ASTM WK41552

    New Test Method for Kinetic Parameters by Factor Jump/Modulated Thermogravimetry

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    Developed by Subcommittee: E37.01 | Committee E37 | Contact Staff Manager



    WK41552

    1. Scope

    1.1 This test method describes the model-free determination of Arrhenius activation energy by thermogravimetry using the factor jump (1)2 or modulated thermogravimetry (2) techniques. With the assumption of a first-order kinetic model, the pre-exponential factor is additionally determined. 1.2 This test method is generally applicable to materials with well-defined decomposition profiles, namely, a smooth, continuous mass change. 1.3 This test method is generally applicable to decomposition occurring in the range from 400 to 1200K (nominally 100 to 900C). The temperature range may be extended depending on the instrumentation and material used. 1.4 SI units are the standard. 1.5 There is no ISO standard similar to this test method. 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.

    Requested by materials suppliers to assist in accelerated lifetime testing.


    Keywords

    activation energy; decomposition; kinetics; pre-exponential factor; thermogravimetric analysis; thermogravimetry

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:
    03-30-2013

    Technical Contact:
    Roger Blaine

    Item:
    001

    Ballot:
    E37 (13-06)

    Status:
    Ballot Item Approved as E2958-2014 and Pending Publication