纤维级聚丙烯S800的开发和生产

介绍了甘肃兰港石化有限公司采用加氢法开发和生产聚丙烯纤维级树脂S800的过程。控制聚合釜的加氢量，聚合反应的工艺条件，加强丙烯精制，控制主辅催化剂加入量，以确保产品质量稳定和降低灰分。S800的熔体流动指数始终稳定在16－20g/10min，屈服拉伸强度高于35MPa,0.4mm的鱼眼低于3个／1520cm^2,0.8mm的鱼眼低于10个／1520cm^2，产品优级品率达到90％以上。经多家丙纶厂试用，该产品质量可靠，加工性能良好。

The development and production of fibre-grade polypropylene resin S800

This paper introduced the fibre - grade polypropylene resin S800 developed and produced with hydrogenation process by Cansu Langang Petrochemical Co., Ltd.. The hydrogen amount inside the polymerizer, conditions of polymerization, refining of propylene and the dosage of main catalyst and promoter were properly controlled in order to ensure the stability in product quality and lower the ash content of the product. The results show that the melt flow index of S8(X) is always in the range of 16-20 g/ 10min, and its tensile strength at yield is higher than 35 MPa. The number of the fish eye with diameter of 0.4 mm and 0.8 mm is less than 3 per 1 520 cm2 and 10 per 1 520cm2, respectively. The superior grade ratio of the resin S800 reaches a value higher than 90% . The trial applications in several polypropylene fiber factories verity the reliable quality and goo|d processabilily ol the resin S800.