ZnO纳米棒/碳布多尺度增强酚醛树脂复合材料的制备与性能研究

Preparation and properties of ZnO nanorods/carbon fabricmulti-scale reinforced phenolic resin composites

采用新颖的水热电泳法在碳布表面生长ZnO纳米棒,制备出ZnO纳米棒/碳布多尺度增强体,与传统水热法相比,有效地缩短了ZnO纳米棒的生长时间。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、傅里叶变换红外光谱(FTIR)对ZnO纳米棒/碳布多尺度增强体的结构特征、微观形貌进行表征。探索了不同电泳时间(15、30、45、60 min)对碳布增强复合材料的湿式摩擦性能和拉伸性能的影响规律。结果表明,ZnO纳米棒/碳布多尺度增强体有效提高了复合材料的摩擦磨损性能和拉伸性能,归因于多尺度增强体与树脂基体之间形成良好的界面结合。当电泳30 min时,复合材料表现出最高且稳定的摩擦系数,与原始碳布复合材料相比磨损率降低了55.40%。复合材料的拉伸强度为133.74 MPa,与原始复合材料相比提高了30.10%。因此,水热电泳法在制备碳布多尺度增强的复合材料方面具有广阔的应用前景。

Novel hydrothermal electrophoresis was used to grow ZnO nanorods on the surface of carbon fabric to prepare ZnO nanorods/carbon fabric multi-scale reinforcement,which effectively shortened the growth time compared with traditional hydrothermal method.X-ray diffraction(XRD),scanning electron microscope(SEM),and Fourier transform infrared spectroscopy(FTIR)were used to characterize the structural characteristics and micro-morphology of ZnO nanorods/carbon fabric multi-scale reinforcements.Effects of different electrophoresis times(15 min,30 min,45 min,60 min)on wet friction properties and tensile properties of carbon fiber composites were explored.The results show that the preparation of ZnO nanorods/carbon fabric multi-scale reinforcements effectively improves the friction properties and tensile properties of composites,which are attributed to strong interfacial bonding between multi-scale reinforcements and resin matrix.When electrophoresis for 30 minutes,the composite shows the highest and stable friction coefficient,and wear rate is reduced by 55.40%compared with original carbon fiber composite.Tensile strength of composite is 133.74 MPa,which is 30.10%higher than that of original composite.Therefore,hydrothermal electrophoresis has broad application prospects in preparation of carbon fabric multi-scale reinforced composite materials.