ASTM-E1641 › Historical Revision Information
Standard Test Method for Decomposition Kinetics by Thermogravimetry
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Scope
1.1 This test method describes the determination of the kinetic parameters, Arrhenius activation energy, and preexponential factor by thermogravimetry, based on the assumption that the decomposition obeys first-order kinetics.
1.2 This test method is generally applicable to materials with well-defined decomposition profiles, namely, a smooth, continuous mass change with a single maximum rate.
1.3 This test method is normally applicable to decomposition occurring in the range from 400 to 1300K (100 to 1000 °C). The temperature range may be extended depending on the instrumentation used.
1.4 Computer or electronic-based instruments, techniques, or data treatment equivalent to this test method may also be used.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 This method is similar to ISO 11358-2 but differs in its mathematical treatment.
1.7 This standard does not purport to address all of the safety concerns, 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.
Significance and Use
5.1 Thermogravimetry provides a rapid method for determining the temperature-decomposition profile of a material.
5.2 This test method can be used for estimating lifetimes of materials, using Test Method E1877 provided that a relationship has been established between the thermal endurance test results and actual lifetime tests.
Keywords
Arrhenius activation energy; Arrhenius pre-exponential factor; kinetic parameters; thermal decomposition; thermogravimetric analysis; ICS Number Code 71.040.40 (Chemical analysis)
To find similar documents by ASTM Volume:
14.01 (Healthcare Informatics)
To find similar documents by classification:
71.040.40 (Chemical analysis Including analysis of gases and surface chemical analysis)
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Document Number
ASTM-E1641-07(2012)
Revision Level
2007 R12 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
Nov. 15, 2012
Document Type
Test Method
Page Count
6 pages
Committee Number
E37.01