双轴取向聚氯乙烯(PVC-O)管材的专用配方

Ingredient of Biaxial Orientation Pipe(PVC-O)

研究了PVC-O专用配方及加工工艺。通过双辊筒开炼机对PVC-O配方进行初试并确定增韧剂的用量;通过正交试验确定了主要助剂对材料性能的影响程度,复合润滑剂的用量过多会导致材料的性能显著下降,PVC(SG-3)树脂的加入明显提高了PVC-O材料的冲击强度,但是使PVC-O配方最为关心的断裂伸长率明显下降,从而给出了主要助剂的最佳用量。布拉本德流变测试表明:PVC(SG-3)树脂的加入使材料的平衡转矩呈上升趋势,增加挤出机的能耗并造成加工困难。

Ingredient and processing for PVC-O had been researched. As follow the amount of ACR had been fixed through the open mill;the factors which would influence material character were analyzed by orthogonal test,the result showed too much of composite lubricant would influence the material character seriously. Advance impact strength was exhibited with type PVC （SG-3） resin,but the elongation at break which was the important character for the PVC-O ingredient was reduced by type PVC （SG-3） resin,higher balanced-force was got though Brabender rheometer, which showed the processing of the ingredient with PVC （SG-3） resin would be more difficult.