溶剂热法制备超疏水性的热塑性酚醛基炭凝胶  

Solvothermal synthesis for thermoplastic phenolic-based carbon gels with superhydrophobicity

作　　者：李海 唐蕊 代芳 Li Hai;Tang Rui;Dai Fang(School of Material and Chemical Engineering,Tongren University,Guizhou Tongren 554300,China)

机构地区：[1]铜仁学院材料与化学工程学院,贵州铜仁554300

出　　处：《炭素技术》2024年第4期56-59,共4页Carbon Techniques

基　　金：铜仁学院博士科研启动基金:项目(trxyDH1906)。

摘　　要：在溶剂热条件下,通过优化乌洛托品含量、酚醛浓度、溶剂种类、反应温度4个因素,成功制备了热塑性酚醛基凝胶(TPGs)。经过炭化,TPGs转变为热塑性酚醛基炭凝胶(TPCGs)。所制备的TPCGs具有丰富的孔隙,并展现出由大量碳质纳米结节组成的三维珊瑚状微观结构。测试结果表明,TPCGs是典型的无定型炭材料,比表面积为197.5 m^(2)/g,孔径主要集中在1~5 nm。TPCGs具有优异的超疏水性和较高的汽油吸附能力。本研究为炭凝胶的制备提供了一种新的、有效的方法。Thermoplastic phenolic-based gels(TPGs)were successfully synthesized under solvothermal condition via optimizing four factors including hexamethylenetetramine(HMTA)content,phenolic concentration,solvent and reaction temperature.The TPGs can be easily converted into thermoplastic phenolic-based carbon gels(TPCGs)after carbonization.The obtained TPCGs are highly porous and exhibit 3D coral-like microstructures composing of abundant carbonaceous nano-nodules.Tests indicate that the TPCGs are typical amorphous carbon material,having a specific surface area of 197.5 m^(2)/g and pore sizes mainly ranging from 1 to 5 nm.Besides,the TPCGs show excellent superhydrophobic property and high organic liquids adsorption capacity,making it a good candidate for oils ad⁃sorbent.This work has provided a new and effective method to synthesize carbon gels.

关 键 词：酚醛树脂 多孔材料 炭凝胶 超疏水性 

分 类 号：O632[理学—高分子化学] TB383[理学—化学]