木材科学与技术2026，Vol.40Issue(1)：82-89,8.DOI:10.12326/j.2096-9694.2025101
单板孔洞修补方式对胶合板力学性能的影响
Effects of Veneer Hole Repair Methods on Mechanical Properties of Plywood
摘要
Abstract
To investigate the effects of veneer hole-repair methods on the mechanical properties of plywood,rotary-cut Eucalyptus veneers with circular holes were used as material.Three repair methods,namely veneer patch,calcium hydroxide-based putty and wood-mixed putty,were applied to the holes before plywood manufacture.A non-contact full-field strain measurement system(digital image correlation,DIC)was used to analyze strain transfer during the bonding strength test.The results showed that pronounced local strain concentration occurred around unrepaired holes,disrupting the strain-transfer path.Compared with the control group without holes,the bonding strength,modulus of rupture(MOR),and modulus of elasticity(MOE)of the group with holes unrepaired decreased by 32.92%,18.78%,and 10.65%respectively.Plywood prepared from veneers repaired with calcium hydroxide-based putty(Group CP)and wood-mixed putty(Group WP)exhibited similar strain-evolution patterns during the bonding strength test.These repair materials effectively filled the holes and improved stress transfer.Compared with the unrepaired group,the bonding strength increased by 43.52%and 39.81%,respectively,while the MOR and MOE increased by 18.62%and 10.96%for Group CP and by 14.72%and 7.20%for Group WP,respectively.Although veneer patch repair improved the mechanical properties of plywood to some extent,gaps remained at the hole edges,resulting in insufficient bonding with the veneer substrate and a limited repair effect.Overall,the two putty-based repair methods showed better performance in improving the mechanical properties of plywood,providing a useful reference for the repair of veneer hole defects in plywood production.关键词
胶合板/单板孔洞修补/补片/腻子/力学性能Key words
plywood/veneer hole repair/veneer patch/putty/mechanical properties分类
轻工纺织引用本文复制引用
刘晓玲,禤示青,潘礼成,邱方亮,李匀曦,陈松武..单板孔洞修补方式对胶合板力学性能的影响[J].木材科学与技术,2026,40(1):82-89,8.基金项目
"十四五"国家重点研发计划项目"基于数字化协同的林木产品智能制造关键技术"(2023YFD2201500) （2023YFD2201500）
广西科技重大专项"抗划超韧浸渍胶膜纸界面强化关键技术研发及应用"(AA23062010). （AA23062010）
