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首页> 外文期刊>Journal of Materials Science >Preparation and characterization of EP/SiO2 hybrid materials containing PEG flexible chain
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Preparation and characterization of EP/SiO2 hybrid materials containing PEG flexible chain

机译：含PEG柔性链的EP / SiO 2 杂化材料的制备与表征

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摘要

EP/SiO2 hybrid materials, which contained flexible chain, were prepared by epoxy resin (EP) and polyethylene glycol (PEG)-grafted polysilicic acid (PSA), which was obtained by endcapping polyethylene glycol-1000 with toluene 2,4-diisocyanate (TDI), followed by a reaction with polysilicic acid. The formation of hybrid materials was confirmed by a wide-angle X-ray diffraction (WAXD) and atomic force microscopy (AFM) analysis. Results showed that the EP/SiO2 hybrid particles were nanosized and the average size was about 20–50 nm. The mechanical properties, dynamic mechanical properties, and thermal properties were evaluated and compared with the corresponding matrix. The improvement in impact properties in hybrid materials was explained in terms of the impact fracture surface analysis by scanning electron microscope (SEM).
机译：通过环氧树脂（EP）和聚乙二醇（PEG）接枝的聚硅酸（PSA）制备了包含柔性链的EP / SiO 2 杂化材料。用甲苯2,4-二异氰酸酯（TDI），然后与聚硅酸反应。通过广角X射线衍射（WAXD）和原子力显微镜（AFM）分析确认了杂化材料的形成。结果表明，EP / SiO 2 杂化颗粒为纳米级，平均粒径约为20–50 nm。评估机械性能，动态机械性能和热性能，并将其与相应的基质进行比较。通过扫描电子显微镜（SEM）的冲击断裂表面分析，解释了混合材料中冲击性能的改善。

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