1.1 这些试验方法包括评估用作电绝缘的玻璃粘结、天然或合成云母材料的特性。 1.2 玻璃粘结云母材料在市场上有注塑和压模两种类型。除抗拉强度法外，这些试验方法适用于这两种类型。（参见第节 41 .) 1.3 试验方法见以下章节: 试验方法 部分 ASTM试验方法 电弧电阻 57 – 59 D495 抗压强度 33 – 35 D695 条件作用 5. D618页 介电强度 48 – 51 D149 耗散因子 43 – 47 D150型 和 D2149 热变形温度 24 – 29 D648 抗冲击性 36 – 39 D256 断裂模量 30 – 32 D790 和 C674 介电常数 43 – 47 D150型 和 D2149 多孔性 13 – 16 D116 电阻率、体积和表面 52 – 56 D257 洛氏硬度 10 – 12 D785 比重 6 – 9 D792 样本 4. 抗拉强度 40 – 42 D638 和 D651 术语 3. D1711 导热系数 17 – 19 C177 和 E1225 热膨胀 20 – 23 E228年 和 E289年 厚 49 和 54 D374页 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。 另请参见章节 45 , 49 , 54 和 58 . 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====== 6.1 该特性对于规范目的有用，并可作为质量控制参数。

1.1 These test methods cover the evaluation of the characteristics of glass-bonded, natural, or synthetic mica materials intended for use as electrical insulation. 1.2 Glass bonded mica materials are commercially available in both injection molded and compression molded types. These test methods are applicable to both types except for tensile strength methods. (See Section 41 .) 1.3 The test methods appear in the following sections: Test Method Section ASTM Test Method Arc Resistance 57 – 59 D495 Compressive Strength 33 – 35 D695 Conditioning 5 D618 Dielectric Strength 48 – 51 D149 Dissipation Factor 43 – 47 D150 and D2149 Heat Distortion Temperature 24 – 29 D648 Impact Resistance 36 – 39 D256 Modulus of Rupture 30 – 32 D790 and C674 Permittivity 43 – 47 D150 and D2149 Porosity 13 – 16 D116 Resistivity, Volume and Surface 52 – 56 D257 Rockwell Hardness 10 – 12 D785 Specific Gravity 6 – 9 D792 Specimens 4 Tensile Strength 40 – 42 D638 and D651 Terminology 3 D1711 Thermal Conductivity 17 – 19 C177 and E1225 Thermal Expansion 20 – 23 E228 and E289 Thickness 49 and 54 D374 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. See also Sections 45 , 49 , 54 , and 58 . 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 ====== 6.1 This characteristic is useful for specification purposes and has utility as a quality control parameter.