Abstract
The author describes several test methods which may be used to evaluate powdered epoxy resins for their potential use as integral insulation on fractional horsepower motor iron. These are the edge coverage test method, the hot plate gel time test method, the glass pellet flow test method, and the steel panel impact test method. These test methods may be of value in establishing incoming quality control specifications, thus assuring that the epoxy resin manufacturer is supplying a product which is in compliance with the requirements specified by the motor manufacturer. Some of these tests may be used in motor production to ensure the epoxy is obtaining proper cure, that powder which meets minimum edge coverage requirements is being applied, or that the substrate being coated is free from contamination. >
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