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http://dx.doi.org/10.5805/SFTI.2013.15.3.437

Physical Properties of Aramid and Aramid/Nylon Hybrid ATY for Protective Garments relative to ATY Nozzle Diameter  

Choi, La Hee (Dept. of Textile Engineering and Technology, Yeungnam University)
Kim, Hyun Ah (Korea Research Institute for Fashion Industry)
Kim, Seung Jin (Dept. of Textile Engineering and Technology, Yeungnam University)
Publication Information
Fashion & Textile Research Journal / v.15, no.3, 2013 , pp. 437-443 More about this Journal
Abstract
This paper investigates the physical properties of aramid and aramid/nylon hybrid air jet textured filaments for protective garments relative to ATY nozzle diameters. Three types of para-aramids(840d, 1,000d, 1,500d) and nylon(420d) filaments were prepared; in addition, 840d aramid/420d nylon and three kinds of aramid filaments were texturized with a variation of air jet nozzle diameters(0.6, 0.75, 1 and 1.2 mm) on the AIKI air jet texturing machine. The measured physical properties of 16 specimens are as follows. The linear densities of aramid and aramid/nylon hybrid ATY increased with a larger nozzle diameter. The tenacity and initial modulus of aramid and hybrid ATY linearly decreased with a larger nozzle diameter; in addition, the breaking strain increased with the nozzle diameter. The dry and wet thermal shrinkage of hybrid ATY increased with a larger nozzle diameter from 0.6 mm to 1 mm and then decreased at a nozzle diameter of 1.2 mm (which seems to be a critical diameter). The wet and dry thermal shrinkage of aramid/nylon hybrid ATY are influenced by the nylon part of the hybrid yarns because the wet and dry thermal shrinkages of aramid ATY are less than 0.2%. The instabilities of aramid and aramid/nylon hybrid ATY were not influenced by the air jet nozzle diameter; however, they increased with the linear density of ATY.
Keywords
ATY nozzle; hybrid ATY; aramid/nylon ATY; instability; protective garment;
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Times Cited By KSCI : 1  (Citation Analysis)
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