Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (ISO 11357-6:2018)

This document specifies methods for the determination of oxidation induction time (isothermal OIT)
and oxidation induction temperature (dynamic OIT) of polymeric materials by means of differential
scanning calorimetry (DSC). It is applicable to polyolefin resins that are in a fully stabilized or
compounded form, either as raw materials or finished products. It can be applicable to other plastics.

Kunststoffe - Dynamische Differenz-Thermoanalyse (DSC) - Teil 6: Bestimmung der Oxidations-Induktionszeit (isothermische OIT) und Oxidations-Induktionstemperatur (dynamische OIT) (ISO 11357-6:2018)

Dieses Dokument legt Verfahren für die Bestimmung der Oxidations-Induktionszeit (isothermische OIT, en: oxidation induction time) und Oxidations-Induktionstemperatur (dynamische OIT, en: oxidation induction temperature) von polymeren Werkstoffen mittels Dynamischer Differenz-Thermoanalyse (en: differential scanning calorimetry, DSC) fest. Es ist anwendbar auf Polyolefinharze, die in einer vollständig stabilisierten oder vermischten Form entweder als Rohmaterialien oder als Fertigerzeugnisse vorliegen. Es kann auf andere Kunststoffe angewendet werden.

Plastiques - Analyse calorimétrique différentielle (DSC) - Partie 6: Détermination du temps d'induction à l'oxydation (OIT isotherme) et de la température d'induction à l'oxydation (OIT dynamique) (ISO 11357-6:2018)

ISO 11357-6:2018 spécifie des méthodes de détermination du temps d'induction à l'oxydation (OIT isotherme) et de la température d'induction à l'oxydation (OIT dynamique) des matériaux polymères au moyen de l'analyse calorimétrique différentielle (DSC). Elle s'applique aux résines polyoléfines sous forme totalement stabilisée ou sous forme de composition, soit comme matières premières, soit comme produits finis. Elle peut s'appliquer à d'autres plastiques.

Polimerni materiali - Diferenčna dinamična kalorimetrija (DSC) - 6. del: Ugotavljanje časa indukcijske oksidacije (izotermični OIT) in temperature indukcijske oksidacije (izodinamični OIT) (ISO 11357-6:2018)

Ta dokument določa metode za ugotavljanje časa indukcijske oksidacije (izotermični OIT) in temperature indukcijske oksidacije (dinamični OIT) polimernih materialov z diferenčno dinamično kalorimetrijo (DSC). Uporablja se za poliolefinske smole, ki so v popolnoma stabilni ali sestavljeni obliki, v obliki surovin ali končnih izdelkov. Lahko se uporablja za druge umetne polimerne materiale.

General Information

Status
Published
Public Enquiry End Date
28-Jun-2017
Publication Date
16-Apr-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
12-Apr-2018
Due Date
17-Jun-2018
Completion Date
17-Apr-2018

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SLOVENSKI STANDARD
SIST EN ISO 11357-6:2018
01-junij-2018
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SIST EN ISO 11357-6:2013
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Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation

induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (ISO

11357-6:2018)
Kunststoffe - Dynamische Differenz-Thermoanalyse (DSC) - Teil 6: Bestimmung der

Oxidations-Induktionszeit (isothermische OIT) und Oxidations-Induktionstemperatur

(dynamische OIT) (ISO 11357-6:2018)

Plastiques - Analyse calorimétrique différentielle (DSC) - Partie 6: Détermination du

temps d'induction à l'oxydation (OIT isotherme) et de la température d'induction à

l'oxydation (OIT dynamique) (ISO 11357-6:2018)
Ta slovenski standard je istoveten z: EN ISO 11357-6:2018
ICS:
17.200.10 Toplota. Kalorimetrija Heat. Calorimetry
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 11357-6:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 11357-6:2018
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SIST EN ISO 11357-6:2018
EN ISO 11357-6
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2018
EUROPÄISCHE NORM
ICS 83.080.01 Supersedes EN ISO 11357-6:2013
English Version
Plastics - Differential scanning calorimetry (DSC) - Part 6:
Determination of oxidation induction time (isothermal
OIT) and oxidation induction temperature (dynamic OIT)
(ISO 11357-6:2018)

