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Description of ASTM-E1640 1999ASTM E1640-99Historical Standard: Standard Test Method for Assignment of the Glass Transition Temperature By Dynamic Mechanical AnalysisASTM E1640Scope 1.1 This test method covers the assignment of a glass transition temperature (Tg) of materials using dynamic mechanical analyzers. 1.2 This test method is applicable to thermoplastic polymers, thermoset polymers, and partially crystalline materials which are thermally stable in the glass transition region. 1.3 The applicable range of temperatures for this test method is dependent upon the instrumentation used, but, in order to encompass all materials, the minimum temperature should be about -150°C. 1.4 This test method is intended for materials having an elastic modulus in the range of 0.5 MPa to 100 GPa. 1.5 Electronic instrumentation or automated data analysis and data reduction systems or treatments equivalent to this test method may also be used. Note 1-The user bears the responsibility for determining the precision, accuracy, and validity of the techniques and measurements made using dynamic mechanical analyzers in accordance with this standard. If disputes arise, only the manual procedures described in this standard are to be considered valid.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. Keywords Amorphous materials; Dynamic mechanical analysis; Elastic modulus; Glass transition temperature (Tg); Partially crystalline materials; Polymers; Storage modulus; Temperature; Thermal analysis; Thermoplastic/thermoset polymers; glass transition temperature-assignment, by dynamic mechanical analysis,; test,; Modulus; glass transition temperature-assignment, by dynamic mechanicalanalysis,; test,; Semi-crystalline materials; glass transition temperature-assignment, bydynamic mechanical analysis,; test ICS Code ICS Number Code 81.040.10 (Raw materials and raw glass) DOI: 10.1520/E1640-99 The following editions for this book are also available...
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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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