Preparation method of polytetrafluoroethylene coating oil-water separation and filtering membrane
A polytetrafluoroethylene and oil-water separation technology is applied in the preparation of oil-water separation filtration membranes and the preparation of polytetrafluoroethylene-coated oil-water separation filtration membranes, which can solve the problems of poor mechanical strength of membranes, and achieve high mechanical strength, The effect of high efficiency and large coating area
Inactive Publication Date: 2018-11-09
GUANGDONG UNIV OF TECH
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Problems solved by technology
In the field of oil-water separation, the existing filter membranes that use the superhydrophobicity of polytetrafluoroethylene materials to achieve oil-water separation are all made of polytetrafluoroethylene as the membrane body or a single-layer metal mesh as the matrix, and the mechanical strength of the membrane is relatively poor. Difficult to apply in real industrial environment
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Embodiment 1
[0032] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0033] Please refer to the attached Figure 1 to Figure 6 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each com...
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Abstract
The invention provides a preparation method of a polytetrafluoroethylene coating oil-water separation and filtering membrane. The preparation method comprises the following steps: firstly, providing amultilayered metal sintered mesh; then immersing the multilayered metal sintered mesh with diluted sulfuric acid to remove rust; then washing the multilayered metal sintered mesh and drying; then spraying polytetrafluoroethylene emulsion on the multilayered metal sintered mesh by utilizing compressed air; finally, putting a sprayed filtering screen into a drying oven and drying to obtain the polytetrafluoroethylene coating oil-water separation and filtering membrane. According to the preparation method disclosed by the invention, the multilayered metal sintered mesh is used as a substrate, sothat the polytetrafluoroethylene coating oil-water separation and filtering membrane has relatively high mechanical strength and can be suitable for oil-water separation of a lot of liquid. Furthermore, a polytetrafluoroethylene coating has a relatively large area and the oil-water separation efficiency is relatively high; the polytetrafluoroethylene coating oil-water separation and filtering membrane has high industrial utilization value.
Description
technical field [0001] The invention belongs to the field of functional materials, and relates to a preparation method of an oil-water separation filter membrane, in particular to a preparation method of a polytetrafluoroethylene-coated oil-water separation filter membrane. Background technique [0002] In recent years, the pollution caused by offshore oil spills has threatened the stability of the ecosystem, and the increase in water content in oilfield production fluids has also become an important factor affecting the economic benefits of oil extraction. Therefore, the separation technology of oil-water mixed liquid has gradually become a research hotspot. Traditional oil-water separation technologies mainly include gravity settling, centrifugation, electro-de-separation, and biodegradation based on the differences in physical properties such as oil-water two-phase density and electrical conductivity. However, these methods are costly and inefficient, neither can effecti...
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IPC IPC(8): B01D17/02B01D17/022B01D67/00B01D71/36
CPCB01D17/02B01D17/085B01D67/0079B01D71/36
Inventor 柯尊文袁志山王成勇易新
Owner GUANGDONG UNIV OF TECH