黏彈與摩擦性質對Lycra(上標 ®)彈性織帶力學遲滯現象之影響

The Effects of Viscoelasticity and Friction on the Tensile Hysteresis of Lycra(superscript ®) Elastic Webbings

石天威(T. W. Shyr) ； 謝靜玟(J. W. Shie) ； 莊宴爾(Y. E. Jhuang)

《紡織綜合研究期刊》 21卷4期 (2011/10) Pp. 32-42

https://doi.org/10.6439/TTRJ.201110.0032

摘要

本研究以鍍碳耐隆／聚酯紗與Lycra(上標 ®)/聚酯彈性包覆紗織製Lycra(上標 ®)彈性織帶，改變Lycra(上標 ®)彈性織帶的組織結構與Lycra(上標 ®)/聚酯彈性包覆紗根數，探討Lycra(上標 ®)紗的黏彈性與紗線間摩擦性質對Lycra(上標 ®)彈性織帶拉伸－回復力學遲滯現象的影響。以伺服控制強力試驗機量測Lycra(上標 ®)紗、Lycra(上標 ®)/聚酯彈性包覆紗、與Lycra(上標 ®)彈性織帶於30%拉伸率下拉伸－回復循環過程的荷重－伸長曲線。結果顯示，Lycra(上標 ®)紗的黏彈性與紗線在織帶中的摩擦特性，使Lycra(上標 ®)彈性織帶產生力學遲滯之現象。本研究Lycra(上標 ®)彈性織帶的遲滯損耗，主要是由Lycra(上標 ®)紗的黏彈遲滯損耗所貢獻。紗線在織帶中的摩擦效應增加時，導致Lycra(上標 ®)彈性織帶的遲滯損耗增加，紗線摩擦造成的遲滯損耗比例上升，且荷重－伸長線性回歸曲線之判定係數(R^2)下降。相較於編織結構，梭織結構的Lycra(上標 ®)彈性織帶有較小的紗線摩擦效應，導致較低的力學遲滯損耗與較佳的荷重－伸長曲線之線性關係。

關鍵字

Lycra(上標 ®)彈性織帶 ； 力學遲滯

並列摘要

In this work, Lycra(superscript ®) elastic webbings, made of carbon coated PA/PET yarn and Lycra(superscript ®)/PET yarn, were used in this study. The effects of Lycra(superscript ®) viscoelasticity and friction between yarns within webbing on extension-recovery tensile hysteresis of the Lycra(superscript ®) elastic webbings were evaluated by changing fabric structure and Lycra(superscript ®)/PET yarn number. The load-elongation curves of Lycra(superscript ®) yarns, Lycra(superscript ®)/PET yarns, and Lycra(superscript ®) elastic webbings at 30% elongation of extension-recovery cycles were measured using a servo control universal testing machine (GT-7001-MC01). It was found that the tensile hysteresis was caused by the viscoelasticity of Lycra(superscript ®) yarn and the friction between yarns within webbing. Moreover, the hysteresis loss of Lycra(superscript ®) elastic webbing was mainly contributed from the hysteresis loss of viscoelastic Lycra(superscript ®) yarn. When the friction between yarns within webbing increased, it caused the following results, such as increased the hysteresis loss of Lycra(superscript ®) elastic webbing, increased the proportion of friction hysteresis, and decreased the coefficient of determination (R^2) of load- elongation curve. Compared with the flat webbing, the belt webbing had smaller friction between yarns within webbing, lower tensile hysteresis loss, and better linearity of load-elongation curve.

並列關鍵字

Lycra(superscript ®) elastic webbing ； tensile hysteresis