1. Scope

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:

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 and health practices and determine the applicability of regulatory limitations prior to use. See also Sections 45, 49, 54, and 58.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus

C674 Test Methods for Flexural Properties of Ceramic Whiteware Materials

D116 Test Methods for Vitrified Ceramic Materials for Electrical Applications

D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies

D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation

D256 Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics

D257 Test Methods for DC Resistance or Conductance of Insulating Materials

D374 Test Methods for Thickness of Solid Electrical Insulation

D495 Test Method for High-Voltage, Low-Current, Dry Arc Resistance of Solid Electrical Insulation

D618 Practice for Conditioning Plastics for Testing

D638 Test Method for Tensile Properties of Plastics

D648 Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position

D651 Test Method for Test for Tensile Strength of Molded Electrical Insulating Materials

D695 Test Method for Compressive Properties of Rigid Plastics

D785 Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials

D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement

D1711 Terminology Relating to Electrical Insulation

D2149 Test Method for Permittivity (Dielectric Constant) And Dissipation Factor Of Solid Dielectrics At Frequencies To 10 MHz And Temperatures To 500C

D6054 Practice for Conditioning Electrical Insulating Materials for Testing

E228 Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer

E289 Test Method for Linear Thermal Expansion of Rigid Solids with Interferometry

E1225 Test Method for Thermal Conductivity of Solids by Means of the Guarded-Comparative-Longitudinal Heat Flow Technique

Keywords

arc resistance; compressive strength; dielectric strength; dilatometry; dissipation factor; glass-bonded mica; heat distortion; impact resistance; interferometry; linear thermal expansion; mica; modulus of rupture; permittivity; porosity; resistivity; Rockwell hardness; specific gravity; synthetic mica; tensile strength; thermal conductivity; Ceramic electrical/electronic devices/applications; Glass electrical/electronic insulation; Heating tests--electrical insulating materials; Mica;

ICS Code

ICS Number Code 29.035.50 (Mica based insulating materials)

DOI: 10.1520/D1039-94R99E01

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