【作者】 肖峰；

【导师】 郭智威； 刘爱学；

【作者基本信息】 武汉理工大学 ， 机械（专业学位）， 2024， 硕士

【摘要】 随着绿色环保理念的推广,水润滑轴承的应用正逐渐普及。为了保障水润滑轴承的高效稳定运行,开发具有优越摩擦学性能的新型复合材料尤为重要。纤维缠绕增强复合材料通过纤维缠绕技术可以实现复合材料性能的可靠提升,在复合材料领域有着广阔的发展前景。因此,开展纤维缠绕增强的水润滑轴承复合材料研究对提升轴承性能具有重要的实践意义。本文在设计、制造纤维缠绕设备的基础上,实现纤维缠绕增强复合材料的制备,并探究了纤维材质、缠绕张力对纤维缠绕增强复合材料摩擦学性能的影响规律,为水润滑轴承纤维缠绕增强复合材料的设计、应用提供数据支持。结合纤维缠绕增强复合材料的成型需求,设计并搭建了湿法纤维缠绕机,利用玻璃纤维(Glass Fiber,GF),将缠绕张力和角度分别设为4 N和65°,制备了GF缠绕增强复合材料,通过力学试验和摩擦学试验对比研究了水润滑条件下GF对复合材料性能的增强效果。结果表明,所制备的复合材料在弯曲强度上提升了2.18%,其压缩强度达到了纯环氧树脂(Epoxy resin,EP)的2.05倍。通过三组不同工况下的摩擦试验,发现平均摩擦系数均约降低了6%。与EP相比,复合材料的磨损量降低了16.2%。由此,纤维缠绕机的工作性能得以验证,能够实现纤维缠绕增强复合材料的制备。通过对比碳纤维(Carbon fiber,CF)、GF和玄武岩纤维(Basalt fiber,BF)缠绕增强复合材料的机械性能和摩擦学性能,讨论了纤维材质对纤维缠绕增强复合材料性能的影响。结果表明:用于纤维缠绕增强复合材料的纤维机械性能的提高会增加纤维支撑的稳定性,从而改善复合材料的摩擦磨损性能,其中CF缠绕增强的EP水润滑轴承复合材料表现出最佳的摩擦磨损性能。通过调整纤维缠绕机永磁阻尼器控制缠绕张力,制备了一系列不同缠绕张力的CF缠绕增强EP复合材料,并进行了力学试验和摩擦学试验。试验结果表明,适当的缠绕张力可以使得CF与EP基体有良好的结合,能够发挥增强作用,进而提升复合材料的摩擦学性能。张力过大会导致CF损伤,进而影响复合材料的整体性能。当缠绕张力为15 N时,摩擦学性能最优。更多还原

【Abstract】 As the concept of green environmental protection spreads,the application of water-lubricated bearings is gradually becoming widespread.To ensure the efficient and stable operation of water-lubricated bearings,it is particularly important to develop new composite materials with superior tribological performance.Filament winding reinforced composites can reliably enhance the performance of composites through filament winding technology,presenting a broad development prospect in the field of composite materials.Therefore,conducting research on filament winding reinforced water-lubricated bearing composites is of significant practical importance to improve bearing performance.This thesis,based on the design and manufacture of filament winding equipment,achieves the preparation of filament winding reinforced composites,and explores the effect of fiber material and winding tension on the tribological performance of filament winding reinforced composites,providing data support for the design and application of water-lubricated bearing filament winding reinforced composites.To meet the forming requirements of filament winding reinforced composites,a wet filament winding machine was designed and constructed.Utilizing glass fiber(GF),with the winding tension and angle set at 4 N and 65°respectively,GF wound reinforced composites were prepared.Through mechanical and tribological testing,the enhancement effect of GF on the performance of the composites under water-lubricated conditions was comparatively studied.The results showed that the prepared composite materials exhibited a 2.18%improvement in bending performance and their compression performance reached 2.05 times that of pure epoxy resin(EP).Through friction experiments under three different conditions,it was found that the average friction coefficient was reduced by approximately 5%.Compared to EP,the wear amount of the composite materials was reduced by 16.2%.Thus,the working performance of the filament winding machine was verified,enabling the preparation of filament wound reinforced composites.By comparing the mechanical and tribological properties of composites reinforced with carbon fiber(CF),glass fiber(GF),and basalt fiber(BF),the impact of fiber materials on the performance of filament wound reinforced composites was discussed.The results indicate that the improvement of the mechanical properties of the fibers used in the filament wound reinforced composites increases the stability supported by the fibers,thereby improving the tribological performance of the composites.Among them,the CF winding-reinforced EP composites for water-lubricated bearings exhibited the best friction and wear performance.By adjusting the permanent magnet damper of the filament winding machine to control the winding tension,a series of CF winding-reinforced EP composites with different winding tensions were prepared and subjected to mechanical and tribological tests.The results indicate that the appropriate winding tension can ensure good bonding between CF and the EP matrix,allowing the reinforcement to play an effective role and enhance the tribological performance of the composites.Excessive tension can cause serious damage to the CF,leading to a decline in the overall performance of the composites.When the winding tension is 15N,and the tribological performance is optimal.更多还原