稀土改性玄武岩纤维增强树脂基复合材料的界面强韧化机制与相关性能研究

项目名称： 稀土改性玄武岩纤维增强树脂基复合材料的界面强韧化机制与相关性能研究

项目编号： No.51203033

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 有机高分子材料学科

项目作者： 李翀

作者单位： 哈尔滨工程大学

项目金额： 25万元

中文摘要： 在理论分析和实验研究的基础上，本项目提出在玄武岩纤维/树脂基复合材料的界面结构中引入稀土元素，进而增加复合材料的界面强度与韧性，提高复合材料的整体性能。项目以玄武岩纤维/环氧复合材料和玄武岩纤维/聚氨酯复合材料作为载体，以La系和Ce系稀土溶剂作为改性溶剂，通过研究稀土元素对玄武岩纤维表面的作用行为和稀土元素对玄武岩纤维/树脂基复合材料界面结合性能的影响，建立"稀土元素-纤维表面结构-界面结合性能"之间的内在联系，阐明稀土元素在玄武岩纤维/树脂基复合材料界面结构中的强韧化机理和最佳含量机制。同时，本项目对稀土改性玄武岩纤维/树脂基复合材料的静态力学性能、高速旋转极限强度和疲劳特性进行了深入研究，探讨了高速旋转条件下复合材料的疲劳损伤机理，揭示了稀土元素在损伤失效过程中的作用。本项目的研究成果为玄武岩纤维/树脂基复合材料在高端领域的应用，尤其在高速储能飞轮领域的应用提供了科学依据与基本数据。

中文关键词： 复合材料；稀土改性；界面结构；玄武岩纤维；强韧化

英文摘要： On the basis of theoretical analysis and experimental study, this project proposed that rare earth was added in the interface of basalt fiber/resin matrix composites for increasing the strength and toughness of the interface and improving the properties of composites. In the project, basalt fiber/epoxy composite and basalt fiber/poly urethane composite will be chosen as research objects, and La solution and Ce solution will be chosen as modified solvents. Through studying the influences of rare earth elements on the surface of basalt fiber and on the interface bonding performance of basalt fiber/resin matrix composite, the relation "rare earth element- the surface structure of basalt fiber- the interface bonding performance" will be established, and it will be elaborated that the strengthening and toughening mechanism of rare earth elements and the optimum content mechanism of rare earth elements in the interface structure of basalt fiber/resin matrix composite. Meanwhile, in this project, through studying the static mechanical properties of composites and the high-speed rotating ultimate strength and fatigue performance of composites, it will be discussed that the fatigue damage mechanism of composites in the high-speed rotating condition, and it will be revealed that the influence of rare earth elements on the

英文关键词： composites materials；RE modification；interface structure；basalt fiber；strengtheing and toughening