Fine ceramics (advanced ceramics, advanced technical ceramics) - Thermophysical properties of ceramic composites - Determination of specific heat capacity (ISO 19628:2017)

ISO 19628:2017 describes two methods for the determination of the specific heat capacity of ceramic matrix composites with continuous reinforcements (1D, 2D, 3D).
Unidirectional (1D), bi-directional (2D) and tridirectional (XD, with 2 < x ≤ 3).
The two methods are:
- method A: drop calorimetry;
- method B: differential scanning calorimetry.
They are applicable from ambient temperature up to a maximum temperature, depending on the method: method A can be used up to 2 250 K, while method B is limited to 1 900 K.
NOTE Method A is limited to the determination of an average value of the specific heat capacity over a given temperature range and can give a larger spread of results.

Hochleistungskeramik - Thermophysikalische Eigenschaften von keramischen Verbundwerkstoffen - Bestimmung der spezifischen Wärmekapazität (ISO 19628:2017)

Dieses Dokument legt zwei Verfahren zur Bestimmung der spezifischen Wärmekapazität von keramischen Verbundwerkstoffen mit Endlos-Faserverstärkung (1D, 2D, 3D) fest.
Unidirektional (1D), bidirektional (2D) und tridirektional (XD, mit 2 < x <- 3).
Die beiden Verfahren sind:
- Verfahren A: Fallkalorimetrie;
- Verfahren B: dynamische Differenz-Kalorimetrie.
Die Verfahren sind von Umgebungstemperatur bis zu einer verfahrensabhängigen Höchsttemperatur anwendbar: Verfahren A kann bis 2 250 K angewendet werden, während Verfahren B auf Temperaturen bis 1 900 K beschränkt ist.
ANMERKUNG Verfahren A ist auf die Bestimmung einer mittleren spezifischen Wärmekapazität für einen vorgegebenen Temperaturbereich beschränkt und kann daher zu größeren Messwertstreuungen führen.

Céramiques techniques - Propriétés thermophysiques des composites céramiques - Détermination de la capacité thermique specifique (ISO 19628:2017)

L'ISO 19628:2017 décrit deux méthodes pour la détermination de la capacité thermique spécifique des composites à matrice céramique à renforts continus (1D, 2D, 3D).
Les matrices sont à renforts unidirectionnels (1D), bidirectionnels (2D) et tridirectionnels (XD, avec 2 < x ≤ 3).
Les deux méthodes sont:
- méthode A: calorimétrie à chute;
- méthode B: calorimétrie différentielle à balayage.
Elles sont applicables depuis la température ambiante jusqu'à une température maximale qui dépend de la méthode: la méthode A peut être utilisée jusqu'à 2 250 K, tandis que la méthode B est limitée à 1 900 K.
NOTE La méthode A se limite à la détermination d'une valeur moyenne de la capacité thermique spécifique dans un intervalle de température donné et peut conduire à une dispersion importante des résultats.

Fina keramika (sodobna keramika, sodobna tehnična keramika) - Termofizikalne lastnosti keramičnih kompozitov - Ugotavljanje specifične toplotne kapacitete (ISO 19628:2017)

General Information

Status
Published
Public Enquiry End Date
20-Jan-2021
Publication Date
16-Mar-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Mar-2021
Due Date
16-May-2021
Completion Date
17-Mar-2021

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SLOVENSKI STANDARD
SIST EN ISO 19628:2021
01-maj-2021
Nadomešča:
SIST EN 1159-3:2004
SIST EN 1159-3:2004/AC:2007
SIST EN 1159-3:2004/AC:2008
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Termofizikalne

lastnosti keramičnih kompozitov - Ugotavljanje specifične toplotne kapacitete (ISO

19628:2017)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Thermophysical
properties of ceramic composites - Determination of specific heat capacity (ISO
19628:2017)
Hochleistungskeramik - Thermophysikalische Eigenschaften von keramischen
Verbundwerkstoffen - Bestimmung der spezifischen Wärmekapazität (ISO 19628:2017)
Céramiques techniques - Propriétés thermophysiques des composites céramiques -
Détermination de la capacité thermique specifique (ISO 19628:2017)
Ta slovenski standard je istoveten z: EN ISO 19628:2021
ICS:
81.060.30 Sodobna keramika Advanced ceramics
SIST EN ISO 19628:2021 en,fr,de

