1.1 本试验方法包括通过差示扫描量热法测定聚合物的熔融和结晶转变温度和焓。 注1: 要结合结构研究来确定真正的熔合热，通常需要专门的结晶技术。 1.2 本试验方法适用于颗粒状聚合物或任何可切割适当试样的预制形状。 1.3 正常工作温度范围为从低温区到600°C。 某些设备允许扩展温度范围。 1.4 以国际单位制表示的数值是标准值。 注2: 本试验方法不适用于所述的所有类型的聚合物（参见 6.8 ). 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 注3: 本标准类似于但不等同于ISO 11357- 1, -2, -3. ISO程序提供了本试验方法未提供的其他信息。 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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 热分析提供了一种快速测量聚合物在特定温度范围内以受控速率加热/冷却时由于形态或化学变化而产生的转变的方法。 确定这些转变的比热容、热流和温度值的变化。差示扫描量热法用于帮助识别特定的聚合物、聚合物合金和某些聚合物添加剂，它们表现出热转变。借助该技术测量了引起或影响某些转变的化学反应；这些反应包括氧化、热固性树脂固化和热分解。 5.2 该测试方法有助于规范验收、过程控制和研究。

1.1 This test method covers determination of transition temperatures and enthalpies of fusion and crystallization of polymers by differential scanning calorimetry. Note 1: True heats of fusion are to be determined in conjunction with structure investigation, and frequently, specialized crystallization techniques are needed. 1.2 This test method is applicable to polymers in granular form or to any fabricated shape from which it is possible to cut appropriate specimens. 1.3 The normal operating temperature range is from the cryogenic region to 600°C. Certain equipment allows the temperature range to be extended. 1.4 The values stated in SI units are the standard. Note 2: This test method does not apply to all types of polymers as written (see 6.8 ). 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. Note 3: This standard is similar but not equivalent to ISO 11357-1, -2, -3. The ISO procedures provide additional information not supplied by this test method. 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 Thermal analysis provides a rapid method for measuring transitions due to morphological or chemical changes in a polymer as it is heated/cooled at a controlled rate 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.