多因素对纸张孔隙结构和渗透性能的影响研究

Study on Pore Structure and Permeability of Paper Influenced by Multifactors

中文关键词:  纸张孔隙结构  渗透性能  透气度  打浆度  定量

Key Words:paper porous structure  permeability  air permeability  beating degree  basis weight

中文摘要:

      纸张的微观孔隙结构直接影响其性能。为实现对纸张结构的调控，本研究以棉浆、阔叶木浆和针叶木浆为原料，利用毛细管流动孔径分析仪研究纤维种类、打浆度和定量对纸张孔隙结构和渗透性能的影响。结果表明，随着打浆度和定量的增大，3种纤维原料抄造纸张的孔径都逐渐减小，孔径分布范围和峰值也随之往更小的孔径方向变化，渗透性能下降；相比于定量因素，打浆对纸张孔径及其分布影响更大，进而影响纸张的渗透性能。上述研究结果有助于实现对纸张结构的调控，推进多孔纸基材料的设计和开发。

Abstract:

      The microscopic porous structure of paper directly affects its properties. In this study， cotton， hardwood， and softwood pulps were used as raw materials and capillary flow porometer was employed to explore the effects of fiber materials， beating degree， and basis weight on porous structure and permeability of paper. The results showed that with the increase in beating degree and basis weight， the pore size of paper decreased gradually for all fiber materials； the distribution range and peak value of pore size shifted to smaller-size range and permeability also decreased. Compared with the influencing factor of basis weight， beating operation had a greater impact on the size and distribution of paper pore diameter， which further affected the permeability of paper. These results are beneficial to controlling the structure of paper and promoting the design and development of porous paper-based materials.