过氧漂白影响因素的研究

报告了稳定剂、螯合剂和活化剂等添加剂以及过氧漂白的基本参数对漂白效果的影响 .通过实验证明 ,在过氧漂白中 ,稳定剂、漂白活化剂、螯合剂是必不可少的添加剂 .2 .5 %～ 5 %的硅酸钠、0 .2 5 %～ 1%的硫酸镁、1%～ 2 .5 %的柠檬酸、1.5 %～ 2 .5 %的 OOBS对于过氧化氢释放活性氧起到稳定或活化的作用 ,达到较好的漂白效果 .温度、时间、浓度可以互相补偿 .

金属离子对酸性过氧化氢漂白的影响

进行亚硫酸镁盐竹子/蔗渣浆的酸性H2O2漂白。结果表明,在实验条件下,H2SO4及EDTA的预处理能显著降低浆中过渡金属离子的含量,改善酸性H2O2漂白效果;在漂白过程中,添加适量的柠檬酸,对提高漂浆白度、粘度等有好处。

Ecological Costs Applied in the Bleaching of Cotton： A Study for an Optimized Process

The aim of this paper was to study three variables in hydrogen peroxide bleaching of cotton fabrics： the amount of hydrogen peroxide （H2O2）, peroxide stabilizer （Na2SiO3） and the process temperature. The factorial planning of two levels and three factors was done in order to obtain an optimized recipe for subsequent comparison with commons recipes used in industry. Were evaluated the brightness （DL）, energy consumption （dQ）, H2O2 residual （Rox）, processing time and ecological costs.

Tentative Research of Short Process of Jute Degumming and Bleaching

The feasibility of combination process of jute degumming and bleaching with alkali-hydrogen peroxide in one-step-one-bath was discussed. The combination process basically has the similar function as the traditional two-step-two-bath method. The factors such as hydrogen peroxide concentration, CBI concentration, sodium hydroxide concentration, treatment time and temperature were studied respectively, and then an orthogonal experiment was designed to study the interactions among the hydrogen peroxide concentration, CBI concentration, sodium hydroxide concentration. After the designed experiments, the optimum treatment conditions were obtained as follows: hydrogen peroxide of 12g/L, sodium hydroxide of 4g/L, CBI of 4g/L, JFC of 1g/L, treatment time of 60min and temperature of 75℃.