森林工程2025，Vol.41Issue(4)：732-741,10.DOI:10.7525/j.issn.1006-8023.2025.04.008
不同厚度中密度纤维板的孔隙分形特征研究
Study on the Fractal Characteristics of Pore Structures in Medium-Density Fiberboard of Different Thicknesses
摘要
Abstract
This study investigated the pore fractal characteristics of medium density fiberboard(MDF)of different thick-nesses.By combining high-pressure mercury intrusion porosimetry(MIP)and nitrogen(N2)adsorption experiments,the pore structure parameters such as pore volume,pore size,and pore size distribution were quantified.Utilizing the FHH(Frenkel-Halsey-Hill)and MIP fractal theoretical models in conjunction with experimental results,the fractal di-mensions of pores at different scales were calculated.The complexity of the pore structure was quantified through fractal models,revealing significant differences in the pore fractal characteristics of MDF of different thicknesses.The fractal dimensions calculated using the fractal models indicated that both the macro-pore fractal dimension(2.957-2.988)and the mesopore fractal dimension(2.602-2.851)increased significantly with increasing thickness(R2>0.90),suggesting that the pore structure complexity of thicker boards was higher.The influence of density(0.722-0.777 g/cm³)on the fractal dimension was relatively weak.Moreover,there was a close relationship between the fractal dimension and pore structure parameters.The macro-pore fractal dimension was positively correlated with the average pore size and porosity of the material,while the mesopore fractal dimension was negatively correlated with the average pore size and positively correlated with the specific surface area.This study reveals the pore fractal patterns dominated by thickness,providing a theoretical basis for optimizing the environmental performance of MDF through process improvement.关键词
MDF/孔隙/分形维数/高压压汞/N2吸附Key words
MDF/pore/fractal dimension/high-pressure mercury intrusion/nitrogen adsorption分类
轻工纺织引用本文复制引用
胡泽文,胡加澳,陈小枫,丁佳蓉,刘玉,朱晓冬..不同厚度中密度纤维板的孔隙分形特征研究[J].森林工程,2025,41(4):732-741,10.基金项目
国家自然科学基金项目(32201481). （32201481）
