【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。更多还原

【Abstract】 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.更多还原