对箱板纸中颜料染色及其参数控制的探讨

Research on Color Adjustment of Boxboard by Pigment and Its Parameter Control

研究发现纸张生产过程中颜料可以代替染料来进行染色,颜料具有低用量、好的遮盖率、良好的稳定性和低成本等优点。该文介绍了染料染色的缺点和颜料染色目前的研究状况,并探讨了植物纤维打浆度、AKD、接触时间和pH对颜料染色的影响。通过实验,打浆度可以对染色结果造成一定的影响。其色相指标L*、a*、b*值都有一定的变化规律。加入红色、黄色和橘黄色颜料后,纸张分别朝着偏红、偏黄和偏橘黄色方向发展。最佳打浆度都为44°SR。AKD增加颜料的留着。红色和黄色颜料的最佳接触时间为6min,而橘黄色颜料的最佳接触时间为4min。红色颜料最佳pH为5.5,黄色、橘黄色颜料最佳pH都为6。因此三者都适合在酸性条件下进行染色。

Tinting pigment can replace dyes to dye paper in paper making according to some research. It has the advantages of high efficiency, large coverage, good stability and low cost. In this paper, the disadvantages and research situation of using pigment to adjust color were introduced. The influences of the beating degree of cellulose fiber, AKD sizing, contact time and pH on the dyeing effect of tinting pigment were also investigated. It was found that beating influenced the dyeing effect. The best results was obtained at the beating degree of 44 ~SR. AKD could improved pigment retention. The optimal contact time for red and yellow pigments were 6 minutes while that for orange pigment was 4 minutes. With the increase of pH, the value of a＊ and b＊ improved first and then declined. The red pigment reached its maximum dyeing effect at pH 5.5, while the yellow pigment and orange pigment reached their maximum dyeing effect at pH 6. Therefore, the three pigments were suitable for paper dyeing under acidic conditions.