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About This Item

 

Full Description

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

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 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.

 

Document History

  1. ASTM E1641-18

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    Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method

    • Most Recent
  2. ASTM E1641-16


    Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method

    • Historical Version
  3. ASTM E1641-15


    Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method

    • Historical Version
  4. ASTM E1641-13


    Standard Test Method for Decomposition Kinetics by Thermogravimetry Using the Ozawa/Flynn/Wall Method

    • Historical Version
  5. ASTM E1641-07(2012)


    Standard Test Method for Decomposition Kinetics by Thermogravimetry

    • Historical Version
  6. ASTM E1641-07


    Standard Test Method for Decomposition Kinetics by Thermogravimetry

    • Historical Version
  7. ASTM E1641-04


    Standard Test Method for Decomposition Kinetics by Thermogravimetry

    • Historical Version
  8. ASTM E1641-99


    Standard Test Method for Decomposition Kinetics by Thermogravimetry

    • Historical Version