| abstract |
The present invention provides a class of ultra-high molecular weight polyethylene and its preparation, specifically, the present invention provides a kind of ultra-high molecular weight polyethylene particles, the particles have the following characteristics: (a) the viscosity average molecular weight is 500,000-150 10,000 g/mol; (b) ≥95 wt% can pass through a mesh sieve of 100 microns, and d 50 is 40 μm≤d 50 ≤60 μm. The ultra-high molecular weight polyethylene can be used for preparing lithium battery separators. |