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A group of insulation products based on a polyimide polymer have been introduced to the electrical industry gradually since late 1959. This group of products, sold under the trade name of "Pyre-M.L.®," includes wire enamels, coated glass fabrics, and an insulating varnish. The polyimides were selected for commercialization as the most thermally stable type of polymer yet characterized in...
A trend towards miniaturization of equipment and accompanying higher operating temperatures exists in many phases of the electrical industry today. This trend, especially when coupled with the many military applications requiring a high degree of thermal stability, has indicated a need for new high-temperature insulation components. Such a need has been further crystallized by the inadequacies of...
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