrated solar radiation
Plastiques — Méthodes d'exposition au rayonnement solaire —
Partie 3: Exposition intensifiée par rayonnement solaire
concentré
ICS: 83.080.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
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NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 877-3:2025(en)
DRAFT
ISO/DIS 877-3:2025(en)
International
Standard
ISO/DIS 877-3
ISO/TC 61/SC 6
Plastics — Methods of exposure to
Secretariat: DIN
solar radiation —
Voting begins on:
Part 3:
Intensified weathering using
Voting terminates on:
concentrated solar radiation
Plastiques — Méthodes d'exposition au rayonnement solaire —
Partie 3: Exposition intensifiée par rayonnement solaire
concentré
ICS: 83.080.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
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Published in Switzerland Reference number
ISO/DIS 877-3:2025(en)
ii
ISO/DIS 877-3:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 2
5.1 General requirements .2
5.2 Apparatus for measurement of climatic factors .3
6 Test specimens . 3
7 Exposure conditions . 3
7.1 Orientation of mirrors .3
7.2 Exposure site.4
7.3 Temperature control .4
7.4 Irradiance level .5
8 Exposure stages . 6
8.1 General .6
8.2 Solar radiant exposure .6
8.2.1 Guidance for selection of the exposure stage .6
8.2.2 Instrumental measurement of solar radiant exposure .6
9 Procedure . 7
9.1 Mounting of test specimens .7
9.2 Mounting of reference materials (if used) .7
9.3 Climatic observations .7
9.4 Exposure of test specimens .7
9.4.1 General .7
9.4.2 Exposure cycles .7
9.4.3 Testing under glass.7
10 Expression of results . 8
10.1 Determination of changes in properties .8
10.2 Climatic conditions and observations .8
10.2.1 General .8
10.2.2 Temperature .8
10.2.3 Relative humidity .8
10.2.4 Levels (values) of exposure stages .8
10.2.5 Radiation measurement.9
10.2.6 Precipitation .9
10.2.7 Time of wetness .9
10.2.8 Other observations .9
11 Test report . 9
Bibliography .11

iii
ISO/DIS 877-3:2025(en)
Foreword
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