材料科学
环氧树脂
石墨烯
复合材料
氧化物
紫外线
表面改性
化学工程
纳米技术
冶金
光电子学
工程类
作者
Bin Du,Nanqing Chen,Guodong Zhang,Yun Chen,Bin Gao,Liqing Liu,Yushun Zhao
标识
DOI:10.1016/j.compscitech.2024.110655
摘要
Fluorinated graphene oxide@CeO2 (FGO@CeO2) was synthesized using an in-situ growth method and incorporated as a filler into epoxy resins to improve their UV aging resistance. On UV irradiation, it facilitated the surface enrichment of the modified epoxy resin (MEP), forming a UV-blocking layer. Incorporating FGO@CeO2 induced n→π* electronic transitions within the MEP and lowered the electronic excitation threshold, expanding the UV spectral absorption band and enhancing the UV absorption intensity. A 785% increase in the UV absorption capacity was achieved in the MEP compared with that in the pristine epoxy resin. After 300 h of UV exposure, the photothermal temperature rise in the MEP was 13.67±2°C higher than that in pure epoxy resin.
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