ASTM D3418 - 15

    Стандартный метод испытания по определению температур перехода и энтальпии плавления и кристаллизации полимеров посредством дифференциальной сканирующей калориметрии

    Active Standard ASTM D3418 Developed by Subcommittee: D20.30

    Book of Standards Volume: 08.02


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    Significance and Use

    5.1 Thermal analysis provides a rapid method for measuring transitions due to morphological or chemical changes, in a polymer as it is heated/cooled through a specified temperature range. Change in specific heat capacity, heat flow and temperature values are determined for these transitions. Differential scanning calorimetry is used to assist in identifying specific polymers, polymer alloys, and certain polymer additives, which exhibit thermal transitions. Chemical reactions that cause or affect certain transitions have been measured with the aid of this technique; such reactions include oxidation, curing of thermosetting resins, and thermal decomposition.

    5.2 This test method is useful for specification acceptance, process control, and research.