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以三聚氯氰、牛磺酸为原料,通过亲核取代反应对光稳定剂2,2’,6,6’-四甲基哌啶胺和4,4’-二氨基二苯乙烯-2,2’-二磺酸类荧光增白剂进行水溶性改性,以表面施胶的形式用于抑制杨木化机浆纸张的返黄,通过紫外光加速老化实验考察了水溶性改性后光稳定剂、荧光增白剂以及复配作为返黄抑制剂对化机浆纸张的返黄抑制效果。结果表明:经过水溶性改性的受阻胺光稳定剂(HALS)和荧光增白剂(FBs)复配产物比单独使用它们的光稳定效果更好、性质更优,且复配质量比m(HALS):m(FBs)=5:1时,协同效应更好,能达到最佳的抑制返黄效果,更适合作光诱导高得率浆的返黄抑制剂。
Using cyanuric chloride and taurine as raw materials, the photostabilizers 2,2 ’, 6,6’-tetramethylpiperidinamine and 4,4’-diaminostilbene-2 , 2’-disulfonic acid optical brightener water-soluble modified surface sizing form used to inhibit the poplar machine pulp paper yellowing, accelerated aging test by ultraviolet light water-soluble modified light stability Agent, fluorescent whitening agent and compound as a yellowing inhibitor on the machine paper pulp yellow inhibitory effect. The results show that the light-stabilizing effect of HALS and FBs after water-soluble modification is better and the property is better than that of HALS and FBs. HALS): m (FBs) = 5: 1, the synergistic effect is better, the best yellowing inhibition effect is achieved, and the yellowing inhibitor is more suitable for light induced high yield pulp.