聚丙烯酸酯对植物纤维纸基透水材料性能的影响

Effect of Polyacrylate on the Properties of Paper-based Permeable Materials

中文关键词:  纸基透水材料  疏水调节  聚丙烯酸酯  透水速率

Key Words:paper-based permeable material  hydrophobic regulation  polyacrylate  water permeation rate

中文摘要:

      以旧瓦楞纸箱为纸基透水材料的纤维原料来源，浆内添加聚丙烯酸酯疏水调节剂，研究疏水调节剂对纸基透水材料力学性能以及透水性能的影响，并根据Washburn方程分析了疏水调节剂影响纸基材料透水性能的相关机理。结果表明，适当添加疏水调节剂不仅可提高纸基材料的强度，同时可明显降低纸基材料的透水速率；疏水调节剂可在纤维表面和纤维之间形成膜状连接，随着疏水调节剂用量增加，纸基透水材料的平均孔径和孔隙率降低，疏水性能提高。此外，研究还发现，材料的平均孔径降低及疏水性能增强是降低纸基透水材料透水速率的主要原因。

Abstract:

      The effects of polyacrylate added to the pulp as hydrophobic regulator on the mechanical properties and permeability of paper-based permeable materials were studied by using waste corrugated box as fiber material. The mechanism of hydrophobic regulator affecting the water permeability was analyzed according to the Washburn equation. The results showed that the appropriate additive amount of hydrophobic regulator can not only enhance the strength of paper-based permeable materials， but also reduce its water permeability. The hydrophobic regulator formed membranous connection on the fiber surface and between the fibers. With the increase in the amount of hydrophobic regulator added， the average pore size and porosity of paper-based permeable materials decrease while the hydrophobic performance increased. Moreover， it was found that the decrease of the average pore size and the enhancement of hydrophobic properties were the main reasons for the decrease of the water permeation rate of paper-based permeable materials.