Nebahat ARAL, F. Banu NERGİS, Cevza CANDAN

TUNGSTEN VE BARYUM SÜLFAT KATKILI KAPLANMIŞ KUMAŞLARIN X-RAY ZAYIFLATMA VE EĞİLME DAYANIMI ÖZELLİKLERİNİN İNCELENMESİ

Bu çalışmada, tekstil bazlı kurşun içermeyen kalkanlama malzemelerinin x-ray atenuasyon ve eğilme dayanımı özellikleri incelenmiştir. Kurşuna alternatif, tungsten ve baryum sülfat tozları radyopak katkı olarak tekstil kaplaması içerisinde kullanılmıştır. Pamuklu kumaşlar ağırlıksal olarak eşit miktarda (%60) tungsten ve baryum sülfat katkı içeren silikon kauçuk ile kaplanmıştır. Numunelerin x-ray atenuasyon oranları medikal korunma standartları göz önünde bulundurularak 80kV, 100kV ve 150kV tüp voltajı seviyelerinde ölçülmüştür. Bunun yanı sıra, tekstil yüzeyi üzerindeki kaplamanın tekrarlı eğilmelere karşı dayanımı gözlemlenmiş ve yüzeyler SEM ve EDS teknikleri kullanılarak değerlendirilmiştir. Sonuçlara göre tungsten katkı içeren silikon kauçuk kaplamalı numuneler baryum sülfat-silikon kauçuk kaplamalılara göre aynı kalınlıkta daha iyi atenuasyon oranlarına sahip olmuştur. Bununla beraber, baryum-silikon kauçuk kaplamalarda eğilme testi sonucunda yüzeyde çatlaklar meydana gelirken, tungsten-silikon kauçuk kaplamalı kumaşlar yüksek eğilme dayanımı göstermiştir

Anahtar Kelimeler:

X-ray kalkanlama, koruyucu tekstiller, kaplama kumaş, kurşunsuz, eğilme dayanımı

INVESTIGATION OF X-RAY ATTENUATION AND THE FLEX RESISTANCE PROPERTIES OF FABRICS COATED WITH TUNGSTEN AND BARIUM SULPHATE ADDITIVES

In this paper, the x-ray attenuation and the flex resistance properties of lead free, textile based shielding materials were investigated. As an alternative to lead, tungsten and barium sulphate powders were used as radiopaque additives in textile. The cotton fabrics were coated with silicone rubber that contains tungsten and barium sulphate powders in equal weight fractions (60%). X-ray attenuation ratios of samples were measured at 80kV, 100kV, and 150kV tube voltages in accordance with medical protection standards. Besides, the durability of the coatings on textile surface against repetitive folding was observed and the surfaces were examined by SEM and EDS techniques. The results showed that the tungsten additives in silicone rubber coating had better attenuation ratios when compared to the samples coated with barium sulphate-silicone rubber at similar thicknesses. In addition to this, tungsten-silicone rubber coated fabrics showed high flex resistance, where some cracks were observed on barium sulphate-silicone rubber coating

Keywords:

X-ray shielding, protective textiles, coated fabric, lead free, flex resistance,

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