碳气凝胶的制备及润湿性能研究

Preparation and wettability of carbon aerogels

以间苯二酚和糠醛为原料,经溶胶-凝胶、常压干燥和在真空环境中高温碳化,制备出碳气凝胶。用XRD、SEM及BET法对碳气凝胶结构组成与微观形貌进行表征。对碳气凝胶进行氟化处理,研究其润湿性能。结果表明,用此法制得的碳气凝胶经氟化处理可由超亲水变为超疏水材料。

Carbon aerogels were prepared by sol-gel reaction, ambient dehydration and high-temperature carbonization in vacuum with resorcinol and furfural as raw material. XRD, BET and SEM were used to investigate the microstructure, composition and morphology of carbon aerogels. Finally, experiments on wettability were carried out. Results indicate that the prepared carbon aerogels can change from superhydrophilicity to superhydrophobicity after fluorination.