BALLISTIC IMPACT RESISTANCE OF BIAXIALLY ORIENTED POLYPROPYLENE

摘要

Biaxially oriented polypropylene (PP) processed by cross-rolling was investigated for application as an improved ballistic resistant material. Cross-rolled PP has greatly improved toughness properties as indicated by both puncture and ballistic tests. Cross-rolling creates a lamellar morphology which is responsible for the unique cone-shape damage mechanism obtained under ballistic deformation conditions.