超疏水高疏油铝滤网的制备及其耐腐蚀性能

目前针对抽油烟机铝滤网的黏附油烟及腐蚀性问题等研究较少。利用Fe Cl3溶液刻蚀并沸水处理铝滤网,并采用十七氟癸基三甲氧基硅烷对其表面进行改性,制备出具有超疏水高疏油表面的铝滤网。利用扫描电子显微镜、原子力显微镜、X射线衍射仪、傅里叶变换红外光谱仪对滤网的表面形貌和成分进行了分析,用接触角测量仪对试样的润湿性能进行了测量,用电化学工作站对试样的耐腐蚀性能进行了研究。结果表明,在铝滤网表面制备出了微纳米复合结构,对去离子水、丙三醇、二甘醇、大豆油的接触角分别达151. 00°、148. 00°、143. 00°、140.75°,对去离子水、丙三醇、大豆油的滚动角分别为1°、5°、15°,处理后的铝滤网在自然环境和高温环境中具有优异的稳定性,电化学测试表明其具有更好的耐腐蚀性能,在3.5%Na Cl溶液中的缓蚀率达85.8%。

Fabrication and Corrosion Resistance of Superhydrophobic and High Oleophobic Aluminum Strainer

Aluminium strainers were etched with Fe Cl3 solution and followed by the sealing in boiling water,and then modified with( heptafluoro-1,1,2,2-tetrahydrodecyl) trimethoxysilane to obtain superhydrophobic and high oleophobic surface. Morphology and composition of the strainer were analyzed with scanning electron microscope,atomic force microscope,X-ray diffractometer and Fourier transform infrared spectroscopy. Surface wettability was measured with contact angle meter. Corrosion resistance of the sample was studied with electrochemical workstation. Results showed that the binary micro-nano rough structure was fabricated on the surface. The contact angles of the samples with water,glycerol,soybean oil was 151.00°,148.00°,143.00° and 140.75°. Rolling angle with deionized water,glycerol,soybean oil was 1°,5° and15°. Besides,the treated aluminium strainer had excellent stability in both natural and high temperature environments and had better corrosion resistance,and the inhibition rate reached 85.8% in 3.5% Na Cl solution.