Polyethylene composition as well as preparation method, cable and application thereof

The invention relates to a polyethylene composition as well as a preparation method, a cable and application thereof. The polyethylene composition comprises high-pressure polyethylene and end-group double-bond polyethylene in a mass ratio of 1000: (1-100), the structural formula of the end-group double-bond polyethylene is # imgabs0 #, and n is a positive integer of 10-200. Compared with high-pressure polyethylene, the polyethylene composition has the advantages of high vinyl double bond content and small influence on rheological properties. 本发明涉及一种聚乙烯组合物及其制备方法、电缆、应用。上述聚乙烯组合物包括质量比为1000：（1~100）的高压聚乙烯和端基双键聚乙烯，所述端基双键聚乙烯的结构式为#imgabs0#，n为10~200的正整数。上述聚乙烯组合物较高压聚乙烯而言，具有高乙烯基双键含量，同时对流变性能影响较小。