On Temperature Dependence of Processing Ability of Polycarbonate

Abstract

pendence of the processing ability of sheet plastics in relation to the cold and warm processing of the polymer. Sheet specimen was penetrated by a solid punch at constant rate of stroke at various temperatures and the penetration depth at fracture was measured. The processing ability of polycarbonate sheet (1mm thick) was gradually improved as the increase of the temperature up to the glass transition temperature.The strain recoverey in the Erichsen test was examined in the same way as the uniaxial compression test, and a well parallelism between the results obtained under a combined stress such as the Erichsen bulging and those under an uniaxial compression as the above was found.be available for the environmental stress cracking test of the polymer.