摘要
Abstract
The low temperature bleach activator LTB was applied in cotton fabric hydrogen peroxide bleaching. The influences of process conditions on bleaching effect were studied, and the fabric performance after bleaching was tested. The optimization process were 27.5% H2O2 10 g/L, NaOH 2 g/L, scouring enzyme A4 1.5 g/L, LTB 2 g/L, liquor ratio 1∶10, pretreating at 80 ℃ for 45 min. Compared with the conventional bleaching process, NOBS and commercial low temperature bleaching, LTB had certain activation on H2O2, and it could promote effective decomposition of H2O2, with high efficiency energy-saving effect. When H2O2/LTB constructed activation system applied to low temperature bleaching of cotton fabrics, cotton fabric whiteness was 75.1, capil ary effect was 8.5 cm/30 min and the fabric breaking strength was 96.8 N/cm, which could meet the requirements of subsequent dyeing and finishing process.关键词
节能/低温/活化剂/练漂/棉织物Key words
energy conservation/low temperature/activator/scouring and bleaching/cotton fabrics分类
轻工纺织
