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通过利用不同黏度的褐藻酸钠(SA)与聚酰胺多胺环氧氯丙烷(PAE)协同作用来提高纸张的抗张强度,得出了与PAE协同作用的SA的最佳黏度在350mPa·s附近,并通过SA与PAE的不同用量配比得出黏度为350mPa·s的SA与PAE协同作用的最佳配比为PAE:SA=3:2,此时纸张的湿抗张指数达到了43.3N·m·g-1,较空白纸页和单独加入0.75%的PAE所抄造纸页分别提高了43.3倍和2.5倍;然后通过扫描电子显微镜(SEM)对本实验所抄造的空白纸页、单独加入PAE纸页和加入PAE-SA二元体系纸页的微观结构进行了观察,结果表明,加入PAE-SA二元体系可在纸页纤维表面会形成明显的抗水膜,从而提高纸页的抗张强度;最后就浆料打浆度对PAE-SA二元体系的影响进行了探究。
By using different viscosity of sodium alginate (SA) and polyamide polyamine epichlorohydrin (PAE) synergistic effect to improve the tensile strength of the paper, obtained with PAE synergistic effect of the best viscosity of SA at 350mPa · s And the optimal ratio of SA and PAE with the viscosity of 350mPa · s is PAE: SA = 3: 2, and the wet tensile index of the paper reached 43.3 N · m · g-1, which was 43.3 times and 2.5 times higher than that of the blank paper and PAE added 0.75% respectively. Then, the blank paper copied in this experiment was analyzed by scanning electron microscope (SEM) The results showed that adding PAE-SA binary system could form obvious water-repellent film on the surface of paper fiber, thus improving the paper structure of paper Tensile strength; Finally, the pulp beating degree of PAE-SA binary system was explored.