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

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SIST EN ISO 19628:2021
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SIST EN ISO 19628:2021
EN ISO 19628
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2021
EUROPÄISCHE NORM
ICS 81.060.30 Supersedes EN 1159-3:2003
English Version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Thermophysical properties of ceramic
composites - Determination of specific heat capacity (ISO
19628:2017)

Céramiques techniques - Propriétés thermophysiques Hochleistungskeramik - Thermophysikalische

des composites céramiques - Détermination de la Eigenschaften von keramischen Verbundwerkstoffen -

capacité thermique specifique (ISO 19628:2017) Bestimmung der spezifischen Wärmekapazität (ISO

19628:2017)
This European Standard was approved by CEN on 22 February 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 19628:2021 E

worldwide for CEN national Members.
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SIST EN ISO 19628:2021
EN ISO 19628:2021 (E)
Contents Page

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

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SIST EN ISO 19628:2021
EN ISO 19628:2021 (E)
European foreword

The text of ISO 19628:2017 has been prepared by Technical Committee ISO/TC 206 "Fine ceramics” of

the International Organization for Standardization (ISO) and has been taken over as EN ISO 19628:2021

by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secretariat of which is held by

DIN.

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 September 2021, and conflicting national standards

shall be withdrawn at the latest by September 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 1159-3:2003.

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 19628:2017 has been approved by CEN as EN ISO 19628:2021 without any modification.

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SIST EN ISO 19628:2021
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SIST EN ISO 19628:2021
INTERNATIONAL ISO
STANDARD 19628
First edition
2017-04
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Thermophysical properties of ceramic
composites — Determination of
specific heat capacity
Céramiques techniques — Propriétés thermophysiques des composites
céramiques — Détermination de la capacité thermique specifique
Reference number
ISO 19628:2017(E)
ISO 2017
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SIST EN ISO 19628:2021
ISO 19628:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 19628:2021
ISO 19628:2017(E)
Contents Page

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

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

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

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

4 Method A – drop calorimetry................................................................................................................................................................... 2

4.1 Principle ........................................................................................................................................................................................................ 2

4.2 Apparatus .................................................................................................................................................................................................... 2

4.3 Standard reference materials ..................................................................................................................................................... 2

4.4 Test specimens ........................................................................................................................................................................................ 2

4.5 Calibration of calorimeter ............................................................................................................................................................. 3

4.5.1 General...................................................................................................................................................................................... 3

4.5.2 Electrical calibration .................................................................................................................................................... 3

4.5.3 Calibration using standard reference material ...................................................................................... 3

4.6 Test procedures ...................................................................................................................................................................................... 3

4.6.1 Test without a crucible ............................................................................................................................................... 3

4.6.2 Test with a crucible ........................................................................................................................................................ 4

4.6.3 Description of test........................................................................................................................................................... 4

4.7 Calculations ................................................................................................................................................................................................ 5

4.7.1 General...................................................................................................................................................................................... 5

4.7.2 Determination of the calorimetric calibration factor ....................................................................... 5

4.7.3 Determination of mean specific heat capacity C .............................................................

5 Method B – differential scanning calorimetry ....................................................................................................................... 6

5.1 Principle ........................................................................................................................................................................................................ 6

5.1.1 General...................................................................................................................................................................................... 6

5.1.2 Stepwise heating method ......................................................................................................................................... 6

5.1.3 Continuous heating method ................................................................................................................................... 7

5.2 Apparatus .................................................................................................................................................................................................... 8

5.3 Standard reference materials, SRM ....................................................................................................................................... 8

5.4 Test specimens ........................................................................................................................................................................................ 8

5.5 Temperature calibration ................................................................................................................................................................. 8

5.6 Test procedure for the determination of C ....................................................................................................................

p 8

5.6.1 General...................................................................................................................................................................................... 8

