Preparation method of super-hydrophobic/lipophilic oil-water separation meshed membrane

Abstract

The invention relates to a preparation method of a super-hydrophobic / lipophilic oil-water separation meshed membrane with low cost and high oil-water separation efficiency. Inorganic matters with low cost are adopted as part of raw materials, a mild preparation process is adopted to form a nanoscale mastoid structure on a metal mesh with a sol-gel method, and an organic modifier with low surface energy is adopted to modify the built nano SiO2, so that the super-hydrophobic / lipophilic oil-water separation meshed membrane is prepared, and the cost is greatly saved; on the other hand, the inorganic raw materials have low influence on environment and meet the requirement of green chemical production at present.

Description

technical field [0001] The invention relates to a preparation method of an oil-water separation omentum, in particular to a preparation method of a superhydrophobic / oleophilic oil-water separation omentum. Background technique [0002] In real life, oily wastewater comes from a wide range of sources, such as oil extraction, printing and dyeing oily wastewater generated in the textile industry, and a large amount of oily wastewater discharged in food processing, machinery industry and chemical industry, all of which are wastewater containing a small amount of oil and a large amount of water. . With the rapid development of industry and the strengthening of environmental awareness, oil-water separation technology has been paid more attention by people. Oil-water separation belongs to the category of liquid-liquid separation, among which oil removal in water is more concerned, and the separation process is more complicated. However, the existing oil-water separation membranes...

AI Technical Summary

Problems solved by technology

Oil-water separation belongs to the category of liquid-liquid separation. Among them, oil removal in water is more concerned, and the separation process is relatively complicated.

However, the existing oil-water separation membranes have the disadvantages of complex and difficult processing processes such as high-temperature baking and film formation, and the coating is relatively thick, and the lipophilicity is not good, which easily increases the oil flow resistance and reduces the efficiency of oil-water separation.

In addition, in the existing preparation methods, there is still the problem of high cost of preparing oil-water separation omentum raw materials, resulting in high cost of oil-water separation omentum, and the use of a large amount of organic raw materials also brings serious pollution