SIST EN ISO 11357-4:2021

Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat capacity (ISO 11357-4:2021)

This document specifies methods for determining the specific heat capacity of plastics by differential scanning calorimetry.

Kunststoffe - Dynamische Differenz-Thermoanalyse (DSC) - Teil 4: Bestimmung der spezifischen Wärmekapazität (ISO 11357-4:2021)

Dieses Dokument legt Verfahren zur Bestimmung der spezifischen Wärmekapazität von Kunststoffen mittels Dynamischer Differenzkalorimetrie fest.

Plastiques - Analyse calorimétrique différentielle (DSC) - Partie 4: Détermination de la capacité thermique massique (ISO 11357-4:2021)

Le présent document spécifie des méthodes de détermination de la capacité thermique massique des plastiques par analyse calorimétrique différentielle.

Polimerni materiali - Diferenčna dinamična kalorimetrija (DSC) - 4. del: Ugotavljanje specifične toplotne kapacitete (ISO 11357-4:2021)

General Information

• Status: Published
• Public Enquiry End Date: 28-Jul-2020
• Publication Date: 07-Mar-2021
• ICS: 17.200.10 - Heat. Calorimetry
• ICS: 83.080.01 - Plastics in general
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Mar-2021
• Due Date: 09-May-2021
• Completion Date: 08-Mar-2021
• Ref Project: EN ISO 11357-4:2021 - Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat capacity (ISO 11357-4:2021)

Relations

• Replaces: SIST EN ISO 11357-4:2014 - Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat capacity (ISO 11357-4:2014)
• Effective Date: 02-Mar-2021
• Revised: SIST EN ISO 11357-4:2014 - Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat capacity (ISO 11357-4:2014)
• Effective Date: 27-Nov-2019

Overview

EN ISO 11357-4:2021 - "Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat capacity" specifies standardized DSC methods to determine the specific heat capacity (cp) of plastics. Approved by CEN in 2021, this third edition supersedes the 2014 version and updates the measurement procedure and reference data for calibration material (commonly α‑alumina). The standard defines test runs, apparatus requirements and calculation principles to obtain reliable cp values for thermal characterization, modelling and quality control.

Key topics and technical requirements

• Scope and principle
  • Methods for measuring cp of polymer materials by DSC, avoiding regions of first‑order phase transitions.
  • Measurements use three DSC runs at the same scanning rate: blank, calibration and specimen.
• Measurement approaches
  • Continuous‑scanning method - single scan baseline adjustment and direct heat‑flow comparison.
  • Stepwise‑scanning method - temperature range divided into intervals; integrate heat flow ΔQ over ΔT for each step.
• Calibration
  • Calibration material of known cp is required; α‑alumina (≥99.9% purity) is typically used.
• Apparatus and consumables
  • DSC instrument per ISO 11357‑1; matching crucibles for sample and calibration material.
  • Crucible mass difference shall not exceed 0.1 mg.
• Data processing
  • Baseline adjustment, subtraction of blank run, and formulae to calculate cp from heat flow, heating rate and sample mass.
  • Guidance on numerical rounding, precision, bias and reporting.
• Specimen preparation & conditions
  • Requirements for specimen mass, conditioning and test temperatures are provided to ensure reproducibility.

Applications and users

EN ISO 11357-4:2021 is used where accurate cp data for plastics are needed:

• R&D and materials science - thermal property databases, polymer formulation and phase behaviour studies.
• Product and process engineering - thermal modelling, heat‑transfer calculations, injection‑moulding and extrusion process design.
• Quality control & certification - batch verification, specification compliance and acceptance testing.
• Instrument manufacturers & calibration labs - method validation and calibration services. Keywords: EN ISO 11357-4:2021, differential scanning calorimetry, specific heat capacity, DSC, plastics cp measurement.

