This specification covers the requirements for epoxy thermosetting molding compounds and provides for their identification, quality control, and purchase. Material covered in this specification consists of mixtures or blends of epoxy resins and curing agents intimately combined with fillers, reinforcements, colorants, and other chemical agents. The epoxy molding compounds are classified into grades based on physical properties, which may be further classified into classes (dielectric or flame retardant) according to special requirements. The molding compounds shall be manufactured with uniform composition and with the apparent density, bulk factor, flow, particle size, and Au: Pls. note that although caption make reference to color online, figures in print will appear in black and white. In conformity with the requirements specified. Tests for water absorption, flexural strength, impact resistance, tensile strength, deflection temperature under load, permittivity and dissipation factor, wet and dry dielectric strength, arc resistance, and flammability shall be performed and shall conform to the requirements specified.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers requirements for epoxy thermosetting molding compounds. It provides for their identification, quality control, and purchase in such a manner that the purchaser and the seller can agree on the substantial similarity of different commercial lots or shipments.
1.2 The compounds covered under this specification consist of mixtures or blends of epoxy resins and curing agents intimately combined, in an unreacted or partially reacted condition, with fillers, reinforcements, colorants, and other chemical agents.
1.3 The values stated in SI units are to be regarded as the standard.
—The properties included in this specification are those required to identify the kinds of molding compounds covered. There may be other requirements necessary to define particular characteristics. These will be added to the specification as their inclusion becomes generally desirable and the necessary test data and methods become available.
—There is no similar or equivalent ISO 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.
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
D495 Test Method for High-Voltage, Low-Current, Dry Arc Resistance of Solid Electrical Insulation
D570 Test Method for Water Absorption of Plastics
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
D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials
D883 Terminology Relating to Plastics
D1896 Practice for Transfer Molding Test Specimens of Thermosetting Compounds
D2863 Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics (Oxygen Index)
D3892 Practice for Packaging/Packing of Plastics
epoxy; molding compounds (thermosetting) ;
ICS Number Code 83.140.99 (Other rubber and plastic products)
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