| 摘要 |
本发明提供一种可提供机械强度高，耐热性、耐磨耗性优异的成形体的熔点高且显示出高结晶性的新颖超高分子量聚乙烯粒子。本发明的超高分子量聚乙烯粒子满足：(1)固有黏度(η)为15dL/g以上且60dL/g以下；(2)体密度为130kg/m 3 以上且700kg/m 3 以下；(3)利用示差扫描型热量计(DSC)测定的1st扫描的熔点(Tm1)与2nd扫描的熔点(Tm2)的差即△Tm(△Tm=Tm1-Tm2)为11℃以上且30℃以下。; (2) the bulk density is 130 kg/m 3 or more and 700 kg/m 3 or less; (3) the difference of the melting point of the 1st scan (Tm1) and the melting point of the 2nd scan (Tm2) measured by a differential scanning calorimeter (DSC), that is, △Tm (△Tm=Tm1-Tm2), is 11℃ or more and 30℃ |
