The Effect of High Pressure on the Mechanical Behavior of Semi-Crystalline Polymer and Its Cold Formability

Cold forming of polymeric materials is receiving increasing attention in the manufacturing industry. This fabrication procedure is very broad in scope and includes a number of forming processes, such as forging, impact extrusion, stamping and hydrostatic extrusion.

In this context, an experimental work was performed to study the effect of high pressure on the deformation behavior of polymeric materials as related to cold formability of polymers.

This study result indicates that application of a superimposed hydrostatic pressure during deformation of semi- crystalline polymer affects significantly drawability and stress crazing and whitening of polymeric materials.