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本发明涉及一种用于双峰聚乙烯管的钙盐晶体改性聚丙烯皮层的制备方法,其特征在于以茂金属催化合成的全同立构聚丙烯为原料与改性硫酸钙晶须为填料共混制备了皮层材料,所述皮层材料通过共挤出工艺,在挤出的茂金属催化合成的双峰聚乙烯表面共挤出一层钙盐晶体改性聚丙烯皮层。本发明的优点:1)过程绿色环保、加工性能好、成本低;2)有效解决了在共
The present invention relates to a bimodal polyethylene tube calcium salt crystal modified polypropylene cortex preparation, characterized in that the metallocene catalyzed synthesis of isotactic polypropylene as raw materials and modified calcium sulfate whiskers Filler Blending A cortical material was prepared which coextruded a layer of calcium salt crystal-modified polypropylene cortex on the extruded metallocene-catalysed bimodal polyethylene surface by a co-extrusion process. The invention has the advantages that: 1) the process is green and environmental-friendly, the processing performance is good and the cost is low; 2)