EFFECTS OF THE FOAM MORPHOLOGY IN THE MECHANICAL PROPERTIES OF INJECTION MOLDED THERMOPLASTIC FOAMS

摘要

The foaming reduces both material and energy consumption in the injection molding while minimizing warpage and shrinkage in the molded part. However, until now the design potential of injection molded foams has remained rather unexploited, because the relation between foam morphology and resulting mechanical properties is not fully understood. This paper studies the effect of morphological parameters, such as cell diameter, density distribution and skin thickness, on the mechanical properties of injection molded foams.