ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE AND LIGHTLY-FILLED COMPOSITES THEREOF

摘要

homogeneous particulate composite comprising 75 to 99.5% by weight of polyethylene with ultra-high molecular weight of approximately 0.5 to 25% by weight of at least one other compound of filling, these composite having a surface area of at least 4 m2 / g. The invention also relates to a polyethylene ultra-high molecular weight particulate form without filler. Dense articles, resistant fillers are produced from these materials according to cold-pressing processes and free sintering. The invention also relates to the commercial mixtures of ultra-high molecular weight polyethylene cold pressed and freely sintered containing at least 25% of these composite polyethylene or ultra-high molecular weight containing no filler.