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利用浸蚀多孔铝模板,涂覆TiO2溶胶和纳米粉组成的料浆,制得TiO2亲水性阵列薄膜。通过对此薄膜SEM及表面接触角分析,研究了聚乙二醇改性、存放时间、SiO2的添加等对其亲水性的影响。结果表明:浸蚀多孔铝模板制备的TiO2薄膜无需紫外光激发即表现出良好的亲水性,5s内可达到完全铺展;料浆中添加0.02～0.04g/mL聚乙二醇能一定程度上提高薄膜材料亲水性并减缓其亲水性的降低;添加纳米SiO2制备的TiO2/SiO2复合薄膜亲水性优于纯TiO2薄膜,经聚乙二醇改性后为超亲水性,超亲水性能在黑暗中维持5天。
A porous TiO2 template was used to coat TiO2 sol and nanopowder to prepare hydrophilic TiO2 film. Through the SEM and surface contact angle analysis of the film, the influence of polyethylene glycol modification, storage time, the addition of SiO2 on the hydrophilicity was studied. The results show that TiO2 film prepared by etching porous aluminum template shows good hydrophilicity without UV excitation and can be completely spread within 5s. Adding 0.02-0.04g / mL polyethylene glycol to the slurry can, to a certain extent, Improve the hydrophilicity of the film material and slow down the decrease of hydrophilicity; the hydrophilicity of the TiO2 / SiO2 composite film prepared by adding nano-SiO2 is better than the pure TiO2 film, modified by polyethylene glycol to be super-hydrophilic and super-pro Water performance in the dark for 5 days.