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Effects of Level of Fiber Opening on Moisture Regain, Tenacity, and Breakage of Wool

机译:纤维开度对羊毛回潮率,韧性和破损率的影响

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We have studied the effects of the level of fiber opening, expressed in points per fiber (ppf), on the reduction in moisture regain of wool, the fiber tenacity change, and the associated level of fiber breakage in an opening process. Two kinds of short Merino cardings wool are first converted into draw slivers, which are then opened at different opening levels on an open-end rotor spinner. The draw slivers are free from vegetable matter contamination in order to limit the number of variables in this study. The results indicate that as the ppf value increases, the reduction in fiber moisture regain increases linearly. The test of fiber bundle strength reveals that fiber tenacity drops after opening, but this drop is not proportional to the level of fiber opening. Reasons for this disproportion are discussed. Percent of fiber breakage during opening is examined by measuring changes in mean fiber length before and after opening; it also increases linearly with increasing ppf values.
机译:我们研究了纤维开度的水平(以每根纤维的点数(ppf)表示)对羊毛回潮率降低,纤维强度变化以及在开纤过程中相关的纤维断裂水平的影响。首先将两种短的美利奴粗梳棉转化为拉伸条,然后在开口转子纺纱机上以不同的开口水平将其打开。为了限制本研究中变量的数量,生条没有受到植物物质的污染。结果表明,随着ppf值的增加,纤维回潮率的降低呈线性增加。纤维束强度的测试表明,开纤后纤维的强度下降,但这种下降与开纤水平不成比例。讨论了这种不均衡的原因。通过测量开纤前后平均纤维长度的变化来检查开纤期间纤维断裂的百分比;它也会随着ppf值的增加而线性增加。

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