These test methods are useful to determine compliance of thermally conductive sheet electrical insulation with specification requirements established jointly by a producer and a user.

These test methods have been found useful for quality assessment. Results of the test methods can be useful in apparatus design.

1. Scope

1.1 This standard is a compilation of test methods for evaluating properties of thermally conductive electrical insulation sheet materials to be used for dielectric applications.

1.2 Such materials are thin, compliant sheets, typically produced by mixing thermally conductive particulate fillers with organic or silicone binders. For added physical strength these materials are often reinforced with a woven or nonwoven fabric or a dielectric film.

1.3 These test methods apply to thermally conductive sheet material ranging from about 0.02 to 6-mm thickness.

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 18.1.2 and 19.1.2.

1.5 The values stated in SI units are to be regarded as standard.

Note 1—There is no IEC publication or ISO standard equivalent to this standard.

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

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

D257 Test Methods for DC Resistance or Conductance of Insulating Materials

D374M Test Methods for Thickness of Solid Electrical Insulation (Metric)

D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension

D624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers

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

D883 Terminology Relating to Plastics

D1000 Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applications

D1458 Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation

D1711 Terminology Relating to Electrical Insulation

D2240 Test Method for Rubber Property--Durometer Hardness

D5470 Test Method for Thermal Transmission Properties of Thermally Conductive Electrical Insulation Materials

D6054 Practice for Conditioning Electrical Insulating Materials for Testing

Keywords

adhesion; apparent thermal conductivity; breakdown voltage; breaking strength; dissipation factor; electrical insulation; hardness; permittivity; thermal conductivity; thermal impedance; thermally conductive; thermally conductive electrical insulation; thin electrical insulation; Adhesion--electrical insulating materials; Thermal insulating materials (electrical); Thin electrical insulating materials;

ICS Code

ICS Number Code 29.035.99 (Other insulating materials)

Citing ASTM Standards

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