PP／PS与PP／Hy—PS（Garamite）改性纤维染色性能的研究

Study on Dyeing Properties of PP/PS and PP/Hy-PS（Garamite） Composite Fibers

对比了纯PP纤维、PP／PS改性纤维和PP／Hy-PS（Garamite）改性纤维的上染率、染色深度K／S值、颜色饱和度C^＊值。试验表明，由于PP／Hy-PS（Garamite）共混纤维中纳米膨润土上带有大量羟基，从而提高了聚丙烯纤维与染料分子的亲和作用，因此在相同的染色条件下，相近规格（纤度、取向度、结晶度相近）的纤维PP／Hy-PS（Garamite）体系的上染率、染色深度R／S值、颜色饱和度C^＊值都较PP／PS体系有着进一步的提高。另外，耐摩擦牢度、皂洗牢度和耐汗渍牢度试验表明，PP／Hy-PS（Garamite）改性共混纤维的染色牢度都比较好，均在4级以上，完全满足服装用要求。

The properties of pure polypropylene fibers,PP/PS and PP/Hy-PS（C-aramite） composite fibers, such as the dye up-take,K/S value, and color saturation C^＊ are discussed in this paper. The experiment results indicate that large amounts of hydroxyl groups existing in the nano-garamite helped to improve the affinity between the PP/Hy-PS（Garamite） blend fiber and the dispersed dye. Thus under the same dyeing conditions, the dye up-take, K/S value and color saturation C^＊ of PP/Hy PS（Garamite） blend fiber with almost the same denier, orientation and crystallinity have a further enhance ment than that of PP/PS blend fiber. The PP/Hy-PS（Garamite） modified blend fibers have a good color fastness to rubbing, soaping and sweating,which meet the demand of apparel industry.