EN ISO 11357-4:2013
(Main)Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat capacity (ISO 11357-4:2005)
Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat capacity (ISO 11357-4:2005)
ISO 11357-4:2005 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 11357-4:2005)
Dieser Teil von ISO 11357 legt Verfahren zur Bestimmung der spezifischen Wärmekapazität von Kunststoffen mittels Dynamischer Differenz-Thermoanalyse (Dynamischer Differenzkalorimetrie) fest.
Plastiques - Analyse calorimétrique différentielle (DSC) - Partie 4: Détermination de la capacité thermique massique (ISO 11357-4:2005)
L'ISO 11357-4:2005 spécifie des méthodes de détermination de la capacité thermique massique des plastiques par analyse calorimétrique différentielle.
Polimerni materiali - Dinamična diferenčna kalorimetrija (DSC) - 4. del: Ugotavljanje specifične toplotne kapacitete (ISO 11357-4:2005)
Ta del standarda ISO 11357 navaja metode za ugotavljanje specifične toplotne kapacitete polimernih materialov z dinamično diferenčno kalorimetrijo.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2013
3ROLPHUQLPDWHULDOL'LQDPLþQDGLIHUHQþQDNDORULPHWULMD '6& GHO
8JRWDYOMDQMHVSHFLILþQHWRSORWQHNDSDFLWHWH ,62
Plastics - Differential scanning calorimetry (DSC) - Part 4: Determination of specific heat
capacity (ISO 11357-4:2005)
Kunststoffe - Dynamische Differenz-Thermoanalyse (DSC) - Teil 4: Bestimmung der
spezifischen Wärmekapazität (ISO 11357-4:2005)
Plastiques - Analyse calorimétrique différentielle (DSC) - Partie 4: Détermination de la
capacité thermique massique (ISO 11357-4:2005)
Ta slovenski standard je istoveten z: EN ISO 11357-4:2013
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.
EUROPEAN STANDARD
EN ISO 11357-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2013
ICS 83.080.01
English Version
Plastics - Differential scanning calorimetry (DSC) - Part 4:
Determination of specific heat capacity (ISO 11357-4:2005)
Plastiques - Analyse calorimétrique différentielle (DSC) - Kunststoffe - Dynamische Differenz-Thermoanalyse (DSC)
Partie 4: Détermination de la capacité thermique massique - Teil 4: Bestimmung der spezifischen Wärmekapazität
(ISO 11357-4:2005) (ISO 11357-4:2005)
This European Standard was approved by CEN on 22 December 2012.
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
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Kingdom.
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© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11357-4:2013: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
The text of ISO 11357-4:2005 has been prepared by Technical Committee ISO/TC 61 “Plastics” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 11357-4:2013 by
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 July 2013, and conflicting national standards shall be withdrawn at the
latest by July 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organisations 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 11357-4:2005 has been approved by CEN as a EN ISO 11357-4:2013 without any
modification.
INTERNATIONAL ISO
STANDARD 11357-4
First edition
2005-09-15
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 11357-4:2005(E)
©
ISO 2005
ISO 11357-4:2005(E)
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ii © ISO 2005 – All rights reserved
ISO 11357-4:2005(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Principle. 2
5 Apparatus . 3
6 Test specimen . 4
7 Test conditions and specimen conditioning . 4
8 Procedure . 4
9 Determination of specific heat capacities. 7
10 Precision and bias . 7
11 Test report . 7
Annex A (informative) An approximate expression of the specific heat capacity of pure α-alumina . 8
Bibliography . 10
ISO 11357-4:2005(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 11357-4 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5,
Physical-chemical properties.
ISO 11357 consists of the following parts, under the general title Plastics — Differential scanning calorimetry
(DSC):
⎯ Part 1: General principles
⎯ Part 2: Determination of glass transition temperature
⎯ Part 3: Determination of temperature and enthalpy of melting and crystallization
⎯ Part 4: Determination of specific heat capacity
⎯ Part 5: Determination of characteristic reaction-curve temperatures and times, enthalpy of reaction and
degree of conversion
⎯ Part 6: Determination of oxidation induction time
⎯ Part 7: Determination of crystallization kinetics
iv © ISO 2005 – All rights reserved
INTERNATIONAL STANDARD ISO 11357-4:2005(E)
Plastics — Differential scanning calorimetry (DSC) —
Part 4:
Determination of specific heat capacity
1 Scope
This part of ISO 11357 specifies methods for determining the specific heat capacity of plastics by differential
scanning calorimetry.
2 Normative references
The following referenced documents are indispensable for the application 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 11357-1:1997, Plastics — Differential scanning calorimetry (DSC) — Part 1: General principles
ISO 31-0:1992, Quantities and units — Part 0: General principles
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.
3.1
calibration material
material of known specific heat capacity
NOTE 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 It is given by the following equation:
–1 –1
c = m C = m (dQ/dT) (1)
p p p
where
m is the mass of material;
C is the heat capacity;
p
dQ is the quantity of heat necessary to raise the temperature of the material by dT;
ISO 11357-4:2005(E)
subscript p indicates an isobaric process;
−1 −1 −1 −1
c is expressed in kilojoules per kilogram per K (kJ⋅kg ⋅K ) or in joules per gram per K (J⋅g ⋅K ).
p
This equation is valid in a temperature range where a material shows no first-order phase transition.
−1
(dQ/dT) = (dt/dT) × (dQ/dt) = (heating rate) × (heat flow rate) (2)
NOTE 2 At phase transitions, there is a discontinuity in the heat capacity. Part of the heat is consumed to produce a
material state of higher energy and it is not all used in raising the temperature. For this reason, the specific heat can only
be determined properly outside regions of phase transitions.
4 Principle
4.1 General
Each measurement consists of three runs at the same scanning rate (see Figure 1):
1) a blank run (empty pans in sample and reference holders);
2) a calibration run (calibration material in sample holder pan and empty pan in reference holder);
3) a specimen run (specimen in sample holder pan and empty pan in reference holder).
Key
X temperature T or time t
1 blank run
2 calibration run
3 specimen run
I isothermal baseline at start temperature T
s
II isothermal baseline at end temperature T
f
Figure 1 — Schematic drawing of typical DSC curves for specific heat capacity measurement
(blank, calibration and specimen runs) after baseline adjustment
2 © ISO 2005 – All rights reserved
ISO 11357-4:2005(E)
4.2 Continuous-scanning method
Based on the DSC principle (see ISO 11357-1) and the definition of specific heat capacity given in 3.2, the
following relations can be obtained:
sp sp
mc⋅∝P −P (3)
p specimen run blank run
cal cal
mc⋅∝P −P (4)
p calibration run blank run
where
P is the heat flow rate (dQ/dt);
superscripts sp and cal represent specimen and calibration material, respectively (see Figure 1).
sp
When P , P and P are measured, c can
...
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