丙纶烟用丝束料在间歇式聚丙烯装置上的研制

Development of the powder PP for fiber of cigarette filter in batch bulk polymerization plant

采用氢调方法,在间歇式液相本体法聚丙烯装置上研制生产了粉料烟用丝束料。粉料烟用丝束料的熔体流动指数为20.8g/10 min,等规指数大于或等于97%,灰分为130μg/g,分子量分布为3.8。该产品与用过氧化物降解法制得的粒料烟用丝束料进行了纺丝对比,说明聚丙烯粉料用于生产烟用丝束是可行的。

By the method of hydrogen regulating, the powder polypropylene (PP) for fiber of cigarette filter was developed in batch bulk polymerization PP plant. The PP grade was featured of melt index of 20.8 g/10 min, isotacticity of 97%, ash of 130 μg/g and molecule weight distribution of 3.8. A comparison of spinnability between the PP grade and the granular PP prepared with peroxide degradation process was performed, and the result showed that both PP products were suitable for producing cigarette filter.