Hybrid Woven Nonwoven Composite for Protection.

摘要

There have been many studies on improving protection performance of military uniforms with various systems. Different levels of protection can be obtained for various applications. However, the main threshold in military systems is keeping comfort and protection level in a balance. The systems with highest protective level require heavy weight activated carbon layer or impermeable coatings which increase the heat stress and reduce comfort. Current efforts on military clothing are to optimize barrier properties without sacrificing comfort.;The purpose of this study is to improve the chemical-biological protection performance of current military combat fabric (NYCO) with use of low basis weight functional composite nanofibers. PA6 is chosen as the main polymer due to compatibility with NYCO (50% Nylon -- 50% Cotton) fabric. The effects of electrospinning parameters on PA6 nanofiber structure, filtration and air permeability of nanofiber web are investigated. For functionalization of PA6 nanofibers, various metal oxides (Al2O3, TiO 2, ZnO and Fe2O3) with different forms, particle sizes and concentrations are used. The effects of particle concentration and additives on distribution of nanoparticles in nanofibers are studied. Photocatalytic activities of functional composite nanofibers against acid orange dye and effect of particle size, concentration and type are addressed.;This study provides a contribution to the current literature on low fiber diameter nanofiber formation, in situ electrospun composite nanoparticle/nanofiber formation with uniform dispersion and no aggregation, and optimizing the composite fiber properties for improved photocatalytic activity.