1.1 本试验方法概述了获取拟用作电绝缘材料的固体聚合物材料的热重分析（TGA）数据的程序。 1.2 不要使用本标准对任何电绝缘材料的长期热性能进行量化估计。如果热重分析和材料的长期热性能之间存在关系，则必须确定并公布这一事实，最好是通过比较候选材料和已知显示类似失效模式的另一种材料之间的数据。 1.3 以国际单位制表示的数值是标准值。 1.4 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。 1.5 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 当样品逐渐加热到更高温度时，热重分析有助于确定温度对离开样品的挥发性物质数量的动态功能影响。TGA可用于过程控制、过程开发、材料评估以及规范中的识别和质量控制。 5.2 材料的热稳定性可以与质量损失的程度和时间速率作为温度的函数相关联。因此，TGA曲线可作为评估同一通用族绝缘材料相对性能的初步筛选方法。 5.3 在任何给定应用中，绝缘材料的功能温度-寿命关系取决于许多服务和环境因素。因此，从热重分析曲线获得的信息本身不足以描述绝缘材料的热性能。 5.4 有关TGA数据解释的进一步讨论，请参阅附录。

1.1 This test method outlines a procedure for obtaining thermogravimetric (TGA) data on solid polymeric materials intended for use as electrical insulating materials. 1.2 Do not use this standard to quantify an estimate of the long-term thermal capability for any electrical insulating material. If a relationship exists between TGA and the long-term thermal capabilities of a material, then that fact must be established and made public, preferably by comparing data between a candidate and another material known to display similar failure modes. 1.3 The values stated in SI units are the standard. 1.4 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. 1.5 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 is useful in determining the dynamic functional effect of temperature on the amount of volatile materials leaving a specimen as the latter is heated progressively to higher temperatures. TGA can be useful for process control, process development, material evaluation, and for identification and quality control in specifications. 5.2 The thermal stability of a material can be associated with the degree and time rate of mass loss as a function of temperature. TGA curves can, therefore, be used as a preliminary screen method in the evaluation of relative behavior of insulating materials of the same generic family. 5.3 The functional temperature-life relationship of an insulating material in any given application depends on a number of service and environmental factors. Therefore, the information obtained from TGA curves is not adequate by itself to describe the thermal capability of an insulating material. 5.4 Refer to the Appendix for further discussion of the interpretation of TGA data.