Fire-off’un Pamuk ve Pamuk/Polyester Kumaşlarda Yanma Davranışının İncelenmesi

Bu çalışmada, fosfor-azot sinerjisi içeren bir güç tutuşurluk kimyasalı olan Fire-off ile apre uygulanmış, giyim ve ev tekstilinde kullanılabilecek pamuk ve pamuk/polyester (Co/PET) karışımı kumaşların kapsamlı yanma davranışları incelenmiştir. Deneysel çalışmalarda, farklı karışım oranlarına ve farklı gramaja sahip kumaşlar kullanılmış olup kumaşlar apre öncesi ve sonrası yanma risklerine göre sıralanmıştır. İşlem görmemiş %35/65 Co/PET kumaş yangın riski açısından en tehlikeli kumaş olarak saptanmış, fakat bu kumaş Fire-off apresi sonrası en güvenli hale gelmiştir. Konik kalorimetre verileri, ayrıca, işlem görmüş Co/PET kumaşların daha az yanma ısısı ürettiğini ve LOI değerlerindeki artış ile de doğrulanan daha iyi bir güç tutuşurluk özelliği kazandığını göstermiştir. Bütün kumaş tipleri için apre sonrası düşüş gözlenen efektif yanma ısısı, maksimum ısı yayılım oranı ve toplam ısı yayılım oranı değerleri gözönüne alındığında ise Fire-off’un alev yayılımını önlediği sonucuna varılmaktadır.

Anahtar Kelimeler:

Co/PET, Yanma davranışı, Konik kalorimetre, Yangın riski, Isı yayılımı

Investigation of Combustion Characteristics of Fire-off on Cotton and Co/Pet Fabrics

In this research, combustion behaviors of cotton and cotton/polyester (Co/PET) blend fabrics, which can be used in apparel and home textiles treated with phosphor-nitrogen synergetic flame-retardant (FR) agent, called Fire-off, were investigated. Different blend ratio and areal density of fabrics were used in the experiments and fabrics were ranked before and after treatment in terms of burning hazard. Untreated 35/65% blend Co/PET fabric was found most hazardous in accordance with fire risk. However, it became the safest after FR treatment with Fire-off. Cone calorimetric data, besides, showed that the treated cotton and Co/PET blend fabrics generated less heat of combustion and obtained better FR properties, which can be also confirmed by increase of LOI. Considering the decreased values of effective heat of combustion (EHC), peak heat release rate (pHRR) and total heat release rate (THR) for all samples, it is concluded that Fire-off is effective for preventing the flame spread.

Keywords:

Co/PET, Combustion behavior, Cone calorimeter, Fire risk, Heat release,

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