EN ISO 24026-2:2020

SLOVENSKI STANDARD
01-oktober-2020
Nadomešča:
SIST EN ISO 8257-2:2006
Polimerni materiali - Materiali na osnovi polimetilmetakrilata (PMMA) za
oblikovanje in ekstrudiranje - 2. del: Priprava preskušancev in ugotavljanje
lastnosti (ISO 24026-2:2020)
Plastics - Poly(methyl methacrylate) (PMMA) moulding and extrusion materials - Part 2:
Preparation of test specimens and determination of properties (ISO 24026-2:2020)
Kunststoffe - Polymethylmethacrylat (PMMA)-Werkstoffe - Teil 2: Herstellung von
Probekörpern und Bestimmung von Eigenschaften (ISO 24026-2:2020)
Plastiques - Matériaux à base de poly(méthacrylate de méthyle) (PMMA) pour moulage
et extrusion - Partie 2: Préparation des éprouvettes et détermination des propriétés (ISO
24026-2:2020)
Ta slovenski standard je istoveten z: EN ISO 24026-2:2020
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 24026-2
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2020
EUROPÄISCHE NORM
ICS 83.080.20 Supersedes EN ISO 8257-2:2006
English Version
Plastics - Poly(methyl methacrylate) (PMMA) moulding
and extrusion materials - Part 2: Preparation of test
specimens and determination of properties (ISO 24026-
2:2020)
Plastiques - Matériaux à base de poly(méthacrylate de Kunststoffe - Polymethylmethacrylat (PMMA)-
méthyle) (PMMA) pour moulage et extrusion - Partie 2: Formmassen - Teil 2: Herstellung von Probekörpern
Préparation des éprouvettes et détermination des und Bestimmung von Eigenschaften (ISO 24026-
propriétés (ISO 24026-2:2020) 2:2020)
This European Standard was approved by CEN on 21 May 2020.

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 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
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,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 24026-2:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 24026-2:2020) 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
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 December 2020, and conflicting national standards
shall be withdrawn at the latest by December 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 8257-2:2006.
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, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 24026-2:2020 has been approved by CEN as EN ISO 24026-2:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 24026-2
First edition
2020-05
Plastics — Poly(methyl methacrylate)
(PMMA) moulding and extrusion
materials —
Part 2:
Preparation of test specimens and
determination of properties
Plastiques — Matériaux à base de poly(méthacrylate de méthyle)
(PMMA) pour moulage et extrusion —
Partie 2: Préparation des éprouvettes et détermination des propriétés
Reference number
ISO 24026-2:2020(E)
©
ISO 2020
ISO 24026-2:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO 2020 – All rights reserved

ISO 24026-2:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Preparation of test specimens . 2
4.1 General . 2
4.2 Treatment of the material before moulding . 2
4.3 Moulding of specimens . 3
4.3.1 General requirements . 3
4.3.2 Melt temperature . . . 3
4.3.3 Mould temperature . 4
4.3.4 Average melt velocity . 4
4.3.5 Hold pressure . 5
4.3.6 Cooling time . 5
5 Conditioning of test specimens . 5
6 Determination of properties . 5
ISO 24026-2:2020(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9,
Thermoplastic materials, in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This first edition of ISO 24026-2 cancels and replaces ISO 8257-2:2001, which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the normative references have been updated;
— Clause 3 has been added;
— the contents of Table 3 and Table 4 have been updated.
A list of all parts in the ISO 24026 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved

INTERNATIONAL STANDARD ISO 24026-2:2020(E)
Plastics — Poly(methyl methacrylate) (PMMA) moulding
and extrusion
...