ASTM E1953-98

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Designation:E1953–98
Standard Practice for
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Description of Thermal Analysis Apparatus
This standard is issued under the fixed designation E 1953; 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 (ε) indicates an editorial change since the last revision or reapproval.
1. Scope specific test method. Items underlined constitute required
inputs specifically established for each test method (for ex-
1.1 This practice covers generic descriptions of apparatus
ample, sensitivity of temperature sensor).
used for thermal analysis measurements and its purpose is to
4.3 Additionalcomponentsandaccessoriesmaybeaddedas
achieve uniformity in description of thermal analysis instru-
needed, with the appropriate performance requirements speci-
mentation throughout standard test methods. These descrip-
fied. Items listed in these descriptions but not used in a test
tions should be incorporated into any test method where the
method (for example, vacuum system) may be deleted.
thermal analysis instrumentation described herein is cited.
1.2 Each description contains quantifiable instrument per-
5. Apparatus
formance requirements to be specified for each test method.
5.1 Differential Scanning Calorimeter (DSC)—The essen-
1.3 This standard does not purport to address all of the
tial instrumentation required to provide the minimum differen-
safety concerns, if any, associated with its use. It is the
tial scanning calorimetric capability for this method includes:
responsibility of the user of this standard to establish appro-
5.1.1 DSC Test Chamber composed of:
priate safety and health practices and determine the applica-
5.1.1.1 A furnace/s to provide uniform controlled heating
bility of regulatory limitations prior to use.
(cooling)ofaspecimenandreferencetoaconstanttemperature
2. Referenced Documents or at a constant rate within the applicable temperature range of
this method.
2.1 ASTM Standards:
5.1.1.2 Atemperature sensor to provide an indication of the
E 380 Practice for Use of the International System of Units
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specimen/furnace temperature to6 ______ K.
(SI) The Modernized Metric System
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5.1.1.3 Differential sensors to detect a heat flow (power)
E 473 Terminology Relating to Thermal Analysis
difference between the specimen and reference with a range of
E 1142 Terminology Relating to Thermophysical Proper-
3 ______ mW and a sensitivity of6 _______ µW.
ties
5.1.1.4 Ameansofsustainingatestchamberenvironmentof
3. Terminology
at a purge rate of mL/min6 ______ mL/min.
3.1 Technical terms used in this document are found in
NOTE 1—Typically, ______ % pure nitrogen, argon, or helium is
Terminologies E 473 and E 1142 and Practice E 380.
employed when oxidation in air is a concern. Unless effects of moisture
are to be studied, use of dry purge gas is recommended and is essential for
4. Significance and Use
operation at subambient temperatures.
4.1 Section 5 identifies essential instrumentation and acces-
5.1.2 Temperature Controller , capable of executing a spe-
sories required to perform thermal analysis for a variety of
cific temperature program by operating the furnace(s) between
different instruments. The appropriate generic instrument de-
selected temperature limits at a rate of temperature change of
scription should be included in any test method describing use
______ K/min constant to 6 ______ K/min (list cooling
or application of the thermal analysis instrumentation de-
requirements separately if different) or at an isothermal tem-
scribed herein.
perature constant to6 ______ K.
4.2 Units included in these descriptions are used to identify
5.1.3 A Recording Device, either digital or analog, capable
needed performance criteria and are considered typical. Other
of recording and displaying any fraction of the heat flow signal
units may be used when including these descriptions in a
(DSC curve) including the signal noise.
5.1.4 Containers(pans,crucibles,vials,etc.)thatareinertto
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This practice is under the jurisdiction of Committee E-37 on Thermal the specimen and reference materials and that are of suitable
Measurements and is the direct responsibility of Subcommittee E37.01 on Test
structural shape and integrity to contain the specimen and
Methods and Recommended Practices.
reference in accordance with the specific requirements of this
Current edition approved April 10, 1998. Published February 1999.
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practice including:
Discontinued, see 1997 Annual Book of ASTM Standards, Vol 14.02.
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Annual Book of ASTM Standards, Vol 14.02.
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