ASTM E1641-16
Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method

Standard No.

ASTM E1641-16

Release Date

2016

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E1641-18

Latest

ASTM E1641-23

Scope

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.

1.1 This test method describes the determination of the kinetic parameters, Arrhenius activation energy, and pre-exponential factor by thermogravimetry, based on the assumption that the decomposition obeys first-order kinetics using the Ozawa/Flynn/Wall isoconversional method (1, 2).2

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 1300 K (nominally 100 to 1000°C). The temperature range may be extended depending on the instrumentation used.

1.4 This test method is similar to ISO8201;11358-2 but differs in its mathematical treatment.

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 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.

ASTM E1641-16 Referenced Document

• ASTM E1142 Standard Terminology Relating to Thermophysical Properties
• ASTM E1582 Standard Practice for Calibration of Temperature Scale for Thermogravimetry
• ASTM E1877 Standard Practice for Calculating Thermal Endurance of Materials from Thermogravimetric Decomposition Data
• ASTM E1970 Standard Practice for Statistical Treatment of Thermoanalytical Data
• ASTM E2040 Standard Test Method for Mass Scale Calibration of Thermogravimetric Analyzers
• ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• ASTM E473 Standard Terminology Relating to Thermal Analysis
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• ISO 11358-2 Plastics - Thermogravimetry (TG) of polymers - Part 2: Determination of activation energy

ASTM E1641-16 history

• 2023 ASTM E1641-23 Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method
• 2018 ASTM E1641-18 Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method
• 2016 ASTM E1641-16 Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method
• 2015 ASTM E1641-15 Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method
• 2013 ASTM E1641-13 Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method
• 2007 ASTM E1641-07(2012) Standard Test Method for Decomposition Kinetics by Thermogravimetry
• 2007 ASTM E1641-07 Standard Test Method for Decomposition Kinetics by Thermogravimetry
• 2004 ASTM E1641-04 Standard Test Method for Decomposition Kinetics by Thermogravimetry
• 1999 ASTM E1641-99 Standard Test Method for Decomposition Kinetics by Thermogravimetry