5.6.2 Method 1: Measurements requiring the knowledge of the K factor .................................... 9

5.6.3 Method 2: measurements requiring the use of a reference standard

material (SRM) ...............................................................................................................................................................11

5.7 Calculation of results ......................................................................................................................................................................14

5.7.1 Method requiring the knowledge of the K factor ..............................................................................14

5.7.2 Method using an SRM ...............................................................................................................................................16

6 Test report ................................................................................................................................................................................................................17

Annex A (normative) Drop calorimetry – determination of the calibration factor using

standard reference material .................................................................................................................................................................18

Annex B (informative) Standard reference material ........................................................................................................................20

Annex C (informative) Materials for calorimeter calibrations ...............................................................................................25

Bibliography .............................................................................................................................................................................................................................26

© ISO 2017 – All rights reserved iii
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SIST EN ISO 19628:2021
ISO 19628:2017(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: w w w . i s o .org/ iso/ foreword .html
This document was prepared by Technical Committee ISO/TC 206, Fine ceramics.
iv © ISO 2017 – All rights reserved
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SIST EN ISO 19628:2021
INTERNATIONAL STANDARD ISO 19628:2017(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Thermophysical properties of ceramic
composites — Determination of specific heat capacity
1 Scope

This document describes two methods for the determination of the specific heat capacity of ceramic

matrix composites with continuous reinforcements (1D, 2D, 3D).

Unidirectional (1D), bi-directional (2D) and tridirectional (XD, with 2 < x ≤ 3).

The two methods are:
— method A: drop calorimetry;
— method B: differential scanning calorimetry.

They are applicable from ambient temperature up to a maximum temperature, depending on the

method: method A can be used up to 2 250 K, while method B is limited to 1 900 K.

NOTE Method A is limited to the determination of an average value of the specific heat capacity over a given

temperature range and can give a larger spread of results.
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 19634, Fine ceramics (advanced ceramics, advanced technical ceramics) — Ceramic composites —

Notations and symbols
IEC 60584-1, Thermocouples — Part 1: Reference tables
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 19634 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 http:// www .iso .org/ obp
3.1
specific heat capacity

amount of heat required to raise the temperature of a mass unit of material by 1 K at constant

temperature and pressure
1 dQ
C =
mdT
where Q is the heat required for a test-piece of mass m.
© ISO 2017 – All rights reserved 1
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SIST EN ISO 19628:2021
ISO 19628:2017(E)
3.2
mean specific heat capacity

amount of heat required to raise the temperature of a mass unit of a material from temperature T to

temperature T at a constant pressure, divided by the temperature increase (T – T ) expressed in K

2 2 1
3.3
representative volume element
RVE
minimum volume which is representative of the material considered
4 Method A – drop calorimetry
4.1 Principle

A test piece is dropped from a conditioning chamber at a constant temperature T to another chamber

at a constant temperature T .

The mean specific heat capacity is determined from the measured amount of heat required to maintain

the temperature constant in the second chamber. Transfer of the test piece shall be done under

conditions as close as possible to adiabatic conditions.
4.2 Apparatus

4.2.1 Drop calorimeter, there are several types of drop calorimeters. They include one (or more)

conditioning chambers and measuring chambers, which can be operated under controlled atmosphere

and which are all equipped with a temperature control system that allows a temperature stability of less

than 1 K.

The conditioning chamber shall have a homogeneous temperature zone size greater than the test

specimen size. The measuring chamber shall have a homogeneous temperature zone of a sufficient

length to accept several specimens and a sufficient thermal inertia to limit the temperature disturbance,

due to the drop.
Heat transfer by radiation during the drop shall be avoided as far as possible.

4.2.2 Balance, with an accuracy of 0,1 mg for test pieces over 10 mg and an accuracy of 0,01 mg for

test pieces below 10 mg.

4.2.3 Temperature detectors, thermocouples in accordance with IEC 60584-1 shall be used for the

measurement of temperature up to 1 920 K.

For higher temperatures, infrared detectors or any other suitable device may be used.

