ASTM-E2070 2003

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E2070-03 Standard Test Method for Kinetic Parameters by Differential Scanning Calorimetry Using Isothermal Methods

Published By	Publication Date	Number of Pages
ASTM	2003	9

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Categories: 17.200.10 - Heat. Calorimetry, ASTM

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Description

ASTM E2070-03

Historical Standard: Standard Test Method for Kinetic Parameters by Differential Scanning Calorimetry Using Isothermal Methods

ASTM E2070

Scope

1.1 Test Method A determines kinetic parameters for activation energy, pre-exponential factor and reaction order using differential scanning calorimetry from a series of isothermal experiments over a small (~ 10 K) temperature range. This treatment is applicable to low nth order reactions and to autocatalyzed reactions such as thermoset curing or pyrotechnic reactions and crystallization transformations in the temperature range from 300 to 900 K (30 to 630 °C). This test method is applicable only to these types of exothermic reactions when the thermal curves do not exhibit shoulders, discontinuities or shifts in baseline.

1.2 Test Method B also determines the activation energy of a set of time-to-event and isothermal temperature data generated by this or other procedures.

1.3 Electronic instrumentation or automated data analysis systems or treatments equivalent to this test method may be used.

Note 1

Since all electronic data systems are not equivalent, the user must verify the applicability of the treatment to this method.

1.4 SI units are the standard.

1.5 This test method is similar but not equivalent to ISO 11357, Part 5, and provides more information than the ISO 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. Specific precautionary statements are given in Section 8.

Keywords

activation energy; autocatalytic reactions; crystallization reactions; differential scanning calorimetry (DSC); frequency factor; kinetics; nth order reactions; pre-exponential factor; reactions; thermal analysis; thermoset cure

ICS Code

ICS Number Code 17.200.10 (Heat. Calorimetry)

DOI: 10.1520/E2070-03

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology Summary of Test Method Basis of Methodology
3	Significance and Use Interferences FIG. 1
4	Hazards Apparatus Calibration FIG. 2
5	Procedure (Test Method A) Procedure (Test Method B) FIG. 3
6	Calculation (Test Method A) FIG. 4
7	Calculation (Test Method B) FIG. 5
8	Report Precision and Bias Keywords X1. TEST FOR nth ORDER OR AUTOCATALYTIC REACTIONS X1.1 X1.2 X1.3 X1.4 X1.5
9	X1.6 X2. TEST METHOD B—EXAMPLE CALCULATION X2.1 X2.2 X2.3 X2.4 X2.5 X2.6 X2.7 X2.8 TABLE X2.1 TABLE X2.2

Additional information

Standard Title	E2070-03 Standard Test Method for Kinetic Parameters by Differential Scanning Calorimetry Using Isothermal Methods
Published Code	ASTM
Publication Date	2003
Pages Count	9
ICS Codes	17.200.10 - Heat. Calorimetry