基于火焰法碳纳米材料的玻璃钢界面强化机理研究

项目名称： 基于火焰法碳纳米材料的玻璃钢界面强化机理研究

项目编号： No.51209023

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 水利科学与海洋工程学科

项目作者： 廖灵敏

作者单位： 长江水利委员会长江科学院

项目金额： 25万元

中文摘要： 水工和海工结构用玻璃钢受复杂外应力作用时，内部玻纤/树脂界面易于产生剥离分裂导致材料脆性破坏，须改善其界面粘结性。不同于常规的以偶联剂处理玻纤表面的方法，前期工作中将一种具有独特表面特性的火焰法碳纳米材料包覆到玻纤表面以增强玻璃钢界面，界面粘结效能显著提升。目前此界面强化机理还不甚明了，限制了该方法的应用。本项目拟通过SEM、冲击和DMA测试等手段对不同火焰法碳纳米材料改性界面的玻璃钢的微观形貌、固化结构、力学性能和断口形貌进行表征测试以对比其界面强化效果；采用现代微观表征技术表征不同火焰法碳纳米材料的表面原子结构并建模，利用第一性原理等方法计算模拟并结合接触角测试评估其表面特性；将不同火焰法碳纳米材料的界面强化效果与其表面结构特性相关联，揭示火焰法碳纳米材料对玻璃钢的界面强化机理。本项目将为火焰法碳纳米材料增强玻璃钢界面以优化其综合力学性能，使玻璃钢更好地适应水工和海工要求提供理论依据。

中文关键词： 碳纳米材料；火焰法；玻璃钢；界面强化；机理

英文摘要： GFRP composites in the hydraulic and marine industry are prone to brittle fracture in the presence of complicated external forces, mainly in the form of delamination between the plies due to the weakening of the fiber/matrix interface. As a result, it is urgent to promote the fiber/matrix adhesion for GFRP. Different from the common used method that the surface treatment of glass fibers with variant coupling agents，a kind of flame-synthesized carbon nanomaterials possessing unique surface characteristics were coated on the surface of fibers for the interface enhancement of GFRP, which effectively improved the integrated mechanical properties in the previous work. However, its enhancing mechanism is still unclear, which limits the broader application of this new method for interface enhancement of GFRP. In the work, the microscopic morphologies, solidification microstrutures, mechanical properties and fracture behaviors of GFRP interfacial modified with different flame-synthesized carbon nanomaterials would be characterized and measured with scanning electron mocroscopy (SEM), impact test, Dynamic mechanical analysis (DMA) test, et al to compare their interface enhancement effects for GFRP. Meanwhile, the surface atomic structures of different flame-synthesized carbon nanomaterials would be characterized with mod

英文关键词： Carbon nanomaterials；Flame synthesis；Glass fiber reinforced polymer；Interface enhancement；Mechanism