4.2.4 Data acquisition system, the sampling period during the test shall be less than 0,5 s.

4.3 Standard reference materials

Standard reference materials which can be used for calibration purposes are listed in Annex B.

4.4 Test specimens
The test specimens shall be representative of the material.
2 © ISO 2017 – All rights reserved
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SIST EN ISO 19628:2021
ISO 19628:2017(E)

This criterion is generally met by test specimens containing the maximum number of representative

volume elements compatible with the volume of the crucible. If this number is less than five, several

solutions are possible:

a) the test specimens should have an exact number of representative volume elements;

b) the material should be cut into specimens; a number of similar test specimens should be tested and

an average value determined.
4.5 Calibration of calorimeter
4.5.1 General

Calibration of calorimeters may be done according to two different methods. The first consists of

dissipating a known amount of thermal power using a calibrated resistor introduced in the second

chamber of the calorimeter. In the second method a reference specimen with known specific heat

capacity is dropped according to the procedure described in 4.6.
4.5.2 Electrical calibration

The calibration factor is the ratio of a known amount of thermal power dissipated in the resistor to the

steady-state calorimetric output signal, and is measured at temperature T .
NOTE 1 The method using power dissipation in a resistor is limited to 1 350 K.

NOTE 2 This method can only be used if the sensitivity of the calorimeter is not affected by the filling of the

measuring chamber.
4.5.3 Calibration using standard reference material

This calibration is called “drop calibration”. A specimen made of a standard reference material with a

known specific heat capacity is dropped according to the test procedures described in 4.6. (See Annex B

for standard reference material.) The calibration factor is determined according to Annex A.

4.6 Test procedures
4.6.1 Test without a crucible
4.6.1.1 Test with drop calibration

The test without a crucible and with drop calibration is done in the following order:

R, T, R, T, R, T, R
where
R is the test of standard reference material;
T is the test of test specimen.
Carry out each test as described in 4.6.3.
4.6.1.2 Test with electrical calibration

The test without a crucible and with calibration using power dissipation in a resistor is done in the

following order:
— calibration of calorimeter;
© ISO 2017 – All rights reserved 3
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SIST EN ISO 19628:2021
ISO 19628:2017(E)
— test on three test specimens.
Carry out each test as described in 4.6.3.

NOTE The avoidance of interaction between the test specimen and the calorimetric conditioning and

measuring chambers can require the use of a sealed crucible.
4.6.2 Test with a crucible
4.6.2.1 General

The mass of all empty crucibles used for the test shall not differ by more than 5 %.

4.6.2.2 Test with drop calibration

The test with a crucible and with drop calibration is carried out in the following order:

C, C + R, C + T, C, C + R, C + T, C, C + R, C + T, C
where
C is the test with the empty crucible;
C + R is the test of crucible plus standard reference material;
C + T is the test of crucible plus test specimen.
Carry out each test as described in 4.6.3.
4.6.2.3 Test with electrical calibration

The test with a crucible and with calibration using power dissipation in a resistor is done in the

following order:
— calibration of calorimeter;
— carry out the following sequence:
C, C + T, C, C + T, C, C + T, C
where
C is the test with the empty crucible;
C + T is the test with crucible plus test specimen.
Carry out each test as described in 4.6.3.
4.6.3 Description of test

The test piece (test specimen, standard material or empty crucible) and reference material shall be

dried at (110 ± 5) °C until the difference in weight of two successive weighings is lower than 0,2 mg:

— measure the mass when a crucible is not used with an accuracy of ± 0,1 mg or ± 0,1 %, whichever is

the smaller;

— when a crucible is used, measure the mass of each assembly dropped (empty crucible, crucible and

standard reference material, crucible and test specimen);
4 © ISO 2017 – All rights reserved
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SIST EN ISO 19628:2021
ISO 19628:2017(E)

— place the test piece (test specimen, standard material or empty crucible) in the conditioning chamber

at temperature T and wait for a sufficient period (around 15 min) to reach thermal equilibrium of

the test piece with its environment;
— measure T and T ;
1 2
— start recording the calorimetric signal before the test piece is dropped;
— drop the test piece;
— stop the recording when the steady-state output signal is reached.
4.7 Calculations
4.7.1 General

