纳米二氧化硅杂化粒子的结构设计及可控合成  

Structure Design and Controllable Synthesis of Hybrid Nano-SiO_2 Grafted to Carbon Fiber

作　　者：王慧[1] 周晓东[1] 林群芳[1] 郭兵兵[1] 赵婧婧[1] 邓双辉[1] 蔡伦[1] 

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海200237

出　　处：《工程塑料应用》2013年第6期5-9,共5页Engineering Plastics Application

基　　金：国家自然科学基金资助项目(51073055)

摘　　要：采用分步原子转移自由基聚合(ATRP)法合成接枝了聚丙烯酸羟乙酯(PHEA)和聚苯乙烯(PS)链段的纳米SiO2杂化粒子,PHEA具有丰富的活性羟基官能团,可以与碳纤维形成化学键结合,PHEA和PS可分别与不同性质的基体形成良好的缠结和扩散,实现碳纤维与不同性质基体自适应构建强相互作用,改善界面粘结性能。用元素分析、傅立叶变换红外光谱、动态热机械分析、热重分析等手段对合成的纳米SiO2杂化粒子进行表征,确保合成的目标产物与设计的分子结构相吻合。Nano-SiO2 hybrid particles segment with grafted 2-phenoxy ethyl acrylate（PHEA） and polystyrene（PS） were sysnthesised using step by step atom transfer radical polymerization（ATRP） method. PHEA had active hydroxyl group of rich, and it could combine with carbon fiber to form a chemical bond, PHEA and PS could form a good entanglement and diffusion and matrix of different properties of the matrix, to realize adaptive fiber with different properties to construct the strong interaction, to improve the interfacial bond strength. The nano-SiO2 hybrid particles was characterized by the element analysis, Fourier transform infrared spectroscopy, dynamic mechanical thermal analysis, thermogravimetric analysis and other means which ensured that the molecular structure of the target product could match with molecular structure of the design.

关 键 词：碳纤维 纳米SIO2 表面处理 原子转移自由基聚合 自适应界面 

分 类 号：TB332[一般工业技术—材料科学与工程]