Process for producing polyolefin materials
    1.
    发明授权
    Process for producing polyolefin materials 失效
    生产聚烯烃材料的方法

    公开(公告)号:US6017480A

    公开(公告)日:2000-01-25

    申请号:US823031

    申请日:1997-03-21

    摘要: A process for producing polyolefin materials is disclosed which comprises the steps of (a) preparing a molded article of an ultra-high-molecular-weight polyolefin having a viscosity-average molecular weight of more than 500,000; (b) stretching said article by more than thirty-fold; (c) contracting the thus stretched article to an extent ranging from 0.3 to 80% in the direction of stretch; and (d) re-stretching the thus contracted article. The resulting polyolefin materials are improved in mechanical strength and elasticity modulus.

    摘要翻译: 公开了一种生产聚烯烃材料的方法,其包括以下步骤:(a)制备粘均分子量大于500,000的超高分子量聚烯烃的模塑制品; (b)将物品拉伸三十倍以上; (c)将如此拉伸的物品在拉伸方向上收缩至0.3至80%的程度; 和(d)重新拉伸如此收缩的制品。 得到的聚烯烃材料的机械强度和弹性模量得到改善。