ASTM E2958-14
Standard Test Methods for Kinetic Parameters by Factor Jump/Modulated Thermogravimetry

Standard No.

ASTM E2958-14

Release Date

2014

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E2958-19

Latest

ASTM E2958-21

Scope

5.1 The activation energy may be used to calculate thermal endurance and an estimate of the lifetime of the material at specified temperatures using Test Method E1877.

5.2 The kinetic parameters determine by this test method may be used in quality assurance, research and development.

5.3 The kinetic parameters of activation energy and logarithm of the pre-exponential factor determined by this method have little intrinsic value in themselves. Most practical applications of this information, such as lifetime estimation (see Test Method E1877), also require an estimation of the precision of the respective values. Determination of that precision by replicated determination is a non-manditory part of this standard.

1.1 These test methods describe the model-free determination of Arrhenius activation energy by thermogravimetry using the factor jump (1)² (Method A) or modulated thermogravimetry (2) (Method B) techniques. With the assumption of a first-order kinetic model, the pre-exponential factor is additionally determined.

1.2 These test methods are applicable to materials with well-defined decomposition profiles, namely, a smooth, continuous mass change.

1.3 These test methods are applicable to decomposition occurring in the range from 400 K to 1200 K (nominally 100°C to 900°C). The temperature range may be extended depending on the instrumentation and material 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 There is no ISO standard similar to 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 E2958-14 Referenced Document

• ASTM E1142 Standard Terminology Relating to Thermophysical Properties
• ASTM E1582 Standard Practice for Calibration of Temperature Scale for Thermogravimetry
• ASTM E1641 Standard Test Method for Decomposition Kinetics by 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 E2550 Standard Test Method for Thermal Stability by Thermogravimetry
• ASTM E473 Standard Terminology Relating to Thermal Analysis

ASTM E2958-14 history

• 2021 ASTM E2958-21 Standard Test Methods for Kinetic Parameters by Factor Jump/Modulated Thermogravimetry
• 2019 ASTM E2958-19 Standard Test Methods for Kinetic Parameters by Factor Jump/Modulated Thermogravimetry
• 2014 ASTM E2958-14 Standard Test Methods for Kinetic Parameters by Factor Jump/Modulated Thermogravimetry