ASTM D5930-17
(Test Method)Standard Test Method for Thermal Conductivity of Plastics by Means of a Transient Line-Source Technique
Standard Test Method for Thermal Conductivity of Plastics by Means of a Transient Line-Source Technique
SIGNIFICANCE AND USE
5.1 The relative simplicity of the test method makes it applicable for a wide range of materials (4, 5). The technique is capable of fast measurements, making it possible to take data before the materials suffer thermal degradation. Alternatively, it is possible to study the effect of compositional changes such as chemical reaction or aging (6). Short measurement times permit generation of large amounts of data with little effort. The line-source probe and the accompanying test specimen are small in size, making it possible to subject the sample to a wide range of test conditions. Because this test method does not contain a numerical precision and bias statement, it shall not be used as a referee test method in case of dispute.
SCOPE
1.1 This test method covers the determination of the thermal conductivity of plastics over a temperature range from –40 to 400°C. It is possible to measure the thermal conductivity of filled and unfilled thermoplastics, thermosets, and rubbers in the range from 0.08 to 2.0 W/m.K.
1.2 The values stated in SI units shall be regarded as standard.
1.3 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish proper safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 1: There is no known ISO equivalent to this test method.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D5930 − 17
Standard Test Method for
Thermal Conductivity of Plastics by Means of a Transient
1
Line-Source Technique
This standard is issued under the fixed designation D5930; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D883 Terminology Relating to Plastics
D2717 Test Method for Thermal Conductivity of Liquids
1.1 Thistestmethodcoversthedeterminationofthethermal
E177 Practice for Use of the Terms Precision and Bias in
conductivity of plastics over a temperature range from –40 to
ASTM Test Methods
400°C. It is possible to measure the thermal conductivity of
E1225 Test Method for Thermal Conductivity of Solids
filled and unfilled thermoplastics, thermosets, and rubbers in
Using the Guarded-Comparative-Longitudinal Heat Flow
the range from 0.08 to 2.0 W/m.K.
Technique
1.2 The values stated in SI units shall be regarded as
standard.
3. Terminology
1.3 This standard does not purport to address the safety
3.1 Definitions—Terminology used in this standard is in
concerns, if any, associated with its use. It is the responsibility
accordance with Terminology D883.
of the user of this standard to establish proper safety and
3.2 Definitions of Terms Specific to This Standard:
health practices and determine the applicability of regulatory
3.2.1 temperature transient, n—the temperature rise associ-
limitations prior to use.
ated with the perturbation of a system, initially at a uniform
NOTE 1—There is no known ISO equivalent to this test method.
temperature. The system does not attain thermal equilibrium
1.4 This international standard was developed in accor-
during the transient.
dance with internationally recognized principles on standard-
3.2.2 thermal conductivity, n—the time rate of steady heat
ization established in the Decision on Principles for the
flow/unit area through unit thickness of a homogeneous mate-
Development of International Standards, Guides and Recom-
rialinadirectionperpendiculartothesurfaceinducedbyaunit
mendations issued by the World Trade Organization Technical
temperature difference.
Barriers to Trade (TBT) Committee.
3.2.2.1 Discussion—Where other modes of heat transfer are
present in addition to conduction, such as convection and
2. Referenced Documents
radiation, this property often is referred to as the apparent
2
2.1 ASTM Standards:
thermal conductivity, λ .
app
C177 Test Method for Steady-State Heat Flux Measure-
3.2.2.2 Discussion—Thermal conductivity must be associ-
ments and Thermal Transmission Properties by Means of
ated with the conditions under which it is measured, such as
the Guarded-Hot-Plate Apparatus
temperature and pressure, as well as the compositional varia-
C518 Test Method for Steady-State Thermal Transmission
tion of the material. It is possible that thermal conductivity will
Properties by Means of the Heat Flow Meter Apparatus
vary with direction and orientation of the specimen since some
C1113 Test Method for Thermal Conductivity of Refracto-
materialsarenotisotropicwithrespecttothermalconductivity.
ries by Hot Wire (Platinum Resistance Thermometer
In the case of thermoset polymers, it is possible that thermal
Technique)
conductivity will vary with the extent of cure.
D618 Practice for Conditioning Plastics for Testing
3.2.3 thermal diffusivity—a heat-transport property given by
the thermal conductivity divided by the thermal mass, which is
1
a product of the density and the heat capacity.
This test method is under the jurisdiction ofASTM Committee D20 on Plastics
and is the direct responsibility of Subcommittee D20.30 on Thermal Properties.
3.3 Symbols:
Current edition approved Aug. 1, 2017. Published August 2017. Originally
approved in 1997. Last previous edition approved in 2016 as D5930 - 16. DOI: 3.3.1 C—Probe constant.
10.1520/D5930-17.
3.3.2 λ—Thermal conductivity, W/m.K.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.3.3 Q—Heat output per unit length, W/m.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 3.3.4 T —The temperature (K) recorded at time t .
2 2
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5930 − 17
3.3.5 T —The temperature
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D5930 − 16 D5930 − 17
Standard Test Method for
Thermal Conductivity of Plastics by Means of a Transient
1
Line-Source Technique
This standard is issued under the fixed designation D5930; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the determination of the thermal conductivity of plastics over a temperature range from –40 to
400°C. It is possible to measure the thermal conductivity of materials filled and unfilled thermoplastics, thermosets, and rubbers
in the range from 0.08 to 2.0 W/m.K covering thermoplastics, thermosets, and rubbers, filled and reinforced.W/m.K.
1.2 The values stated in SI units shall be regarded as standard.
1.3 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the
user of this standard to establish proper safety and health practices and determine the applicability of regulatory limitations prior
to use.
NOTE 1—There is no known ISO equivalent to this test method.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the
Guarded-Hot-Plate Apparatus
C518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
C1113 Test Method for Thermal Conductivity of Refractories by Hot Wire (Platinum Resistance Thermometer Technique)
D618 Practice for Conditioning Plastics for Testing
D883 Terminology Relating to Plastics
D2717 Test Method for Thermal Conductivity of Liquids
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E1225 Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique
3. Terminology
3.1 Definitions—Terminology used in this standard is in accordance with Terminology D883.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 temperature transient, n—the temperature rise associated with the perturbation of a system, initially at a uniform
temperature. The system does not attain thermal equilibrium during the transient.
3.2.2 thermal conductivity, n—the time rate of steady heat flow/unit area through unit thickness of a homogeneous material in
a direction perpendicular to the surface induced by a unit temperature difference.
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.30 on Thermal Properties.
Current edition approved Sept. 1, 2016Aug. 1, 2017. Published September 2016August 2017. Originally approved in 1997. Last previous edition approved in 20092016
as D5930 - 09.D5930 - 16. DOI: 10.1520/D5930-16.10.1520/D5930-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3.2.2.1 Discussion—
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5930 − 17
Where other modes of heat transfer are present in addition to conduction, such as convection and radiation, this property often is
referred to as the apparent thermal conductivity, λ .
app
3.2.2.2 Discussion—
Thermal conductivity must be associated with the conditions under which it is measured, such as temperature and pressure, as well
as the compositional variation of the material. It is possible that thermal conductivity will vary with direction and orientation of
the specimen since some materials are not isotropic with respect to thermal conductivity. In the case of thermoset polymers, it is
possible that thermal conductivity will vary with the extent of cure.
3.2.3 thermal diffusivity—a heat-transport property given by the thermal co
...
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