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Description of ASTM-E2070 2003ASTM E2070-03Historical Standard: Standard Test Method for Kinetic Parameters by Differential Scanning Calorimetry Using Isothermal MethodsASTM E2070Scope 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 1Since 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 The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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