Preparation method of aluminum blades used in oil skimmer loaded with oleophilic and hydrophobic composite materials

Abstract

The invention discloses a method for preparing aluminum blades used in an oil receiving machine with oil-wet and hydrophobic composite materials. According to the method, ultrafine graphene nanosheetsare prepared by a microwave expansion method, and polytetrafluoroethylene-graphene nanosheet composite material powder is prepared; then the composite material powder is subjected to compression moulding forming and the surface chemical reduction to obtain polytetrafluoroethylene-graphene composite material slices; and finally, the polytetrafluoroethylene-graphene composite material slices and aluminum sheets are bonded with fluorine resin primer, and after drying is completed, the aluminum blades used in the oil receiving machine with the oil-wet and hydrophobic composite materials are prepared. The method for preparing the aluminum blades used in the oil receiving machine with the oil-wet and hydrophobic composite materials is simple, simple and convenient to operate and low in cost, the prepared aluminum blades used in the oil receiving machine with the oil-wet and hydrophobic composite materials have good oil-wet and hydrophobic performance, high oil-receiving efficiency, high mechanical bond strength and high corrosion resistance, and the recovery and disposal of oil slick can be greatly promoted.

Description

technical field [0001] The invention relates to a method for preparing aluminum blades used in oil skimmers loaded with lipophilic and hydrophobic composite materials. Background technique [0002] With the rapid development of my country's economy, the demand for crude oil is increasing day by day, and the ecological pollution accidents of oceans, rivers and lakes caused by crude oil leakage are also becoming more and more serious. After a crude oil spill accident occurs, it should first be surrounded by oil booms to prevent it from spreading on the surface of the water body, so as to facilitate the subsequent use of mechanical treatment, chemical treatment, bioremediation technology, combustion treatment, adsorption treatment and other technologies Carry out oil slick cleanup. The chemical treatment method mainly uses chemical agents such as dispersants, oil coagulants, and demulsifiers to demulsify the oil film floating on the surface of the water body. However, this met...

AI Technical Summary

Problems solved by technology

[0005] Chinese Patent Publication No. CN104906828A discloses a metal foam-based oil slick collection material and its preparation method, which is formed by embedding metal foam in an oleophilic and hydrophobic material and drying and solidifying. The material produced by this technology can Slick oil adsorption is realized, but due to the difference in thermal expansion coefficient between metal foam and lipophilic and hydrophobic materials, the bonding strength is poor during the drying and molding process, and the dimensional accuracy control is difficult to guarantee

[0006] Chinese Patent Publication No. CN106633112A discloses a super lipophilic hydrophobic material and its preparation method, which first dissolves and activates microcrystalline cellulose by carbon dioxide-based reversible ionic liquid, and then modifies the cellulose in silane hydrolyzate treatment, and then grind the cellulose and disperse the ground powder in an ethanol solution to obtain a dispersion, and finally spray the dispersion on filter paper to prepare a super lipophilic and hydrophobic material, but the super lipophilic and hydrophobic material produced by this technology The material has low mechanical strength and is not suitable for the preparation of skimmer blades

[0007] Graphene nanosheet is a loose and porous worm-like high-efficiency adsorption material, which has the excellent characteristics of fast oil absorption speed, large oil absorption ratio, low cost, and no pollution to the environment. It is especially suitable as an adsorption material for emergency treatment of oil spill accidents; Tetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing, lubricity, electrical insulation and aging resistance, and polytetrafluoroethylene also has excellent hydrophobic and oleophobic properties; studies have shown that: graphene nanosheets - phenolic Resin-based activated carbon composite materials have strong adsorption capacity for domestic waste oil, but because the composite material requires high molding temperature, high molding pressure and long curing time during the molding process, its preparation process is relatively complicated. Moreover, the cured composite material has the defects of high hardness and high brittleness, so it cannot meet the requirements of the oil skimmer blade on the mechanical properties of the material; another study shows that: the polytetrafluoroethylene-polyphenylene sulfide coating is plasticized to The surface of the 400-mesh stainless steel mesh can construct a micron-scale elongated fiber structure, and a composite material with lipophilic and hydrophobic properties can be prepared. However, due to the existence of the stainless steel mesh structure, it will produce shrinkage stress during the high-temperature plasticizing and cooling process. Even cracking defects, forming quality is difficult to guarantee, so it is of great significance to develop a preparation method for aluminum blades used in oil skimmers loaded with lipophilic and hydrophobic composite materials