SIST EN ISO 22007-3:2012

SLOVENSKI STANDARD
01-marec-2012
Polimerni materiali - Ugotavljanje toplotne prevodnosti in toplotne razprševalnosti
- 3. del: Metoda analize s toplotnim valom (ISO 22007-3:2008)
Plastics - Determination of thermal conductivity and thermal diffusivity - Part 3:
Temperature wave analysis method (ISO 22007-3:2008)
Kunststoffe - Bestimmung der Wärmeleitfähigkeit und der Temperaturleitfähigkeit - Teil 3:
Temperaturwellen-Analysenverfahren (ISO 22007-3:2008)
Plastiques - Détermination de la conductivité thermique et de la diffusivité thermique -
Partie 3: Méthode par analyse de l'oscillation de la température (ISO 22007-3:2008)
Ta slovenski standard je istoveten z: EN ISO 22007-3:2012
ICS:
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 22007-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2012
ICS 83.080.01
English Version
Plastics - Determination of thermal conductivity and thermal
diffusivity - Part 3: Temperature wave analysis method (ISO
22007-3:2008)
Plastiques - Détermination de la conductivité thermique et Kunststoffe - Bestimmung der Wärmeleitfähigkeit und der
de la diffusivité thermique - Partie 3: Méthode par analyse Temperaturleitfähigkeit - Teil 3: Temperaturwellen-
de l'oscillation de la température (ISO 22007-3:2008) Analysenverfahren (ISO 22007-3:2008)
This European Standard was approved by CEN on 24 December 2011.

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
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EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

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© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22007-3:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
The text of ISO 22007-3:2008 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 22007-3:2012 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 2012, and conflicting national standards shall be withdrawn at the
latest by July 2012.
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 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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 22007-3:2008 has been approved by CEN as a EN ISO 22007-3:2012 without any
modification.
INTERNATIONAL ISO
STANDARD 22007-3
First edition
2008-12-15
Plastics — Determination of thermal
conductivity and thermal diffusivity —
Part 3:
Temperature wave analysis method
Plastiques — Détermination de la conductivité thermique et de la
diffusivité thermique —
Partie 3: Méthode par analyse de l'oscillation de la température

Reference number
ISO 22007-3:2008(E)
©
ISO 2008
ISO 22007-3:2008(E)
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ii © ISO 2008 – All rights reserved

ISO 22007-3:2008(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Symbols and units.2
5 Principle.2
6 Apparatus .2
6.1 General.2
6.2 Constant-temperature enclosure .3
6.3 Heater and sensor elements.3
6.4 Heating circuit.5
6.5 Measurement circuit.5
6.6 Phase-shift measurement device.5
6.7 Devices for measuring the specimen temperature .5
7 Test specimen.6
7.1 Dimensions.6
7.2 Thickness .6
7.3 Specimen-backing plates.6
8 Procedure .6
9 Analysis of results.7
10 Calibration and verification of apparatus and method .8
10.1 Calibration .8
10.2 Verification .8
11 Precision and bias .9
11.1 Uncertainty .9
11.2 Repeatability.9
12 Test report .9
Annex A (informative) Mathematical background to temperature wave analysis .10
Annex B (informative) Typical thermal-diffusivity data for a typical polyimide.11
Annex C (informative) Example of frequency-thickness relationships required for acceptable
measurements.12
Annex D (informative) Numerical simulations of the phase shift, ∆θ, as a function of kd and ξ .14
Annex E (informative) Examples of uncertainties in thermal-diffusivity measurements .15
Bibliography .16

ISO 22007-3:2008(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 22007-3 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-
chemical properties.
ISO 22007 consists of the following parts, under the general title Plastics — Determination of thermal
conductivity and thermal diffusivity:
⎯ Part 1: General principles
⎯ Part 2: Transient plane heat source (hot disc) method
⎯ Part 3: Temperature wave analysis method
⎯ Part 4: Laser flash method
iv © ISO 2008 – All rights reserved

ISO 22007-3:2008(E)
Introduction
Thermal-transport properties of plastics are indispensable not only in the plastics industry but also in other
fields. Plastics are used in various manufacturing processes in new application areas, such as
nanotechnologies, and in the biomedical industry. Accurate but simple small-scale measurements are
required which can be performed quickly.
High sensitivity and excellent temperature resolution are peculiar to the modulation techniques used for the
measurement of thermal-transport properties. Temperature wave analysis is a method of measuring the
thermal diffusivity of thin specimens and is also suitable for use with small specimens.

