Cyanate Ester/Functionalized Silica Nanocomposite： Synthesis, Characterization and Properties  

作　　者：Jiapeng Li Qihui He Renfu Xu Baixing Hu 

机构地区：[1]MOE Key Laboratory of High Performance Polymer Materials' and Technology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China

出　　处：《Chinese Journal of Chemistry》2015年第11期1259-1268,共10页中国化学（英文版）

摘　　要：In this paper, silica nanoparticles with covalently grafted polymer chains were incorporated into bisphenol A dicyanate ester （BADCy） to prepare composites, which resulted in improvements in the mechanical and thermal properties. Fourier-transform infrared （FT-IR） spectroscopy, transmission electron microscopy （TEM） and thermogravimetric analysis （TGA） were employed to examine the surface functionalization of silica nanoparticles. The effects of functionalized SiO2 （F-SiO2） on the curing reactivity, mechanical and thermal properties of BADCy resin were investigated systematically. The curing reaction of the system was facilitated with the addition of F-SiO2. Meanwhile, compared with the neat resin, the incorporation of appropriate content of modified F-SiO2 can enhance the mechanical properties including impact, flexural strengths and fracture toughness KIC of BADCy resin. In addition, the thermal stability of BADCy/F-SiO2 nanoeomposites is also superior to that of pure BADCy resin.In this paper, silica nanoparticles with covalently grafted polymer chains were incorporated into bisphenol A dicyanate ester （BADCy） to prepare composites, which resulted in improvements in the mechanical and thermal properties. Fourier-transform infrared （FT-IR） spectroscopy, transmission electron microscopy （TEM） and thermogravimetric analysis （TGA） were employed to examine the surface functionalization of silica nanoparticles. The effects of functionalized SiO2 （F-SiO2） on the curing reactivity, mechanical and thermal properties of BADCy resin were investigated systematically. The curing reaction of the system was facilitated with the addition of F-SiO2. Meanwhile, compared with the neat resin, the incorporation of appropriate content of modified F-SiO2 can enhance the mechanical properties including impact, flexural strengths and fracture toughness KIC of BADCy resin. In addition, the thermal stability of BADCy/F-SiO2 nanoeomposites is also superior to that of pure BADCy resin.

关 键 词：NANOCOMPOSITES functionalized SiO2 mechanical properties thermal stability 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TP212.3[自动化与计算机技术—检测技术与自动化装置]