Blend of bimodal polyethylene with unimodal ultra high molecular weight polyethylene with improved mechanical properties

摘要

High density polyethylene blend, comprising
(A) 55 to 99 wt% of a high density multimodal polyethylene component having a density of at least 930 kg/m3, and
(B) 1 to 45 wt% of an ultra-high molecular weight polyethylene homo- or copolymer component having
(i) an intrinsic viscosity of at least 15.0 dl/g
(ii) an a nominal viscosity molecular weight (Mv) of at least 2.0*10 6 g/mol and
(iii) a molecular weight of (M w ) of at least 0.7*10 6 g/mol,
and wherein said blend has an MFR 21 of 0.05 to 10.0 g/10min and a density of at least 925 kg/m3.