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超疏水四氧化三铁薄膜的制备及性能研究


全文字数:12000字左右  原创时间:<=2022年

【内容摘要】

超疏水四氧化三铁薄膜的制备及性能研究

 

摘  要
本文简略地总结了超疏水表面的研究进展及其应用情况。在总结分析文献的基础上,本论文以氢氧化钠为沉淀剂、氯化铁为原料,采用均匀沉淀-涂布法进行了超疏水四氧化三铁的制备实验,并初步探讨了反应物配比、时间、煅烧温度及时间、干燥温度及时间、以及表面活性剂等因素对超细四氧化三铁制备的影响。实验结果表明均匀沉淀法制备超细四氧化三铁的最佳反应条件是:Fe3+浓度为0.1mol/L,在常温反应3h,反应所得物质经过离心洗涤,可制备出超细氧化铁的前驱物Fe(OH)3,使用聚乙二醇作表面活性剂,然后使用该前驱物先后在真空干燥箱90℃下干燥2h,400℃下煅烧4h,就可得到粒度小、分散性较好的超细四氧化三铁产品,将四氧化三铁粉末溶于乙醇中,并采用涂布的方法,在玻璃上制备了四氧化三铁薄膜,研究了该薄膜表面的润湿性。结果表明:未用硬脂酸修饰的薄膜表面呈亲水性,而用硬脂酸修饰后的薄膜呈超疏水性,最大接触角为170°,最小滚动角为4°。

关键词:超疏水四氧化三铁,均匀沉淀法,超亲水,接触角,滚动角

ABSTRACT

Research progress and the application of Super-Hydrophobic surface have been summarized in the paper. according to summary and Analytical of Cultural heritage,In the experiments, using Hydroxide pay as precipitant agent and iron chloride solution as another reactant, good ultrafine four oxidize three irons have been prepared by the method of homogeneous precipitation . In the addition , some technical factors, such as the ratio of reactants, and time , the drying temperature and time, the calcination temperature and time, as well as the surface-active agent etc, have been systematically investigated and discussed in this paper. The results show that : when the molar ration of 0.1mol/L Fe3+, and the hydrolyzing condition is in Homoiothermy for 3 h with the help of ultrasonic treatment, best precursors of Fe(OH)3 can be got, using Polyethylene glycol ether as surface-active agents. Subsequently, the precursors will be dried at 90℃ for 2 hours and sintered at 400℃ for 4 hours in turn, the ultrafine four oxidize three irons with excellent properties can be prepared eventually. In the meantime, Fe3O4 is fused in polyethylene glycol and Soaked into thin film with the glass slice.then, Studying the smooth wet of that thin film surface, As a result: thin film surface have great Super-Hydrophilic without Stearic acid;and thin film surface have great Super-Hydrophobic with Stearic acid, 170° of max contact angle and 4° of minimum roll angle in Superhydrophobic.

Keywords: Hydrophobic Fe3O4,Homogenous Precipitation Method, Super-Hydrophilic, contact angle,roll angle

 

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