摘要
Abstract
To address the issue of functional homogenization in nonwoven liquid-absorption prod-ucts,aromatic microcapsules were prepared using rosemary essential oil as the core material,hydroxypropyl-β-cyclodextrin as the wall material,and mannitol as an anti-caking agent.These microcapsules are anchored onto a dual-layer viscose/ES fiber nonwoven substrate,constructed via needle punching and hot-air bonding,through online powder scattering and hot-air melting ad-hesion technology.The influences of mannitol ratio,fiber blend ratio,needle punching frequency,hot-air temperature,and duration on the performance of the microcapsules,as well as the liquid absorption,strength,and liquid moisture management properties of the nonwoven material,are systematically investigated.Results show that when the mannitol content is 4%,the microcap-sules exhibit optimal dispersibility,a re-dissolved particle size of 7～12 μm,and significantly im-proved thermal stability.The composite material demonstrates the best overall performance when the viscose/ES fiber ratio is 8∶2,the needle punching frequency is 200 punches/min,the hot-air temperature is 135℃,and the duration is 120 s,achieving a liquid absorption capacity of 1 666.06%and a longitudinal strength of 143 N.This study provides a green technological path-way for developing nonwoven products with both aromatic and high liquid-absorption functions.关键词
微胶囊/非织造材料/吸液性能/热风黏合/喷雾干燥Key words
microcapsules/nonwoven materials/liquid absorption performance/hot air bonding/spray-drying分类
轻工纺织
