标准摘要
[中文适用范围]： 本部分IEC 61189定义了使用热机械分析仪（TMA）测定电气绝缘材料X/Y热膨胀系数的方法。该方法适用于在整个使用温度范围内保持固态，并在温度范围内保持足够硬度和刚度的材料，以避免感应探针对试样造成不可逆压痕。 [外文原描述]： IEC 61189-2-809:2024 defines the method to be followed for the determination of the X/Y coefficient of thermal expansion of electrical insulating materials by the use of a thermomechanical analyser (TMA). This method is applicable to materials that are solid of the entire range of temperature used and retain sufficient hardness and rigidity over the temperature range so that irreversible indentation of the specimen by the sensing probe does not occur.
英文名称Test methods for electrical materials, circuit boards and other interconnection structures and assemblies – Part 2-809: X/Y coefficient of thermal expansion (CTE) test for thick base materials by TMA