Processing - property relations from biaxial deformation of PET (polyethylene terephthalate)

摘要

A numerical simulation with correlation between the stretch blow moulding process parameters and the eventual room temperature mechanical properties of the formed PET (Polyethylene Terephthalate) bottle enables the bottle manufacturers to optimize the design of the preform and the mechanical performance of the bottle. In this study PET samples were processed at conditions relevant to stretch blow moulding process and subsequently Young's moduli at room temperature were determined from the uniaxial tensile tests. A correlation was established between the network stretch of the Buckley material model and the Young's modulus.