HMPE FIBER WITH IMPROVED BENDING FATIGUE PERFORMANCE

Provided are continuous filament-based elongate bodies having improved durability and bending fatigue performance. The elongate bodies are formed from a plurality of fibers where at least one component fiber is a multifilament ultra-high molecular weight polyolefin fiber having a filament intrinsic viscosity (IVf) of from 15 dl/g to about 45 dl/g when measured in decalin at 135 DEG C, wherein said at least one multifilament ultra-high molecular weight polyolefin fiber has a tenacity of at least 32 g/denier, a denier of greater than 800, and a denier per filament of greater than 2.0. The high tenacity combined with high fiber denier and high filament denier (dpf) enhances the cyclic bend over sheave (CBOS) durability when the elongate body is incorporated in a multi-fiber construction such as a rope. 本发明提供了具有改善的耐久性和弯曲疲劳性能的基于连续长丝的细长主体。所述细长主体由多根纤维形成，其中至少一根组分纤维是复丝超高分子量聚烯烃纤维，所述复丝超高分子量聚烯烃纤维具有当在135℃下在萘烷中测量时15dl/g至约45dl/g的长丝本征粘度(IVf)，其中所述至少一根复丝超高分子量聚烯烃纤维具有至少32克/旦尼尔的韧度、大于800的旦尼尔以及大于2.0的旦尼尔/长丝。当将所述细长主体掺入多纤维构造诸如绳索中时，高韧度