Ultra high molecular weight polyethylene powder

Abstract

The present invention relates to an ultra-high molecular weight polyethylene powder. The object of the present invention is to provide an ultra-high molecular weight polyethylene powder which is excellent in appearance, processability, and suppression of oil smoke during processing, and has both high strength and high elongation (high orientation). The ultra-high molecular weight polyethylene powder of the present invention has a viscosity average molecular weight Mv of 10×10 4 Above and 1000×10 4 The following ultra-high molecular weight polyethylene powder, wherein the viscosity-average molecular weight Mv(A) of the mixture obtained by mixing under specific mixing conditions and the Mv satisfy the following relationship: "{Mv-Mv(A)} / Mv is less than 0.20", and the ultra-high molecular weight polyethylene powder of the present invention contains an ultra-high molecular weight polyethylene powder with a particle size of 212 μm or more, and the average pore volume of the powder with a particle size of 212 μm or more is 0.6 ml / g or more and the average pore size is 0.3 μm or more.