银离子掺杂有机硅烷薄膜耐蚀和抗菌性能研究

为了制备具有抗菌特性和良好耐腐蚀性的不锈钢,通过溶胶-凝胶方法在乙烯基三甲氧基硅烷偶联剂中加入银离子,得到含银有机硅烷水解溶液,并通过喷涂在不锈钢表面制备了抗菌、耐蚀的不锈钢抗菌膜层,研究了银离子的掺入工艺以及薄膜的抗菌性能和耐蚀性能.结果表明,银离子含量增加到3%以上时,样品的抗菌性能均增加到99.9%以上,不锈钢表面经过预氧化处理的略优于表面未经预氧化处理的薄膜.10?Cl3溶液点蚀试验表明,样品的点蚀率仅为相同条件下不锈钢的1/40.银离子掺杂的乙烯基三甲氧基硅烷薄膜可以明显地提高不锈钢表面的耐腐蚀性能,同时赋予其抗菌性能.

Antibacterial and Anticorrosive Properties of Ag+ Doped Organosilane Film on Stainless Steel

For improving the anticor- rosive and antibacterial properties of stainless steel, the sol- gel method was used to obtain Ag~+ doped silane solution by adding Ag~+ into silane coupling agent, and then antibacterial and an- ticorrosive film was prepared on the stainless steel surface by spraying. The Ag~+ doped technology and the properties of film were investigated. The results suggest that the antibacterial per- formance of sample exceed 99.9 % when the Ag~+ molar content is higher than 3 %. The bacteria resistance is directly proportional to the Ag~+ ion content, and increases by surface oxidation treat- ment of steel. The pitting test of 10% FeCl_3 solution demonstrates that the pitting ratio of treated sample is 1/40 of the original stainless steel. The Ag~+ doped silane film can significantly in- crease the corrosion resistance of stainless steel with better anti- bacterial property.