Seçilmiş İpliklerde Zweigle İplik Tüylülüğü Sonuçlarına Farklı Test Hızlarının Etkisi

ÖZET: Bu çalışmada, Zweigle G657 cihazında iplik tüylülüğü sonuçlarına farklı test hızlarının etkisi araştırılmıştır. Ölçümler, cihazda seçenek olarak sunulan 25 m/dk, 50 m/dk, 100 m/dk ve 400 m/dk olmak üzere dört farklı test hızında gerçekleştirilmiştir. Test hızının etkisi SPSS programı kullanılarak istatistiki olarak incelenmiştir. İplik tüylülüğü sonuçları üzerinde, test hızındaki değişimin direkt olarak etkili olduğu görülmüştür. Tüylerin sınıflandırılmasında 10 mm’ye kadar, test hızları arasındaki farkın önemli seviyede olduğu görülmüştür. Aralarındaki bu farklılıklar 10 mm’den sonra önemsiz düzeye gelmiştir. Test hızı arttıkça ipliğin S3 tüylülük değerlerinde genel olarak bir artış eğilimi gözlenmiştir. Ancak bu çalışmada literatürden farklı olarak, çalışma için seçilen farklı yapıdaki ipliklerde farklı sonuçlarda elde edilmiştir. Farklı hızlarda elde edilen sonuçların karşılaştırma amaçlı kullanılmasının doğru olmayacağı net olarak görülmektedir. Yeni versiyon cihazlarda daha yüksek test hızlarına çıkma eğilimi bulunmaktadır. Bu nedenle, S3 tüylülüğü bilgisi verilirken, hangi cihazda ve hangi test hızında ölçüldüğü bilgisinin verilmesi gerektiği çıkarımı yapılmıştır.

The Effect of Different Test Speed on Zweigle Yarn Hairiness Results in Selected Yarns

ABSTRACT: In this study, the effect of different test speeds on yarn hairiness results in the Zweigle G657 device was investigated. Measurements were carried out at four different test speeds of 25 m/min, 50 m/min, 100 m/min and 400 m/min, which are available as options on the device. The effect of test speed was analyzed statistically using the SPSS program. It has been seen that the change in test speed has a direct effect on the yarn hairiness results. It has been observed that the difference between test speeds up to hairs in 10 mm in the classification of hair numbers is significant. These differences between them became insignificant after hairs in 10 mm. It can be generally said that an increasing trend was observed in the yarn S3 hairiness values as the test speed increased. However, different results were obtained in the yarns of different structures selected for the study different from the literature. It is clearly seen that it would not be appropriate to use the obtained results from different speeds for various comparisons. There is a tendency for higher test speeds on newer version devices. For this reason, it has been deduced that it is necessary to give the information on which device and at which test speed it was measured while giving the S3 hairiness information.

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The Comparison Of The Yarn Hairiness Test Devices Using The Hairiness Length Classification System

Yarn hairiness is an important element of total quality control. Zweigle system and its different versions are widely used commercially in the industry for the determination of yarn hairiness and these devices are only on hairiness. The measurement sensor on them classifies the hairs according to their length. In this research, Zweigle G567 and Uster Zweigle HL400 using the hairiness length classification system were compared. The most important difference between the two devices is that the recommended measuring speed for Uster Zweigle HL400 is eight times higher than Zweigle G567. In the study, thirteen yarns in different structures were used. The hairiness results in each mm were evaluated statistically in the SPSS program. It was observed that there were significant differences between the measurement results of two devices. In the literature, it is stated that there is an increase in the number of hairs with the increase in test speed of the Zweigle series hairiness devices. However, it was found in this study that there was a decrease in the number of hairs in most of the yarns measured in HL400 that use higher test speed. The more surprising result was that the strong correlation was determined between G567 and HL400 although the hair number obtained from devices show significant differences. This shows that the devices gave correlated results according to its operating principle, but the results of two devices operating at different speeds should not be compared with each other on the same test parameters.

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Örme Kumaş Gözenekliliği ile Hava Geçirgenliği Arasındaki İlişkinin İncelenmesi

ÖZET: Bu çalışmada farklı yapı ve özellikte on iki adet 1x1 rib örme kumaş kullanılmıştır. Örme kumaşların hava geçirgenlikleri ölçülmüş ve mikroskop altında görüntüleri alınmıştır. Görsellerin MATLAB paket programında görüntü işleme teknikleriyle görüntü doku parametreleri analiz edilmiştir. Kumaş gözenekliliği ile ilgili sekiz farklı görüntü doku parametresi ve hava geçirgenliği arasındaki ilişki korelasyon analizi ile istatistiki olarak incelenmiştir. Aynı hammaddeden üretilmiş kumaşlarda kumaş gözenekliliği parametreleri ile hava geçirgenliği arasında güçlü bir ilişki bulunmuştur. Ancak farklı hammaddeler kullanıldığında bu güçlü ilişkinin azaldığı gözlenmiştir. Örme kumaşların hava geçirgenliği üzerinde iplik ve kumaş gözenekliliğine ek olarak lif özellikleri ve karışım oranının da etkileri tespit edilmiştir.

Investigation of the Relationship Between Porosity of Knitted Fabrics and Air Permeability

ABSTRACT: In this study, twelve 1x1 rib knitted fabrics containing different structure and features were used. Air permeability of knitted fabrics was measured and their images were taken under a microscope. Textural properties of images were analyzed with image processing techniques in MATLAB package program. The relationship between air permeability and eight different textural parameters of images related to fabric porosity were analyzed statistically with correlation analysis. A strong relationship was found between fabric porosity parameters and air permeability in fabrics produced from the same raw material. However, it was observed that this strong relationship decreased when different raw materials were preferred. The effects of fiber properties and blending ratio were determined on the air permeability of knitted fabrics in addition to yarn and fabric porosity.

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Investigation of the oxidative self polymerization of dopamine under alkaline conditions on wool fabrics

Most studies about polydopamine in the textile field have been related to cotton fibers. There are not many studies about the use of polydopamine on wool fibers. A limited number of studies have focused on the coloring of wool, whereas wool is the fiber with the highest variety of intermolecular attraction forces among all natural and man-made fibers. 

Polydopamine contains high amounts of catechol and amine functional groups due to its structure. In this study, different from the literature, oxidative self polymerization of dopamine was achieved on wool fabric for different periods of time, and the coated fabrics were examined with characterization tests and spectrophotometrically. 

In this study, lower values were obtained than lightness (L*) values reported for other fibers in previous studies, and it was concluded that the wool-PDA interaction is superior to other fibers. Scanning electron microscopy and energy dispersive X-ray spectroscopy results showed that the polymerization and nano-coating formed successfully and continued to remain on the surface after washing. 

The lowest lightness value was obtained in the 32 h coating. However, the lowest color change after washing was in the 16 h coating (0.44%). This result showed that the coating was completed within 16–32 hours and there was only accumulation on the surface in the later times.

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