1.1 本试验方法描述了通过调制温度差示扫描量热法测定比热容。对于通过步进等温或多步等温程序测定比热容，读者可参考试验方法 第269页 . 1.2 该测试方法通常适用于热稳定固体和液体。 1.3 测试的正常工作范围为（-100至600） °C。温度范围可根据使用的仪器和试样架而延长。 1.4 单位- 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全和健康实践，并确定监管限制的适用性。 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 调制温度差扫描量热测量提供了一种快速、简单的方法来确定材料的比热容，即使在准等温条件下也是如此。 5.2 比热容对于设计目的、质量控制和研发都很重要。 5.3 使用阶梯准等温程序可以跟踪材料的结构变化。

1.1 This test method describes the determination of specific heat capacity by modulated temperature differential scanning calorimetry. For the determination of specific heat capacity by a step-isothermal or multiple step-isothermal temperature program, the reader is referred to Test Method E1269 . 1.2 This test method is generally applicable to thermally stable solids and liquids. 1.3 The normal operating range of the test is from (–100 to 600) °C. The temperature range may be extended depending upon the instrumentation and specimen holders used. 1.4 Units— The values stated in SI units are to be regarded as 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 and health 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 Modulated temperature differential scanning calorimetric measurements provide a rapid, simple method for determining specific heat capacities of materials, even under quasi-isothermal conditions. 5.2 Specific heat capacities are important for design purposes, quality control, and research and development. 5.3 The use of a stepped quasi-isothermal program may be used to follow structure changes in materials.