'YARN FOR ARCH AND FLAME PROTECTION, FABRIC SUITABLE FOR ARCH AND FLAME PROTECTION AND FABRIC PARTS UNDERSTANDING FABRIC'

摘要

yarn for use in arc and flame protection, fabric suitable for use in arc and flame protection and a garment comprising the fabric is a yarn, fabric and article of clothing suitable for use in arc and flame protection which comprises aramid fiber and modacrylic fiber, wherein the modacrylic fiber has less than 1.5 percent antimony and is preferably antimony free. in one embodiment, the yarn, fabric, and / or garments basically consist of (a) 50 to 80 weight percent meta-aramid fiber having a degree of crystallinity of at least 20%, (b) ) 10 to 40 percent by weight of antimony-free modacrylic fiber, (c) 5 to 20 percent by weight of para-aramid fiber, and (d) 1 to 3 percent by weight , of antistatic fiber, based on the total weight of components (a), (b), (c) and (d). In some embodiments, garments made from yarn provide thermal protection so that a wearer can experience less than 65 percent of expected body burn when exposed to a sudden 4 second fire exposure by astm f1930 while maintaining a category 2 arc rating by astm f1959 and nfpa 70e.