1.1 本试验方法描述了通过使用热重分析法测定材料开始分解或反应的温度和质量变化程度来评估材料热稳定性。该试验方法使用最少数量的材料，适用于环境温度至800°C的温度范围。 1.2 在本试验方法中，在所用的实验条件下，没有反应或分解被用作热稳定性的指标。 1.3 本试验方法可在相关温度范围内不升华或蒸发的固体或液体上进行。 1.4 本试验方法本身不得用于确定安全操作或储存温度。它可以与其他测试方法（例如，测试方法）结合使用 E487 和 E537 ，和指南 E1981 )作为材料危险性分析的一部分。 1.5 本试验方法通常适用于室温至800°C范围内发生的反应或分解。 根据使用的仪器，温度范围可能会扩大。 1.6 本试验方法可在惰性、反应性或自生气氛中进行。 1.7 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。 1.8 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。 1.9 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 热重分析法提供了一种快速测定材料热分解和反应质量变化的方法。 5.2 该试验方法有助于检测潜在的危险反应，并估计这些反应发生的温度。建议将本试验方法作为检测未鉴定材料或混合物热危害的筛选试验（见第节） 8. ). 5.3 高能材料、药物和聚合物是本试验可能有用的材料示例。该试验对于熔点与反应或分解开始重叠的材料特别有用。 注1: 在差示扫描量热法（DSC）中，熔融吸热可能会干扰反应或分解起始温度的测定。 5.4 本试验不适用于在相关温度范围内升华或蒸发的材料。 在通过热重分析进行测试之前，需要净化含有挥发性杂质的样品。或者，可以按原样测试样品，但在数据分析过程中需要特别小心。杂质损失引起的质量损失不应干扰反应或分解温度的测定。 5.5 该测试方法的四个重要标准是:检测样品质量变化；质量变化的程度；事件发生时的近似温度；对大气影响的观察。

1.1 This test method describes the assessment of material thermal stability through the determination of the temperature at which the materials start to decompose or react and the extent of the mass change using thermogravimetry. The test method uses minimum quantities of material and is applicable over the temperature range from ambient to 800 °C. 1.2 The absence of reaction or decomposition is used as an indication of thermal stability in this test method under the experimental conditions used. 1.3 This test method may be performed on solids or liquids, which do not sublime or vaporize in the temperature range of interest. 1.4 This test method shall not be used by itself to establish a safe operating or storage temperature. It may be used in conjunction with other test methods (for example, Test Methods E487 and E537 , and Guide E1981 ) as part of a hazard analysis of a material. 1.5 This test method is normally applicable to reaction or decomposition occurring in the range from room temperature to 800 °C. The temperature range may be extended depending on the instrumentation used. 1.6 This test method may be performed in an inert, a reactive or self-generated atmosphere. 1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.8 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. 1.9 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 Thermogravimetry provides a rapid method for determining the thermal decomposition and reaction mass change of a material. 5.2 This test method is useful in detecting potentially hazardous reactions and in estimating the temperatures at which these reactions occur. This test method is recommended as a screening test for detecting the thermal hazards of an uncharacterized material or mixture (see Section 8 ). 5.3 Energetic materials, pharmaceuticals and polymers are examples of materials for which this test might be useful. This test is especially useful for materials having melting points that overlap with the onset of reaction or decomposition. Note 1: In differential scanning calorimetry (DSC), the melting endotherm may interfere with the determination of the onset temperature for reaction or decomposition. 5.4 This test is not suitable for materials that sublime or vaporize in the temperature range of interest. A sample with volatile impurities needs to be purified prior to testing by thermogravimetric analysis. Alternatively, the sample can be tested as is, however, special caution is required during the data analysis. The mass loss due to the loss of impurity should not interfere with the determination of reaction or decomposition temperature. 5.5 The four significant criteria of this test method are: the detection of a sample mass change; the extent of the mass change; the approximate temperature at which the event occurs; the observance of effects due to the atmosphere.