公开(公告)号：WO2015023931A3

公开(公告)日：2015-04-09

申请号：PCT/US2014051238

申请日：2014-08-15

Applicant: BIOMET MFG LLC

Inventor： FREEDMAN JORDAN H ,  SCHROEDER DAVID W

IPC: C08J7/00 ,  B29C71/02

CPC classification number: B29C71/02 ,  B29B13/02 ,  B29C35/0227 ,  B29C47/0004 ,  B29C47/0071 ,  B29C2035/0844 ,  B29C2035/085 ,  B29C2035/0877 ,  B29C2071/022 ,  B29K2023/0683 ,  B29K2105/253 ,  B29K2105/255 ,  B29K2995/0094 ,  B29K2995/0096 ,  B29L2031/06 ,  C08J7/08

Abstract: Heat treating UHMWPE by applying pressure with radial constraint at suitable times during a heating protocol reduces or eliminates cavitation, which is otherwise observed to occur when the UHMWPE is heated to a temperature above 300°C. Heat treated UHMWPE can undergo subsequent processing involving crosslinking, deformation, doping with antioxidant, and homogenizing or annealing. Heating during these steps can be carried out even above the onset melt temperature of the UHMWPE without loss of physical properties.

Abstract translation: 在加热过程中通过在适当的时间施加径向约束的压力来热处理UHMWPE减少或消除了空化现象，否则在UHMWPE加热到300℃以上时会发生空化现象。 热处理UHMWPE可以进行后续加工，包括交联，变形，掺入抗氧化剂，均质化或退火。 在这些步骤中加热可以在超高分子量聚乙烯的起始熔融温度以上进行，而不会损失物理性质。