1.1 本试验方法描述了在压缩实验条件下使用热机械测量来分配材料加热时的玻璃化转变温度的程序。 1.2 本试验方法适用于非晶态或部分晶态材料，其在玻璃化转变以下具有足够的刚性，以抑制传感探头的压痕。 1.3 正常工作温度范围为 −100 °C至600 °C。该温度范围可根据所使用的仪器进行扩展。 1.4 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 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。 第节给出了具体的预防说明 7. . 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 玻璃化转变取决于待测试材料的热历史。对于非晶态和半晶态材料，玻璃化转变温度的指定可能会产生有关热历史、加工条件、稳定性、化学反应进度以及机械和电气行为的重要信息。 5.2 热机械分析提供了一种快速检测与玻璃化转变相关的硬度或线性膨胀变化的方法。 5.3 该测试方法有助于研发、质量控制和规范验收。

1.1 This test method describes procedures for the assignment of the glass transition temperature of materials on heating using thermomechanical measurements under compression experimental conditions. 1.2 This test method is applicable to amorphous or to partially crystalline materials that are sufficiently rigid below the glass transition to inhibit indentation by the sensing probe. 1.3 The normal operating temperature range is from −100 °C to 600 °C. This temperature range may be extended depending upon the instrumentation used. 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 7 . 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 The glass transition is dependent on the thermal history of the material to be tested. For amorphous and semicrystalline materials the assignment of the glass transition temperature may lead to important information about thermal history, processing conditions, stability, progress of chemical reactions, and mechanical and electrical behavior. 5.2 Thermomechanical analysis provides a rapid means of detecting changes in hardness or linear expansion associated with the glass transition. 5.3 This test method is useful for research and development, quality control, and specification acceptance.