1.1 本试验方法描述了通过差示扫描量热法（DSC）测定熔融和结晶的焓（热）。 1.2 本试验方法适用于颗粒状或任何可切割出适当试样的预制形状的固体样品，或在仪器范围内结晶的液体样品。但是，请注意，结果可能会受到试样形状和质量以及其他实验条件的影响。 1.3 正常工作温度范围为-120°C至600°C。温度范围可以根据所使用的仪器进行扩展。 1.4 本试验方法适用于具有良好热稳定性的材料- 定义吸热或放热行为。 1.5 以国际单位制表示的值应被视为标准值。本标准不包括其他计量单位。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 5.1 差示扫描量热法提供了一种快速测定材料一级转变过程中焓变化的方法。 5.2 该测试方法可用于质量控制、规范验收和研究。

1.1 This test method describes the determination of the enthalpy (heat) of fusion (melting) and crystallization by differential scanning calorimetry (DSC). 1.2 This test method is applicable to solid samples in granular form or in any fabricated shape from which an appropriate specimen can be cut, or to liquid samples that crystallize within the range of the instrument. Note, however, that the results may be affected by the form and mass of the specimen, as well as by other experimental conditions. 1.3 The normal operating temperature range is from −120 °C to 600 °C. The temperature range can be extended depending upon the instrumentation used. 1.4 This test method is applicable to thermally stable materials with well-defined endothermic or exothermic behavior. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Differential scanning calorimetry provides a rapid method for the determination of enthalpic changes accompanying first-order transitions of materials. 5.2 This test method is useful for quality control, specification acceptance, and research.