【摘要】 本文研究了纺丝冷却条件对β晶相聚丙烯初生纤维中β晶相含量的影响和拉伸工艺条件与制得纤维的结构及其性质的关系。研定表明,纺丝冷却速率是纺制含β晶相聚丙烯纤维的关键工艺因素,初生纤维中的K值、拉伸温度和拉伸倍数是纺制含微孔聚丙烯纤维的主要参数。用密度法、压汞法证实制得纤维具有微孔结构,其平衡吸湿率比普通浆丙烯纤维有明显的提高。更多还原

【Abstract】 In this paper the influence of cooling condition in spinning on β crystal content in β crystalline phase IPP as-spun fiber and the relation of stretching condition with structure and properties of the drawn fiber arc studied. The result shows that the cooling rate is a key technological factor for manufacturing β phase crystalline IPP fiber, besides the K value in the as-spun fiber, stretching temperature and draw ratio are important parameters for manufacturing microporous IPP fiber. It is confirmed by density gradient and mercury penctration methods that the drawn fiber possess microporous structure. Compared with IPP fiber, the balanced moisture absorption of the drawn fiber is obviously increased.更多还原