ASTM D352-97 (R2016) PDF Download

The ASTM D352-97 (R2016) standard provides guidelines for testing the performance of bonded mica splittings and bonded mica paper that are used for various insulation purposes, such as commutator insulation, hot molding, and heater plates.

The standard includes several test methods to evaluate different aspects of the mica insulation material. One such test is the compressive creep test, which determines the material's ability to resist deformation under compressive load and elevated temperatures. This test is particularly important for materials used as commutator segment insulation. It can be used for acceptance tests and manufacturing control.

The standard also includes other test methods, such as the dielectric strength test, mica or binder content test, molding test, organic binder test, resistivity test, silicone binder test, and stability under heat and pressure test. Each test method is assigned specific sections within the standard.