Manufacturing method for fibrous membrane for oil-water separation

Abstract

The invention discloses a manufacturing method for a fibrous membrane of an extremely hydrophobic organic macromolecule chemical compound with an oil-water separation function in the technical field of fibrous membrane manufacturing. The manufacturing method comprises the following steps: synthetizing a copolymer with excellent electrostatic spinnability by regulating the compounding ratio of a monomer and controlling the condition of a suspension polymerization technology and by adjusting and controlling the compositions of a solution, processing parameters and the temperature and humidity conditions of environment, and spinning a copolymer solution into the fibrous membrane with the advantages of uniform and small bore diameters, high porosity, large flux and extremely hydrophobic and oleophylic properties by using an electrostatic spinning technique. The obtained fibrous membrane has the advantages that the specific surface area is large, the patterns are large, the stacking structure is proper, and the fibrous membrane is in a three-dimensional bore channel structure. Compared with an existing polymer-based oil-water separation member, the fibrous membrane has the advantages that the bore channel structure is more reasonable, the separation capacity is stronger, the separation efficiency is higher, the anti-pollution capacity is stronger, the membrane bores are not easy to block, the oil-water selectivity is stronger, the mechanical strength is higher, the flexibility and the temperature resistance are better, the preparation process is shorter, the consumed energy is little, the filtering rate is higher, and the cost is lower, so that the fibrous membrane can better satisfy the requirements of industrial practicality.

Description

technical field [0001] The invention relates to a method for manufacturing a fiber membrane, in particular to a method for manufacturing an extremely hydrophobic organic polymer fiber membrane with an oil-water separation function. The manufacturing method utilizes suspension polymerization and electrospinning technologies. Background technique [0002] The rapid development of industry has led to an increasing use of oil products. However, due to the lag in the development of environmental protection awareness and the lack of supervision, a large amount of oily wastewater has entered natural waters, causing serious pollution and irreversible harm to the ecological environment. Oily wastewater comes from a wide range of sources, including lubricating oil and mechanical oil pollution during mechanical processing, oil production fluid and produced water produced in oil and gas exploitation, and ground oil and waste oil in oil fields, refineries, ships or other industrial sites,...

AI Technical Summary

Problems solved by technology

Based on the above characteristics, electrospun polymer fiber membranes containing styrene structural units have been applied in the field of oil-water separation, but the fluffy three-dimensional structure of polymer fiber membranes containing styrene structural units makes there are very few overlapping points between different fibers , when the fiber membrane is stressed as a whole, the fiber is prone to slip, and the strength is extremely low. The fiber after slipping is also stressed and bears the load, resulting in a small elongation at break of the fiber membrane. In addition, the polymer containing styrene structural units is more rigid strong, resulting in extremely brittle fiber membranes at low temperatures, poor low temperature resistance, and poor environmental adaptability in practical applications