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Standard Practice for Calculating Thermal Endurance of Materials from Thermogravimetric Decomposition Data
Automaticky preložený názov:
Štandardná prax pre výpočet tepelnú odolnosť materiálov z termogravimetrického rozkladu dát
NORMA vydaná dňa 1.3.2005
Označenie normy: ASTM E1877-00(2005)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.3.2005
Kód tovaru: NS-43415
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
Arrhenius activation energy, Arrhenius pre-exponential factor, kinetic parameters, relative thermal index, thermal decomposition, thermal endurance, thermal life, thermofravimetric analysis, ICS Number Code 71.040.40 (Chemical analysis)
Significance and Use | ||||||
Thermogravimetry provides a rapid method for the determination of the temperature-decomposition profile of a material. This practice is useful for quality control, specification acceptance and research. This practice shall not be used for product lifetime predications unless a correlation between test results and actual lifetime has been demonstrated. In many cases, multiple mechanisms occur during the decomposition of a material, with one mechanism dominating over one temperature range, and a different mechanism dominating in a different temperature range. Users of this practice are cautioned to demonstrate for their system that any temperature extrapolations are technically sound. |
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1. Scope | ||||||
1.1 This practice covers additional treatment of the Arrhenius activation energy data determined by Test Method E 1641 to develop a thermal endurance curve and derive a relative thermal index for materials. 1.2 This practice is generally applicable to materials with a well-defined decomposition profile, namely a smooth, continuous mass change with a single maximum rate. 1.3 There is no ISO standard equivalent to this practice. 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. |
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2. Referenced Documents | ||||||
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