甲脒亚磺酸用于麦草Soda-AQ浆漂白的研究

对甲脒亚磷酸（ＦＡＳ）用于麦草Ｓｏｄａ－ＡＱ浆漂白的可能性进行了研究，重点考察了麦草Ｓｏｄａ－ＡＱ浆过氧化氢（Ｐ）和甲脒亚磺酸（Ａ）两段漂白中的几个过程变量（Ｈ２Ｏ２和ＦＡＳ用量、温度、时间）对漂白的影响，找出了较佳的ＰＦ漂白工艺条件。结果表明，Ｐ段Ｈ２Ｑ用量２％～３％（对绝干浆）、Ｆ段ＦＡＳ用量０．５％（对绝干浆）、温度７０℃、时间３（）ｎｄ为较佳的漂白工艺条件。研究中发现，Ｌ＊与白度呈线性正相关。ａ＊与Ｌ＊呈线性负相关，而ｂ＊与Ｌ＊之间无明确的相关性。

Study on the Bleaching of Wheatstraw Soda-AQ Pulp with Formamidnesulphinic Acid

The possibility of the bleaching of wheatstraw Soda-AQ pulp withformamidnesuphinic acid (FAS) was studied. The influences of some process variables(H2O2 and FAS charge, temperature, time) on the bleaching of wheatstraw Soda-AQ pulp with hydrogen peroxide(P) and formamidnesulphinic acid (F) were investigated,and the suitable bleaching process conditions were found. The results showed that H202 charge 2 %～3%(based on o.d.pulp) in P stage, FAS charge 0.5 % ( based on o. d. pulp), temperature 70℃, time 30 minutes in F stage are the suitable process conditions. L* has linear postitive correlation with brightness, a* has linear negative correlation with L* ,and b* has no clear correlation with L*