| abstract |
The present invention relates to yarns, fabrics and garments suitable for use in arc and flame protection, which include aramid fibers and modacrylic fibers, which have less than 1.5% antimony and are preferably free of antimony. In one embodiment, the yarn, cloth and / or garment comprises 50 to 80 weights having a crystallinity of at least 20% based on the total weight of components (a), (b), (c) and (d) % Meta-aramid fibers, (b) 10-40 weight percent antimony-free acrylic fiber, (c) 5-20 weight percent para-aramid fibers, and (d) 1-3 weight percent antistatic fibers It's essentially done. In some embodiments, the garment made from the yarn maintains a Category 2 arc rating according to ASTM F1959 and NFPA 70E while the wearer is exposed to less than 65% expected body burn when exposed to four seconds of sudden fire exposure according to ASTM F1930. Provide thermal protection to experience |