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道路施工技术与装备教育部重点实验室,长安大学工程机械学院,西安 710064
Received:28 August 2025,
Revised:2025-10-24,
Accepted:29 October 2025,
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MA Yuqin, YAO Yinshu, LV Jinshu, et al. Study on Bending Properties of Graphene Oxide-Modified Woven Carbon Fiber Composites[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2025.
为了提高编织碳纤维复合材料的力学性能及其在实际工程中的应用,提出通过引进氧化石墨烯(GO)并调整其质量分数来优化复合材料力学性能。采用真空浸渗热压工艺制备GO质量分数为0.0%~0.5%的编织碳纤维复合材料,对其进行三点弯曲试验并借助扫描电子显微镜表征微观断口形貌;同时构建代表性体积单元模型,导入仿真软件中进行三点弯曲仿真分析。结果表明:随着GO质量分数从0.0%增至0.5%,材料极限弯曲载荷从150 N提升至292 N,增幅近95%;弯曲强度和模量在其质量分数为0.5%时达最优,分别为164.71 MPa和9.97 GPa,较未添加GO的样品分别提升93.02%和49.47%。试验与仿真结果变化趋势一致且吻合良好,说明GO的添加对碳纤维复合材料微观组织和力学性能影响显著,且在其质量分数为0.5%时作用最突出。研究为高性能碳纤维复合材料的设计与制备提供了数据支撑和理论参考。
To improve the mechanical properties of woven carbon fiber composites and their application in practical engineering
it was proposed to optimize the mechanical properties of the composites by introducing graphene oxide (GO) and adjusting its mass fraction. Woven carbon fiber composites with GO mass fractions ranging from 0.0% to 0.5% were fabricated via vacuum impregnation hot pressing system. Three-point bending tests were conducted on the composites
and the microfracture morphology was characterized using a scanning electron microscope. Meanwhile
a representative volume element model was established and imported into simulation software for three-point bending simulation analysis.The results indicated that as the GO mass fraction increased from 0.0% to 0.5%
the ultimate bending load of the material increased from 150 N to 292 N
with an increase of nearly 95%. When the GO mass fraction was 0.5%
the bending strength and modulus reached the optimal values
which were 164.71 MPa and 9.97 GPa
respectively—representing increases of 93.02% and 49.47% compared with the samples without GO addition. The variation trends of the experimental and simulation results were consistent and in good agreement
which indicated that the addition of GO had a significant impact on the microstructure and mechanical properties of woven carbon fiber composites
and the most prominent effect was observed when the GO mass fraction was 0.5%. This study provides data support and theoretical reference for the design and preparation of high-performance woven carbon fiber composites.
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