硅烷改性三聚氰胺海绵的制备及其油水分离性能研究

利用甲基三甲氧基硅烷和二甲基二甲氧基硅烷水解后形成的水解液涂覆于三聚氰胺海绵上，成功制备了疏水亲油海绵。通过扫描电镜、X射线光电子能谱、傅里叶红外光谱、接触角和吸油能力测试等方法，对硅烷改性三聚氰胺海绵进行了表征。结果表明，硅烷改性使得本身亲水的三聚氰胺海绵表面转变为疏水状态，水的接触角可达149±0.5°，对八种油品或有机试剂的吸油能力可达到自重的47-60倍，使用达200次后吸附容量仅降低了17.7%，分离效率在96%以上。除此外，改性的海绵还具有较好的耐酸碱、耐盐和耐有机溶剂的特性，在溢油回收方面展现了良好的应用前景。

Preparation of silane modified melamine sponge for oil-water separation performance

Hydrophobic and lipophilic sponges were successfully prepared by coating the hydrolyzed solution of methyltrimethoxysilane and dimethyldimethoxysilane onto melamine sponge. The silane-modified melamine sponges were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, contact angle and oil absorption tests. The results show that the silane modification makes the hydrophilic surface of the melamine sponge into hydrophobic with a water contact angle of 149±0.5°. The silane-modified melamine sponges exhibited a high absorption capacity for eight types of oils and organic reagents up to 47-60 times of their own weight. After 200 cycles, the adsorption capacity is reduced only by 17.7%, and the separation efficiency is above 96%. In addition, the modified sponge also has good acid and alkali resistance, salt resistance and organic solvent resistance, which shows good application prospects in oil spill recovery.