PTT/PET并列复合纤维的自卷曲形态  

Self-crimping Configuration of PTT/PET Side-by-Side Composite Fiber

作　　者：王江水[1] 罗锦[1] 王府梅[1] 

机构地区：[1]东华大学纺织学院,上海201620

出　　处：《东华大学学报（自然科学版）》2009年第4期401-405,共5页Journal of Donghua University(Natural Science)

摘　　要：通过观察4种PTT(聚对苯二甲酸丙二醇酯)/PET(聚对苯二甲酸乙二醇酯)并列复合纤维的横截面形态、纵向自卷曲形态,测量不同横截面形态和不同线密度的复合纤维的卷曲参数,计算比较单纤维线密度相同但截面形态不同的并列复合纤维的卷曲曲率,以及截面形态相同但单纤维线密度不同的并列复合纤维的卷曲曲率,探明PTT/PET并列复合自卷曲纤维的卷曲参数与其形态结构之间的联系.主要获得如下结论:4种不同品牌的PTT/PET并列复合纤维的横截面形状互不相同,有圆形、花生形、香梨形多种截面形状;随着横截面长宽比的减小,纤维自卷曲的曲率呈下降趋势;相同横截面的纤维,随着单纤维线密度的增加,纤维自卷曲的曲率相应减小;而不同的纺丝后加工方法会影响自卷曲纤维的卷曲形态.The cross-sectional shapes and self-crimping configurations of four PTT （polytrimethylene terephthalate）/PET （polyethylene terephthalate） side-by-side composite fibers were observed. Based on measurement of shot photos, the calculated crimp parameters of PTT/PET fibers were made comparative analysis among both four fibers in same linear density of single filament and one fiber in different finenesses. The relationship was identified between crimp parameters and configurations of PTT/PET fiber. The results show that four PTT/PET fibers have different cross-sectional shape, namely circular, peanut, pear shape. With the decreasing of the ratio of long and short axis of cross-section, the crimp curvature gets lower. The crimp curvatures of PTT/PET fiber in same cross-sectional shape decrease with the increasing of mono-filament linear density. Moreover, different manufacture ways of yarn also influence on the crimp structure of PTT/PET fibers.

关 键 词：PTT/PET并列复合纤维 自卷曲 横截面 卷曲曲率 卷曲螺距 卷曲半径 

分 类 号：TS151[轻工技术与工程—纺织材料与纺织品设计]