【国外标准】 Standard Test Methods for Glass-Bonded Mica Used as Electrical Insulation

6.1 This characteristic is useful for specification purposes and has utility as a quality control parameter.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 MethodArc Resistance 57 – 59 D495Compressive Strength 33 – 35 D695Conditioning 5 D618Dielectric Strength 48 – 51 D149Dissipation Factor 43 – 47 D150 and D2149Heat Distortion Temperature 24 – 29 D648Impact Resistance 36 – 39 D256Modulus of Rupture 30 – 32 D790 and C674Permittivity 43 – 47 D150 and D2149Porosity 13 – 16 D116Resistivity, Volume and Surface 52 – 56 D257Rockwell Hardness 10 – 12 D785Specific Gravity  6 – 9 D792Specimens 4  Tensile Strength 40 – 42 D638 and D651Terminology 3 D1711Thermal Conductivity 17 – 19 C177 and E1225Thermal Expansion 20 – 23 E228 and E289Thickness 49 and 54 D3741.4 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.