Effect of humidity and thermal aging on the absorption characteristics in polymer film

Abstract

The absorption characteristics of polyimides and polyimide fluorocarbon polymer films were studied at different weathering conditions and after thermal aging. The absorption current increased while the resorption current showed greater time dependence in the presence of humidity. The magnitudes of the residual voltage decreased with increase of humidity and temperature, but increased after thermal aging. The absorption and resorption current also did not satisfy the traditional Curie-Von Schweidler law after weathering and aging. © 1992 Printed in India.