Kavitasyon İşleminin Denim Kumaşların Termal Konfor Özelliklerine Etkisi

Ultrasonik işlem yada kavitasyon, kumaş yüzeyine zarar verilmeden kirlerin uzaklaştırılmasını sağlayan bir proses olarak tanımlanmaktadır. Literatürde denim kumaşların ultrasonik yıkama işlemleri ile ilgili çalışmalar bulunmaktadır ancak kavitasyon işleminin denim kumaşların ısıl konforuna etkisi ile ilgili herhangi bir çalışma bulunmamaktadır. Bu amaçla denim kumaşlara ultrasonik homojenizatör test cihazında 15, 30 ve 45 dakika olmak üzere üç farklı zamanda ve 8khz ve 16khz olmak üzere iki farklı frekansta işlem uygulanmıştır. Uygulanan kavitasyon işleminin hava geçirgenliği, ısıl iletkenlik ve ısıl soğurma değerlerini azalttığı gözlemlenmiştir. Diğer yandan kavitasyon işlemi yüzeydeki kir, yağ gibi maddeleri temizleyerek su buharı geçirgenlik değerini artırmıştır. Uygulanan kavitasyon işleminin terin dış yüzeye hızlı bir şekilde atılmasını sağlayarak konfor sağladığı, kumaştan daha az ısı iletimi sağladığı ve kavitasyon işleminden sonra denim kumaşın daha sıcak hissedildiği sonucuna varılabilir.

Anahtar Kelimeler:

ultrasonik yıkama, kavitasyon, denim kumaşlar, termal özellikler

EFFECT OF CAVITATION PROCESS ON THERMAL COMFORT PROPERTIES OF DENIM FABRICS

The process, which is defined as ultrasonic treatment or cavitation, ensures that the dirt is removed from the surfaces without damaging the fabric surface. There are studies on the ultrasonic washing processes of denim fabrics in the literature, but there is no study on the effect of the cavitation process on the thermal comfort of denim fabrics. For this purpose, denim fabrics were treated at three different times, 15, 30, and 45 minutes, and at two different frequencies 8khz and 16khz in the ultrasonic homogenizer test device. It was observed that the applied cavitation process reduces the air permeability, thermal conductivity, and thermal absorptivity values. On the other hand, the cavitation process increased the water vapour permeability value by cleaning the materials such as dirt and oil on the surface. It can be concluded that the applied cavitation process provides comfort by enabling quick throwing of the sweat to the outer surface, provides less heat conduction from the fabric, and the denim fabric felt warmer after the cavitation process.

Keywords:

ultrasonic washing, cavitation, denim fabrics, thermal properties,

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