碳纤维表面光滑且具有惰性,削弱了其与树脂的界面黏结,进而限制了碳织物/树脂复合材料的应用前景。基于界面工程技术,采用预埋晶种层的方式诱导ZnO微纳米阵列在碳纤维表面均匀生长,并通过改变晶种层溶度优化ZnO阵列的形貌和分布,以强化纤维/基体的界面,从而提升复合材料的力学强度和摩擦学性能。结果表明:通过对纤维表面形貌分析,晶种层浓度对ZnO微纳米阵列形貌和分布有较大的影响;当浓度为15mmol/L时,均匀且细化的ZnO阵列生长在碳纤维表面,使纤维的表面能大幅度提高,促进了树脂充分浸润,提高了力学强度;与原始复合材料相比,改性复合材料的磨损率降低了约35%,表明ZnO阵列的引入能够明显提高复合材料的耐磨性。
The application prospects of carbon fabrics (CFs)/resin composites have been limited due to the surface smooth and chemical inertia of carbon fibers,causing a weakened interface of fibers/matrix.From the view of interface engineering technology,the pre-embedded crystal seed layer was employed to induce the growth of ZnO arrays onto the surface of CFs,and the morphology and distribution of ZnO arrays were optimized via changing the solubility of the crystal seeds to strengthen the fiber/matrix interface,thereby improving the mechanical and tribological properties of the composites.The analysis of fiber surface morphology showed that the concentration of the crystal seed layer had an important effect on the morphology and distribution of the ZnO micro-nano arrays.When the concentration was 15mmol/L,the uniform and refined ZnO arrays grew onto the surface of CFs,which significantly increased the surface energy of the fibers,promoted the wetting of resin,and improved the mechanical strength.Compared with the pristine carbon fabrics composites,the wear rate of the modified composites was reduced by about 35%,indicating that the introduction of ZnO arrays could significantly improve the wear resistance of the composites.
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基金资助
陕西省教育厅专项科研计划项目(21JK0964);陕西省自然科学基础研究计划项目(2023-JC-QN-0138);咸阳师范学院专项科研基金项目(XSYK18005);咸阳师范学院“青年骨干教师”培养项目(XSYGG201607)
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