纤维增强环氧树脂复合材料抗固体颗粒流冲蚀磨损研究进展

在生产生活中,固体颗粒流冲蚀磨损会造成经济损失,并且存在安全隐患。环氧树脂复合材料具有较好的强度和耐冲蚀性能,被广泛地应用于颗粒流冲蚀磨损工况下。为进一步提升环氧树脂的耐冲蚀性能,通常通过填料来改性环氧树脂,其中纤维增强环氧树脂表现出优异的耐固体颗粒流冲蚀性能,使得环氧树脂复合材料的应用更加广阔。根据纤维的种类可以将其分为无机纤维(玻璃纤维或碳纤维)、自然纤维及混和纤维增强环氧树脂复合材料。综述了纤维增强环氧树脂复合材料抗固体颗粒流冲蚀性能的研究现状,讨论了不同的纤维增强复合材料表现出的冲蚀行为(塑性、脆性、半塑性、半脆性),重点分析和对比了不同纤维填料特性(纤维类型、纤维含量、纤维取向)增强环氧树脂复合材料在不同工况条件(冲蚀角度、冲蚀速度、磨粒特性)下的耐冲蚀磨损性能,阐明了不同纤维增强环氧复合材料的冲蚀模式和抗冲蚀机理,指出其现存的问题并展望其发展方向和前景。

Erosive Wear Resistance of Fiber-reinforced Epoxy Resin to Solid Particle Flow

In daily production and life, erosive wear of solid particle flow will not only cause economic losses, but also have a security risk. Epoxy resin composite is widely used in erosive wear working conditions of particle flow due to excellent strength and erosion resistance. In order to further improve the erosion resistance of epoxy resin, fillers are usually used to modify epoxy resin. Fiber-reinforced epoxy resin exhibits excellent erosion resistance to solid particles, which facilitates broader application of epoxy resin composites. Fibers can be classified into inorganic fiber (fiber glass or carbon fiber), natural fiber and mixed fiber-reinforced epoxy resin composite. Research progress of erosion resistance of fiber-reinforced epoxy composites to solid particle flow was reviewed. Erosion behavior (plastic, brittle, semi-plastic and semi-brittle) of different fiber-reinforced composites was discussed. Characteristics of different fiber fillers (fiber category, fiber content, fiber orientation) and erosive wear resistance of reinforced epoxy resin composites under different working conditions (erosion angle, erosion rate, abrasive properties) were analyzed and compared emphatically. Erosion mode and anti-erosion mechanism of different fiber-reinforced epoxy composites were expounded, and existing problems of fiber-reinforced epoxy composites were pointed out. Finally, development directions and prospects of fiber-reinforced epoxy composites are also proposed.