A pressureless polymer pipe
    2.
    发明公开
    A pressureless polymer pipe 有权
    Ein druckloses Polymerrohr

    公开(公告)号:EP1584852A1

    公开(公告)日:2005-10-12

    申请号:EP04008180.4

    申请日:2004-04-03

    IPC分类号: F16L9/12 C08F210/16 C08L23/08

    摘要: A pressureless pipe and polymer composition for making such a pipe as well as the use of the polymer composition for pressureless pipes and supplementary parts, are disclosed. The polymer composition is characterised in that
       the polymer comprises a multimodal ethylene polymer including a copolymer of ethylene and a C 4 -C 10 α-olefin comonomer;
       the ethylene polymer has a total density of at least 950 kg/m 3 and a MFR 5 of 0.2-2.0 g/10 min;
       the ethylene polymer has a modulus of elasticity, determined according to ISO 178 of more than 1200 MPa;
       the ethylene polymer has a resistance to slow crack growth, determined according to ASTM F 1473 of more than 1.5 hrs.

    摘要翻译: 公开了一种用于制造这种管子的无压管和聚合物组合物以及用于无压管和辅助部件的聚合物组合物的用途。 聚合物组合物的特征在于聚合物包含多乙烯聚合物,其包括乙烯和C 4 -C 10α-烯烃共聚单体的共聚物; 乙烯聚合物的总密度为至少950kg / m 3,MFR 5为0.2-2.0g / 10min; 乙烯聚合物的弹性模量根据ISO 178测定超过1200MPa; 乙烯聚合物具有耐缓慢裂纹生长,根据ASTM F 1473测定超过1.5小时。