PA-钠水玻璃复合表面施胶剂的应用

Application of PA & Sodium Silicate in Surface Sizing

中文关键词:  钠水玻璃  瓦楞原纸  表面施胶

Key Words:sodium silicate  corrugating paper  surface sizing

中文摘要:

      以无机盐固化剂PA和钠水玻璃为原料，制备了PA-钠水玻璃复合表面施胶剂，并对瓦楞原纸进行表面施胶处理。讨论了该复合表面施胶剂对瓦楞原纸环压强度、耐破度及抗水性能的影响,并分析了施胶后纸张的表面微观结构。与传统表面施胶剂相比,该复合表面施胶剂固含量高、黏度低,易于控制涂布量,涂层挺硬。将其应用于瓦楞原纸表面处理后,在双面施胶量9 g/m²时，纸张耐破指数比原纸增加了35%,环压指数是原纸的3.2倍。

Abstract:

      Sodium silicate was solidified with PA and was coated on corrugating paper as a surface sizing agent to improve ring crush and burst strength of corrugating paper. The effect of the compound sizing agent on the main strength indexes of the paper was studied. The water resistance of the sized corrugating paper was characterized by Cobb value and the mechanism of surface water-resisting property was analyzed. Compared with conventional surface sizing agents, the compound sizing agent which has a higher solid content, lower viscosity, coating content is easily controlled and coated paper has higher stiffness. The results indicated that burst index and ring crush of the coated corrugating paper was increased by 35% and 2.2 times, respectively．