Process for the continuous production of high modulus filament of
polyethylene
    4.
    发明授权
    Process for the continuous production of high modulus filament of polyethylene 失效
    连续生产高模量聚乙烯长丝的工艺

    公开(公告)号:US4415522A

    公开(公告)日:1983-11-15

    申请号:US238852

    申请日:1981-02-27

    摘要: A process for the production of a high modulus filament of polyethylene which comprises heating high density polyethylene to a temperature above its melting point, extruding the polymer to form a filament, subjecting the filament immediately after extrusion to a tension under such conditions that the filament is shaped without substantial orientation of its molecules, cooling the filament at a rate of cooling in excess of 15.degree. C. per minute, and drawing the filament to a high draw ratio.

    摘要翻译: 一种用于生产聚乙烯的高模量长丝的方法,其包括将高密度聚乙烯加热至高于其熔点的温度,挤出聚合物以形成长丝,在挤出之后立即对丝进行拉伸, 形状没有其分子的实质取向,以每分钟超过15℃的冷却速率冷却细丝,并将丝拉伸至高拉伸比。

    Process for high modulus polymeric materials
    6.
    发明授权
    Process for high modulus polymeric materials 失效
    高模量聚合材料的工艺

    公开(公告)号:US4254072A

    公开(公告)日:1981-03-03

    申请号:US943855

    申请日:1978-09-19

    摘要: A process for the production of a high modulus filament of polyethylene which comprises heating high density polyethylene to a temperature above its melting point, extruding the polymer to form a filament, subjecting the filament immediately after extrusion to a tension under such conditions that the filament is shaped without substantial orientation of its molecules, cooling the filament at a rate of cooling in excess of 15.degree. C. per minute, and drawing the filament to a high draw ratio.This is a continuation of application Ser. No. 860,999, filed Dec. 15, 1977, abandoned, which is a continuation of Ser. No. 553,656, Feb. 27, 1975, now abandoned.

    摘要翻译: 一种用于生产聚乙烯的高模量长丝的方法,其包括将高密度聚乙烯加热至高于其熔点的温度,挤出聚合物以形成长丝,在挤出之后立即对丝进行拉伸, 形状没有其分子的实质取向,以每分钟超过15℃的冷却速率冷却细丝,并将丝拉伸至高拉伸比。