INTERNATIONAL STANDARD ISO 22007-3:2008(E)

Plastics — Determination of thermal conductivity and thermal
diffusivity —
Part 3:
Temperature wave analysis method
1 Scope
This part of ISO 22007 specifies a temperature wave analysis method for the determination of the thermal
diffusivity of thin films and plates of plastics in the through-thickness direction. The method can be used on
plastics in either the solid or molten state, and having either an isotropic or an orthotropic structure.
−8 2 −1 −4 2 −1
The method covers values of the thermal diffusivity, α, in the range 1,0 × 10 m ⋅s < α < 1,0 × 10 m ⋅s .
Measurements can be performed either in air or in another atmosphere, e.g. an inert gas, at atmospheric
pressure or at other, reduced or elevated, pressures, or under a vacuum, at a variety of temperatures.
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 22007-1, Plastics — Determination of thermal conductivity and thermal diffusivity — Part 1: General
principles
ISO 80000-5, Quantities and units — Part 5: Thermodynamics
ISO/IEC Guide 98-3, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in
measurement (GUM:1995)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472, ISO 22007-1 and ISO 80000-5
and the following apply.
3.1
temperature wave
temperature oscillation produced by a power-modulated heat source
3.2
phase shift
∆θ
phase difference of the temperature wave between the front and rear surfaces of a specimen
NOTE A delay is defined as a negative phase shift.
ISO 22007-3:2008(E)
4 Symbols and units
Symbol Meaning Unit
1/2
A
slope of a plot of phase shift, ∆θ, versus the square root of the angular frequency, ω, of s
the temperature wave
C heat capacity per unit volume
J/(m ⋅K)
d
thickness of specimen m
f frequency of temperature wave Hz
1/2
k
the quantity (ω /2α)
thermal diffusivity
α
m /s
thermal conductivity
λ W/(m⋅K)
angular frequency of temperature wave rad/s
ω
rad/s
ω angular frequency that satisfies the condition kd = 1
c
5 Principle
5.1 Temperature wave analysis is a method of measuring thermal diffusivity in the through-thickness
direction of a thin, flat specimen by measuring the phase shift of a temperature wave between the front and
rear surfaces of the specimen.
5.2 Electrical resistors, sputtered or contacted on both surfaces of the specimen, are used, one as a heater
to generate the temperature wave by a.c. Joule heating and the other as a thermometer to detect the
temperature wave.
5.3 This method involves analysis of the phase shift of the temperature wave, which is propagated through
the specimen, as a function of the square root of the angular frequency of the temperature wave.
NOTE Further details of the theoretical background are given in Annex A and the references in the Bibliography.
6 Apparatus
6.1 General
The apparatus shall be designed to determine the thermal diffusivity as described in Clause 5 and shall
consist of the following main components. An example of a suitable apparatus is shown in Figure 1.
2 © ISO 2008 – All rights reserved

ISO 22007-3:2008(E)
Key
1 specimen 6 constant-temperature enclosure 11 personal computer
2 heater 7 thermometer 12 lock-in amplifier
3 sensor 8 temperature controller 13 digital multimeter
4 backing plate 9 function synthesizer 14 bias current circuit
5 specimen holder 10 reference signal
Figure 1 — Schematic diagram showing an example of a suitable apparatus
6.2 Constant-temperature enclosure
The temperature range of the constant-temperature enclosure shall be appropriate to the materials to be
tested.
It shall be possible to control the enclosure temperature such that the specimen temperature does not change
by more than ± 1 K throughout the duration of the measurement.
6.3 Heater and sensor elements
The heater element used to generate the temperature wave by passing alternating current through an
electrical resistor attached to the front surface of the specimen is assumed to be located at x = 0 (see
Figure 1).
The sensor element used to detect the temperature wave by measuring the oscillation of the resistance of an
electrical resistor attached to the rear surface of the specimen is assumed to be located a
...