具有柔软作用的阳离子双酰胺类施胶剂的制备及应用

Preparation and Application of Cationic Diamide Sizing Agent with Softening Function

叙述了一种具有柔软作用的阳离子双酰胺类施胶剂的制备及应用,讨论了多种因素对施胶度及柔软性的影响。牛油和二乙烯三胺(DETA)反应合成一种施胶剂中间体,用硫酸二甲酯将中间体季铵化,得到具有柔软作用的阳离子双酰胺类施胶剂,改变硫酸二甲酯的用量,得到一系列不同阳离子度的施胶剂。以木浆作应用实验,得出施胶剂应用的最佳条件:阳离子度0.3,施胶剂用量0.75%,Al2(SO4)3用量0.5%,熟化时间30 min;在此条件下施胶,纸张的施胶度为34 s,柔软度为0.689 mN(空白样为1.098 mN)。

Tiffs paper deals with the preparation and application of a cationic diamide sizing agent with softening function and discusses some factors affecting the sizing degree and softness. The sizing agent intermediate prepared by butter and Diethylenetriamine（DEIA） was reacted with dimethyl sulfate to produce a kind of quaternary, ammonium salt. Various cationic degree sizing agent could be prepared by changing the dosage of dimethyl sulfate. The performance of the sizing agent was tested in the wood pulp. According to the application results, the optimum applied conditions are as follows： cationic degree 0.3, dosage of sizing agent 0.75%, dosage of aluminium sulfate 0,5%, aging time 30 rain. In the optimum condition, the sizing degree of the paper is 34s and the softness of the paper is 0.689 mN （the softness of the control sample is 1.098 raN）.