SCHROEDER, DAVID W.,FREEDMAN, JORDAN H.,GUNTER, JAMES E.,SALYER, BRIAN D.,HAWKINS, H. GENE
申请号：
CA2586624
公开号：
CA2586624C
申请日:
2005.10.06
申请国别(地区):
CA
年份:
2014
代理人:
摘要：
A radiation crosslinked (50 kGy), pressure-treated UHMWPE material has beendeveloped by applying compressive force on a crosslinked polymer in adirection orthogonal to an axial direction. The deformed material is thencooled while held in a deformed state. The resulting material is anisotropic,with enhanced strength oriented along the axial direction. The directionallyengineered material is oxidatively stable even after four weeks of acceleratedaging in a pressure vessel containing five atmospheres of oxygen (ASTM F2003).Because of its oxidative stability, the deformation processed material is asuitable candidate for air-permeable packaging and gas sterilization, whichhas thus far been reserved for remelted highly crosslinked UHMWPEs.
