灰色羽绒的漂白技术

针对有色羽绒不易漂白的问题,对灰色羽绒进行选择性漂白.通过系统研究预处理(金属络合)、清洗、漂白等各道工艺,探索各阶段工艺因素对羽绒白度和蓬松度的影响,优化漂白工艺参数.经选择性氧化漂白和还原漂白联合处理后,灰色羽绒纤维白度由29%提高到68%,并保持良好的蓬松度.SEM观察和FT-IR分析表明,经过优化条件下的选择性...

Bleaching technology of grey down

To solve the bleaching problem of grey down, the selective bleaching process was applied. Based on the studies of pretreatment (metal complex), cleaning and bleaching, the factors affecting whiteness and bulkiness in each procedure were investigated and the bleaching parameters were optimized. After combination treatment of selective oxidation bleaching and reduction bleaching, the whiteness of grey down fibers increased from 29% to 68%, while keeping their good bulkiness. SEM and FT-IR analysis indicated that the treatment had little influence on the physical structure of grey down, though it led to some changes in the chemical structure on the surface of the fibers, mainly the oxidation of disulfide bond of cystine. The optimized bleaching technology had excellent bleaching effect which solved the contradictions between whiteness and tendering in the bleaching of grey down, and showed energy saving and consumption reduction.