An investigation on the effects of ply and single twists on strength, hairiness and abrasion resistance properties of Two-ply cotton ring-spun yarns

Çalışmada; çift kat ve tek kat bükümünün, üç farklı numaraya sahip çift katlı ipliklerin mukavemet, tüylülük ve aşınma direnci üzerindeki etkileri incelenmiştir. Katlı büküm miktarının katlı ipliklerin mukavemeti üzerindeki etkisinin, bükümün tek katlı ipliklerdeki etkisine benzer olduğu, tek kat bükümündeki artışın katlı iplik mukavemetinde düşmeye sebep olduğu görülmüştür. Kopma uzaması değerleriyle ilgili olarak; gerek katlı büküm, gerekse tek kat bükümü artışının, katlı ipliklerin kopma uzaması değerlerinde artışa yol açtığı görülmüştür. Tüylülük sonuçlarıyla ilgili olarak; gerek katlı büküm, gerekse tek kat bükümünün ipliklerin tüylülük değerleri üzerinde etkili olduğu ve büküm artışıyla birlikte tüylülük değerlerinde azalma olduğu görülmüştür. Bununla beraber; katlı büküm miktarının tüylülük değerleri üzerinde daha etkili olduğu görülmüştür. Gerek ince ipliklerde, gerekse kalın ipliklerde, çift katlı büküm miktarı arttıkça aşınma direnci artmaktadır. İnce ipliklerde, tek kat bükümünün aşınma direnci üzerindeki etkisi görülmezken, kalın ipliklerde, tek kat bükümünün düşük olmasının aşınma direncini arttırdığı görülmüştür.

Çift kat ve tek kat iplik bükümünün çift katlı pamuk ring ipliklerin mukavemet, tüylülük ve aşınma direnci özelliklerine etkileri üzerine bir araştırma

The effects of ply and single twists on tensile, hairiness and abrasion resistance properties of two-ply yarns with three different yarn counts were investigated. Tensile test results showed that the effect of ply twist on breaking strength properties of ply yarns was similar to the effect of the twist on the breaking strength of single yarns. Increases in single twist caused decreases in the strength of ply yarns. Increases in both single and ply twists caused increases in the breaking elongation of ply yarns. Single and ply twists affected the hairiness properties of ply yarns and hairiness values decreased as twist levels increased. Ply twist was more effective on hairiness properties than single twist. Abrasion resistance increased both in fine and coarse yarns as ply twist increased. Any important effect of single twist was not observed on abrasion resistance in fine ply yarn while abrasion resistance increased in coarse yarns in the case of low single twist level.

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