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POLYETHYLENE COMPOSITION WITH IMPROVED BALANCE OF SLOW CRACK GROWTH RESISTANCE, IMPACT PERFORMANCE AND PIPE PRESSURE RESISTANCE FOR PIPE APPLICATIONS
POLYETHYLENE COMPOSITION WITH IMPROVED BALANCE OF SLOW CRACK GROWTH RESISTANCE, IMPACT PERFORMANCE AND PIPE PRESSURE RESISTANCE FOR PIPE APPLICATIONS
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机译:聚乙烯组合物,改善了慢速裂纹增长阻力,冲击性能和管道耐压性的平衡
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摘要
The present invention relates to a polyethylene composition comprising a base resin which comprises a low molecular weight ethylene homo- or copolymer fraction (A) and a high molecular weight ethylene homo- or copolymer fraction (B), wherein fraction (A) has a lower average molecular weight as fraction (B), characterized in that the base resin has a weight average molecular weight (Mw) of from 190,000 g/mol to 300,000 g/mol and a complex viscosity at 0.05 rad/s (·* 0.05 rad/s ) of 75 to 500 kPa·s, a process for the production of said polyethylene composition, an article, suitably a pipe, comprising said polyethylene composition, and the use of said polyethylene composition according for the production of an article.
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机译:聚乙烯组合物本发明涉及一种聚乙烯组合物,其包含基础树脂,所述基础树脂包含低分子量乙烯均聚物或共聚物级分(A)和高分子量乙烯均聚物或共聚物级分(B),其中级分(A)具有较低的分子量。平均分子量作为馏分(B),其特征在于基础树脂的重均分子量(Mw)为190,000 g / mol至300,000 g / mol,复数粘度为0.05 rad / s(·* 0.05 rad / s s)为75至500kPa·s,用于生产所述聚乙烯组合物的方法,包含所述聚乙烯组合物的制品,合适地为管,以及所述聚乙烯组合物在制品生产中的用途。
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