SIKIŞTIRMA METODU İLE PAMUK LİFLERİNİN EĞRİLEBİLİRLİĞİNİN TESPİTİ

Year 2009, Volume: 19 Issue: 4, 265 - 272, 01.12.2009

Mehmet Emin Yüksekkaya

Abstract

Bu çalışmada yeni bir sıkıştırma test cihazının farklı pamuk liflerinin eğrilebilirliğinin tespitinde kullanılabilirliği araştırılmıştır. Bu amaç için farklı renklere boyanmış pamuk lifleri seçilerek elyafın sürtünme özellikleri ile eğrilebilmesi arasındaki bağlantı incelenmiş aralarındaki ilişki belirlenmeye çalışılmıştır. Pamuk liflerinin yüzey özellikleri boyama sürelerinin farklı olması sebebi ile farklılık göstermiştir. Farklı elyafların eğrilebilme özelliğinin belirlenmesinde karşılaşılan problemlerin hızlı bir şekilde tespit edilebilmesi için Quickspin® “hızlı eğirme” sistemi kullanılmıştır. Elyaf yüzeyinde meydana gelen değişiklikler sebebi ile koyu renkte boyanmış olan pamuk örneklerin aynı oranda sıkıştırılabilmeleri için daha fazla sıkıştırma kuvvetine ihtiyaç olduğu tespit edilmiştir. Çalışmalar neticesinde doğrusal bir sıkıştırma eğrisine sahip olan pamuk liflerin daha kolay eğrilebildiği gözlemlenmiştir. Ayriyeten verilerin analizinden görülmüştür ki sıkıştırma işlemi esnasında yüksek sıkıştırma kuvvetine ihtiyaç duyulan elyafın eğrilebilme özelliğinin azalmakta olduğu izlenmiştir

Keywords

Sıkıştırma eğrisi, Eğrilebilirlik, Çekme kuvveti, Kayma-yapışma, Yüzey özellikleri

ASSESSMENT OF SPINNABILITY OF COTTON FIBRES BY COMPRESSION METHOD

Abstract

In this study, a new compression tester was evaluated in order to determine the spinnability of different cotton fibres. For this purposes, various colours of dyed cotton fibres were chosen for spinning test in order to determine the relationship between the frictional properties and the spinnabilty of cotton fibres. The surface characteristics of cotton fibres were modified during the dyeing applications by adapting a different processing time. The Quickspin® system was employed to provide a rapid assessment of the likely processing problems associated with different cotton fibres. It was found that a higher load was necessary in order to compress the dark coloured cotton samples due to the changes occurred on the surface properties of fibres. It was observed that it was easier to spin the cotton fibres having the linear compression curves. Additionally, it was seen from the analysis of the data that the fibres having a higher compression force reducing the spinnablity of cotton fibres

Keywords

Compression curve, Spinnability, Drafting force, Stick-slip, Surface properties

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