Plastiques - Analyse calorimétrique différentielle (DSC) Kunststoffe - Dynamische Differenz-Thermoanalyse

- Partie 6: Détermination du temps d'induction à (DSC) - Teil 6: Bestimmung der Oxidations-

l'oxydation (OIT isotherme) et de la température Induktionszeit (isothermische OIT) und Oxidations-

d'induction à l'oxydation (OIT dynamique) (ISO 11357- Induktionstemperatur (dynamische OIT) (ISO 11357-

6:2018) 6:2018)
This European Standard was approved by CEN on 24 February 2018.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11357-6:2018 E

worldwide for CEN national Members.
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SIST EN ISO 11357-6:2018
EN ISO 11357-6:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 11357-6:2018
EN ISO 11357-6:2018 (E)
European foreword

This document (EN ISO 11357-6:2018) 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 October 2018, and conflicting national standards shall

be withdrawn at the latest by October 2018.

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 11357-6:2013.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 11357-6:2018 has been approved by CEN as EN ISO 11357-6:2018 without any

modification.
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SIST EN ISO 11357-6:2018
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SIST EN ISO 11357-6:2018
INTERNATIONAL ISO
STANDARD 11357-6
Third edition
2018-03
Plastics — Differential scanning
calorimetry (DSC) —
Part 6:
Determination of oxidation induction
time (isothermal OIT) and oxidation
induction temperature (dynamic OIT)
Plastiques — Analyse calorimétrique différentielle (DSC) —
Partie 6: Détermination du temps d'induction à l'oxydation (OIT
isotherme) et de la température d'induction à l'oxydation (OIT
dynamique)
Reference number
ISO 11357-6:2018(E)
ISO 2018
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SIST EN ISO 11357-6:2018
ISO 11357-6:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 11357-6:2018
ISO 11357-6:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 2

4.1 General ........................................................................................................................................................................................................... 2

4.2 Oxidation induction time (isothermal OIT) ................................................................................................................... 2

4.3 Oxidation induction temperature (dynamic OIT) ..................................................................................................... 2

5 Apparatus and materials.............................................................................................................................................................................. 3

5.1 General ........................................................................................................................................................................................................... 3

5.2 DSC instrument ....................................................................................................................................................................................... 3

5.3 Crucibles ....................................................................................................................................................................................................... 3

5.4 Flowmeter ................................................................................................................................................................................................... 3

5.5 Oxygen ............................................................................................................................................................................................................ 3

5.6 Air ....................................................................................................................................................................................................................... 3

5.7 Nitrogen ........................................................................................................................................................................................................ 3

5.8 Gas-selector switch and regulators ....................................................................................................................................... 3

6 Test specimens........................................................................................................................................................................................................ 4

6.1 General ........................................................................................................................................................................................................... 4

6.2 Specimens from compression-moulded plates ........................................................................................................... 4

6.3 Specimens from injection-moulded plates or melt flow extrudates ........................................................ 4

6.4 Specimens from finished parts ................................................................................................................................................. 4

7 Test conditions and specimen conditioning ............................................................................................................................ 5

8 Calibration .................................................................................................................................................................................................................. 5

8.1 Oxidation induction time (isothermal OIT) ................................................................................................................... 5

8.2 Oxidation induction temperature (dynamic OIT) ..................................................................................................... 5

9 Procedure..................................................................................................................................................................................................................... 5

9.1 Setting up the instrument .............................................................................................................................................................. 5

9.2 Loading the test specimen into the crucible .................................................................................................................. 5

9.3 Insertion of crucibles ......................................................................................................................................................................... 5

9.4 Nitrogen, air and oxygen flow .................................................................................................................................................... 5

9.5 Sensitivity adjustment ...................................................................................................................................................................... 6

9.6 Performance of measurement ................................................................................................................................................... 6

9.6.1 Oxidation induction time (isothermal OIT) .............................................................................................. 6

9.6.2 Oxidation induction temperature (dynamic OIT) ............................................................................... 7

9.7 Cleaning ......................................................................................................................................................................................................... 7

10 Expression of results ........................................................................................................................................................................................ 8

11 Precision and bias ............................................................................................................................................................................................10

12 Test report ................................................................................................................................................................................................................10

Bibliography .............................................................................................................................................................................................................................12

© ISO 2018 – All rights reserved iii
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SIST EN ISO 11357-6:2018
ISO 11357-6:2018(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 on 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 the following

URL: www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-

chemical properties.

