基于灰色关联分析法探究再生纤维对再生纸张机械性能的影响

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关键词：再生纤维；再生纸张；机械强度；灰关联分析中图分类号：TS724 文献标识码：A DOI：10. 11980/j. issn. 0254-508X. 2025. 05. 011

Analysis of the Influence of Recycled Fibers on the Mechanical Properties of Recycled Paper Based on Grey Relational Analysis

CHEN Li1 SHEN Wenhao1，* XIANG Shulin2 LI Hao2，* JIANG Wei2 （1. State Key Lab of Pulp & Paper Engineering，South China University of Technology，Guangzhou，Guangdong Province，510640； 2. Guangzhou Customs Technology Center，Guangzhou，Guangdong Province，510623） （*E-mail：ppwhshen@scut. edu. cn；haoyilee@126. com）

Abstract：This paper conducted three recycling processes for US old corrugated container（OCC） 12# and 13# to investigate the variations in the properties of recycled fibers and the mechanical strength of recycled paper as well as the correlation between them. The results showed that US OCC 12# recycled fibers were thicker and longer than US OCC 13# ，with higher proportion of fine fibers，and more extensive damage. After three recycling cycles，the fiber length-weighted average of US OCC 12# and US OCC 13# recycled fibers decreased by 10. 8% and 15. 7%，respective‐ ly，while their splitting length ratio increased by 11.2% and 2.3% ，respectively. Fiber twisting and bending decreased，whereas fiber breakage increased. The fine fibers content of US OCC 13# recycled fibers progressively decreased，while that of US OCC 12# recycled fibers initially in‐ creased and then declined. Following three recycling processes，both recycled paper exhibited reductions in tensile index（ 12# ： 21.4% ， 13# ： 10.7% ）and burst index（ 12# ： 10.2% ， 13# ： 2.6% ），while their folding endurance increased by 25.6% and 3.2% ，respectively. The tear in‐ dex of US OCC 12# recycled paper increased，whereas that of US OCC 13# recycled paper decreased. Overall，the mechanical strength of US OCC 12# recycled paper was generally better than that of US OCC 13# . Grey relational analysis showed that the proportions of short fibers，fine fi‐ bers，and twisted fibers were the key factors affecting paper mechanical strength，primarily acting on fiber bonding interactions.

Key words： recycled fibers；recycled paper；mechanical strength； grey relational analysis

废纸是一种重要的造纸原料，利用废纸造纸具有多种优势：如减少林业资源的消耗，与我国的环境政策相适应等[1]；利用废纸造纸，无需蒸煮，污染少；纸企所需的投资较少，生产耗能低，化学品用量小[2]。（剩余12263字）