木材科学与技术2025，Vol.39Issue(4)：68-77,10.DOI:10.12326/j.2096-9694.2025027
缝纫工艺与铺层构型对竹篾复合材料力学性能的影响
Effects of Stitching Technique and Lay-Up Configuration on Mechanical Properties of Bamboo Strip Composites
摘要
Abstract
Bamboo strip composites were fabricated using vacuum infusion process(VIP),with two-dimensional woven fabrics prepared by stitching technique as reinforcements.The effects of stitch spacing and layup configuration(symmetrical and staggered forming)on mechanical properties were investigated.Results showed that at 8 cm stitch spacing,unidirectional composites in the 0° direction exhibited increased tensile,flexural,and impact strengths by 7.6％,5.6％,and 15.3％,respectively,compared to non-stitched samples.Furthermore,the staggered distribution of stitching threads across layers effectively mitigated stress concentration.However,excessively small stitch spacing causes damages in bamboo strips and resin-rich zones,reducing mechanical properties in the 0° direction.Furthermore,layup configuration significantly influences mechanical performance.Tensile properties improve with increasing concentration of unidirectional fiber layers,and the[90/0/0]s configuration exhibits optimal performance in 0° direction,with tensile strength and modulus reaching 183 MPa and 20.4 GPa,respectively.Flexural properties are governed by surface layer orientation,with the[0/0/90]s configuration showing maximum flexural strength(320.4 MPa)and modulus(17.1 GPa)in 0° direction,along with superior deformation resistance.The[90/0/0]s configuration demonstrates optimal impact strength(91.4 kJ/m2)in 0° direction,attributed to the continuous distribution of 0° bamboo strip that effectively mitigates stress concentration.Various layup configuration effectively affect the mechanical properties of bamboo strip composites.This study provides design basis for the engineering application of bamboo-strip composites through the optimization of both process and structure.关键词
竹篾复合材料/真空灌注工艺/力学性能/缝纫行距/铺层构型Key words
bamboo strips composites/vacuum infusion process/mechanical properties/stitch row spacing/lay-up configuration分类
建筑与水利引用本文复制引用
罗怡田,李国鑫,郝笑龙,孙理超,欧荣贤,樊奇,王清文..缝纫工艺与铺层构型对竹篾复合材料力学性能的影响[J].木材科学与技术,2025,39(4):68-77,10.基金项目
广州市重点研发计划项目"农林废弃物联产轻质高强复合材料与功能助剂技术开发与应用"(2024B03J1380) （2024B03J1380）
国家自然科学基金项目"烷基酚-马来酸酐络合物对木质素高效溶解与抗氧化增效机理"(52103110). （52103110）
