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研究海藻酸钠(SA)作为阴离子助剂与阳离子聚合电解质阳离子淀粉(CS)共用组成二元增强体系对针阔叶木为1:4的浆料所抄纸张的增强效果。结果表明:CS/SA二元增强体系对纸张的增强效果比单一加入阳离子聚合电解质CS的增强效果好,该二元体系对纸张物理强度增加的最大值,比不添加增强剂时所抄造纸张的伸长率、抗张指数、撕裂指数和耐折度分别提高了93.3%,28.2%,15.4%和122%,比单一加入CS时纸张所能达到的最佳伸长率、抗张强度和耐折度分别提高了7.4%,12.0%和23%,而对撕裂强度提高不大。CS/SA二元增强体系较单独使用CS时的添加量小,有利于保护环境。阴离子助剂SA可通过提高浆料的保水值来提高浆料纤维的润胀性能,减少打浆能耗。
The effect of sodium alginate (SA) as cationic additive and cationic polyelectrolyte cationic starch (CS) on the paper reinforcing effect of binary reinforcement system on paper with 1: 4 softwood and hardwood was studied. The results show that the enhancement effect of CS / SA binary system on paper is better than that of CS alone. The maximum value of physical strength of paper in this binary system is higher than that of paper without reinforcing agent Elongation, tensile index, tear index and endurance increased by 93.3%, 28.2%, 15.4% and 122%, respectively, compared with the single addition of CS paper can achieve the best elongation, tensile strength and The folding endurance increased by 7.4%, 12.0% and 23% respectively, while the tear strength did not increase much. The CS / SA binary enhancement system has a smaller addition amount when used alone than CS, which is good for the protection of the environment. Anionic adjuvant SA can improve the swelling property of the pulp fiber by increasing the water retention of the pulp and reduce the energy consumption of beating.