海带液与 PVA 组合施胶提高纸张强度技术的研究

利用海带高强度的特性,研究了利用海带提高纸张强度的方法。以瓦楞芯纸作为研究对象,制备了海带液与PVA组合施胶剂,并对纸张进行表面施胶,确定了最佳施胶参数:海带液的质量浓度为10 g/L,PVA质量浓度为100 g/L,海带液与PVA溶液体积比例为3∶1,施胶量为5.0 g/m2,沿纸张纤维方向对瓦楞芯纸进行双面施胶。在此参数条件下,瓦楞芯纸抗张强度增加5.0%,伸长率增加5.4%;表面摩擦系数明显减小,静摩擦系数减小20%。经过热老化处理,施胶瓦楞芯纸的抗张强度降低1.6%,低于施胶前的4.6%。

Research of Paper Strengthening Technology Based on Kelp/ PVA Surface Sizing

In order to improve mechanical strength of corrugated paper, reduce its basic weight, and enhance its mechanical property, kelp/ PVA combination sizing method was studied. Kelp/ PVA combination sizing agent was prepared and corrugated paper was taken as research object to determine the best parameters. The result showed that the best parameters were: kelp density 10 g / L, PVA concentration 100 g / L, kelp and PVA volume ratio 3 : 1, sizing weight 5. 0 g / m2, and double sizing along paper fiber direction. It was found that while the best parameters were chosen, the tensile strength increased by 5. 0% , elongation increased by 5. 4% ; surface frictional coefficient was obviously reduced and static friction coefficient reduced by 20% . After thermal aging treatment, tensile strength of sizing corrugated core paper reduced by 1. 6% , less than 4. 6% of that compared paper.