This third edition cancels and replaces the second edition (ISO 11357-6:2008), which has been

technically revised. The main changes compared to the previous edition are as follows:

— the normative references in Clause 2 have been updated;
— techniques for purge gas flow control have been extended.
A list of all parts in the ISO 11357 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
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SIST EN ISO 11357-6:2018
ISO 11357-6:2018(E)
Introduction

The measurement of oxidation induction time or temperature described in this document provides a

tool to assess the conformity of the material tested to a given formulation of plastics compounds, but

it is not intended to provide the concentration of antioxidant. Different antioxidants can have different

oxidation induction times or temperatures. Due to interaction of the antioxidant with other substances

in the formulation, different oxidation induction times or temperatures can result even with products

having the same type and concentration of antioxidant.
© ISO 2018 – All rights reserved v
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SIST EN ISO 11357-6:2018
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SIST EN ISO 11357-6:2018
INTERNATIONAL STANDARD ISO 11357-6:2018(E)
Plastics — Differential scanning calorimetry (DSC) —
Part 6:
Determination of oxidation induction time (isothermal
OIT) and oxidation induction temperature (dynamic OIT)
1 Scope

This document specifies methods for the determination of oxidation induction time (isothermal OIT)

and oxidation induction temperature (dynamic OIT) of polymeric materials by means of differential

scanning calorimetry (DSC). It is applicable to polyolefin resins that are in a fully stabilized or

compounded form, either as raw materials or finished products. It can be applicable to other plastics.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 293, Plastics — Compression moulding of test specimens of thermoplastic materials

ISO 294-3, Plastics — Injection moulding of test specimens of thermoplastic materials — Part 3: Small plates

ISO 472, Plastics — Vocabulary

ISO 8986-2, Plastics — Polybutene-1 (PB-1) moulding and extrusion materials — Part 2: Preparation of

test specimens and determination of properties

ISO 11357-1, Plastics — Differential scanning calorimetry (DSC) — Part 1: General principles

ISO 17855-2, Plastics — Polyethylene (PE) moulding and extrusion materials — Part 2: Preparation of test

specimens and determination of properties

ISO 19069-2, Plastics — Polypropylene (PP) moulding and extrusion materials — Part 2: Preparation of

test specimens and determination of properties
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 472 and ISO 11357-1 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
© ISO 2018 – All rights reserved 1
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SIST EN ISO 11357-6:2018
ISO 11357-6:2018(E)
3.1
oxidation induction time
isothermal OIT

relative measure of a stabilized material’s resistance to oxidative decomposition, determined by the

calorimetric measurement of the time interval to the onset of exothermic oxidation of the material at a

specified temperature in an oxygen or air atmosphere, under atmospheric pressure
Note 1 to entry: It is expressed in minutes (min).
3.2
oxidation induction temperature
dynamic OIT

relative measure of a stabilized material’s resistance to oxidative decomposition, determined by the

calorimetric measurement of the temperature of the onset of exothermic oxidation of the material

when subjected to a specified heating rate in an oxygen or air atmosphere, under atmospheric pressure

Note 1 to entry: It is expressed in degrees Celsius (°C).

Note 2 to entry: The oxidation induction temperature is also called oxidation onset temperature (OOT).

4 Principle
4.1 General

The time for which, or the temperature up to which, an antioxidant stabilizer system present in a

test specimen inhibits oxidation is measured while the specimen is held isothermally at a specified

temperature or heated at a constant rate in an oxygen or air atmosphere. The oxidation induction time

or temperature is an assessment of the level (or degree) of stabilization of the material tested. Higher

test temperatures will result in shorter oxidation induction times; faster heating rates will result in

higher oxidation induction temperatures. The oxidation induction time and temperature are also

dependen
...

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