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Factors Governing the Long-term Stability of Polyester-based Recording Media

Thie report summarizes the conclusions from studies of the chemistry and aging characteristics of magnetic tape at the US National Institute of Standards and Technology in the last decade. The usual cause of tape failure is the degradation of the properties of the polyester polyurethane binder layer; Acidic pollutants are particularly damaging and high humidities or high temperatures also accelerate degradations