碳纤维/碳纳米管微结构与复合材料力学性能关联性研究

项目名称： 碳纤维/碳纳米管微结构与复合材料力学性能关联性研究

项目编号： No.51503051

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 梅蕾

作者单位： 哈尔滨工业大学

项目金额： 20万元

中文摘要： 随着碳纤维表面修饰和碳纳米管合成技术的研究日益成熟，一种结合碳纤维和碳纳米管两者特点的增强体结构——碳纤维接枝碳纳米管多尺度增强体应运而生并引起了广泛的关注。本项目在前期接枝技术研究的基础上，采取实验研究结合理论分析、模拟的方法，对该种增强体的微结构控制的影响因素进行深入研究，并揭示不同的微结构对复合材料整体力学性能的影响规律。首先通过对碳纤维表面官能团含量的控制、树枝状大分子界面层的密度控制、碳纳米管修饰方法的控制以及催化剂用量的控制，研究各个因素对增强体结构的影响规律，揭示不同微结构的增强体的生成机制和控制参数；其次对增强体的微结构进行形貌和性能表征，给出碳纤维和碳纳米管之间的结合强度和密度的测量方法；最后研究增强体微结构对树脂基复合材料的力学性能的影响规律。本项目得到复合材料性能与增强体形貌参数的关联性，给出工艺优化参数，为增强体的制备控制和实际应用提供直接的理论指导。

中文关键词： 碳纤维碳/纳米管增强体；力学性能；关联性

英文摘要： With the development of carbon fiber surface modification and carbon nanotube synthesis technology, grafting carbon nanotubes (CNTs) onto the CFs to design a CNT/CF multi-scale reinforcement (MSR) has become a hot spot in recent years and attracted more and more attention.Based on the early research of grafting technology,using the way of simularity analog test combining with theoretical analysis, throughresearch and comparision,we studied the control influence factors of the eniforcement microstructure,and revealed the influence law of composite mechnical properties affected by the different microstructures. Firstly, we will control the functional groups on the carbon fiber surface, the density of dendrimers interface layer, carbon nanotube modified methods and the catalyst amount, and study the various factors on the effect of CNT/CF structure, reveal different micro structure reinforcement mechanism and control parameter; secondly we will character the morphology and properties of the reinforcement, and give the measurement method of combination strength between CF and CNT grafted; finally we research properties of law between the microstructure and composites mechanical properties. In this project, we will get the correlation between the properties of the composite material and the parameters of the shape and profile, and give the optimized parameters.All these will provide a theoretical guidance to the reinforcement preparation control and practical application.

英文关键词： Carbon fiber / carbon nanotube reforcement;Mechanical Properties;Association