Related standards

• ISO 11357‑1 - DSC general principles (referenced for apparatus and terminology).
• ISO 472 - Plastics vocabulary.
• ISO 80000‑1 - Quantities and units.
• Other parts of the ISO 11357 series address melting, crystallization and thermal transitions relevant to DSC testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2021
Nadomešča:
SIST EN ISO 11357-4:2014
Polimerni materiali - Diferenčna dinamična kalorimetrija (DSC) - 4. del:
Ugotavljanje specifične toplotne kapacitete (ISO 11357-4:2021)
Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat
capacity (ISO 11357-4:2021)
Kunststoffe - Dynamische Differenz-Thermoanalyse (DSC) - Teil 4: Bestimmung der
spezifischen Wärmekapazität (ISO 11357-4:2021)
Plastiques - Analyse calorimétrique différentielle (DSC) - Partie 4: Détermination de la
capacité thermique massique (ISO 11357-4:2021)
Ta slovenski standard je istoveten z: EN ISO 11357-4:2021
ICS:
17.200.10 Toplota. Kalorimetrija Heat. Calorimetry
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 11357-4
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2021
EUROPÄISCHE NORM
ICS 83.080.01 Supersedes EN ISO 11357-4:2014
English Version
Plastics - Differential scanning calorimetry (DSC) - Part 4:
Determination of specific heat capacity (ISO 11357-
4:2021)
Plastiques - Analyse calorimétrique différentielle (DSC) Kunststoffe - Dynamische Differenz-Thermoanalyse
- Partie 4: Détermination de la capacité thermique (DSC) - Teil 4: Bestimmung der spezifischen
massique (ISO 11357-4:2021) Wärmekapazität (ISO 11357-4:2021)
This European Standard was approved by CEN on 29 January 2021.

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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11357-4:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 11357-4:2021) 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 August 2021, and conflicting national standards shall
be withdrawn at the latest by August 2021.
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 11357-4:2014.
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 11357-4:2021 has been approved by CEN as EN ISO 11357-4:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 11357-4
Third edition
2021-02
Plastics — Differential scanning
calorimetry (DSC) —
Part 4:
Determination of specific heat
capacity
Plastiques — Analyse calorimétrique différentielle (DSC) —
Partie 4: Détermination de la capacité thermique massique
Reference number
ISO 11357-4:2021(E)
©
ISO 2021
ISO 11357-4:2021(E)
© ISO 2021
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 11357-4:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
4.1 General . 2
4.2 Continuous-scanning method . 3
4.3 Stepwise-scanning method . 4
5 Apparatus . 4
6 Test specimen . 4
7 Test conditions and specimen conditioning . 5
8 Procedure. 5
8.1 Selection of crucibles . 5
8.2 Setting up the apparatus and adjustment of isothermal baselines . 5
8.3 Measurement of specific heat capacity of calibration material . 6
8.4 Specimen run . 8
9 Determination of specific heat capacities . 8
9.1 Calculation of specific heat capacities. 8
9.2 Numerical rounding of the results . 8
10 Precision and bias . 8
11 Test report . 9
Annex A (informative) Approximate expression of the specific heat capacity of pure
[3][4]
α-alumina .10
Bibliography .12
ISO 11357-4:2021(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 5, Physical-
chemical properties, 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 third edition cancels and replaces the second edition (ISO 11357-4:2014), which has been
technically revised. The main changes compared to the previous edition are as follows:
— the measurement procedure has been updated;
— reference data of α-alumina have been updated.
A list of all parts in the ISO 11357 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 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 11357-4:2021(E)
Plastics — Differential scanning calorimetry (DSC) —
Part 4:
Determination of specific heat capacity
1 Scope
This document specifies methods for determining the specific heat capacity of plastics by differential
scanning calorimetry.
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 472, Plastics — Vocabulary
ISO 11357-1, Plastics — Differential scanning calorimetry (DSC) — Part 1: General principles
ISO 80000-1, Quantities and units — Part 1: General
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472, ISO 11357-1 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
calibration material
material of known specific heat capacity
Note 1 to entry: Usually, α-alumina (such as synthetic sapphire) of 99,9 % or higher purity is used as the
calibration material.
3.2
specific heat capacity at constant pressure
c
p
quantity of heat necessary to raise the temperature of unit mass of material by 1 K at constant pressure
Note 1 to entry: It is given by the following formula:
dQ
 
−−11
cm==⋅⋅Cm
 
pp
dT 
p
where
ISO 11357-4:2021(E)
c is the specific heat capacity and is expressed in kilojoules per kilogram per K
p
−1 −1 −1 −1
(kJ⋅kg ⋅K ) or in joules per gram per K (J⋅g ⋅K ); subscript p indicates an isobaric
process;
m is the mass of material, expressed in kilogram (kg) or gram (g);
−1
C is the total heat capacity and is expressed in kilojoules per K (kJ⋅K ) or in joules per K
p
−1
(J⋅K ); subscript p indicates an isobaric process;
dQ is the quantity of heat dQ necessary to raise the temperature of the material by dT,
 
 
−1 −1
expressed in kilojoules per K (kJ⋅K ) or in joules per K (J⋅K ), measured at constant
dT
 
p
pressure.
This formula is valid in a temperature range w
...