The change in heat Q corresponding to the drop of the test piece is related to the area A under the

calorimetric output signal by the following equation.
QK=⋅A
where K is the calorimeter calibration factor.
4.7.2 Determination of the calorimetric calibration factor
4.7.2.1 Electrical calibration
See Annex A.
heat dissipated H
K = ==
area under the calorimetric output signal A
4.7.2.2 With standard reference material
See Annex B.
4.7.3 Determination of mean specific heat capacity C
The mean specific heat capacity is determined using the following formula:
QT( ,)T
i1 2
CT(=,)T
p1 2
m (TT− )
i 21
where
T is the initial temperature at which test pieces are conditioned;
T is the calorimeter temperature;
Q (T ,T ) is the heat variation between T and T ;
i 1 2 1 2
m is the mass of the test piece, determined by weighing;
is the mean specific heat capacity between T and T .
1 2
CT(,T )
p1 2
© ISO 2017 – All rights reserved 5
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SIST EN ISO 19628:2021
ISO 19628:2017(E)
The subscript i has a different meaning depending on the type of test piece:
— i = c for an empty crucible;
— i = t for a test piece;
— i = t + c for a test piece and crucible.
without crucible
KA⋅
C =
mT −T
t 21
with crucible
KA( −A )
c + tc
C =
mT( −T )
t2 1
where
A is the value of integration of calorimetric output signal of test specimen;
A is the value of integration of calorimetric output signal of crucible;

A is the value of integration of calorimetric output signal of test specimen plus crucible.

c+t
5 Method B – differential scanning calorimetry
5.1 Principle
5.1.1 General

The method consists in measuring the difference in power needed to raise the temperature of the test

specimen in its crucible and of an empty identical crucible using the same heating programme, which

may be stepwise heating or continuous heating.

Stepwise heating allows only the determination of the mean specific heat capacity CT ,T over a

p1 2

temperature range (T ,T ), whereas continuous heating allows determination of the specific heat

1 2
capacity C at a given temperature.
5.1.2 Stepwise heating method

The mean specific heat capacity CT ,T is measured in a temperature interval defined by two

p1 2

isothermal levels, T and T . The heat, Q , which is necessary to change the temperature from T to T is

1 2 E 1 2

determined by integrating the thermal power, P , with respect to time. The corresponding heat, Q , is:

E E
6 © ISO 2017 – All rights reserved
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SIST EN ISO 19628:2021
ISO 19628:2017(E)
QP==dt ((mC TT,+))CC+ (TT− )
EE tp 12 co 21
where
m is the mass of the test specimen;
is the mean specific heat capacity of the test specimen;
CT ,T
p1 2
C is the heat capacity of the calorimeter;
C is the heat capacity of the crucible.

Another experiment for the determination of the baseline is performed using an identical imposed

heating sequence with the empty crucible. The corresponding heat, Q , is given by:

QP==dt CC+( TT− )
BB  co 21
From the above equations, the mean specific heat capacity can be calculated as:
QQ−
CT(=−T )
p1 2
mT( −T )
t2 1
5.1.3 Continuous heating method

Temperature is increased linearly versus time at a constant heating rate ß. Using the same notation as

in 5.1.2, the thermal power P supplied to the system at every moment is:
KS⋅= mC ++CC β
c+tt pc o

Another experiment for the determination of the baseline is performed with the empty crucible. The

corresponding thermal power is given by
KS⋅ =(CC+)β
cc o
The specific heat capacity can be calculated from:
KS( −)S
c+tc
C =
m β
where
K is the calibration factor;
S , S are the output signals;
c c+t
K ⋅ S and K ⋅ S are the thermal powers supplied to the system.
c c+t
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SIST EN ISO 19628:2021
ISO 19628:2017(E)
5.2 Apparatus
5.2.1 Differential scanning calorimeter.

5.2.1.1 There are two types of differential scanning calorimeters operating on power compensation

and heat flux principles, both designed to operate und
...

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