ASTM E1952-98

Standard Test Method for Thermal Conductivity and Thermal Diffusivity by Modulated Temperature Differential Scanning Calorimetry

SCOPE
1.1 This test method covers the determination of thermal conductivity of homogeneous, non-porous solid materials in the range of 0.10 to 1.0 W/(K*m) by modulated temperature differential scanning calorimeter. This range includes many polymeric, glass, and ceramic materials. Thermal diffusivity, which is elated to thermal conductivity through specific heat capacity and density, may also be derived. Thermal conductivity and diffusivity can be determined at one or more temperatures over the range of 0 to 90°C.  
1.2 Electronic instrumentation or automated data analysis and reduction systems or treatments equivalent to this test method may be used.  
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.  
1.4  This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Aug-2001
• ICS: 17.200.10 - Heat. Calorimetry
• Technical Committee: E37 - Thermal Measurements
• Drafting Committee: E37.10 - Fundamental, Statistical and Mechanical Properties

Relations

• Replaced By: ASTM E1952-01 - Standard Test Method for Thermal Conductivity and Thermal Diffusivity by Modulated Temperature Differential Scanning Calorimetry
• Effective Date: 10-Aug-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: E 1952 – 98
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Thermal Conductivity and Thermal Diffusivity by Modulated
1
Temperature Differential Scanning Calorimetry
This standard is issued under the fixed designation E 1952; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 1142 Terminology Relating to Thermophysical Proper-
2
ties
1.1 This test method covers the determination of thermal
E 1231 Practice for Calculation of Hazard Potential
determination of thermal conductivity of homogeneous, non-
2
Figures-of-Merit for Thermally Unstable Materials
porous solid materials in the range of 0.10 to 1.0 W/(K • m) by
modulated temperature differential scanning calorimeter. This
3. Terminology
range includes many polymeric, glass, and ceramic materials.
3.1 Definitions:
Thermal diffusivity, which is related to thermal conductivity
3.1.1 Specific technical terms used in this document are
through specific heat capacity and density, may also be derived.
defined in Terminologies E 473 and E 1142.
Thermal conductivity and diffusivity can be determined at one
3.2 Definitions of Terms Specific to This Standard:
or more temperatures over the range of 0 to 90 °C.
3.2.1 modulated temperature differential scanning
1.2 Electronic instrumentation or automated data analysis
calorimeter—a version of differential scanning calorimetry
and reduction systems or treatments equivalent to this test
that provides a sinusoidally varying temperature program to the
method may be used.
test specimen in addition to the traditional isothermal or
1.3 The values stated in SI units are to be regarded as the
temperature ramp programs. Results from analysis shall in-
standard. The values given in parentheses are provided for
clude apparent and specific heat capacity.
information purposes only.
1.4 This standard does not purport to address all of the
4. Summary of Test Method
safety concerns, if any, associated with its use. It is the
4.1 The heat capacity of a test specimen may be determined
responsibility of the user of this standard to establish appro-
using the modulated temperature approach in which an oscil-
priate safety and health practices and determine the applica-
latory or periodically repeating temperature program (around
bility of regulatory limitations prior to use.
an average temperature) is imposed upon a test specimen
2. Referenced Documents producing an oscillatory (periodic) heat flow into or out of the
specimen. The heat capacity of the test specimen may be
2.1 ASTM Standards:
2
obtained from the amplitude of the resultant heat flow divided
E 473 Terminology Relating to Thermal Analysis
by the amplitude of the oscillatory (periodic) temperature that
E 967 Practice for Temperature Calibration of Differential
produces it. Specific heat capacity is obtained by normalizing
Scanning Calorimeters and Differential Thermal Analyz-
2 the heat capacity to specimen mass.
ers
4.1.1 The accuracy of the heat capacity thus obtained
E 968 Practice for Heat Flow Calibration of Differential
2 depends upon experimental conditions. When a thin test
Scanning Calorimeters
specimen encapsulated in a specimen pan of high thermal
conductivity is treated with temperature oscillations of long
1
period (low frequency), the test specimen is assumed to
This test method is under the jurisdiction of Committee E-37 on Thermal
Measurements and is the direct responsibility of Subcommittee E37.01 on Test
achieve a uniform temperature distribution and the resultant
Methods and Recommended Practices.
heat capacity information will be comparable with those of
Current edition approved May 10, 1998. Published December 1998.
other non-oscillatory test methods.
The process described in this test method is covered by a patent (Marcus, S. M.
4.1.2 When one end of a thick test specimen is exposed to
and Reading, M., U. S.Patent 5 335 993, 1994) held by TA Instruments, Inc., 109
Lukens Drive, New Castle DE 19720. Interested parties are invited to submit
the temperature oscillations of short period (high frequency),
information regarding the identification of acceptable alternatives to this patented
the test specimen will achieve a temperature distribution over
method to the Committee on Standards, ASTM Headquarters, 100 Barr Harbor
its length related to its thermal diffusivity.
Drive, West Conshohocken PA 19428-2959. Your comments will receive careful
considerations at a meeting of the responsible technical committee whi
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