1.1 本试验方法描述了通过差示扫描量热法（DSC）和差示热分析（DTA）测定纯材料的熔融（和结晶）温度。 1.2 该测试方法通常适用于具有明确熔化温度的热稳定材料。 1.3 DSC的正常工作范围为−120°C至600°C，DTA的正常工作范围为25°C至1500°C。根据所使用的仪器，温度范围可以扩展。 1.4 以SI单位表示的值是标准值。本标准不包括其他计量单位。 1.5 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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 差示扫描量热法和差示热分析为测定结晶材料的熔融和结晶温度提供了一种快速方法。 5.2 该测试可用于质量控制、质量标准验收和研究。

1.1 This test method describes the determination of melting (and crystallization) temperatures of pure materials by differential scanning calorimetry (DSC) and differential thermal analysis (DTA). 1.2 This test method is generally applicable to thermally stable materials with well-defined melting temperatures. 1.3 The normal operating range is from −120 °C to 600 °C for DSC and 25 °C to 1500 °C for DTA. The temperature range can be extended depending upon the instrumentation used. 1.4 The values stated in SI units are the standard. No other units of measurement are included in this standard. 1.5 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. 1.6 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 and differential thermal analysis provide a rapid method for determining the fusion and crystallization temperatures of crystalline materials. 5.2 This test is useful for quality control, specification acceptance, and research.